CN1766217A - Drying device and drying process control method - Google Patents
Drying device and drying process control method Download PDFInfo
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- CN1766217A CN1766217A CN 200410072502 CN200410072502A CN1766217A CN 1766217 A CN1766217 A CN 1766217A CN 200410072502 CN200410072502 CN 200410072502 CN 200410072502 A CN200410072502 A CN 200410072502A CN 1766217 A CN1766217 A CN 1766217A
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Abstract
The invention relates to a drying device and control method for drying process. Wherein, the control method comprises: on normal drying state with said heater and cooling circulation system starting, initial setting the first relative humidity as stop criterion to stop heater; detecting relative humidity of said drying device; if said detected relative humidity is same with or less than set value, stopping said heater.
Description
Technical field
The present invention relates to a kind of drying unit.More detailed says, the present invention relates to: the drying course that improves drying unit, when the oven dry operation is near completion, prevent that the too high hot blast of temperature is contacted with clothing, thereby realize the drying unit of safer oven dry operation and the drying course control method (Drying Machine and Method for Controlling Drying Processof Drying Machine) of drying unit.
Background technology
As everyone knows, drying unit is to utilize fan and heater to force to suck extraneous air, after it is heated, and the cylinder inside of blowing of the high temperature air after will heating again, the device of drying clothes.
Specifically, drying unit is to utilize: the fan and the heater that are provided with on the circulation stream that is connected with cylinder, and forced air supply also adds hot-air, and the cylinder inside of blowing of the high temperature air after will heating, thus drying clothes.Then, make the air circulation of cylinder inside, and this air is heated again, carry out drying course with this by the circulation stream.
Carry out in the process of drying operation at above-mentioned drying unit, after the clothing of cylinder inside is dried, be discharged in the air of circulation stream and will contain more moisture.At this moment,, then can cause malaria to flow into cylinder inside again, produce the problem that drying efficiency obviously reduces if do not remove the airborne moisture of discharging from cylinder.
Therefore, common dryer can take following method to remove the airborne moisture of discharging from cylinder: feeding cold water on the circulation stream perhaps is provided with the double-cooled type heat exchanger.
Usually, the wet-out property of dryer is good more, just can shorten the oven dry used time of operation more.But, aforesaid to circulation stream supply water, perhaps use the mode of double-cooled type heat exchanger dehumidifying, obviously can be low owing to dehumidification rate, and be unfavorable for shortening drying time.
Therefore, on circulation stream in the past, be provided as the rapid steamer of refrigerating circulation system component parts, thereby developed the drying unit that can increase substantially dehumidification rate.
But, the drying unit that possesses aforesaid refrigerating circulation system, when being about to finish the oven dry operation, even the moisture in the clothing is all evaporations, refrigerating circulation system and heater continue operation simultaneously, air will reach too high temperature (in general, probably being 130 ℃), therefore can damage clothing or cause the clothing distortion.Thereby can cause the user to produce discontented to product and manufacturer.
Summary of the invention
The present invention proposes in order to improve above-mentioned problem and shortcoming.Therefore, the purpose of this invention is to provide: the relative humidity of measuring drying unit inside, stop or moving heater according to the oven dry situation, thus can be in oven dry operation latter stage, prevent under too high temperature, to dry the drying course control method of the drying unit and the drying unit of operation.
