CN109556386A - A kind of energy-saving heat pump drying system - Google Patents
A kind of energy-saving heat pump drying system Download PDFInfo
- Publication number
- CN109556386A CN109556386A CN201811332504.8A CN201811332504A CN109556386A CN 109556386 A CN109556386 A CN 109556386A CN 201811332504 A CN201811332504 A CN 201811332504A CN 109556386 A CN109556386 A CN 109556386A
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- China
- Prior art keywords
- heat exchanger
- air
- precool
- heat
- exchanger device
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Classifications
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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
- F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
- F26B21/002—Drying-air generating units, e.g. movable, independent of drying enclosure heating the drying air indirectly, i.e. using a heat exchanger
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H4/00—Fluid heaters characterised by the use of heat pumps
- F24H4/06—Air heaters
-
- 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
- F26B21/004—Nozzle assemblies; Air knives; Air distributors; Blow boxes
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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
- F26B21/04—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure partly outside 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
-
- 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
- F26B21/086—Humidity by condensing the moisture in the drying medium, which may be recycled, e.g. using a heat pump cycle
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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
A kind of energy-saving heat pump drying system, including body, drying shed, return air channel is equipped in the body, it further include that the damp-heat air in precool heat exchanger device, heat pipe evaporator, heat pipe condenser and the sequentially connected compressor of internal body, multi-stage condensing device, restricting element, multi-stage evaporator and blower, drying shed by return air channel successively passes through precool heat exchanger device, heat pipe evaporator, multi-stage evaporator, heat pipe condenser and multi-stage evaporator and forms high temperature dry air and is sent into drying shed by blower.Present invention incorporates heat pump principles, medium is made using environment-friendly type freon refrigerant, take full advantage of function of the heat pump system using electric power energy realization to air heating and temperature drop condensate, and heat pipe and precool heat exchanger device act on the principle that heat recovery shifts, to realize the double effect of environmental protection and economize on electricity consumption reduction, it is obviously improved society and economic benefit.
Description
Technical field
The invention belongs to technical field of heat pumps, and in particular to a kind of energy-saving heat pump drying system.
Background technique
With the increasingly raising that air contaminant treatment requires, the use limitation of coal and fuel oil is more aggravated, is replaced
Energy mode be electricity, exactly under this overall background, steam compression heat pump drying system using more and more common, it is adjoint and
The trend come is exactly to create the heat pump system of more power and energy saving.Currently, drying is the application that heat pump most has development, especially to temperature
The drying for spending sensitive materials, is the main application of modern industry heat pump.With the growth required advanced dehumidifying technology, from product
Quality, energy saving, environmental protection etc. consider that heat pump drying becomes more important.
Existing Analysis of Heat Pump Drying System connects heat pump system by air -return duct, air delivery duct and drying shed forms air circulation,
Damp-heat air enters in air -return duct from drying shed, carries out cool-down dehumidification by evaporator, condenser respectively, and xeothermic air is logical
It crosses air delivery duct and enters drying shed, so that the material in drying shed be dried.But existing Analysis of Heat Pump Drying System there is
The disadvantages of air circulation is insufficient, energy consumption is high, system space volume is big.
And in the heat pump course of work, water temperature and air themperature in air are all in dynamic change, and external environment
In, the different temperatures in season and the difference of humidity are equally huge, and existing heat pump system does not account for the mutual of factors
It influences, results in and cannot achieve intelligent control in the course of work, cause the loss of a large amount of energy, and system operation is also inadequate
Stablize.
Summary of the invention
The purpose of the present invention is to provide a kind of energy-saving heat pump drying systems, realize round-the-clock environmental protection and economize on electricity consumption reduction
Double effect.
To achieve the goals above, the present invention provides a kind of energy-saving heat pump drying system, including body, drying shed, institute
It states and is equipped with return air channel in body,
It further include precool heat exchanger device, heat pipe evaporator, heat pipe condenser and the sequentially connected compression set on internal body
Machine, multi-stage condensing device, restricting element, multi-stage evaporator and blower,
Damp-heat air in drying shed is successively passed through precool heat exchanger device, heat pipe evaporator, multi-stage evaporator, heat by return air channel
Pipework condensation device and multi-stage evaporator form high temperature dry air and are sent into drying shed by blower.
