CN101852538B - High-temperature heat pump drying device - Google Patents

High-temperature heat pump drying device Download PDF

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Publication number
CN101852538B
CN101852538B CN201010228320A CN201010228320A CN101852538B CN 101852538 B CN101852538 B CN 101852538B CN 201010228320 A CN201010228320 A CN 201010228320A CN 201010228320 A CN201010228320 A CN 201010228320A CN 101852538 B CN101852538 B CN 101852538B
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CN
China
Prior art keywords
drying
temperature
baffle plate
condenser
heat pump
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CN201010228320A
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Chinese (zh)
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CN101852538A (en
Inventor
田国民
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天津市国民制药机械有限公司
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Publication of CN101852538A publication Critical patent/CN101852538A/en
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Abstract

The invention relates to a high-temperature heat pump drying device. The inner part of a drying box body is divided into two partitions which are a heating chamber and a drying chamber, i.e. a heat absorbing evaporator in the drying box body is arranged in the heating chamber to form a heating mechanism absorbing heat in outside air by regarding the evaporator as a center and continuously providing the heat to a condenser through working media and form a circulating system which heats materials through a circulating fan in the sealed drying chamber by regarding the condenser as the center so that water in the materials is steamed. When the relative humidity reaches a set value, the heating mechanism can automatically remove moisture and feed the hot air without moisture back to the evaporator for secondary afterheat absorption so that the temperature of a heat pump reaches 85 DEG C. The invention has the advantages of high precision, stable performance, simple setting, convenient operation and numerous energy source saving by adopting a high-tech PLC (Programmable Logic Controller) digital temperature and humidity controller and introducing French (KIMO) sensing equipment and a large touch screen human-machine operating panel so that some oily and sugary medicines difficult to dry are better dried.

Description

High-temperature heat pump drying device

Technical field

The present invention relates to a kind of drying unit, the high-temperature heat pump drying device of particularly a kind of energy-saving and emission-reduction and direct hydrofuge.

Background technology

As everyone knows; Adopting the purpose of drying unit in pharmaceuticals industry is to remove some raw material; Moisture content in the semi-finished product or solvent, to improve the quality of products, to be convenient to material processing, use and to be convenient to transportation and storage, drying device also can extensively be used and fields such as food and chemical industry.At present, the conventional drying device directly obtains dry required heat energy with electrical heating or steam (fuel ability) usually, is example to utilize the hot-air dried material; In the conventional hot-air drying device, utilize heater that surrounding air is heated to proper temperature, hot-air gets in the drier heat is passed to material; Make moisture content vaporization wherein and take drier out of by air, it is low that the air that goes out drier becomes temperature, contains washy waste gas; Directly enter environment, simultaneously, in the conventional drying device; Get into the moisture content that the drier humidity ratio of moist air equals surrounding air; When environment temperature is high, when the big and material of moisture content required low temperature drying again, the application of this kind drying device can receive certain limitation.In addition, it is that heat pump organically combines with drier to also have a kind of general heat pump drying device, utilizes the heat pump characteristics, and the heat of producing is 3-8 times with the ratio (CPO) of the driving energy of consumption.In heat pump drying device, the waste gas that drier is discharged no longer enters environment, but gets into heat pump, the waste gas elder generation cool-down dehumidification that heat pump is discharged drier; Get into the drier recycle again behind the heat temperature raising, its workpiece principle is utilized the heat in the evaporimeter absorption outside air in " heat pump " exactly, perhaps reclaims the waste heat of exhaust in the dry run; Through compressor work with energy carrying (transfers) to drying baker, the hot-air in the drying baker is through circular heating repeatedly, the moisture in the absorption material; The humidification of self lowering the temperature, the process that dewaters through hot blast hydrofuge or condensation is discharged the moisture in the material and is taken away; And finally realize the continuous drying of material, but because original thermal source is to be equivalent to environment temperature in the baking oven, it is less to hold body; Closed circulation heating in drier through heating again behind the cooling hydrofuge, and does not have extra thermal source to replenish; The temperature of drying box can only to a certain degree paced up and down, and about 56 ℃ of high temperature, low temperature reach approximate dew point (6 ℃); This is difficult to carry out for containing the drying of sugar with the oil-containing material. and be head it off, generally can only adopt assistant heating (electrical heating).