To achieve these goals, drying unit according to the present invention comprises following components and constitutes: to the circulation pipe of cylinder inner loop air; Be arranged at the Air Blast fan in the above-mentioned circulation pipe for the forced circulation air; Heat the heater of the air of above-mentioned circulation; For the air that is recycled to above-mentioned heater is dehumidified, and the refrigerating circulation system that constitutes by rapid steamer, condensing machine, compressor, capillary; Measure the humidity sensor of relative humidity (relative humidity).In above-mentioned drying unit, the feature of the drying course control method of drying unit is to comprise: under above-mentioned heater and the whole normal oven-dried conditions that start of above-mentioned refrigerating circulation system, initial setting is as the stage of the 1st relative humidity of the benchmark that stops above-mentioned heater; Under above-mentioned Air Blast fan and above-mentioned heater and the whole normal oven dry job states that start of above-mentioned refrigerating circulation system, measure the stage of the relative humidity in the above-mentioned drying unit; If the relative humidity of said determination is same as above-mentioned the 1st relative humidity of having set, when perhaps being lower than above-mentioned the 1st relative humidity, stop the stage of the operation of above-mentioned heater.
In addition, for above-mentioned drying course control method, drying unit according to the present invention is made of following components: accommodate the clothing that needs oven dry, and the cylinder of rotatable setting; Be interconnected separately with above-mentioned cylinder, make the air of drawing from a side of above-mentioned cylinder flow into the circulation pipe of the opposite side of above-mentioned cylinder; Be arranged at above-mentioned circulation pipe inside, heater for heating air; In order to promote air to flow, be arranged at the Air Blast fan of above-mentioned circulation pipe inside; Corresponding to the flow direction of air, be arranged at the upstream side of heater, finish the rapid steamer of the exsiccation of the high temperature malaria of discharging from above-mentioned cylinder; Be arranged at the condensing machine of a side of above-mentioned rapid steamer; Measure the humidity sensor of the relative temperature in the above-mentioned cylinder.
As mentioned above, drying unit according to the present invention has following effect: in possessing the drying unit of refrigerating circulation system humidity sensor is installed, thereby is measured the relative humidity in the cylinder when the oven dry operation is carried out.When the oven dry operation is near completion, if the relative humidity that determines is lower than the relative humidity of having set, then stop the operation of heater, only finish remaining oven dry operation with rapid steamer and condensing machine.Therefore, can be effectively and safety dry operation.
Description of drawings
Fig. 1 shows the summary pie graph of drying unit according to an embodiment of the invention;
Fig. 2 is the piece figure that shows the relation between the main composition key element of drying unit according to an embodiment of the invention;
Fig. 3 is the workflow diagram of demonstration according to the drying course control method of the drying unit of the 1st embodiment of the present invention;
Fig. 4 is the workflow diagram of demonstration according to the drying course control method of the drying unit of the 2nd embodiment of the present invention.
The critical piece description of reference numerals
1: cylinder 2: circulation pipe
3: heater 4: Air Blast fan
51: compressor 52: condensing machine
53: rapid steamer 54: capillary
55: condensing water storage barrel 57: humidity sensor
The specific embodiment
Below, with reference to Fig. 1 to Fig. 4, to being described in detail according to embodiments of the invention.
Fig. 1 shows the summary pie graph of drying unit according to an embodiment of the invention.Drying unit according to the present invention is made of following components: cylinder 1; Two ends are connected in above-mentioned cylinder 1, form the circulation pipe 2 of the circulation stream of hot blast; Be arranged at above-mentioned circulation pipe 2, heater for heating air 3; Air Blast fan 4 by above-mentioned circulation pipe 2 forced circulation air.
In addition, above-mentioned circulation pipe 2 inside are provided with: rapid steamer 53 and the condensing machine 52 of removing the airborne moisture of discharging from cylinder 1.Above-mentioned circulation pipe 2 outer setting have: behind refrigerant boil down to high-temperature high-pressure state, to the compressor 51 of above-mentioned condensing machine 52 discharges.
The refrigerant flow that connects above-mentioned condensing machine 52 and rapid steamer 53 is provided with capillary 54.Above-mentioned capillary 54 is the decompressors that reduce to flow into from condensing machine 52 the refrigerant pressure of rapid steamer 53.
Above-mentioned compressor 51, condensing machine 52, rapid steamer 53, capillary 54 form a closed circuit (closed loop), and constitute typical freeze cycle (vapor compression cycle) system 30.