After blower and compressor are opened, the damp-heat air in drying shed is under the action of blower, into precool heat exchanger device
Middle carry out heat exchange is realized and cools down for the first time, and coagulates with a small amount of moisture, then by heat pipe evaporator outer surface, passes through
The endothermic effect of heat pipe evaporator internal heat medium, damp-heat air realize second of temperature drop, and solidifying with a small amount of moisture
Out, multiple temperature drop then has been carried out disposably by multi-stage evaporator outer surface, and largely has coagulated moisture, finally again successively
It by heat pipe condenser, multi-stage condensing device, is gradually warmed, eventually becomes high temperature heated dry air and be sent to drying shed, to drying
Material carries out desiccation in room, then returns to precool heat exchanger device and continues next round circulation, and successively sequence is constantly reciprocal, realizes entire heat
Pump drying process.
Therefore, the present invention passes through the setting of multistage pipeline, takes full advantage of heat pump system and is realized using electric power energy to sky
The principle that the function and heat pipe and precool heat exchanger device of gas heating and temperature drop condensate shift heat recovery acts on, to realize
The double effect of environmental protection and economize on electricity consumption reduction, is obviously improved society and economic benefit.
Preferably, it wherein the compressor uses environment-friendly type freon refrigerant, is installed in body.
Preferably, the environment-friendly type freon refrigerant is one of substance being made of R134a, R245fa or more
Kind.
Wherein restricting element includes electric expansion valve, heating power expansion valve or capillary, is installed in body.
Wherein multi-stage evaporator can be arranged side by side by multiple evaporators, occupied space and small in size, and be serially connected, to
Dry air passes sequentially through multi-stage evaporator and realizes multiple cooling.Likewise, the multi-stage condensing device can be by multiple condensations
Device is arranged side by side, occupied space and small in size, and is serially connected, and air to be dried passes sequentially through multiple condensations being serially connected
Device realizes multiple heating.
The heat pipe condenser and heat pipe evaporator are finned heat exchanger or micro-channel heat exchanger, are installed in body,
Filled with environment-friendly type freon refrigerant inside it.Wherein environment-friendly type freon refrigerant is the object being made of R134a, R245fa
One of matter is a variety of.
Further, the precool heat exchanger device includes air-cooled precool heat exchanger device and water cooling precool heat exchanger device.
Since the Pre-cooling Mode needed under different season environment is different, the present invention is filled by using air-cooled precool heat exchanger
Setting can voluntarily select pre- using water cooling according to preset occasion mode or seasonal mode first with water cooling precool heat exchanger device, system
Cold or air-cooled pre-cooling on this basis arranges the matched water flow of precool heat exchanger device or outdoor air-introduced machine equipped with variable frequency adjustment
It applies, precool heat exchanger device air inlet/outlet temperature parameter is collected by self controlled element, automatic calculate judges and adjust water flowing and ventilation quantity, real
The heat transfer amount balance of the existing cold and hot two sides of precool heat exchanger device, to guarantee the reliable and stable operation of system.
Water cooling is realized by the way of external condensation water, and external water source circulates, and realizes primary cooling.Its apoplexy
The cold form using access blower, introduces external wind, realizes distinguished and admirable cooling.
Therefore, Analysis of Heat Pump Drying System of the present invention can be according to the variation of external environment, flexible choice precool heat exchanger dress
Set, realize more intelligence can only adjusting and judgement, be more energy-saving and environmentally friendly.
Further, the air-cooled precool heat exchanger device includes air-cooled precool heat exchanger device and the air-cooled precool heat exchanger device of connection
Outdoor air-introduced machine, the air-cooled precool heat exchanger device are plate-fin heat exchanger, and the body side is equipped with the outdoor being in communication with the outside
Air-vent.
Plate-fin heat exchanger is using plate and fin as the heat exchanger of heat transfer element.It is mainly by structures such as plate beam and end sockets
At.If plate Shu Zhongyou dry passage.Fin is placed between two plates in every layer of channel, and is sealed in two sides with strip of paper used for sealing.Wherein fin
There are the forms such as straight, porous, sawtooth and ripple.According to fluid-flow mode difference, cold and hot fluid channel spacing is overlapped, arranges
And it is brazed integral, i.e. manufactured Board beam.Two fluid-flow modes have adverse current, cross-flow and wrong adverse current etc..The master of plate-fin heat exchanger
Want advantage to have, efficiency is high: the disturbance because of fin to fluid constantly updates the boundary layer for constituting thermal resistance, and heat transfer coefficient is generally
3 times of shell-and-tube heat exchanger；And at 1.5~2 DEG C of the small temperature difference, heat recovery effect is good.For gas-gas heat exchange when effect most
It is good.Compact: because most of heat is to be transmitted through fin by plate, the heat transfer area of equipment unit volume is up to 1500 meters/meter.
Light-weight: when heat transfer area is identical, weight is bordering on the 1/5 of shell-and-tube heat exchanger.It is firm: because plate beam is integral part and fin
It play supporting role between two plates, therefore higher operating pressure can be born.