Summary of the invention

Main purpose of the present invention is to overcome above deficiency and a kind of energy-saving and emission-reduction and the direct high-temperature heat pump drying device of hydrofuge is provided.

The technical solution adopted for the present invention to solve the technical problems is: the A baffle plate and B baffle plate, hot air circulation air channel, windscreen and the PLC numeral temperature and humidity controller that the present invention includes axial flow blower, evaporimeter, compressor, throttling arrangement, circulating fan, circulation air inlet, condenser, multi-layer material frame for conveying, bin both sides; Be divided into two partitions in the drying baker casing; One of them is the heat supply chamber; Another is a drying chamber; The bottom of drying chamber is provided with wet-emitting blower and hydrofuge passage with the place of communicating, heat supply chamber, and the outer surface of drying baker casing 1 is provided with panel.

The present invention can also adopt following technical measures:

The top of described heat supply chamber is provided with axial flow blower, and the bottom is provided with evaporimeter, compressor and throttling arrangement, and the heat supply chamber communicates with condenser through the working medium in the copper pipe, below heat supply chamber 2, also is fixed with conventional PLC numeral temperature and humidity controller 20;

The top of described totally enclosed drying chamber is provided with circulating fan, circulation air inlet, condenser, bottom and is provided with the hydrofuge passage and is fixed with the hydrofuge air channel, and multi-layer material frame for conveying, and the both sides of bin are fixed with respectively with the A baffle plate of many rounds and B baffle plate;

Every round is aimed at each layer on the bin respectively on described A baffle plate and the B baffle plate with many rounds;

The outside of described baffle plate near inlet side, hot air circulation air channel is fixed with the windscreen of which floor different in width up and down;

The two ends of described evaporimeter and condenser are connected with throttling arrangement with compressor respectively;

Described panel is provided with Current Temperatures, current humidity, running time, total run time, product final moisture content, A broken line, A pane, B broken line, B pane, soft-touch control, " setting " membrane keyboard, " sequence number ", " affirmation " key, calendar and " query note " key, and they are through PLC and 10 " touch-screen links together.

Advantage and good effect that the present invention has are: cancellation electrothermal tube and Steam Heating, and directly absorbing environmental air themperature (comprising waste heat) is saved mass energy; Adopt the digital temperature and humidity controller of PLC, and introduce France's (KIMO) sensing equipment and large-scale touch-screen human-machine operation panel, precision is high, stable performance, and set simply, easy to operate, directly hydrofuge is effective, and the energy has been practiced thrift in discarded secondary recovery utilization.

Description of drawings

Fig. 1 is an overall structure sketch map of the present invention;

Fig. 2 is that sketch map is looked on Fig. 1 right side;

Fig. 3 is Fig. 1 schematic top plan view;

Fig. 4 is the operation principle sketch map;

Fig. 5 is the panel construction sketch map.

Among Fig. 1-Fig. 5: 1. drying baker casing, 2. heat supply chamber, 3. drying chamber, 4. axial flow blower, 5. evaporimeter, 6. compressor; 7. throttling arrangement, 8. air inlet, 9. circulating fan, 10. circulation air inlet, 11. condensers, 12. bins; 13.A baffle plate, 14.B baffle plate, 15. hot air circulation air channels, 16. windscreens, 17. wet-emitting blowers, 18. hydrofuge passages; 19. horizontal pore, 20.PLC numeral temperature and humidity controller, 21. panels, 22. Current Temperatures, 23. current humidity, 24. running times; 25. total run time, 26. product final moisture contents, 27.A broken line, 28.A pane, 29.B broken line, 30.B pane; 31. soft-touch control, 32. " setting " membrane keyboard, 33. " sequence numbers ", 34. " affirmation " key, 35. calendars, 36. " query note " key.

The specific embodiment

For further understanding summary of the invention characteristics of the present invention and effect following examples for example now, and conjunction with figs. specifies as follows, sees also Fig. 1-Fig. 5.

