CN106766795A - A kind of tunnel type multi-stage heat pump series connection desiccant dehumidification system - Google Patents

A kind of tunnel type multi-stage heat pump series connection desiccant dehumidification system Download PDF

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Publication number
CN106766795A
CN106766795A CN201611066835.2A CN201611066835A CN106766795A CN 106766795 A CN106766795 A CN 106766795A CN 201611066835 A CN201611066835 A CN 201611066835A CN 106766795 A CN106766795 A CN 106766795A
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CN
China
Prior art keywords
chamber
tunnel
heat pump
drying
stage
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Pending
Application number
CN201611066835.2A
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Chinese (zh)
Inventor
苑亚
杨鲁伟
张振涛
魏娟
杨俊玲
张冲
孙椰望
陈嘉祥
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Technical Institute of Physics and Chemistry of CAS
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Technical Institute of Physics and Chemistry of CAS
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Application filed by Technical Institute of Physics and Chemistry of CAS filed Critical Technical Institute of Physics and Chemistry of CAS
Priority to CN201611066835.2A priority Critical patent/CN106766795A/en
Publication of CN106766795A publication Critical patent/CN106766795A/en
Pending legal-status Critical Current

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26DRYING
    • F26BDRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B15/00Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26DRYING
    • F26BDRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B23/00Heating arrangements
    • F26B23/001Heating arrangements using waste heat
    • F26B23/002Heating arrangements using waste heat recovered from dryer exhaust gases
    • F26B23/005Heating arrangements using waste heat recovered from dryer exhaust gases using a closed cycle heat pump system ; using a heat pipe system

Abstract

The present invention discloses a kind of tunnel type multi-stage heat pump series connection desiccant dehumidification system, including:Multi-stage heating room, multistage moist chamber, tunnel chamber for drying, air -return duct and mixing chamber;Main air blower is provided with the import of the Multi-stage heating room, and is connected with mixing chamber;The Multi-stage heating room outlet is connected with tunnel chamber for drying's import;Tunnel chamber for drying's outlet is connected by air -return duct with multistage moist chamber import;The multistage moist chamber outlet is connected with mixing chamber.The closed multi-stage heat pump desiccant dehumidification system that the present invention is used, prevent the influence of external environment, compared to single-stage Analysis of Heat Pump Drying System, multistage dehumidifying effectively removes the moisture in dry air and reduces the single-stage air temperature difference, Multi-stage heating effectively improves wind pushing temperature and reduces the single-stage air temperature difference, the pressure ratio of compressor is reduced, compressor efficiency is improve, dehumidification rate is effectively increased.