Above-mentioned circulation pipe 2 outer setting have the condensing bucket 55 of accommodating and storing by the condensing water of above-mentioned rapid steamer 53 dehumidifying.
In addition, the humidity sensor 57 that is used to measure the relative humidity in the above-mentioned cylinder 1 is installed in the drying unit of the present invention, with reference to Fig. 2, above-mentioned drying unit inside is provided with the control part 58 that is connected with above-mentioned humidity sensor 57 and heater 3.
With reference to Fig. 3, in the drying unit of structure, as follows as mentioned above according to drying course and the control method thereof of the 1st embodiment of the present invention.
At first, preestablish and store the 1st relative humidity and the 2nd relative humidity arbitrarily in the above-mentioned control part 58.
Above-mentioned the 1st relative humidity is under the normal oven dry job state of above-mentioned heater 3 and the whole operations of above-mentioned refrigerating circulation system, as the rh value of the benchmark that stops above-mentioned heater.Above-mentioned the 2nd relative humidity is under the oven dry job state that has only above-mentioned refrigerating circulation system operation, as the rh value of the benchmark that stops above-mentioned refrigerating circulation system.
In addition, in case the oven dry operation begins, Air Blast fan 4 will move, and air will be mobile by circulation pipe 2, and begin to start the refrigerating circulation system that is made of condensing machine 52 and rapid steamer 53 and the oven dry operation (S11) of heater 3.
In addition, will be heated to be the condition of high temperature by heater 3 by above-mentioned circulation pipe 2 flow air after, flow into cylinder 1 inside, after the clothing of cylinder 1 inside is dried, be discharged to circulation pipe 2.
In addition, the high temperature malaria of discharging from above-mentioned cylinder 1 will then via condensing machine 52, again via heater 3, flow into cylinder 1, drying clothes again via rapid steamer 53 dehumidifying.
At this moment, the air that heats by the heater 3 that is attached to circulation pipe 2 sides will flow into cylinder 1, and oven dry contains the clothing of moisture.Contain wetly air and will be discharged to circulation pipe 2 again.The air of above-mentioned discharge will be heated by heater 3 by after rapid steamer 53 and 52 dehumidifying of condensing machine, flow to cylinder 1 then.And repeatedly repeat above-mentioned process, the clothing in the drying roller 1.
In addition, being attached to humidity sensor 47 in the drying unit will be determined at above-mentioned oven dry operation and carry out in the process, the quality of the steam that contains in the air of unit volume in the drying unit, and under this temperature, the relative humidity (S12) that the percentage between the limit water-vapour density that can contain in the unit volume is represented.
In addition, as mentioned above, relatively the 1st relative humidity of having set in relative humidity of measuring according to humidity sensor 47 and the control part 58 if the relative humidity that determines is higher than above-mentioned the 1st relative humidity, is then proceeded all normal oven dry operations of operation of above-mentioned heater and refrigerating circulation system.If the relative humidity that determines is equal to or less than above-mentioned the 1st relative humidity, the control part 58 that receives electrical signal from above-mentioned humidity sensor 47 will be controlled above-mentioned heater 3, make it stop (S13).
So, the refrigerating circulation system of only useful rapid steamer 53 and condensing machine 52 formations carries out remaining oven dry operation.
In addition, with above-mentioned the 2nd relative humidity of having set in the relative humidity measured more thereafter and the control part 58.If the relative humidity that determines is higher than above-mentioned the 2nd relative humidity, then proceed to utilize the oven dry operation of refrigerating circulation system.If the relative humidity that determines is equal to or less than above-mentioned the 2nd relative humidity S14, control part 58 will be controlled above-mentioned refrigerating circulation system, make its (S15) out of service.
In addition, above-mentioned the 1st relative humidity of having set and the 2nd relative humidity just are stored in the control part 58 when producing.At this moment, the 1st relative humidity is set at about 5%, is used to dry the 2nd relative humidity of finishing and preferably is set at about 1%.
