CN208487887U - A kind of closed loop double evaporators drying heat pump - Google Patents
A kind of closed loop double evaporators drying heat pump Download PDFInfo
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- CN208487887U CN208487887U CN201820388106.7U CN201820388106U CN208487887U CN 208487887 U CN208487887 U CN 208487887U CN 201820388106 U CN201820388106 U CN 201820388106U CN 208487887 U CN208487887 U CN 208487887U
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Abstract
The utility model discloses a kind of closed loop double evaporators drying heat pump, which dries heat pump and be made of fluorine system system and drying machine frame；Drying machine frame constitutes closed drying room and indoor medium circulation channel by partition；Main evaporator, secondary evaporator parallel connection constitute the low-pressure area of fluorine system system；Main evaporator is mounted on outside drying room, and secondary evaporator and condenser are mounted in drying room；Compressor outlet is connected to condenser by four-way reversing valve, and condenser connects secondary evaporator, another way connects main evaporator by the way that there are two parallel branches after throttling set all the way；Main evaporator, secondary evaporator pass through four-way valve reversal valve again and are sequentially connected gas-liquid separator, compressor.The utility model closed loop double evaporators drying heat pump is that one kind does not need to change the drying system that can yet dehumidify under operational mode, heating mode, quick heating, drying indoor humidity is controllable, has the characteristics that energy conservation, efficiently dehumidifying, it has been applied to chu chrysanthemum, the drying of mushroom and the recycling of chu chrysanthemum volatile oil at present.
Description
Technical field
The utility model belongs to refrigeration, drying and dehumidifying technology field, is related to a kind of heat pump drying equipment more particularly to one
Kind closed loop double evaporators dry heat pump, removal moisture drying and volatile oil liquefaction recycling especially suitable for food and Ways of Special Agricultural Products.
Background technique
Closed loop double evaporators dry heat pump and are integrally formed machine by fluorine system system and drying machine frame, and heat pump primary and secondary evaporator is simultaneously
Connection constitutes the low-pressure area of fluorine system system, expands low-pressure area capacity, so that secondary evaporator is can get lower temperature, main evaporator is made when dry
For main heat absorbing heat exchanger, the heat in environment is absorbed；Condenser, secondary evaporator and partition constitute the dry system of closing drying room
It unites, a plurality of medium circulation channel is set in drying room, condenser heat medium, the circulation canal for installing secondary evaporator is in drying room
Area of topical hypothermia；Material is by condenser Hot-blast Heating, and moisture, volatile oil are diffused into air and form damp and hot medium in material,
By the damp and hot medium in area of topical hypothermia, moisture and the quick wash rice of volatile oil go out and become dry and cold medium, dry and cold medium and damp and hot Jie
Matter is converged under the driving of axial flow blower, completes the neutralization of humidity and temperature, and the medium after converging is heated through condenser again, so
Circulation completes dry materials and volatile oil recycling.Closed loop double evaporators dry heat pump, are that one kind does not need to change operational mode, rises
The drying system that can also dehumidify under warm mode has the characteristics that energy conservation, efficiently dehumidifying, recycling volatile oil, has been applied to Chu at present
Chrysanthemum, the drying of mushroom and the recycling of chu chrysanthemum volatile oil.
Heat pump drying equipment common at present mainly has Full-closed circulation-type, two kinds of forms of open type.Totally enclosed type circulation is dried
Xeothermic pump is made of in closed baking room dehumidify evaporimeter and condenser, when dehumidification mode, condenser Hot-blast Heating material,
Moisture diffusion in material is set to form damp and hot medium into medium, damp and hot medium all passes through dehumidify evaporimeter surface, removes remuval of damp and hot
Moisture in medium, the evaporator in closed environment and condenser cannot exchange heat with the external world at this time, and evaporator only recycles condenser
The heat of release, will cause it is cold and hot offset, without energy-saving effect, can only heat up by the acting of press, in the dehumidifying stage
Do not heat up ability；When heating mode, need to close dehumidify evaporimeter, to not have dehumidifying effect when heating up, be not achieved with
When control drying room in humidity；Full-closed circulation-type, can be in dehumidification mode and heating mould in order to achieve the purpose that dehumidifying and heating
Constantly switch between formula, causes the fluctuation of system.
Open type dries heat pump, and condenser is mounted in drying room, and evaporator is mounted on outside drying room, and evaporator is constantly from ring
Heat is absorbed in border, condenser Hot-blast Heating material makes moisture diffusion in material form damp and hot medium into medium, works as drying room
When interior damp and hot humidity of media reaches a certain level, due to not having dehumidification device in drying room, drying room discharge unit can only be passed through
Divide damp and hot medium, suck in fresh air and damp and hot medium and reduce humidity, to reach effect on moisture extraction, open type dries heat pump can be to ring
Border pollutes, and is also unfavorable for the collection of by-product.
