CN109260913A - A kind of band recovery type heat freezing type drier - Google Patents
A kind of band recovery type heat freezing type drier Download PDFInfo
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- CN109260913A CN109260913A CN201811400484.3A CN201811400484A CN109260913A CN 109260913 A CN109260913 A CN 109260913A CN 201811400484 A CN201811400484 A CN 201811400484A CN 109260913 A CN109260913 A CN 109260913A
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- condenser
- valve
- heat
- evaporator
- air
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
- B01D53/265—Drying gases or vapours by refrigeration (condensation)
Abstract
A kind of band recovery type heat freezing type drier, including refrigeration system and air system, refrigeration system successively includes refrigeration compressor, oil eliminator, heat recovering heat exchanger, condenser, device for drying and filtering, restricting element, evaporator, gasifier and refrigeration compressor by refrigerant flow direction, condenser includes two auxiliary condensers I and auxiliary condenser II in parallel, and side is respectively equipped with solenoid valve I and solenoid valve II；Air system successively includes pre-cooling regenerator, evaporator, gas-liquid separator and pre-cooling regenerator by air-flow direction, gas-liquid separator bottom is equipped with drain valve, it is divided into shell side and tube side in pre-cooling regenerator, shell side is connected to air intake and evaporator, and tube side is connected to gas-liquid separator and air outlet slit.Equipment of the invention, which not only has cooling driers, reduces compressed air dew point, purification of compressed air function, moreover it is possible to recovering condensing heat, steady leaving water temperature, energy saving, while guaranteeing that equipment is more steadily run in variation of ambient temperature.
Description
Technical field
The present invention relates to freeze drying equipment technical field, especially a kind of band recovery type heat freezing type drier.
Background technique
With the continuous development of industry, the application of compressed air is more extensive, and in order to protect the valve for using compressed air
The gas equipments such as door switch gas increase service life of equipment, and being purified and be dried to compressed air just seems and its again
It wants, cooling driers are a kind of common compressed air cleaning equipments, and are increasingly used by industrial owner, and installation amount is also year by year
Increase.In cooling driers, by reducing temperature to compressed air, the water vapour content in reduction compressed air, and extra water
Steam can condense into liquid, then liquid water is removed, so that it is dry to achieve the effect that compressed air.Meanwhile in cooling driers
In refrigeration cycle, condensation heat is eventually discharged into environment in a variety of manners.
Specifically, cooling driers are generally all in the working condition of continuous-stable, year runing time at 8000 hours or more,
There is the demand of the adjusting variation of cooling and heating load unlike air-conditioning.And it is equivalent in refrigeration cycle by the heat that condenser is taken away
The power and refrigerating capacity summation of refrigeration compressor, are usually several times as much as the input power of refrigeration compressor, this partial heat finally with
Various forms is discharged into environment, causes energy waste and thermal pollution.In addition, when variation of ambient temperature, condenser
The variation of heat exchange amount causes pressure at expulsion too high or too low, causes the unstability of refrigeration system.The condensed water temperature of equipment discharge
Degree is typically all there was only the several years, and direct emission wastes a large amount of cooling capacity, and the condenser in refrigeration system really needs outside to mention
Semen donors routinely influence equipment performance since cooling effect is bad come the equipment for cooling down refrigerant, especially Wind-cooling type.
Summary of the invention
The invention solves problem of the prior art, provide a kind of band recovery type heat freezing type drier, can recycle condensation
Heat, steady leaving water temperature, energy saving, while guaranteeing that equipment is more steadily run in variation of ambient temperature.
In order to achieve the above objectives, The technical solution adopted by the invention is as follows:
A kind of band recovery type heat freezing type drier, including refrigeration system and air system, the refrigeration system press refrigerant stream
Dynamic direction successively includes refrigeration compressor, oil eliminator, heat recovering heat exchanger, condenser, device for drying and filtering, restricting element, steaming
Sending out device, gasifier and refrigeration compressor, condenser includes two auxiliary condensers I and auxiliary condenser II in parallel, is assisted cold
Condenser I and II side of auxiliary condenser are respectively equipped with solenoid valve I and solenoid valve II；The air system by air-flow direction according to
Secondary includes pre-cooling regenerator, evaporator, gas-liquid separator and pre-cooling regenerator, and gas-liquid separator bottom is equipped with drain valve, pre-cooling
It is divided into shell side and tube side in regenerator, shell side is connected to air intake and evaporator, and tube side is connected to gas-liquid separator and air outlet slit.