The air-cooled precool heat exchanger device is connected to return air channel, and air to be dried enters return air channel from drying shed, enters back into
Air-cooled precool heat exchanger device, the air after realizing primary cooling realize the dry mistake of cooling, heating using heat pipe evaporator etc.
Journey.The outdoor air-introduced machine introduces extraneous wind from outdoor air-vent, then is blown out by the outlet of outdoor air-introduced machine, realizes air-cooled
Cooling.
Further, the water cooling precool heat exchanger device includes water cooling precool heat exchanger device, and the water cooling precool heat exchanger device is
Finned heat exchanger, the body side are equipped with the water source water inlet and water source water outlet of connection water cooling precool heat exchanger device.
The water cooling precool heat exchanger device realizes condensation, good cooling effect using external water source, and the body side, which is equipped with, to be connected
The water source water inlet and water source water outlet of the cold precool heat exchanger device of water receiving, external water source enter from water inlet, change by water cooling pre-cooling
The condensing water conduit of hot device, then flowed out from outlet, realize condensation.
Further, the internal heat medium of water cooling precool heat exchanger device is water or salt water.
Using water or salt water, damp-heat air to be dried passes through water, salt water or the room with precool heat exchanger device internal flow
Outer air carries out heat exchange, and water or brine source are extensive, at low cost, and good cooling effect.
Further, the water cooling precool heat exchanger device, multi-stage condensing device, heat pipe condenser, multi-stage evaporator and heat pipe
Evaporator is tightly disposed in body side by side.
Water cooling precool heat exchanger device, multi-stage condensing device, heat pipe condenser, multi-stage evaporator and heat pipe evaporator it is tight side by side
Close setting can not only save the structure space of body, can also shorten in system and walk pipe distance, reduce the damage of refrigerant energy
It loses, so that system be made to meet energy-efficient requirement.And the hot side of refrigeration system is condenser by the present invention, cold side is evaporator, is kept away
Having exempted from cold and hot interaction causes temperature to influence each other, while can be to avoid air when passing sequentially through condenser, evaporator and body
Outer wall conducts heat, and keeps the temperature value of air and the design value goodness of fit high, to allow drying temperature in drying shed more
Precisely.
Preferably, the bypass type Analysis of Heat Pump Drying System further includes drip tray, and the drip tray setting is closely being set side by side
The lower section of the water cooling precool heat exchanger device, multi-stage condensing device, heat pipe condenser, multi-stage evaporator and heat pipe evaporator set.It is making
In cold passage, moisture can be constantly precipitated in the process to dehumidify step by step in air, and the moisture being precipitated is under gravity toward dirty
Enter in drip tray, and unified discharge engine body exterior, can cause in refrigerating channel to avoid moisture be precipitated product in internal body
Various equipment dampness or soaked, make various equipment damages.
Further, the multi-stage evaporator includes at least level-one evaporator and secondary evaporimeter, the level-one evaporator
It is finned heat exchanger or micro-channel heat exchanger with secondary evaporimeter.
Further, the multi-stage condensing device includes at least first-stage condenser and secondary condenser, the first-stage condenser
It is finned heat exchanger or micro-channel heat exchanger with secondary condenser.
The condenser and evaporator of Analysis of Heat Pump Drying System of the invention have been all made of two-stage design, and it is solidifying to realize two kinds of temperature drops
The function of water is provided with heat pipe condenser and heat pipe evaporator in the front-rear position of evaporator, realizes one and review pour point depression water
Function is provided with an air-cooled precool heat exchanger device and a water cooling precool heat exchanger device in the upstream of the above heat exchanger position, can root
Open one of precool heat exchanger device according to use occasion or seasonal variations selection, i.e. selection water cooling or air-cooled preheating, and realize
One reviews the function of pour point depression water, so far, has been fully constructed the principal layout of quadruple temperature drop condensate.