In conclusion current drying heat pump is difficult to ensure persistently overheating dehumidifying, closed loop drying, and the prior art cannot expire
Volatile oil liquefaction recycling is carried out while sufficient drying materials.
The some double evaporators patents applied in recent years, as " a kind of double evaporators temperature adjustment removes notification number CN101666526B
(Chinese invention patent, number of patent application: 200910183355.8), the temperature adjustment warm removing mechine is complete by two for wet air-conditioner set "
Independent fluorine system system, the air stream for flowing through two evaporators is adjusted according to the water capacity for being adjusted region room air or unit to enter the wind
The air-out humidity of amount control unit, according to the refrigerant for being flowed through two condensers by tune region room air or the adjusting of unit temperature
The leaving air temp of flow control unit realizes continuous, the independent control of unit leaving air temp and humidity.
Notification number CN105021013A " a kind of heat pump system with Exposure degree and multiple-effect dehumidification function ", the heat pump system
By two independent refrigerant circuit systems, by giving, the air hose that return air inlet installs additional realize connection with different hothouse, can be into
The dehumidifying of row open type and enclosed dehumidifying both of which.
Notification number CN106907877A " a kind of double evaporators alternately defrosting net for air-source heat pump units and Defrost method " (in
The patent No.: 201710140965.4), two air-cooled evaporations in parallel are arranged in state's patent of invention in air source heat pump system
Device is switched to another evaporator, and utilize air-source when one of them air-cooled evaporimeter frosting and entrance defrosting mode
The frost layer for the evaporator surface for needing to defrost is melted removal by the condensator outlet high pressure, high temperature refrigerant in heat pump system, is realized
Defrosting, refrigerant does not commutate during realizing defrosting, improves the comfort in use process.
Notification number CN104930740B " a kind of Dual-evaporator refrigeration system " (Chinese invention patent, number of patent application:
201510367396.8) realize that refrigeration system ice making operating condition and cooling condition use different evaporators.
Notification number CN206113184U " double evaporators dehumidifying heat pump unit " (Chinese invention patent, number of patent application:
201621092010.3) switched between dehumidification mode and heating mode by switching solenoid valve, dehumidifying room early period can be effectively improved
Interior temperature quickly increases, and greatly reduces the Energy in use of dehumidifying early period.
These double evaporators patents still realize that function is different from either operation logic of the invention.
Utility model content
In view of the deficiencies of the prior art with defect, the purpose of this utility model is to provide it is a kind of can persistently overheating dehumidifying,
With preferable energy-saving effect, but the closed loop double evaporators list press refrigerating circuit drying heat pump for the recycling volatile oil that can liquefy, closed loop
Double evaporators drying heat pump main evaporator is in parallel with secondary evaporator, and secondary evaporator refrigerant capacity is less in drying room, heat exchange area
Smaller, only a part of circulatory mediator is contacted with secondary evaporator and is exchanged heat in drying room, forms part dehumidifying.
The purpose of this utility model can be achieved through the following technical solutions:
A kind of closed loop double evaporators drying heat pump, the double evaporators are dried heat pump and are made of fluorine system system and drying machine frame,
The double evaporators dry heat pump either all-in-one machine form, is also possible to the heat pump main frame and baking room combination that fluorine system system is constituted
Form；
The drying machine frame constitutes closed drying room and indoor medium circulation channel by partition；
Main evaporator, secondary evaporator parallel connection constitute the low-pressure area of the fluorine system system；Main evaporator is mounted on outside drying room, secondary
Evaporator and condenser are mounted in drying room；
The outlet of compressor one is connected to the condenser by four-way reversing valve, which has two after passing through throttling set
A parallel branch, connects secondary evaporator all the way, and another way connects main evaporator；Main evaporator, secondary evaporator pass through described four again
Logical reversal valve is connected to gas-liquid separator, gas-liquid separator connect compressor.
Further scheme, condenser are formed in drying room as indoor heat source, heating, drying material, secondary evaporator is dried
Area of topical hypothermia provides cooling capacity for medium, the moisture and volatile oil being condensed out in medium；Heat exchange area, the refrigerant of secondary evaporator
Capacity is respectively less than main evaporator, the heat exchange area of condenser, refrigerant capacity.
Further scheme, the throttling set are electric expansion valve；Condenser is finned heat exchanger.
