CN114198989A - Drying system with heat recovery function - Google Patents
Drying system with heat recovery function Download PDFInfo
- Publication number
- CN114198989A CN114198989A CN202111650163.0A CN202111650163A CN114198989A CN 114198989 A CN114198989 A CN 114198989A CN 202111650163 A CN202111650163 A CN 202111650163A CN 114198989 A CN114198989 A CN 114198989A
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- Prior art keywords
- drying
- signal
- air
- heat recovery
- temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B9/00—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards
- F26B9/02—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in buildings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/02—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/06—Controlling, e.g. regulating, parameters of gas supply
- F26B21/08—Humidity
- F26B21/083—Humidity by using sorbent or hygroscopic materials, e.g. chemical substances, molecular sieves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The invention discloses a drying system with a heat recovery function, which comprises: the server is used for storing the drying control signal and sending out a heat recovery signal; the control end is connected with the server and used for uploading drying control signals to the server and receiving heat recovery signals; the receiving end is connected with the server and used for receiving the drying control signal and the heat recovery signal and responding; the drying control signal and the received heat recovery signal are controlled and selected through the server and the control end, and then the judgment unit sends a backflow water signal when the humidity file in the drying air channel is larger than a humidity rated value; the humid air of higher concentration is suitable for more and selects the heat transfer of the high temperature humid air of cooling water unit in with the drying object passageway to return water air passageway and save to the backward flow aquatic, and then does not use the circulation air passageway, has promoted drying system's application flexibility.
Description
Technical Field
The invention relates to the technical field of drying, in particular to a drying system with a heat recovery function.
Background
The drying system generally exhausts air through a direct exhaust heat pump device, takes away wet air in internal products, and then exhausts air with relatively increased air humidity and temperature;
when the drying system dries a product, a large amount of moisture can be released in the product, so that the moisture of air in the drying room main body of the drying system is continuously increased and finally becomes high-temperature wet air;
however, the existing drying system does not have a timely detection and judgment mode for the temperature and humidity in the drying environment, so that corresponding heat recovery processing cannot be flexibly selected according to the temperature and humidity, and the power consumption loss in the cooling water backflow process and the low efficiency of the circulating air application are caused; therefore, a drying system with a heat recovery function is provided.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a drying system with a heat recovery function, wherein a heat recovery unit is used for heating and preheating domestic hot water or production process hot water by recovering heat dissipation capacity in a cooling water system; the temperature and humidity in the drying environment can be detected and judged in time, and corresponding heat recovery processing can be flexibly selected according to the temperature and humidity.
To achieve the above object, an embodiment according to a first aspect of the present invention proposes a drying system with heat recovery function, including:
the server is used for storing the drying control signal and sending out a heat recovery signal;
the control end is connected with the server and used for uploading drying control signals to the server and receiving heat recovery signals;
and the receiving end is connected with the server and used for receiving the drying control signal and the heat recovery signal and responding.
Further, the control terminal includes:
and the heat transfer unit is connected with the server and the receiving end and is used for sending a heat transfer signal in the drying control signal to the receiving end.
Further, the server includes:
the temperature detection unit is connected with the control end and used for detecting the air temperatures of the drying air channel and the receiving end, arranging the air temperatures into a temperature file and uploading the temperature file to the server;
the humidity detection unit is connected with the control end and used for detecting the air humidity of the drying air channel and the air humidity of the receiving end, arranging the air humidity into a humidity file and uploading the humidity file to the server;
the judging unit is connected with the temperature detecting unit and the humidity detecting unit and is used for judging a heat recovery signal according to a temperature file and a humidity file;
wherein the heat recovery signal comprises a circulating heat preservation signal and a return water signal;
the circulating heat preservation unit is connected with the control end and the receiving end and is used for sending a circulating heat preservation signal to the receiving end;
the backflow water unit is connected with the control end and the receiving end and used for sending a backflow water signal to the receiving end;
when the humidity file in the drying air channel is larger than a humidity rated value, the judging unit sends a backflow water signal;
when the temperature file in the drying air channel is greater than the temperature rated value, the judging unit sends out a circulating heat preservation signal;
when the temperature file in the drying air channel is smaller than the temperature rated value, the judging unit sends a temperature increasing signal to the heat transfer unit, and the heat transfer unit increases the current heat output gear value by one gear.