Description

A kind of tunnel type multi-stage heat pump series connection desiccant dehumidification system
Technical field
The present invention relates to the technical field of drying of agricultural byproducts.More particularly, to a kind of tunnel type plural serial stage heat pump Desiccant dehumidification system.
Background technology
Application of the heat pump techniques in terms of dry materials is studied by a large amount of domestic and foreign literatures, in reality processing production practices China is applied.In outdoor environment lower ground area, full-open type system and semi-open type system can easily cause evaporimeter frosting Problem, causes the performance of heat pump relatively low, can even not run normally, and the serious heat pump that hinders should in the popularization of cold district With.During for rising again poor larger, single-stage heat pump is difficult to meet and requires, causes pressure ratio excessive.
Accordingly, it is desirable to provide a kind of closed system, the system can be solved effectively in cold district evaporator with heat pump knot The frost problem larger with the confession return air temperature difference of tunnel type monopole heat pump drying dehumidification system.
The content of the invention
It is an object of the invention to provide a kind of tunnel type multi-stage heat pump series connection desiccant dehumidification system, the system can be effective Ground excludes influence of the extraneous low temperature environment to operation of heat pump operating mode, and connecting desiccant dehumidification system by multi-stage heat pump can be effectively Multistage dehumidifying and Multi-stage heating are carried out, is met for the larger situation of difference of rising again;Operation of heat pump can be reduced by with reference to solar energy Energy consumption, improves operation of heat pump efficiency.
To reach above-mentioned purpose, the present invention uses following technical proposals:
A kind of tunnel type multi-stage heat pump series connection desiccant dehumidification system, including:Multi-stage heating room, multistage moist chamber, tunnel type Hothouse, air -return duct and mixing chamber;
Multi-stage heating room:By the circulation air of frequency or start and stop and blower fan frequency to Multi-stage heating room for adjusting compressor Intensification heating amount is regulated and controled;
Multistage moist chamber:By the circulation air of frequency or start and stop and blower fan frequency to multistage moist chamber for adjusting compressor Cool-down dehumidification amount is regulated and controled;
Tunnel chamber for drying:For the drying of material;
Air -return duct:For transporting hot and humid gas;
Mixing chamber:Air and fresh air after being dehumidified for hybrid cooling;
Main air blower is set at the import of the Multi-stage heating room, and is connected with mixing chamber;The Multi-stage heating room outlet and tunnel Road formula hothouse import is connected;Tunnel chamber for drying's outlet is connected by air -return duct with multistage moist chamber import;It is described many Level moist chamber outlet is connected with mixing chamber.
Further, the Multi-stage heating room includes at least two condensers;The multistage moist chamber is steamed comprising at least two Hair device;Each evaporator is connected by compressor with condenser, and condenser is connected composition with evaporator independently by expansion valve again Heat pump, at least two independent heat pumps constitute multilevel heat pump systems;
Preferably, the main air blower is frequency conversion fan, according to the frequency of required air circulation regulating main air machine, makes circulated air Amount meets system and dries working condition requirement, control air circulation regulation rate of drying;The compressor is frequency-changeable compressor.
Further, the main air blower is abundant with the condenser distance of Multi-stage heating room, to ensure to make air-flow in Multi-stage heating Room is evenly distributed;Preferably, the distance is more than 0.5m.
Water storage tray is placed in evaporator bottom in the multistage moist chamber, and water storage tray is provided with discharge line.
Anterior and the afterbody of the tunnel chamber for drying are respectively provided with porous plate, and set tunnel chamber for drying front door and tunnel Road formula hothouse back door.
Water fender is set between the multistage moist chamber and mixing chamber.
The peripheral structure of the tunnel type multi-stage heat pump series connection desiccant dehumidification system is insulation material;Preferably, it is described Insulation material is polyurethane thermal insulation board.
Described tunnel type multi-stage heat pump series connection desiccant dehumidification system also includes solar energy system, and the solar energy system is by saturating Light thermal insulation board, adsorption structure and fresh wind port composition, and connected by fresh wind port with mixing chamber;Its outdoor that can preheat the system of covering Fresh air.
The printing opacity thermal insulation board is effectively to transmit more sunshine and heat-blocking action.
Heat-storing material is put inside the adsorption structure, solar energy sorbing material is put in outer surface, can effectively adsorb the sun Energy and energy storage.
The fresh wind port is the air-valve of adjustable opening.
The system is controlled by controlling switch, temperature controller, humidity controller, PLC panels;Relevant control journey Sequence is write and is completed using any method known in the art.
A kind of method of desiccant dehumidification system dried material of being connected using above-mentioned tunnel type multi-stage heat pump:
In the presence of main air blower, gas carries out stepped heating intensification from the 1st grade of condenser to n-th grade of condenser successively, The gas that stepped heating heats up enters into tunnel chamber for drying, and heat-moisture transfer is carried out with fresh material, obtains hot and humid Gas carries out cool-down dehumidification step by step from n-th grade of evaporator to the 1st grade of evaporator successively by air -return duct, step by step after cool-down dehumidification Air enters into mixing chamber, is again introduced into completing circulation to n-th grade of condenser from the 1st grade of condenser by main air blower;
Wherein, the fresh material is loaded in tunnel chamber for drying back door side, and material is in tunnel chamber for drying Interior gradually to be moved along opposite air supply direction, tunnel chamber for drying front door side is unloaded and sets out dried material;
During dried material, when the benefit air quantity of system is zero, system carries out closed desiccant dehumidification, whole system Moisture removal carried out in multistage moist chamber, exclude influence of the external environment to system conditions.
When material loading or unloading is carried out, system needs to mend a part of fresh air, and fresh air enters solar energy system from fresh wind port System carries out the pre-heat treatment, and mixing chamber is entered from fresh wind port, is mixed with the air after cool-down dehumidification step by step, completes above-mentioned step Suddenly;Due to entering from solar energy system, outdoor fresh air is preheated, and reduces the energy consumption of source pump.
In the operation of whole system, the air quantity and source pump start/stop of compressor of main air blower or frequency conversion are by controlling system System is manipulated;Associated control procedures are write and are completed using any method known in the art.
Beneficial effects of the present invention are as follows:
(1) present invention is for Multi-stage heating dehumidification system effectively removes the moisture in dry air and reduces single-stage air temperature Difference, Multi-stage heating effectively improves wind pushing temperature and reduces the single-stage air temperature difference, reduces the compression ratio of single-stage compressor, improves pressure The efficiency of contracting machine.
(2) present invention effectively improves the efficiency of compressor, reducing energy consumption using solar energy as auxiliary thermal source.Absorption Structure is significantly adsorbed solar energy and is saved, and can improve the utilization rate of solar energy.
(3) peripheral structure of the present invention uses insulation material, and the system is totally-enclosed system, can effectively exclude outer The influence of boundary's environment, makes system remain in that the operating condition of stabilization in low temp area.
(4) tunnel chamber for drying of the invention is tunnel type drying, and tunnel chamber for drying is anterior (at air outlet) one Side draw goes out dried material, and fresh material, Neng Goushi are added in tunnel chamber for drying's afterbody (at return air inlet) side Existing continuous drying, improves drying efficiency.
Brief description of the drawings
Specific embodiment of the invention is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 shows the structural representation of the multi-stage heat pump series connection desiccant dehumidification system of tunnel type;
Wherein, N1, N2, Nn:The first order, the second level, n-th grade of compressor;C1、C2、Cn:The first order, the second level, n-th grade Condenser;V1、V2、Vn:The first order, the second level, n-th grade of expansion valve;E1、E2、En:The first order, the second level, n-th grade of evaporator; 1:Main air blower;2:Multi-stage heating room;3:Porous plate;4:Tunnel chamber for drying front door;5:Tunnel chamber for drying;6:Tunnel type is dried Room back door;7:Air -return duct;8:Multi-stage heating room;9:Water fender;10:Mixing chamber;11、14:Fresh wind port;12:Transparent thermal baffle; 13:Adsorption structure;15:Peripheral structure.
Specific embodiment
In order to illustrate more clearly of the present invention, the present invention is done further with reference to preferred embodiments and drawings It is bright.Similar part is indicated with identical reference in accompanying drawing.It will be appreciated by those skilled in the art that institute is specific below The content of description is illustrative and be not restrictive, and should not be limited the scope of the invention with this.
In the description of the invention, unless otherwise indicated, " multiple " is meant that two or more;Term " on ", The orientation or position relationship of the instruction such as D score, "left", "right", " interior ", " outward ", " front end ", " rear end ", " head ", " afterbody " are Based on orientation shown in the drawings or position relationship, it is for only for ease of and describes the present invention and simplify to describe, rather than instruction or dark Showing the device or element of meaning must have specific orientation, with specific azimuth configuration and operation therefore it is not intended that right Limitation of the invention.
A kind of tunnel type multi-stage heat pump series connection desiccant dehumidification system of embodiment 1
A kind of tunnel type multi-stage heat pump series connection desiccant dehumidification system, as shown in figure 1, including:Remove Multi-stage heating room 2, multistage Moist chamber 8, tunnel chamber for drying 5, air -return duct 7 and mixing chamber 10;
Main air blower 1 is provided with the import of Multi-stage heating room 2, and is connected with mixing chamber 10;The Multi-stage heating room 2 Outlet is connected with the import of tunnel chamber for drying 5, is respectively provided with porous plate 3 in the anterior of tunnel chamber for drying 5 and afterbody, and set It is equipped with tunnel chamber for drying front door 4 and tunnel chamber for drying back door 6;The tunnel chamber for drying 5 outlet by air -return duct 7 with it is many The level import of moist chamber 8 is connected;The multistage moist chamber 8 outlet is connected with mixing chamber 10, and between setting water fender 9. The Multi-stage heating room 2 comprises at least two condenser C1-Cn;The multistage moist chamber 8 includes at least two evaporator E1- En;Water storage tray is placed in evaporator bottom, and water storage tray is provided with discharge line;Each evaporator passes through compressor and condenser phase Connect, condenser is connected with evaporator by expansion valve constitutes independent heat pump, at least two independent heat pump structures again Into multilevel heat pump system.
The system also includes solar energy system, and the solar energy system is by printing opacity thermal insulation board 12, adsorption structure 13 and fresh air Mouth 11,14 is constituted, and is connected by fresh wind port 14 with mixing chamber 10.
The system also include control system, the control system include controlling switch, temperature controller, humidity controller, PLC panels (do not show) in Fig. 1
The method of the tunnel type multi-stage heat pump of embodiment 2 series connection desiccant dehumidification system dried material
In the presence of main air blower 1, gas carries out stepped heating from the 1st grade of condenser C1 to n-th grades of condenser Cn successively Heat up, the gas that stepped heating heats up enters into tunnel chamber for drying 5, and heat-moisture transfer is carried out with fresh material, obtains high temperature By air -return duct 7, from n-th grade of evaporator En to the 1st, a grade evaporator E1 carries out cool-down dehumidification step by step to the gas of high humidity successively, step by step Air after cool-down dehumidification enters into mixing chamber (10), is again introduced into by main air blower 1 cold from the 1st grade condenser C1 to n-th grades Condenser Cn completes circulation;
Wherein, the fresh material is loaded in the side of tunnel chamber for drying back door 6, and material is in tunnel chamber for drying Gradually moved along opposite air supply direction in 5, the side of tunnel chamber for drying front door 4 is unloaded and sets out dried material, be capable of achieving Continuous drying, improves drying efficiency;
During dried material, when the benefit air quantity of system is zero, system carries out closed desiccant dehumidification, effectively excludes The influence of external environment, makes system remain in that the operating condition of stabilization in low temp area;
When material loading or unloading is carried out, system needs to mend a part of fresh air, and fresh air enters solar energy from fresh wind port 11 System carries out the pre-heat treatment, and mixing chamber 10 is entered from fresh wind port 14, is mixed with the air after cool-down dehumidification step by step, in completion State step;Solar energy effectively improves the efficiency of compressor, reducing energy consumption as auxiliary thermal source.
In the operation of whole system, the air quantity of main air blower 1 and source pump compressor N1-Nn start and stop or frequency conversion pass through Control system is manipulated.
Obviously, the above embodiment of the present invention is only intended to clearly illustrate example of the present invention, and is not right The restriction of embodiments of the present invention, for those of ordinary skill in the field, may be used also on the basis of the above description To make other changes in different forms, all of implementation method cannot be exhaustive here, it is every to belong to this hair Obvious change that bright technical scheme is extended out changes row still in protection scope of the present invention.