And the high temperature refrigerant of refrigeration compressor outlet exchanges heat in the outlet port of heat exchanger with air, on the one hand reduces system
The temperature of cryogen mitigates the load of condenser, and another party improves air themperature, reduces the relative humidity of compressed air, to prevent
Only pipeline internal rust.Two systems are exchanged heat by evaporator, are commonly mounted on a chassis, and outside is equipped with boxboard.
Preferably, the condenser both ends are equipped with bypass, bypass is equipped with solenoid valve III.Pass through three solenoid valve differences
Folding condition, can carry out selecting different heat recovery modes.
Preferably, the auxiliary condenser I and auxiliary condenser II be it is finned, belong to air-cooled condenser.
Preferably, the drain valve is connect by pipeline with condenser.The cryogenic condensation of gas-liquid separator bottom discharge
Condenser effect can be improved for being sprayed onto fin in water.
Preferably, the drain valve is electronic drain valve.The drainage pipeline of gas-liquid separator bottom is divided into two parts, and one
Part is conventional rhone of guiding to, and another part is connected to condenser, aperture on pipeline, electronic drain valve intermittence with pipeline
Condensed water is sprayed on fin when draining.
Preferably, the restricting element is heating power expansion valve.
Preferably, the oil eliminator, which is exported to evaporator, is equipped with bypass, bypass is equipped with hot gas bypass valve.It is logical
Partial high pressure side gas bypass to low-pressure side is adjusted the refrigerating capacity of refrigeration system by the aperture for overregulating hot gas bypass valve, drop
Low main pipeline pressure, to protect system.
Preferably, the heat recovering heat exchanger has water inlet and water out, thermostat valve, Yi Jiwen are equipped at water out
Degree control sample point.Leaving water temperature can be set, thermostat valve adjusts the water flow for flowing through heat recovering heat exchanger according to leaving water temperature,
Obtain the stable hot water of continuous temperature.
Preferably, the thermostat valve has insulated water tank by piping connection.
The beneficial effects of the present invention are: 1, regenerator special designing is pre-chilled, increases by one section in compressed air outlet part
Heat exchanger exchanges heat for compressed air and high temperature refrigerant, on the one hand reduces the temperature of refrigerant, mitigates condenser
Load, another party improve air outlet temperature, the relative humidity of compressed air are reduced, to prevent pipeline internal rust.
2, can be while cooling dry air, recovering condensing heat simultaneously provides equilibrium temperature GEOTHERMAL WATER.
3, different condensing heat-exchange areas is combined into meet the needs of different inflow temperatures by solenoid valve opening and closing, kept
The stability of refrigeration system.
4, the low temperature cold condensate of gas-liquid separator bottom discharge guides to condenser external by pipeline, is sprayed on fin,
Both temperature can be reduced, dust stratification can be prevented with cleaning fin appropriate, to improve the heat exchange efficiency of condenser.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention.
Symbol description in figure: 1, refrigeration compressor, 2, oil eliminator, 3, heat recovering heat exchanger, 4, device for drying and filtering, 5, heat
Power expansion valve, 6, hot gas bypass valve, 7, gasifier, 8, auxiliary condenser I, 9, auxiliary condenser II, 10, solenoid valve III, 11,
Solenoid valve I, 12, solenoid valve II, 13, thermostat valve, 14, pre-cooling regenerator, 15, evaporator, 16, gas-liquid separator, 17, electronics row
Water valve.
Specific embodiment
Below by specific embodiment and attached drawing, the present invention is further illustrated.
Specific embodiment are as follows: as shown in Figure 1, a kind of band recovery type heat freezing type drier, including refrigeration system and sky
Gas system.Refrigeration system by refrigerant flow direction successively includes refrigeration compressor 1, oil eliminator 2, heat recovering heat exchanger 3, cold
Condenser, device for drying and filtering 4, restricting element, evaporator 15, gasifier 7 and refrigeration compressor 1, condenser include two in parallel
Auxiliary condenser I 8 and auxiliary condenser II 9, one side are respectively equipped with solenoid valve I 11 and solenoid valve II 12, and condenser both ends are set
There is bypass, bypass is equipped with solenoid valve III 10, and auxiliary condenser I 8 and auxiliary condenser II 9 are finned, restricting element
For heating power expansion valve 5.Wherein, oil eliminator 2 is exported to 15 import of evaporator and is equipped with bypass, and bypass is equipped with hot gas bypass valve 6.
Heat recovering heat exchanger 3 has water inlet and water out, is equipped with thermostat valve 13 at water out, thermostat valve 13 has guarantor by piping connection
Reservoir.