Further, the receiving end includes:
the drying unit is connected with the heat transfer unit and used for receiving a heat transfer signal and transmitting high-temperature drying air in the drying air channel to the dried object channel;
the circulating air unit is connected with the circulating heat preservation unit and used for receiving a circulating heat preservation signal and opening a communication opening of the circulating air channel and the drying object channel, and heat of high-temperature humid air in the drying object channel is transferred to the circulating air channel;
and the cooling water unit is connected with the backflow water unit and used for receiving a backflow water signal and opening the backflow water air channel and the drying object channel communicated opening, and the heat of the high-temperature humid air in the drying object channel is transferred to the backflow water air channel and stored in the backflow water.
Further, when the temperature detection unit detects that the temperature of the drying air channel reaches a rated threshold value, the heat transfer signal is transmitted to the drying unit.
Furthermore, low-temperature dry air is initially stored in the circulating air channel, high-temperature humid air in the dried object channel is mixed with the low-temperature dry air to form mixed air, the circulating air channel is connected with an inlet of the dried air channel, drying agents are stored at the joints of the circulating air channel, the dried air channel and the dried object channel, and the mixed air is dried and then transmitted to the dried air channel to be dried continuously;
wherein the drying agent is used for drying the transmitted high-temperature humid air into high-temperature dry air.
Further, the cooling water unit is a hot water boiler module, and the backflow water air channel is connected with a hot water boiler pipeline.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the drying control signal and the received heat recovery signal are controlled and selected by the server and the control end, and then the judgment unit sends a backflow water signal when the humidity file in the drying air channel is greater than the humidity rated value; the wet air with higher concentration is more suitable for selecting a cooling water unit to transfer the heat of the high-temperature wet air in the drying object channel to the return water air channel and store the heat into the return water, so that a circulating air channel is not used, and the application flexibility of the drying system is improved;
2. when the temperature file in the drying air channel is larger than the temperature rated value, the judging unit sends out a circulating heat preservation signal, and the heat exchange effect of high-temperature humid air with poor high temperature is good, so that the drying treatment in the circulating mixing process is preferentially carried out, and the power consumption of the air channel using the return water is reduced.
3. According to the invention, the mixed air is dried and then transmitted to the drying air channel for continuous drying, so that the use times of the circulating air channel in single drying treatment are reduced, and the forming cost of the mixed air is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a system block diagram of a drying system with a heat recovery function according to the present invention.
Fig. 2 is a flow chart of a drying method with heat recovery function according to the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
When the product is dried specifically by the existing drying system, a large amount of moisture can be released in the product, so that the air moisture in the drying room main body of the drying system is increased continuously, the air moisture is changed into high-temperature humid air at last, and if the humid air with the high temperatures is not discharged out of the drying room main body and is supplemented towards the inside of the drying room main body, the drying effect of the drying system can be seriously influenced. If supply outside microthermal dry air again after discharging the inside humid air of stoving room main part, then can lead to the inside temperature in stoving room to descend widely, seriously influence the subsequent stoving work of drying system, the humid air of high temperature directly discharges to the external environment in addition and goes, can lead to a large amount of heat to give off, has wasted the social energy. The technical scheme provided by the invention mainly provides a drying system with a heat recovery function, so that the temperature and the humidity in the drying environment can be detected and judged in time, and the corresponding heat recovery treatment can be flexibly selected according to the temperature and the humidity, so that the power consumption loss of the corresponding cooling water backflow process is reduced, and the application efficiency of circulating air is improved.