Further scheme, the drying machine frame is interior to be equipped with axial flow blower and pallet, and condenser heats up as dry materials
Heat source, under the action of axial flow blower, formed fin of the air-flow by heat exchanger, heating air simultaneously transfer heat to the object in pallet
Material.
Further scheme, the main evaporator, secondary evaporator fluorine road be respectively disposed with the first electromagnetism two-port valve, second
Electromagnetism two-port valve selects primary and secondary evaporator on-off by the first electromagnetism two-port valve of control, the switch of the second electromagnetism two-port valve.
Further scheme further includes control system, and the control system includes man-machine interface and embedded controller mainboard,
The two is by modbus protocol, the platform that man-machine interface is exchanged as people with machine data, embedded controller detection temperature
Degree, humidity, oxygen concentration, and temperature, humidity, oxygen concentration parameter are transferred to man-machine interface and shown, embedded controller into
Row logical process, using temperature as target, start and stop compressor；Using humidity as target, carry out pattern switching, control unit whether into
The capable process that eases back；By detecting material moisture diffusion speed into medium, the stage locating for drying materials is judged.
Compared with the existing technology, the utility model has the following beneficial effects:
1, since secondary evaporator refrigerant capacity is less, it will not unite to operate normally to fluorine system in heating mode operation and cause to rush
It hits, guarantees also dehumidify when unit heating；
2, the medium of heat exchange only accounts for a part of all circulatory mediators in local dehumidification process, not will cause enclosure space
Interior evaporator with condenser is cold and hot offsets；
3, part dehumidifying maintains secondary evaporator equalized temperature, secondary evaporator be maintained at dew-point temperature in drying room hereinafter,
It is able to achieve in drying course and persistently adjusts drying indoor humidity；
4, drying course is not required to switching unit operational mode, is able to achieve and is rapidly heated and humid control, entire drying course
By the moisture and volatile oil in a small amount of multiple condensation damp-heat air, drying materials and volatile oil recycling are realized；
5, drying course is completed in closed circulating drying environment, and the volatile oil in material does not diffuse into external environment
In, the outer main evaporator of drying room can constantly absorb heat from environment, not only increase drying indoor temperature rising speed, it is ensured that
The runnability of unit.
Detailed description of the invention
Fig. 1 is the utility model structure diagram.
Fig. 2 is the utility model medium circulation channel cycle schematic diagram.
In figure: 1- gas-liquid separator, 2- four-way reversing valve, 3- compressor, 4- main evaporator, 5- pallet, 6- drying room frame
Frame, 7- condenser, 8- axial flow blower, 9- throttling set, 10- secondary evaporator, 11- the first electronics two-port valve, the second electronics of 12- two
Port valve.
Specific embodiment
The utility model is described in further detail in the following with reference to the drawings and specific embodiments.
Unless otherwise instructed, " medium " is air below.
Embodiment 1
As shown in Figure 1, a kind of closed loop double evaporators dry heat pump, is united by fluorine system and dried machine frame 6 and constitute, this pair evaporation
Device dries heat pump either all-in-one machine form, is also possible to the form of heat pump main frame and baking room combination that fluorine system system is constituted；
Drying machine frame 6 constitutes closed drying room and indoor medium circulation channel by partition；Main evaporator 4, secondary evaporator 10 are simultaneously
Connection constitutes the low-pressure area of the fluorine system system；Main evaporator 4 is mounted on outside drying room, and secondary evaporator 10 and condenser 7 are mounted on baking
In dry chamber；The outlet of compressor 3 one is connected to the condenser 7 by four-way reversing valve 2, after which passes through throttling set 9
There are two parallel branches, connect secondary evaporator 10 all the way, and another way connects main evaporator 4；Main evaporator 4, secondary evaporator 10 are again
Gas-liquid separator 1,1 connect compressor 3 of gas-liquid separator are connected to by the four-way reversing valve 2.Throttling set 9 is that electronics is swollen
Swollen valve；Condenser 7 is finned heat exchanger.It dries and is equipped with axial flow blower 8 and pallet 5 in machine frame 6, condenser 7 is dry as material
The heat source of dry heating forms fin of the air-flow by heat exchanger under the action of axial flow blower 8, heats air and transfers heat to support
Material in disk 5.Main evaporator 4, secondary evaporator 10 fluorine road be respectively disposed with the first electromagnetism two-port valve 11, the second electromagnetism two
Port valve 12 selects primary and secondary evaporator on-off by the first electromagnetism two-port valve 11 of control, the switch of the second electromagnetism two-port valve 12.