In general, during the operation of above-mentioned heater 3 and above-mentioned refrigerating circulation system, cylinder 1 temperature inside will rise to more than 130 degree Celsius, and the clothing that therefore is in the state that the oven dry operation is near completion can be in the state of high temperature low humidity, thereby sustains damage easily.As mentioned above, after the mensuration relative humidity, when the humidity in the cylinder 1 that determines is low, heater 3 out of service.Utilize the above-mentioned refrigerating circulation system that constitutes by rapid steamer 53 and condensing machine 52 then, carry out being generally under the low temperature and low humidity state about 50 degree Celsius and dry operation, therefore can carry out stable drying course.
Thus, can prevent the too high phenomenon of temperature that above-mentioned heater 3 and above-mentioned refrigeration system cause when all moving, the damage that causes to clothing, thus can carry out stable oven dry operation.
In addition, Fig. 4 is the workflow diagram of demonstration according to the drying course control method of the drying unit of the 2nd embodiment of the present invention.Different with the 1st embodiment is, in above-mentioned control part, preestablish the 1st relative humidity, only with time of above-mentioned refrigerating circulation system operation, stop at above-mentioned heater, start after the stage of above-mentioned refrigerating circulation system, after drying operation according to the above-mentioned setting-up time that is input to control part in advance, stop the operation of refrigerating circulation system.
That is, describe with reference to Fig. 4.Be same as the 1st embodiment, after the oven dry operation begins, the refrigerating circulation system and the heater 3 that are made of compressor 51, condensing machine 52, rapid steamer 53, capillary 54 will all start, and dry operation (S21).
In addition, the humidity sensor 47 that is attached in the drying unit will be measured the relative humidity (S22) of drying in the operation.
In addition, if the relative humidity that determines according to humidity sensor 47 is equal to or less than above-mentioned the 1st relative humidity of having set in the control part 58, above-mentioned humidity sensor 47 will be sent to control part 58 to electrical signal, and control part 58 will be controlled above-mentioned heater 3, make it stop (S23).
After aforesaid process, according to the setting-up time that is input in advance in the control part 58, utilize the drying course (S24) of the refrigerating circulation system that constitutes by rapid steamer 53 and condensing machine 52, passed through setting-up time after, above-mentioned refrigerating circulation system also will stop (S25).
As mentioned above, under the low wet condition of high temperature, interrupt the operation of heater the oven dry operation latter stage in the 2nd embodiment, only utilize refrigerating circulation system, under the state of low temperature and low humidity, finish the oven dry operation.Thereby can realize not only safety but also effectively dry operation.
Right of the present invention is not confined to aforesaid embodiment, but is decided by the record in claims.Under the situation that does not exceed the technology of the present invention scope of putting down in writing in claims, the operator of relevant industries can carry out various deformation and modification to it.
Claims (5)
1, a kind of drying course control method of drying unit is used to control the drying unit that has as lower member: to the circulation pipe of cylinder inner loop air; Be arranged at the Air Blast fan in the above-mentioned circulation pipe for the forced circulation air; Heat the heater of the air of above-mentioned circulation; For the air that is recycled to above-mentioned heater is dehumidified, and the refrigerating circulation system that constitutes by rapid steamer, condensing machine, compressor, capillary; Measure the humidity sensor of relative humidity,
In possessing the drying unit of structure as mentioned above, the drying course control method of drying unit is characterized in that, comprising:
Under above-mentioned heater and the whole normal oven-dried conditions that start of above-mentioned refrigerating circulation system, initial setting is as the stage of the 1st relative humidity of the benchmark that stops above-mentioned heater;
Under above-mentioned Air Blast fan and above-mentioned heater and the whole normal oven dry job states that start of above-mentioned refrigerating circulation system, measure the stage of the relative humidity in the above-mentioned drying unit;
If the relative humidity of said determination is identical with above-mentioned the 1st relative humidity of having set, when perhaps being lower than above-mentioned the 1st relative humidity, stop the stage of the operation of above-mentioned heater.