Principle of the present invention is as shown in Figure 4: make the hot-air of environment get into evaporimeter 5 through circulating fan 9; Evaporimeter 5 absorbs heat, and through compressor 6, working medium is the hot gas of crossing of HTHP; Pass to condenser 11; In the drying chamber 3 of sealing, circulating fan 9 is given the material on the bin 12 again the heat of condenser 11.Because evaporimeter 5 is not in the drying chamber 3 of sealing; It is the heat in the absorbing environmental always; Cold air is constantly discharged by axial flow blower 4, and forming one is the unidirectional absorption heat circulation at center with evaporimeter 5, passes through compressor 6 continually to condenser 11 heat supplies; Temperature in the sealing drying chamber 3 is constantly risen, and maximum temperature generally is controlled at 85 ℃.Meet consumers' demand fully; In the drying chamber 3 of sealing, after material was heated, the moisture content vaporization constantly increased the hot-air water capacity of closed circulation in the material, when reaching the humidity of setting, through wet-emitting blower 17 and hydrofuge passage 18.Outwards hydrofuge simultaneously, can replenish the new air of part again from circulation air inlet 10, to prevent causing negative pressure in the case.

Like Fig. 1-shown in Figure 3: be divided into two partitions in the drying baker casing 1, one of them is heat supply chamber 2, and another is a drying chamber 3; The top of described heat supply chamber 2 is provided with axial flow blower 4, and the bottom is provided with evaporimeter 5, compressor 6 and throttling arrangement 7, and heat supply chamber 2 communicates with condenser 11 through the working medium in the copper pipe; Form with evaporimeter 5 in the heat supply chamber 2, compressor 6 is the independent heat circulating system at center, in this system; Axial flow blower 4 continuous air draughts make surrounding air and constantly get into evaporimeter 5 from the hydrofuge waste heat in hydrofuge air channel 18, and the fin in the evaporimeter 5 constantly absorbs heat wherein; Heating is the bronze pan tube of one with fin; Thereby the working medium (cold-producing medium) in the heating tube, process compressor 6 becomes the hot gas of crossing of HTHP again, gets into condenser 11; And the cold humid air of process steamer 5 is discharged outside the casees with axial flow blower 4.In order to make full use of heat energy, hydrofuge air channel 18 is installed in evaporimeter 5 before, both reclaimed the waste heat in the hydrofuge, again cold moisture is got rid of outside the case, reach the purpose of the continuous feedway of thermal source; The top of described totally enclosed drying chamber 3 is provided with circulating fan 9, circulation air inlet 10, condenser 11, lower end and is fixed with multi-layer material frame for conveying 12, and the both sides of bin 12 are fixed with the A baffle plate 13 and B baffle plate 14 with many row of horizontal pore 19 respectively, and the bottom of drying chamber 3 is provided with wet-emitting blower 17 and hydrofuge passage 18 with 2 places of communicating, heat supply chamber; Form in the drying chamber 3 with condenser 11, bin 12, hot air circulation air channel 15 is the independent material heating circulation system in center; In the material heating circulation system; Condenser 11 obtains the hot working fluid of sending here from compressor 6 excessively endlessly, through the fin on the bronze pan tube heats cold condenser 11, passes through air in the circulating fan continuous heating, drying chambers 39 again; Material constantly is heated; And the moisture in the material is become in the steam entering air, air self cooling humidification is when airborne humidity reaches setting relative humidity; Start wet-emitting blower 17, with automatic hydrofuge.In order to guarantee that temperature is even in the drying chamber 3, the two ends of described evaporimeter 5 and condenser 11 are connected with throttling arrangement 7 with compressor 6 respectively, form systemic circulation; As shown in Figure 2: be fixed with the windscreen 16 of which floor different length up and down in the outside near the baffle plate 13 of 15 inlet sides, hot air circulation air channel, after circulating fan 9 was transported to hot air circulation air channel 15 with the hot blast of condenser 11, hot blast was in flow process; Through length different each windscreen 16 and A baffle plate 13; Circulate through bin 12 and B baffle plate 14, make air-flow parallel, and make in the drying chamber 3 temperature everywhere with charging tray; Air quantity is consistent, to guarantee the high-quality of product; In order to get rid of the cold humid air in the drying chamber 3 smoothly, circulation air inlet 10 is set, when hydrofuge above drying chamber 3; Because produce negative pressure in the drying baker casing 1, the air inlet 10 that then circulates is opened automatically, replenishes new air; Because new air is come in, make gas temperature decline to some extent temporarily in the case, can facts have proved; Do hydrofuge helpfully like this, it is faster that inner water evaporates is got, and product quality is better.