Air system successively includes pre-cooling regenerator 14, evaporator 15, gas-liquid separator 16 and pre- by air-flow direction
Cold regenerator 14,16 bottom of gas-liquid separator are equipped with drain valve 17, and drain valve 17 is electronic drain valve, divide in pre-cooling regenerator 14
For shell side and tube side, shell side is connected to air intake and evaporator 15, and tube side is connected to gas-liquid separator 16 and air outlet slit.
In addition, drain valve 17 is connect by pipeline with condenser.
As shown in connection with fig. 1, the working principle of the invention is further described:
One, cooling driers part:
About 45 DEG C of compressed air enter pre-cooling regenerator 14, in evaporator 15 by refrigerant compressed air after cooling
Carry out heat exchange.So that 45 DEG C of compressed air temperatures for entering pre-cooling regenerator 14 is down to 25 DEG C, tentatively reduces damp and hot saturation
The temperature and water content of compressed air mitigate the thermic load of evaporator 15 to a certain extent, and then reduce the energy consumption of complete machine.Separately
Cooled water removal to 2 DEG C of compressed air separates the pressure that condensed water becomes dry through gas-liquid separator 16 in external evaporator 15
Contracting air returns to pre-cooling regenerator 14, and the compressed air with 45 DEG C carries out heat exchange, and temperature promotion is gone out to 35 DEG C by compressed air
Mouth is gone out.It is discharged in the water that gas-liquid separator 16 is isolated by drain valve 17.Cooling driers reduce compressed air in exit
Relative humidity makes gas pipeline not occur inner wall because relative humidity is excessively high and get rusty, while also avoiding because of outside wall temperature mistake
Outer " hanging dew " phenomenon of pipe that is low and occurring, improves shopwork environment.
Two, heat recovery section:
In conventional heat recovery mode, solenoid valve I 11 is opened, closes solenoid valve III 10 and solenoid valve II 12, refrigeration compressor 1 is discharged
High temperature refrigerant gas in heat recovering heat exchanger 3 with cold water exchange heat, subsequently enter auxiliary condenser I 8, refrigeration after cooling
Heating power expansion valve 5 and evaporator 15 are passed through in agent, complete refrigeration cycle, and the water after heating enters insulated water tank storage.
When without recuperation of heat, solenoid valve I 11 and solenoid valve II 12 are opened, closes solenoid valve III 10, refrigeration compressor 1 is vented
It is introduced into and is directly entered heat recovering heat exchanger 3.Because flowing through heat recovering heat exchanger without cold water at this time, it is believed that refrigerant is in warm
It does not exchange heat substantially in recycling heat exchanger, then refrigerant enters auxiliary condenser I 8 and auxiliary condenser II 9 cools down, and then passes through
Heating power expansion valve 5 and evaporator 15 are crossed, refrigeration cycle is completed.
When needing the heating lower water of inflow temperature in winter, solenoid valve III 10 is opened, closes solenoid valve I 11 and solenoid valve
II 12, the high temperature refrigerant gas that compressor 1 is discharged exchanges heat in heat recovering heat exchanger 3 with cold water, then passes through thermal expansion
Valve 5 and evaporator 15 complete refrigeration cycle.Water after heating enters insulated water tank storage.The circulation reduces condenser area,
It avoids because of condensation temperature decline too fast the problem of causing refrigeration system stability to decline, while increasing logarithmic temperature difference, improve
Heat exchange efficiency.
When the higher water of inflow temperature need to be heated in summer, solenoid valve II 12 is opened, closes solenoid valve III 10 and electromagnetism
Valve I 11, the high temperature refrigerant gas that compressor 1 is discharged exchange heat in heat recovering heat exchanger 3 with cold water, subsequently enter auxiliary condensation
Device II 9, refrigerant after cooling pass through heating power expansion valve 5 and evaporator 15, complete refrigeration cycle.Water after heating enters heat preservation
Water tank storage.The circulation increases condenser area, and avoiding leads to the decline of refrigeration system stability because condensation temperature increases
Problem.
Three, hot water outlet temperature control explanation:
Hot water outlet temperature control is arranged thermostat valve 13 by the outlet of heat recovering heat exchanger 3 and realizes, temperature control sample point is
Heat exchanger exit water temperature.Leaving water temperature can be set in user, and thermostat valve 13 flows through heat recovering heat exchanger 3 according to leaving water temperature adjusting
Water flow, obtain the stable hot water of continuous temperature.When water temperature increases, thermostat valve 13 is opened greatly, and water flow increases；Work as water temperature
Thermostat valve 13 turns down when reduction, and water flow reduces.Which can also be alleviated because inflow temperature is higher or relatively low causes refrigeration system
The case where stability declines.