Referring to fig. 1-2, the present invention provides a drying system with heat recovery function, comprising:
the server is used for storing the drying control signal and sending out a heat recovery signal;
the control end is connected with the server and used for uploading the drying control signal to the server and receiving the heat recovery signal;
and the receiving end is connected with the server and used for receiving the drying control signal and the heat recovery signal and responding.
In a specific embodiment, the control terminal comprises:
and the heat transfer unit is connected with the server and the receiving end and is used for sending a heat transfer signal in the drying control signal to the receiving end.
In a particular embodiment, the server comprises:
the temperature detection unit is connected with the control end and used for detecting the air temperatures of the drying air channel and the receiving end, arranging the air temperatures into a temperature file and uploading the temperature file to the server;
the humidity detection unit is connected with the control end and used for detecting the air humidity of the drying air channel and the air humidity of the receiving end, arranging the air humidity into a humidity file and uploading the humidity file to the server;
the control end uploads the detected temperature and humidity data to a temperature and humidity database in a server in a wireless mode after detecting the temperature and humidity by using a wireless temperature and humidity sensor, the temperature and humidity database judges and processes the temperature and humidity data, and then sends corresponding messages to corresponding receiving ends, and the receiving ends execute corresponding programs for message receiving and processing;
the judging unit is connected with the temperature detecting unit and the humidity detecting unit and is used for judging a heat recovery signal according to a temperature file and a humidity file;
wherein the heat recovery signal comprises a circulating heat preservation signal and a return water signal;
the circulating heat preservation unit is connected with the control end and the receiving end and is used for sending a circulating heat preservation signal to the receiving end;
the backflow water unit is connected with the control end and the receiving end and used for sending a backflow water signal to the receiving end;
when the humidity file in the drying air channel is larger than a humidity rated value, the judging unit sends a backflow water signal;
when the temperature file in the drying air channel is greater than the temperature rated value, the judging unit sends out a circulating heat preservation signal;
when the temperature file in the drying air channel is smaller than the temperature rated value, the judging unit sends a temperature increasing signal to the heat transfer unit, and the heat transfer unit increases the current heat output gear value by one gear.
Particularly, the high-concentration wet air is more suitable for selecting a cooling water unit to transfer the heat of the high-temperature wet air in the drying object channel to the return water air channel and store the heat into the return water, so that a circulating air channel is not used, and the application flexibility of the drying system is improved;
the high-temperature humid air with high temperature difference has good heat exchange effect, the heating efficiency of the heat recovery unit far exceeds that of various boilers, and meanwhile, the heat recovery unit provides cold energy for an air conditioning system, is an excellent boiler substitute, and is suitable for projects needing cold energy and heat energy at the same time; the drying treatment in the circulating mixing process is preferentially carried out, so that the power consumption of the return water air channel is reduced;
the operation of the heat recovery unit must have enough basic cold load, when the temperature file in the drying air channel is greater than the temperature rated value, the judging unit sends out a circulating heat preservation signal, and then the heat recovery unit is operated, the heat recovery unit and other single cooling units are combined in one system, and the heat recovery unit can be divided into partial heat recovery and total heat recovery: the temperature of part of heat recovery effluent is generally above 60 ℃, and theoretically can be infinitely close to the exhaust temperature of a compressor; the temperature of the full heat recovery effluent is generally about 45 ℃; and partial heat recovery is suitable for occasions where the refrigeration demand of users is far greater than the heating demand. The water pump is mainly applied to large-scale water chilling units, particularly centrifugal water chilling units.