Finned heat exchanger is made of partition, fin, strip of paper used for sealing, flow deflector.Fin, flow deflector are placed in adjacent two partition room
And strip of paper used for sealing forms an interlayer, referred to as channel, and such interlayer is stacked according to the different modes of fluid, it is whole to be brazed into one
Body just forms plate beam, and plate beam is the core of plate-fin heat exchanger, is equipped with necessary end socket, adapter tube, support etc. and just constitutes plate wing
Formula heat exchanger.It can be steel, aluminum, steel combined with aluminum, the materials such as copper.Wherein steel finned heat exchanger: air heating
High-efficient, bearing capacity is by force, installation is simple, consumption system capacity is few, takes the radiating mode of convection current, and it is fast to promote temperature Rate；Steel
Material itself has the characteristic of macromolecular, and steam is suitble to penetrate, and when use will not feel apparent drying.Heating is rapid, low-carbon
Energy conservation, it is environmentally protective, peculiar smell, lossless human health will not be generated at high temperature.Steel combined with aluminum finned heat exchanger: in conjunction with tight
Close, thermal resistance is small, good heat-transfer, intensity is high, flow losses are small, Corrosion Protection is strong, not variable under long-term cold and hot operating condition
Shape, long working life；It is cold to carry out wet type in heating air conditioning engineering for whole rolled fin Glabrous thorn, no wrinkle, easy cleaning
The condensed water that fin appearance is easily excluded when but is not easy to tie dirt, fouling in drying heating and other heat exchange occasions.Aluminum fin formula
Heat exchanger: light-weight good heat-transfer, intensity are high, flow losses are small, Corrosion Protection is high, are not easy under long-term cold and hot operating condition
Deformation, long working life.Copper finned heat exchanger: thermal conductivity is good, and rapid heat dissipation is high-efficient, in addition, the copper radiator bodily form is tight
It gathers, takes up space small, efficient, energy conservation.
Micro-channel heat exchanger is exactly heat exchanger of the channel equivalent diameter at 10-1000 μm.In the flat tube of this heat exchanger
There are tens of subtle runners, is connected in both ends and the round collector of flat tube.Partition is set in collector, heat exchanger runner is separated
At several processes.The miniature available material of micro-channel heat exchanger has: polymethyl methacrylate, nickel, copper, stainless steel, ceramics,
Silicon, Si3N4 and aluminium etc..Micro-channel heat exchanger saves fee of material because of full aluminium with the ratio of copper pipe aluminum fin, in structure
It says, same area improves heat exchange efficiency.
Therefore, the present invention selects both heat exchangers, realizes better energy-saving effect.
It further, further include electric-control system, the air-cooled precool heat exchanger matched with devices is equipped with air-cooled variable-frequency adjuster, institute
Water cooling precool heat exchanger matched with devices is stated equipped with water cooling variable frequency adjustment device, the electric-control system respectively with air-cooled variable-frequency adjuster and water
Cold variable frequency adjustment device is electrically connected to each other, and the air-cooled variable-frequency adjuster is automatic to calculate judgement for collecting air inlet/outlet temperature parameter
And adjust ventilation quantity；For collecting air inlet/outlet temperature parameter, automatic calculate judges and adjusts water flow the water cooling variable frequency adjustment device
Amount.
Electric-control system setting realizes the Electric control to whole device in internal body, the start and stop of whole device with
And the control of parameters.Temperature and humidity sensor can be arranged in drying shed, and inductor is electrically connected with electric-control system, pass through drying shed temperature
The variation of degree and humidity, the warm and humid degree that air-cooled variable-frequency adjuster and water cooling variable frequency adjustment device are provided according to temperature and humidity sensor
According to the flexible modulation of realization ventilation quantity and water flow guarantees the heat transfer amount balance of the cold and hot two sides of precool heat exchanger device, to guarantee
The reliable and stable operation of system.
Further, the blower and outdoor air-introduced machine are using axial-flow type, centrifugal or tubular.
Blower and outdoor air-introduced machine can be using any one in these three, and the two can be identical, can also be according to peace
Holding position flexible choice.
Cooling water, salt water or air that the cold source of precool heat exchanger device when actual motion is provided from the external world are considered, with dampening
The difference or seasonal variations in source source, water temperature and air themperature can change, at this time with pass through precool heat exchanger device outside air
Heat exchange amount will be different, therefore there are thermally equilibrated factors.To solve this problem, control system first can be according to preset occasion
Mode or seasonal mode are voluntarily selected using water cooling pre-cooling or air-cooled pre-cooling.
Therefore, the workflow of the entire Analysis of Heat Pump Drying System of the present invention are as follows:
First choice opens blower, then starts compressor, the damp-heat air in drying shed is defeated by return air channel under the action of blower
It is sent to water cooling precool heat exchanger device or air-cooled precool heat exchanger device, carries out heat exchange, damp-heat air with water therein or salt water or air
It realizes and cools down for the first time, and is solidifying out with a small amount of moisture；Then by heat pipe evaporator outer surface, by heat pipe evaporator
The endothermic effect of the heat transferring medium environment-friendly type freon refrigerant in portion, damp-heat air realize second of temperature drop, and with few
It is solidifying out to measure moisture；Then third time and the 4th have disposably been carried out by level-one evaporator and secondary evaporimeter outer surface respectively
Secondary temperature drop, and it is solidifying out with large quantity of moisture；Heat pipe condenser, first-stage condenser and B-grade condensation are finally passed sequentially through again
Device is gradually warmed, and is eventually become high temperature heated dry air and is sent to drying shed, is carried out desiccation to material in drying shed, is then returned
It returns precool heat exchanger device and continues next round circulation, successively sequence is constantly reciprocal, realizes entire heat pump drying process.Wherein coagulate the water of going out
Point drop in drip tray, by can external water suction device, or by drip tray set skewed, be discharged convenient for moisture,
It avoids corroding internal component part.