2, the drying course control method of drying unit according to claim 1 is characterized in that:
The 1st above-mentioned relative humidity is set at 5%.
3, the drying course control method of drying unit according to claim 1 is characterized in that, also comprises:
In the oven dry operation that above-mentioned refrigerating circulation system operation is only arranged, set stage as the 2nd relative humidity of the benchmark that stops above-mentioned refrigerating circulation system;
If the relative humidity that determines is equal to or less than above-mentioned the 2nd relative humidity, the stage of above-mentioned refrigerating circulation system out of service.
4, the drying course control method of drying unit according to claim 1 is characterized in that, also comprises:
After stopping the operation of above-mentioned heater, set the stage of only drying the time of operation with above-mentioned refrigerating circulation system;
After setting is only dried the time of operation with above-mentioned refrigerating circulation system, stop the stage of above-mentioned refrigerating circulation system operation.
5, a kind of drying unit is characterized in that, comprising:
Accommodate the clothing that needs oven dry, and the cylinder of rotatable setting;
Be interconnected separately with above-mentioned cylinder, make the air of drawing from a side of above-mentioned cylinder flow into the circulation pipe of the opposite side of above-mentioned cylinder;
Be arranged at above-mentioned circulation pipe inside, heater for heating air;
In order to promote air to flow, be arranged at the Air Blast fan of above-mentioned circulation pipe inside;
By flow direction corresponding to air, be arranged at the upstream side of heater, the high temperature malaria of finishing discharging from above-mentioned cylinder carries out the rapid steamer of exsiccation, and is arranged at the refrigerating circulation system that the condensing mechanism of a side of above-mentioned rapid steamer becomes;
Measure the humidity sensor of the relative temperature in the above-mentioned cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410072502 CN1766217A (en) | 2004-10-27 | 2004-10-27 | Drying device and drying process control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410072502 CN1766217A (en) | 2004-10-27 | 2004-10-27 | Drying device and drying process control method |
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| Publication Number | Publication Date |
|---|---|
| CN1766217A true CN1766217A (en) | 2006-05-03 |
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ID=36742313
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410072502 Pending CN1766217A (en) | 2004-10-27 | 2004-10-27 | Drying device and drying process control method |
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| CN (1) | CN1766217A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100455966C (en) * | 2007-02-06 | 2009-01-28 | 中国林业科学研究院木材工业研究所 | Wet bulb temperature or humidity control method for drying process |
| CN102656311A (en) * | 2009-12-15 | 2012-09-05 | Lg电子株式会社 | Method for controlling laundry treatment apparatus according to target relative humidity |
| CN110025795A (en) * | 2019-03-18 | 2019-07-19 | 广西扬翔股份有限公司 | Furnace drying method and drying system |
-
2004
- 2004-10-27 CN CN 200410072502 patent/CN1766217A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100455966C (en) * | 2007-02-06 | 2009-01-28 | 中国林业科学研究院木材工业研究所 | Wet bulb temperature or humidity control method for drying process |
| CN102656311A (en) * | 2009-12-15 | 2012-09-05 | Lg电子株式会社 | Method for controlling laundry treatment apparatus according to target relative humidity |
| CN102656311B (en) * | 2009-12-15 | 2014-05-28 | Lg电子株式会社 | Method for controlling laundry treatment apparatus according to target relative humidity |
| US9157178B2 (en) | 2009-12-15 | 2015-10-13 | Lg Electronics Inc. | Method for controlling a laundry treatment apparatus according to target relative humidity |
| CN110025795A (en) * | 2019-03-18 | 2019-07-19 | 广西扬翔股份有限公司 | Furnace drying method and drying system |
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Open date: 20060503 |