In a specific embodiment, the receiving end includes:
the drying unit is connected with the heat transfer unit and used for receiving the heat transfer signal and transmitting the high-temperature drying air in the drying air channel to the dried object channel;
the circulating air unit is connected with the circulating heat preservation unit and used for receiving a circulating heat preservation signal and opening a communication opening of the circulating air channel and the drying object channel, and heat of high-temperature humid air in the drying object channel is transferred to the circulating air channel;
the cooling water unit is connected with the backflow water unit and used for receiving backflow water signals and opening a communication opening of the backflow water air channel and the drying object channel, and heat of high-temperature humid air in the drying object channel is transferred to the backflow water air channel and stored in backflow water;
when the temperature detection unit detects that the temperature of the drying air channel reaches a rated threshold value, the heat transfer signal is transmitted to the drying unit.
The circulating air channel is initially stored with low-temperature dry air, the high-temperature humid air in the dried object channel is mixed with the low-temperature dry air to form mixed air, the circulating air channel is connected with an inlet of the dried air channel, drying agents are stored at the joints of the circulating air channel, the dried air channel and the dried object channel, and the mixed air is dried and then transmitted to the dried air channel to be dried continuously;
the drying agent is used for drying the transmitted high-temperature humid air into high-temperature dry air, so that the use times of a circulating air channel in single drying treatment are reduced, and the forming cost of mixed air is reduced; the desiccant is suitable for preventing instruments, meters, electrical equipment, medicines, foods, textiles and other various packaged articles from being affected with damp, and is widely applied in the process of sea transportation, because goods are often affected with damp and go bad due to high temperature in the transportation process, the desiccant can effectively dehumidify and prevent damp, so that the quality of the goods is guaranteed. The drying system with air dehumidification includes: air drying process of warehouse, ship warehouse, pharmaceutical factory, precision machinery, electronic equipment manufacturing plant, compressed air, instrument air, etc.
The cooling water unit is a hot water boiler module, and the return water air channel is connected with a hot water boiler pipeline;
and the hot water boiler control system controls the start and stop of the circulating pump according to the temperature of the boiler water. When the boiler water reaches the set upper limit water temperature, the hot water circulating pump is stopped, and when the boiler water is lower than the set lower limit water temperature, the hot water circulating pump is started; the hot water in the heat preservation water tank is circulated by the hot water circulating pump, and the hot water in the water tank is heated repeatedly, so that the bathing purpose can be realized; the hot water boiler can meet the requirement of people on heating through hot water of a hot water circulating pump circulating heating pipeline.
The working principle of the invention is as follows: the server stores the drying control signal and sends out a heat recovery signal; the control end uploads a drying control signal and receives a heat recovery signal to the server; the receiving end receives the drying control signal and the heat recovery signal and responds; and judging a backflow water signal and a circulating heat preservation signal in the heat recovery signal according to the temperature file and the humidity file, and executing a heat backflow function through the circulating air unit and the cooling water unit.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (10)
1. A drying system with a heat recovery function is characterized by comprising:
the server is used for storing the drying control signal and sending out a heat recovery signal;
the control end is connected with the server and used for uploading drying control signals to the server and receiving heat recovery signals;
and the receiving end is connected with the server and used for receiving the drying control signal and the heat recovery signal and responding.
2. The drying system with heat recovery function as claimed in claim 1, wherein said control terminal comprises:
and the heat transfer unit is connected with the server and the receiving end and is used for sending a heat transfer signal in the drying control signal to the receiving end.
3. The drying system with heat recovery function according to claim 2, wherein the server comprises:
the temperature detection unit is connected with the control end and used for detecting the air temperatures of the drying air channel and the receiving end, arranging the air temperatures into a temperature file and uploading the temperature file to the server;
the humidity detection unit is connected with the control end and used for detecting the air humidity of the drying air channel and the air humidity of the receiving end, arranging the air humidity into a humidity file and uploading the humidity file to the server;
the judging unit is connected with the temperature detecting unit and the humidity detecting unit and is used for judging a heat recovery signal according to a temperature file and a humidity file;
wherein the heat recovery signal comprises a circulating heat preservation signal and a return water signal;
the circulating heat preservation unit is connected with the control end and the receiving end and is used for sending a circulating heat preservation signal to the receiving end;
and the backflow water unit is connected with the control end and the receiving end and used for sending a backflow water signal to the receiving end.