Electrical control of the present invention is adopted the conventional PLC numeral temperature and humidity controller 20 that is fixed on 2 belows, heat supply chamber, and is introduced France's (KIMO) sensing equipment, and large-scale touch-screen human-machine operation panel 21.

Technical indicator does

Sequence number Title Content 1 Supply voltage Main frame: 380V, 50HZ, controller: 220,50HZ 2 Working environment 5-45 ℃, relative humidity<=95%RH 3 Temperature measurement range -20-+120 ℃, accuracy: ± 0.2 ℃, resolution ratio: 0.1 ℃ 4 The moisture measurement scope 0-100%RH, accuracy: ± 1.5%RH,, resolution ratio: 0.1%RH 5 The time control range 1, total time setting range: 0-9999 divides 2, the split time setting range: the 0-999 branch 6 Touch-screen 10 "

During operation, at first, before baking oven uses; Configure humiture through touch-screen, and by PLC numeral temperature and humidity controller 20 control compressors 6, the start and stop of circulating fan 9 and wet-emitting blower 17; Monitor; Regulate the humiture in the drying baker, heat up and hydrofuge, reach product oven dry purpose.

As shown in Figure 5: can design the page of different panel 21 according to different product, panel 21 can show the operating mode in the drying baker comprehensively, and panel 21 is provided with:

(1). expression drying baker " Current Temperatures " 22 is the time (time is to be divided into unit) that intensification or constant temperature are used below, and " intensification " word glitters the expression heating-up time." constant temperature " word expression constant temperature time that glitters.

(2). expression baking oven " current humidity " 23 is the time (time is to be divided into unit) that liter is wet or constant humidity is used below, and " rising wet " word glitters the wet time of expression liter, and " constant humidity " word glitters the expression constant humidity time.

(3). the expression drying baker is running time 24.

(4). expression drying baker total run time 25 is set.

(5). protection product humidity is set, and also is product final moisture content 26.

(6). a top A broken line 27 expression temperature, oblique line is represented to heat up, numeral intensification degree above it, horizontal line is represented constant temperature, numeral constant temperature capping values above the A broken line 27, below it for setting constant temperature time.Can set the 1-10 section.In the A pane 28 below A broken line 27, in the A pane 28 the constant temperature value that " 0 " numeral is set.

(7). a following B broken line 29 expression humidity, oblique line is represented to rise wet, and numeral rises humidity (%RH) above it, and horizontal line is represented constant humidity, and numeral constant humidity capping values above the B broken line 29 are the setting constant humidity time below it.Can set the 1-10 section.In the B pane 30 on broken line 29, in the B broken line 29 the constant humidity value that " 00 " numeral is set.

(8). move and stop soft-touch control 31.

(9). by " setting " membrane keyboard 32, will show " temperature setting panel ".

(10). " sequence number " 33 is provided with 0-9 number, is used to write down the technological parameter that has moved the 0-10 group, is convenient to historical query.

(11). " affirmation " key 34 is used for above-mentioned sequence number, preservations such as technological parameter and time.

(12). Beijing time calendar 35.

(13). by " query note " key 36, be used to check or call certain data,

They are through PLC and 10 " touch-screen links together.

Its advantage is: adopts PLC numeral temperature and humidity controller, and introduces France's (KIMO) sensing equipment, and large-scale touch-screen human-machine operation panel; Precision is high, stable performance, and set simple; Easy to operate, can whole technical process directly perceived, guaranteed product quality; Directly hydrofuge is effective, and mass energy has been practiced thrift in discarded secondary recovery utilization.

Above-described embodiment describes preferred implementation of the present invention; Be not that scope of the present invention is limited; Design under the prerequisite of spirit not breaking away from the present invention; Various distortion and improvement that those of ordinary skills make technical scheme of the present invention all should fall in the definite protection domain of claims of the present invention.