Beneficial effects of the present invention:
(1) present invention incorporates heat pump principles, make medium using environment-friendly type freon refrigerant, take full advantage of heat pump system and adopt
Realize what function and heat pipe and precool heat exchanger device to air heating and temperature drop condensate shifted heat recovery with electric power energy
Principle effect is obviously improved society and economic benefit to realize the double effect of environmental protection and economize on electricity consumption reduction.
(2) condenser of inventive refrigeration system and evaporator have been all made of two-stage design, realize dual temperature pour point depression water
Function, evaporator front-rear position be provided with heat exchange of heat pipe, realize a function of reviewing pour point depression water, exchanging heat above
The upstream of device position is provided with a water cooling precool heat exchanger device and an air-cooled precool heat exchanger device, can be according to use occasion or season
One of precool heat exchanger device is opened in section variation selection, i.e. selection water cooling or air-cooled preheating, and is realized one and reviewed pour point depression water
Function has so far been fully constructed the principal layout of quadruple temperature drop condensate, so that efficiency is higher, it is more energy saving.
(3) water cooling precool heat exchanger device of the invention, multi-stage condensing device, heat pipe condenser, multi-stage evaporator and heat pipe steam
The setting close side by side for sending out device, can not only save the structure space of body, can also shorten in system and walk pipe distance, reduce system
The loss of cryogen energy, so that system be made to meet energy-efficient requirement.
(4) for the present invention by using air-cooled precool heat exchanger device and water cooling precool heat exchanger device, system first can be according to pre-
If occasion mode or seasonal mode voluntarily select using water cooling pre-cooling or air-cooled pre-cooling, on this basis, to precool heat exchanger
The matched water flow of device or outdoor air-introduced machine are furnished with variable frequency adjustment measure, collect precool heat exchanger device by self controlled element and pass in and out wind-warm syndrome
Parameter is spent, automatic calculate judges and adjusts water flowing and ventilation quantity, realize the heat transfer amount balance of the cold and hot two sides of precool heat exchanger device, from
And guarantee the reliable and stable operation of system.
Detailed description of the invention
Fig. 1 is Analysis of Heat Pump Drying System schematic view of the front view of the present invention.
Fig. 2 is Analysis of Heat Pump Drying System side structure schematic view of the present invention.
Fig. 3 is the same side structure schematic view of Analysis of Heat Pump Drying System of the present invention.
Specific embodiment
To keep the purposes, technical schemes and advantages of the invention implemented clearer, below in conjunction in the embodiment of the present invention
Attached drawing, technical solution in the embodiment of the present invention is further described in more detail.In the accompanying drawings, identical from beginning to end or class
As label indicate same or similar element or element with the same or similar functions.Described embodiment is the present invention
A part of the embodiment, instead of all the embodiments.The embodiments described below with reference to the accompanying drawings are exemplary, it is intended to use
It is of the invention in explaining, and be not considered as limiting the invention.Based on the embodiments of the present invention, ordinary skill people
Member's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.Under
Face is described in detail the embodiment of the present invention in conjunction with attached drawing.
A kind of energy-saving heat pump drying system, in conjunction with shown in Fig. 1 ~ Fig. 2, including body 1, drying shed 2, in the body 1
Equipped with return air channel 3,
Further include precool heat exchanger device 11 inside the body 1, heat pipe evaporator 12, heat pipe condenser 13 and is sequentially connected
Compressor 14, multi-stage condensing device 15, restricting element, multi-stage evaporator 16 and blower 17,
Damp-heat air in drying shed 2 is by return air channel 3 successively by precool heat exchanger device 11, heat pipe evaporator 12, multistage steaming
It sends out device 16, heat pipe condenser 13 and multi-stage evaporator 16 and forms high temperature dry air by the feeding drying shed 2 of blower 17.