Four, the selection of auxiliary condenser I, II capacity:
I 8 capacity of auxiliary condenser are as follows: when leaving water temperature is fixed as certain temperature and when only heat recovering heat exchanger 3 as condenser,
Inflow temperature sees the heat exchange amount for the lower limit temperature that condensed water inflow temperature is system safety operation and the heat exchange of ceiling temperature as
The difference of amount.
The sum of the capacity of auxiliary condenser I 8 and the capacity of auxiliary condenser II 9 and condenser needed for cooling driers refrigeration system
Capacity is suitable.
Under domestic routine operating condition, when water inlet bound temperature is 40 DEG C/20 DEG C, the capacity and auxiliary of auxiliary condenser I 8 are cold
When the ratio between capacity of condenser II 9 is 1:2, the operation and adjusting of system have good effect.
Above is only a specific embodiment of the present invention, but structure feature of the invention is not limited thereto, the present invention
It can be used on similar product, within the field of the present invention, made changes or modifications are all by any those skilled in the art
Cover within the scope of the patent of the present invention.
Claims (9)
1. a kind of band recovery type heat freezing type drier, including refrigeration system and air system, it is characterised in that: the refrigeration system
System by refrigerant flow direction successively includes refrigeration compressor (1), oil eliminator (2), heat recovering heat exchanger (3), condenser, dry
Dry filter (4), restricting element, evaporator (15), gasifier (7) and refrigeration compressor (1), condenser include two in parallel
Auxiliary condenser I (8) and auxiliary condenser II (9), auxiliary condenser I (8) and auxiliary condenser II (9) side are respectively equipped with electricity
Magnet valve I (11) and solenoid valve II (12)；
The air system successively includes pre-cooling regenerator (14), evaporator (15), gas-liquid separator by air-flow direction
(16) and pre-cooling regenerator (14), gas-liquid separator (16) bottom are equipped with drain valve (17), are divided into shell in pre-cooling regenerator (14)
Journey and tube side, shell side are connected to air intake and evaporator (15), and tube side is connected to gas-liquid separator (16) and air outlet slit.
2. a kind of band recovery type heat freezing type drier according to claim 1, it is characterised in that: the condenser both ends
Equipped with bypass, bypass is equipped with solenoid valve III (10).
3. a kind of band recovery type heat freezing type drier according to claim 1, it is characterised in that: the auxiliary condenser
I (8) and auxiliary condenser II (9) are finned.
4. a kind of band recovery type heat freezing type drier according to claim 3, it is characterised in that: the drain valve (17)
It is connect by pipeline with condenser.
5. a kind of band recovery type heat freezing type drier according to claim 4, it is characterised in that: the drain valve (17)
For electronic drain valve.
6. a kind of band recovery type heat freezing type drier according to claim 1, it is characterised in that: the restricting element is
Heating power expansion valve (5).
7. a kind of band recovery type heat freezing type drier according to claim 1, it is characterised in that: the oil eliminator
(2) it is exported to evaporator (15) import and is equipped with bypass, bypass is equipped with hot gas bypass valve (6).
8. a kind of band recovery type heat freezing type drier according to claim 1, it is characterised in that: the recuperation of heat heat exchange
Device (3) has water inlet and water out, is equipped with thermostat valve (13) at water out.
9. a kind of band recovery type heat freezing type drier according to claim 8, it is characterised in that: the thermostat valve (13)
There is insulated water tank by piping connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811400484.3A CN109260913A (en) | 2018-11-22 | 2018-11-22 | A kind of band recovery type heat freezing type drier |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811400484.3A CN109260913A (en) | 2018-11-22 | 2018-11-22 | A kind of band recovery type heat freezing type drier |
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| CN109260913A true CN109260913A (en) | 2019-01-25 |
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| CN201811400484.3A Pending CN109260913A (en) | 2018-11-22 | 2018-11-22 | A kind of band recovery type heat freezing type drier |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110425827A (en) * | 2019-08-28 | 2019-11-08 | 上海盈达空调设备股份有限公司 | Lyophilization system based on recuperation of heat and photothermal technique |
| CN113803964A (en) * | 2021-07-21 | 2021-12-17 | 广东葆德科技有限公司 | Large-discharge freeze dryer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110425827A (en) * | 2019-08-28 | 2019-11-08 | 上海盈达空调设备股份有限公司 | Lyophilization system based on recuperation of heat and photothermal technique |
| CN113803964A (en) * | 2021-07-21 | 2021-12-17 | 广东葆德科技有限公司 | Large-discharge freeze dryer |
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