Claims (10)

1. a kind of tunnel type multi-stage heat pump series connection desiccant dehumidification system, it is characterised in that including:Multi-stage heating room (2), multistage are removed Moist chamber (8), tunnel chamber for drying (5), air -return duct (7) and mixing chamber (10);
Wherein, main air blower (1) is provided with the Multi-stage heating room (2) import, and is connected with mixing chamber (10);The multistage adds Hot cell (2) outlet is connected with tunnel chamber for drying (5) import;The tunnel chamber for drying (5) outlet by air -return duct (7) with it is many Level moist chamber (8) import is connected;Multistage moist chamber (8) outlet is connected with mixing chamber (10).
2. tunnel type multi-stage heat pump according to claim 1 series connection desiccant dehumidification system, it is characterised in that:The multistage adds At least two condensers are provided with hot cell (2);At least two evaporators are provided with the multistage moist chamber (8);Each evaporator It is connected with condenser by compressor, condenser is connected with evaporator by expansion valve constitutes independent heat pump again, at least Two independent heat pumps constitute multilevel heat pump system;Preferably, the compressor is frequency-changeable compressor.
3. tunnel type multi-stage heat pump according to claim 1 series connection desiccant dehumidification system, it is characterised in that:The main air blower (1) the 1st grade of condenser distance and in Multi-stage heating room (2) fully makes air-flow be distributed in Multi-stage heating room (2) with guarantee It is even;Preferably, the distance is more than 0.5m;Preferably, the main air blower is frequency conversion fan.
4. tunnel type multi-stage heat pump according to claim 2 series connection desiccant dehumidification system, it is characterised in that:The multistage is removed Water storage tray is placed in evaporator bottom in moist chamber (8), and water storage tray is provided with discharge line.
5. tunnel type multi-stage heat pump according to claim 1 series connection desiccant dehumidification system, it is characterised in that:The tunnel type Hothouse (5) is provided with tunnel chamber for drying front door (4) and tunnel chamber for drying back door (6), the front portion of tunnel chamber for drying (5) Porous plate (3) is respectively provided with afterbody.
6. tunnel type multi-stage heat pump according to claim 1 series connection desiccant dehumidification system, it is characterised in that:The multistage is removed Water fender (9) is set between moist chamber (8) and mixing chamber (10).
7. tunnel type multi-stage heat pump according to claim 1 series connection desiccant dehumidification system, it is characterised in that:The tunnel type The peripheral structure of multi-stage heat pump series connection desiccant dehumidification system is insulation material;Preferably, the insulation material is polyurethane guarantor Warm plate.
8. tunnel type multi-stage heat pump according to claim 1 series connection desiccant dehumidification system, it is characterised in that:Described tunnel Formula multi-stage heat pump series connection desiccant dehumidification system also includes solar energy system;The solar energy system is by printing opacity thermal insulation board (12), suction Attached structure (13) and fresh wind port (11,14) are constituted, and are connected by fresh wind port (14) with mixing chamber (10).
9. tunnel type multi-stage heat pump according to claim 8 series connection desiccant dehumidification system, it is characterised in that:The absorption knot Heat-storing material is put inside structure (13), solar energy sorbing material is put in outer surface;The fresh wind port (11,14) is the wind of adjustable opening Valve.
10. a kind of utilization claim 1-9 any described tunnel type multi-stage heat pump series connection desiccant dehumidification system dried materials Method, it is characterised in that:
In the presence of main air blower (1), gas to n-th grade of condenser (Cn) add step by step from the 1st grade of condenser (C1) successively Heat heats up, and the gas that stepped heating heats up enters into tunnel chamber for drying (5), and heat-moisture transfer is carried out with fresh material, obtains Hot and humid gas is lowered the temperature step by step from n-th grade of evaporator (En) to the 1st grade of evaporator (E1) successively by air -return duct (7) Dehumidifying, the air after cool-down dehumidification enters into mixing chamber (10) step by step, is again introduced into from the 1st grade of condenser by main air blower (1) (C1) circulation is completed to n-th grade of condenser (Cn);
Wherein, the fresh material is loaded in tunnel chamber for drying back door (6) side, and material is in tunnel chamber for drying (5) gradually moved along opposite air supply direction in, tunnel chamber for drying front door (4) side is unloaded and sets out dried material;
During dried material, when the benefit air quantity of system is zero, system carries out closed desiccant dehumidification;
When material loading or unloading is carried out, system needs to mend a part of fresh air, and fresh air enters solar energy system from fresh wind port (11) System carries out the pre-heat treatment, and mixing chamber (10) is entered from fresh wind port (14), is mixed with the air after cool-down dehumidification step by step, completes Above-mentioned steps.
CN201611066835.2A 2016-11-25 2016-11-25 A kind of tunnel type multi-stage heat pump series connection desiccant dehumidification system Pending CN106766795A (en)