After blower 17 and compressor 14 are opened, the damp-heat air in drying shed 2 is changed under the action of blower 17 into pre-cooling
Heat exchange is carried out in thermal 11, realizes and cools down for the first time, and is solidifying out with a small amount of moisture, then by outside heat pipe evaporator 12
Surface, by the endothermic effect of 12 internal heat medium of heat pipe evaporator, damp-heat air realizes second of temperature drop, and is accompanied by
A small amount of moisture is solidifying out, has then disposably carried out multiple temperature drop by 16 outer surface of multi-stage evaporator, and largely coagulates water outlet
Point, heat pipe condenser 13, multi-stage condensing device 15 are finally passed sequentially through again, is gradually warmed, and high temperature heated dry air quilt is eventually become
It is sent into drying shed 2, desiccation is carried out to material in drying shed 2, precool heat exchanger device is then returned and continues next round circulation, successively sequence
It is constantly reciprocal, realize entire heat pump drying process.
Preferably, it wherein the compressor 14 uses environment-friendly type freon refrigerant, is installed in body 1.
Preferably, the environment-friendly type freon refrigerant is one of substance being made of R134a, R245fa or more
Kind.
Wherein restricting element includes electric expansion valve, heating power expansion valve or capillary, is installed in body 1.
Wherein multi-stage evaporator 16 can be arranged side by side by multiple evaporators, occupied space and small in size, and be serially connected,
Air to be dried passes sequentially through multi-stage evaporator 16 and realizes multiple cooling.Likewise, the multi-stage condensing device 15 can be by more
A condenser is arranged side by side, occupied space and small in size, and is serially connected, and air to be dried passes sequentially through multiple be serially connected
Condenser realize multiple heating.
The heat pipe condenser 13 and heat pipe evaporator 12 are finned heat exchanger or micro-channel heat exchanger, are installed on body
In 1, inside filled with environment-friendly type freon refrigerant.Wherein environment-friendly type freon refrigerant is to be made of R134a, R245fa
One of substance or a variety of.
As shown in figure 3, further, the precool heat exchanger device 11 includes that air-cooled precool heat exchanger device 111 and water cooling are pre-
Cooling heat-exchanger 112.
Since the Pre-cooling Mode needed under different season environment is different, the present invention is filled by using air-cooled precool heat exchanger
111 and water cooling precool heat exchanger device 112 are set, system can voluntarily be selected according to preset occasion mode or seasonal mode use first
Water cooling pre-cooling or air-cooled pre-cooling.
Further, as shown in figure 3, the air-cooled precool heat exchanger device 111 includes air-cooled precool heat exchanger device 10 and connection
The outdoor air-introduced machine 20 of air-cooled precool heat exchanger device 10, the air-cooled precool heat exchanger device 10 is plate-fin heat exchanger, in conjunction with Fig. 1 institute
Show, 1 side of body is equipped with the outdoor air-vent 60 being in communication with the outside.
The air-cooled precool heat exchanger device 10 is connected to return air channel 3, and air to be dried enters return air channel 3 from drying shed 2, then
Into air-cooled precool heat exchanger device 10, the air after realizing primary cooling realizes that cooling, heating are dry using heat pipe evaporator 12 etc.
Dry process.The outdoor air-introduced machine 20 introduces extraneous wind from outdoor air-vent 60, then by the outlet of outdoor air-introduced machine 20
Wind cooling temperature lowering is realized in blowout.
Further, as shown in figure 3, the water cooling precool heat exchanger device 112 includes water cooling precool heat exchanger device 30, the water
Cold precool heat exchanger device 30 is finned heat exchanger, and as shown in connection with fig. 1,1 side of body is equipped with connection water cooling precool heat exchanger device
30 water source water inlet 40 and water source water outlet 50.The water source that 1 side of body is equipped with connection water cooling precool heat exchanger device 30 enters
The mouth of a river 40 and water source water outlet 50, external water source enters from water inlet, by the condensing water conduit of water cooling precool heat exchanger device 30, then
It is flowed out from outlet, realizes condensation.
Further, the internal heat medium of water cooling precool heat exchanger device 30 is water or salt water.
Further, in conjunction with shown in Fig. 2 ~ Fig. 3, the water cooling precool heat exchanger device 30, multi-stage condensing device 15, heat pipe condenser
13, multi-stage evaporator 16 and heat pipe evaporator 12 are tightly disposed in side by side in body 1.
And the hot side of refrigeration system is condenser by the present invention, cold side is evaporator, avoids cold and hot interaction and causes temperature
It influences each other, while can conduct heat when passing sequentially through condenser, evaporator with 1 outer wall of body to avoid air, make air
Temperature value and the design value goodness of fit it is high, to keep the drying temperature in drying shed 2 more accurate.