4. The drying system with heat recovery function as claimed in claim 3,
when the humidity file in the drying air channel is larger than the humidity rated value, the judging unit sends a water return signal;
when the temperature file in the drying air channel is greater than the temperature rated value, the judging unit sends out a circulating heat preservation signal;
when the temperature file in the drying air channel is smaller than the temperature rated value, the judging unit sends a temperature increasing signal to the heat transfer unit, and the heat transfer unit increases the current heat output gear value by one gear.
5. The drying system with heat recovery function as claimed in claim 2, wherein said receiving end comprises:
the drying unit is connected with the heat transfer unit and used for receiving a heat transfer signal and transmitting high-temperature drying air in the drying air channel to the dried object channel;
the circulating air unit is connected with the circulating heat preservation unit and used for receiving a circulating heat preservation signal and opening a communication opening of the circulating air channel and the dried object channel;
and the cooling water unit is connected with the backflow water unit and used for receiving a backflow water signal and opening the communication opening of the backflow water air channel and the drying object channel.
6. The drying system with heat recovery function as claimed in claim 5, wherein the temperature detecting unit detects that the temperature of the drying air channel reaches a rated threshold value, and transmits a heat transfer signal to the drying unit.
7. The drying system with heat recovery function as claimed in claim 5, wherein the circulation air channel initially stores low temperature drying air, the high temperature humid air in the drying object channel is mixed with the low temperature drying air to form mixed air, and the circulation air channel is connected with the drying air channel inlet.
8. The drying system with heat recovery function as claimed in claim 5, wherein the circulating air channel, the drying air channel and the drying object channel are respectively stored with desiccant, and the mixed air is dried and then transmitted to the drying air channel for further drying.
9. The drying system with heat recovery function as claimed in claim 5, wherein the cooling water unit is a hot water boiler module, and the return water air passage is connected to a hot water boiler pipe.
10. The drying system with heat recovery function as claimed in claim 5, wherein the drying method of the drying system is as follows:
step one, a server stores a drying control signal and sends a heat recovery signal;
secondly, the control end uploads a drying control signal and receives a heat recovery signal to the server;
step three, the receiving end receives the drying control signal and the heat recovery signal and responds;
judging a return water signal and a circulating heat preservation signal in the heat recovery signal according to the temperature file and the humidity file;
step five, the circulating air unit receives a circulating heat preservation signal and opens a communication opening of the circulating air channel and the drying object channel, and heat of high-temperature humid air in the drying object channel is transferred to the circulating air channel;
and step six, the cooling water unit receives the backflow water signal and opens a communication opening of the backflow water air channel and the drying object channel, and heat of high-temperature humid air in the drying object channel is transferred to the backflow water air channel and stored in backflow water.
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| CN202111650163.0A CN114198989B (en) | 2021-12-31 | 2021-12-31 | Drying system with heat recovery function |
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| CN202111650163.0A CN114198989B (en) | 2021-12-31 | 2021-12-31 | Drying system with heat recovery function |
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| CN114198989A true CN114198989A (en) | 2022-03-18 |
| CN114198989B CN114198989B (en) | 2023-08-11 |
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| CN113623993A (en) * | 2021-07-21 | 2021-11-09 | 广东申菱环境系统股份有限公司 | Cold-carrying circulating heat recovery high-temperature drying device and control method |
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2021
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|---|---|---|---|---|
| CN1834563A (en) * | 2006-04-22 | 2006-09-20 | 山东泰和东新股份有限公司 | Method of utilizing exhausted steam afterheat from plaster tablet drying machine |
| GB2524581A (en) * | 2014-03-28 | 2015-09-30 | Dbk David & Baader Gmbh | Room drying apparatus and method |
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| CN114198989B (en) | 2023-08-11 |
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