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Cited By (5)

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CN107289767A (en) * 2017-06-23 2017-10-24 中国科学院理化技术研究所 A kind of tunnel type plural serial stage Analysis of Heat Pump Drying System
CN107560397A (en) * 2017-08-09 2018-01-09 中国科学院理化技术研究所 A kind of Multi-layer belt type drying system based on multi-stage heat pump series connection
CN107687759A (en) * 2017-08-09 2018-02-13 中国科学院理化技术研究所 A kind of Multi-layer belt type drying system in parallel based on two-stage heat pump
CN107764036A (en) * 2017-10-31 2018-03-06 江苏天舒电器股份有限公司 A kind of frostless, Multivariable Coupling type heat pump hot blast stove system
CN108868858A (en) * 2018-03-26 2018-11-23 西安建筑科技大学 A kind of supply air system for realizing natural energy dehumidifying using subterranean tunnel wall surface

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107289767A (en) * 2017-06-23 2017-10-24 中国科学院理化技术研究所 A kind of tunnel type plural serial stage Analysis of Heat Pump Drying System
CN107560397A (en) * 2017-08-09 2018-01-09 中国科学院理化技术研究所 A kind of Multi-layer belt type drying system based on multi-stage heat pump series connection
CN107687759A (en) * 2017-08-09 2018-02-13 中国科学院理化技术研究所 A kind of Multi-layer belt type drying system in parallel based on two-stage heat pump
CN107560397B (en) * 2017-08-09 2020-06-16 中国科学院理化技术研究所 Multi-layer belt type drying system based on multi-stage heat pump series connection
CN107764036A (en) * 2017-10-31 2018-03-06 江苏天舒电器股份有限公司 A kind of frostless, Multivariable Coupling type heat pump hot blast stove system
WO2019085453A1 (en) * 2017-10-31 2019-05-09 江苏天舒电器有限公司 Frostless multivariable coupled type heat pump hot blast stove system
CN107764036B (en) * 2017-10-31 2019-11-05 江苏天舒电器有限公司 A kind of frostless, Multivariable Coupling type heat pump hot blast stove system
CN108868858A (en) * 2018-03-26 2018-11-23 西安建筑科技大学 A kind of supply air system for realizing natural energy dehumidifying using subterranean tunnel wall surface

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