Preferably, as shown in figure 3, the bypass type Analysis of Heat Pump Drying System further includes drip tray 70, the drip tray 70 is set
Set be closely arranged side by side water cooling precool heat exchanger device 30, multi-stage condensing device 15, heat pipe condenser 13, multi-stage evaporator 16 and
The lower section of heat pipe evaporator 12.
Further, the multi-stage evaporator 16 include at least level-one evaporator 161 and secondary evaporimeter 162, described one
Grade evaporator 161 and secondary evaporimeter 162 are finned heat exchanger or micro-channel heat exchanger.
Further, the multi-stage condensing device 15 include at least first-stage condenser 151 and secondary condenser 152, described one
Grade condenser 151 and secondary condenser 152 are finned heat exchanger or micro-channel heat exchanger.
The condenser and evaporator of Analysis of Heat Pump Drying System of the invention have been all made of two-stage design, and it is solidifying to realize two kinds of temperature drops
The function of water is provided with heat pipe condenser 13 and heat pipe evaporator 12 in the front-rear position of evaporator, realizes one and review pour point depression
The function of water is provided with an air-cooled precool heat exchanger device 10 and a water cooling precool heat exchanger in the upstream of the above heat exchanger position
Device 30 can open one of precool heat exchanger device according to use occasion or seasonal variations selection, i.e. selection water cooling or air-cooled preheating,
A function of reviewing pour point depression water is realized again, so far, has been fully constructed the principal layout of quadruple temperature drop condensate.
It further, further include electric-control system 4, the air-cooled precool heat exchanger device 111 is adjusted with air-cooled variable-frequency is arranged with
Device, the water cooling precool heat exchanger device 112 with being arranged with water cooling variable frequency adjustment device, the electric-control system 4 respectively with air-cooled variable-frequency
Adjuster and water cooling variable frequency adjustment device are electrically connected to each other, and the air-cooled variable-frequency adjuster is for collecting air inlet/outlet temperature parameter, certainly
Dynamic calculate judges and adjusts ventilation quantity；The water cooling variable frequency adjustment device is automatic to calculate judgement for collecting air inlet/outlet temperature parameter
And regulating water flow.
The electric-control system 4 is arranged inside body 1, realizes the Electric control to whole device, the start and stop of whole device
And the control of parameters.Temperature and humidity sensor can be arranged in drying shed 2, and inductor is electrically connected with electric-control system 4, pass through drying
The variation of 2 temperature and humidity of room, air-cooled variable-frequency adjuster and water cooling variable frequency adjustment device provide warm and humid according to temperature and humidity sensor
Degree evidence realizes the flexible modulation of ventilation quantity and water flow, guarantees the heat transfer amount balance of the cold and hot two sides of precool heat exchanger device, thus
The reliable and stable operation of guarantee system.
Further, the blower 17 and outdoor air-introduced machine 20 are using axial-flow type, centrifugal or tubular.
Blower 17 and outdoor air-introduced machine 20 can using this in three in any one, the two can be identical, can also root
According to installation site flexible choice.Control system can voluntarily be selected according to preset occasion mode or seasonal mode use water cooling first
Pre-cooling or air-cooled pre-cooling.
Therefore, the workflow of the entire Analysis of Heat Pump Drying System of the present invention are as follows:
First choice opens blower 17, then starts compressor 14, the damp-heat air in drying shed 2 is under the action of blower 17 by return air
Channel 3 is transported to water cooling precool heat exchanger device 30 or air-cooled precool heat exchanger device 10, carries out hot friendship with water therein or salt water or air
It changes, damp-heat air is realized to cool down for the first time, and solidifying out with a small amount of moisture；Then by 12 outer surface of heat pipe evaporator, lead to
The endothermic effect of the heat transferring medium environment-friendly type freon refrigerant inside pipe evaporator 12 is overheated, damp-heat air realizes second
Temperature drop, and it is solidifying out with a small amount of moisture；Then disposably divided by 162 outer surface of level-one evaporator 161 and secondary evaporimeter
The temperature drop of third time and the 4th time has not been carried out, and solidifying out with large quantity of moisture；Finally pass sequentially through again heat pipe condenser 13,
First-stage condenser 151 and secondary condenser 152, are gradually warmed, and eventually become high temperature heated dry air and are sent to drying shed 2, right
Material carries out desiccation in drying shed 2, then returns to precool heat exchanger device and continues next round circulation, successively sequence is constantly reciprocal, realizes
Entire heat pump drying process.The moisture is wherein coagulated to drop in drip tray 70, by can external water suction device, or will connect
Water pond 70 is set as skewed, is discharged convenient for moisture, avoids corroding internal component part.