Claims (4)

1. high-temperature heat pump drying device; It is characterized in that: it comprises A baffle plate (13) and B baffle plate (14), hot air circulation air channel (15), windscreen (16) and the PLC numeral temperature and humidity controller (20) of drying baker casing (1), axial flow blower (4), evaporimeter (5), compressor (6), throttling arrangement (7), circulating fan (9), circulation air inlet (10), condenser (11), multi-layer material frame for conveying (12), bin both sides; Be divided into two partitions in the drying baker casing (1); One of them is heat supply chamber (2); Another is drying chamber (3); The bottom of drying chamber (3) is provided with wet-emitting blower (17) and hydrofuge passage (18) with heat supply chamber (2) place of communicating, and the outer surface of drying baker casing (1) is provided with panel (21); The top of described heat supply chamber ⑵ is provided with axial flow blower (4); The bottom is provided with evaporimeter (5), compressor (6) and throttling arrangement (7); Heat supply chamber (2) communicates with condenser (11) through the working medium in the copper pipe, below the ⑵ of heat supply chamber, also is fixed with PLC numeral temperature and humidity controller (20); The top of totally enclosed said drying chamber (3) is provided with circulating fan (9), circulation air inlet (10), condenser (11); The bottom is fixed with hydrofuge air channel (18); And multi-layer material frame for conveying (12), the both sides of bin (12) are fixed with respectively with the A baffle plate (13) of many rounds and B baffle plate (14).
2. high-temperature heat pump drying device according to claim 1 is characterized in that: described A baffle plate (13) and the last every round of B baffle plate (14) with many rounds aimed at each layer on the bin (12) respectively.
3. high-temperature heat pump drying device according to claim 1 is characterized in that: the outside near the said A baffle plate (13) of inlet side, hot air circulation air channel (15) is fixed with the windscreen (16) of which floor different in width up and down.
4. high-temperature heat pump drying device according to claim 1 is characterized in that: the two ends of described evaporimeter (5) are connected with throttling arrangement (7) with compressor (6) respectively; The two ends of said condenser (11) are connected with throttling arrangement (7) with compressor (6) respectively.
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CN201010228320A 2010-07-16 2010-07-16 High-temperature heat pump drying device CN101852538B (en)

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Application Number Priority Date Filing Date Title
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CN101852538B true CN101852538B (en) 2012-10-03

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CN106174642B (en) * 2016-07-25 2018-08-10 吉首大学 Heat-pump-type recuperation of heat Siraitia grosvenorii stirs drying device
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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2180949Y (en) * 1993-02-23 1994-10-26 王奇 Multi-function heat-pump drying machine
CN1280799A (en) * 1999-07-20 2001-01-24 河南农业大学 Roasting equipment and its heating method
CN2593142Y (en) * 2003-01-06 2003-12-17 张璧光 Multifunctional heat pump drier
CN201215431Y (en) * 2008-06-05 2009-04-01 昆明理工大学 Wind quantity variable chamber type medium high temperature heat pump dryer
CN201242340Y (en) * 2008-04-30 2009-05-20 石曾矿 Novel heat pump dehumidification drier
CN101532770A (en) * 2008-07-29 2009-09-16 珠海慧生能源技术发展有限公司 Gas-gas heat pump drier
CN101666576A (en) * 2009-09-21 2010-03-10 宜兴市泽利制冷设备有限公司 Heat pump cyclic medium dehumidification curing barn

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2180949Y (en) * 1993-02-23 1994-10-26 王奇 Multi-function heat-pump drying machine
CN1280799A (en) * 1999-07-20 2001-01-24 河南农业大学 Roasting equipment and its heating method
CN2593142Y (en) * 2003-01-06 2003-12-17 张璧光 Multifunctional heat pump drier
CN201242340Y (en) * 2008-04-30 2009-05-20 石曾矿 Novel heat pump dehumidification drier
CN201215431Y (en) * 2008-06-05 2009-04-01 昆明理工大学 Wind quantity variable chamber type medium high temperature heat pump dryer
CN101532770A (en) * 2008-07-29 2009-09-16 珠海慧生能源技术发展有限公司 Gas-gas heat pump drier
CN101666576A (en) * 2009-09-21 2010-03-10 宜兴市泽利制冷设备有限公司 Heat pump cyclic medium dehumidification curing barn

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