Embodiment of above is only used to illustrate the technical scheme of the present invention and not to limit it, although referring to the above preferable embodiment party
Formula describes the invention in detail, those skilled in the art should understand that, it can be to technical solution of the present invention
It modifies or equivalent replacement should not all be detached from the spirit and scope of technical solution of the present invention.Those skilled in the art can also be at this
Other variations etc. are done in spirit and are used in design of the invention, without departing from technical effect of the invention.These
The variation that spirit is done according to the present invention, all should be comprising within scope of the present invention.
Claims (10)
1. a kind of energy-saving heat pump drying system, including body (1), drying shed (2), the body (1) is interior to be equipped with return air channel
(3), which is characterized in that further include set on body (1) internal precool heat exchanger device (11), heat pipe evaporator (12), heat pipe cold
Condenser (13) and sequentially connected compressor (14), multi-stage condensing device (15), restricting element, multi-stage evaporator (16) and blower
(17),
Damp-heat air in drying shed (2) successively passes through precool heat exchanger device (11), heat pipe evaporator by return air channel (3)
(12), multi-stage evaporator (16), heat pipe condenser (13) and multi-stage evaporator (16) form high temperature dry air by blower
(17) drying shed (2) are sent into.
2. Analysis of Heat Pump Drying System according to claim 1, which is characterized in that the precool heat exchanger device (11) includes air-cooled
Precool heat exchanger device (111) and water cooling precool heat exchanger device (112).
3. Analysis of Heat Pump Drying System according to claim 2, which is characterized in that air-cooled precool heat exchanger device (111) packet
Include the outdoor air-introduced machine (20) of air-cooled precool heat exchanger device (10) and the air-cooled precool heat exchanger device (10) of connection, the air-cooled precool heat exchanger
Device (10) is plate-fin heat exchanger, and body (1) side is equipped with the outdoor air-vent (60) being in communication with the outside.
4. Analysis of Heat Pump Drying System according to claim 2, which is characterized in that water cooling precool heat exchanger device (112) packet
Water cooling precool heat exchanger device (30) is included, the water cooling precool heat exchanger device (30) is finned heat exchanger, and body (1) side is equipped with
Connect the water source water inlet (40) and water source water outlet (50) of water cooling precool heat exchanger device (30).
5. Analysis of Heat Pump Drying System according to claim 4, which is characterized in that the internal heat of water cooling precool heat exchanger device (30)
Medium is water or salt water.
6. Analysis of Heat Pump Drying System according to claim 4, which is characterized in that the water cooling precool heat exchanger device (30), multistage
Condenser (15), heat pipe condenser (13), multi-stage evaporator (16) and heat pipe evaporator (12) are tightly disposed in body side by side
(1) in.
7. Analysis of Heat Pump Drying System according to claim 1, which is characterized in that the multi-stage evaporator (16) includes at least one
Grade evaporator (161) and secondary evaporimeter (162), the level-one evaporator (161) and secondary evaporimeter (162) are finned change
Hot device or micro-channel heat exchanger.
8. Analysis of Heat Pump Drying System according to claim 1, which is characterized in that the multi-stage condensing device (15) includes at least one
Grade condenser (151) and secondary condenser (152), the first-stage condenser (151) and secondary condenser (152) are finned change
Hot device or micro-channel heat exchanger.
9. Analysis of Heat Pump Drying System according to claim 2, which is characterized in that it further include electric-control system (4), it is described air-cooled pre-
Cooling heat-exchanger (111) becomes with air-cooled variable-frequency adjuster, the water cooling precool heat exchanger device (112) is arranged with water cooling is arranged with
Frequency adjuster, the electric-control system (4) are electrically connected to each other with air-cooled variable-frequency adjuster and water cooling variable frequency adjustment device respectively, the wind
For collecting air inlet/outlet temperature parameter, automatic calculate judges and adjusts ventilation quantity cold variable frequency adjustment device；The water cooling variable frequency adjustment
Device is automatic to calculate judgement and regulating water flow for collecting air inlet/outlet temperature parameter.
10. Analysis of Heat Pump Drying System according to claim 3, which is characterized in that the blower (17) and outdoor air-introduced machine
(20) using axial-flow type, centrifugal or tubular.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811332504.8A CN109556386A (en) | 2018-11-09 | 2018-11-09 | A kind of energy-saving heat pump drying system |
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| CN201811332504.8A CN109556386A (en) | 2018-11-09 | 2018-11-09 | A kind of energy-saving heat pump drying system |
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ID=65865935
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114659158A (en) * | 2022-03-02 | 2022-06-24 | 中铁第四勘察设计院集团有限公司 | Air conditioner |
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