It further include control system, the control system includes man-machine interface and embedded controller mainboard, and the two passes through
Modbus protocol, the platform that man-machine interface is exchanged as people with machine data, embedded controller detect temperature, humidity,
Oxygen concentration, and temperature, humidity, oxygen concentration parameter are transferred to man-machine interface and shown, embedded controller carries out at logic
Reason, using temperature as target, start and stop compressor；Using humidity as target, pattern switching is carried out, whether control unit carries out easing back
Journey；By detecting material moisture diffusion speed into medium, the stage locating for drying materials is judged.
The working method of closed loop double evaporators drying heat pump are as follows:
When drying room is in heating removal moisture drying, compressor 3 is opened, refrigerant forms high temperature under the pressurization of compressor 3
The gaseous coolant of high pressure；Refrigerant flow to condenser 7, the 6 groups of composition sealing and circulating drying of drying machine frame by way of four-way reversing valve 2
Room；After refrigerant release heat in condenser 7, liquid is become by gaseous state, by throttling set 9；It is flowed out from throttling set 9 cold
Matchmaker is divided into two-way, connects secondary evaporator 10 all the way, and another way connects main evaporator 4；First electromagnetism two-port valve of fluorine road arrangement
11, the second electromagnetism two-port valve 12 is opened, and refrigerant absorption heat becomes gaseous state by liquid again in primary and secondary evaporator, is being flowed
First converge before returning four-way reversing valve 2, gas-liquid separator 1 is returned to after four-way reversing valve 2, refrigerant carries out gas-liquid separation, returns to pressure
Contracting machine 3, refrigerant loops back and forth like this, and realizes that double evaporators drying heat pump is rapidly heated, dehumidifies.Heat up removal moisture drying stage refrigerant
Flow direction are as follows: 9 → main evaporator of compressor 3 → four-way reversing valve, 2 → condenser, 7 → throttling set 4,10 → the first electricity of secondary evaporator
Magnetic two-port valve 11, second 1 → compressor of electromagnetism two-port valve 12 → four-way reversing valve, 2 → gas-liquid separator 3.
Embodiment 2
When being in the drying materials later period, humidity of materials is smaller, and drying room temperature is higher, carries out constant temperature dehumidification, to realize
Energy saving baking, the first electromagnetism two-port valve 11 of selection is disconnected, the second electromagnetism two-port valve 12 is logical, and with the operation of full dehumidification mode, refrigerant does not flow
Enter main evaporator 4, refrigerant flows at this time are as follows: compressor 3 → four-way reversing valve, 2 → condenser, 7 → throttling set, 9 → secondary evaporator
10 → the second 1 → compressors of electromagnetism two-port valve 12 → four-way reversing valve, 2 → gas-liquid separator 3.
Embodiment 3
Closed loop double evaporators dry the recycling that heat pump is used for volatile oil:
Drying machine frame 6 constitutes a plurality of medium circulation channel, and medium flows through 7 table of condenser under the driving of axial flow blower 8
Face, heat medium, hot wind transfer heat to the material on pallet 5, and heated material makes moisture and volatile oil in material be diffused into medium
In, damp and hot oiliness air is formed, medium circulation channel is divided into area of topical hypothermia and prefect dielectric channel, and area of topical hypothermia is in medium
The formation of secondary evaporator 10 is installed, prefect dielectric channel is only used as the circulation of medium, handles without liquefaction, and part is low in circulation canal
For warm area because there is the reason of secondary evaporator, windage is greater than prefect dielectric channel, so circulatory mediator with damp and hot medium is in drying room
It is main, it is exchanged heat by the damp and hot medium in the part in area of topical hypothermia and secondary evaporator 10, forms part dehumidifying, moisture and volatile oil are quick
Wash rice, which goes out, becomes dry and cold medium, and dry and cold medium converges before heating again with damp and hot medium, so recycles, aqueous water and volatile oil
Under the effect of gravity, the bottom in channel is flow to along low-temperature space circulation canal inner wall, low-temperature space circulation canal has preferable close
Feng Xing can prevent fluid seepage, open up liquid collection opening in low-temperature space circulation canal bottom, by conduit by aqueous water and volatile oil
It exports to outside drying room, collects the mixture of moisture and volatile oil, pure volatile oil is collected for oil water separator.
Closed loop double evaporators drying heat pump is that one kind does not need to change the drying system that can yet dehumidify under operational mode, heating mode
System, quick heating can control humidity in baking oven at any time, have the characteristics that energy conservation, efficiently dehumidifying, recycling volatile oil, applied at present
It is recycled in chu chrysanthemum, the drying of mushroom and chu chrysanthemum volatile oil.
Fluorine installs four-way reversing valve 2 on the road, and when drying is just completed, drying room temperature is higher at this time, enzymatic activity in material
Also higher, it is unfavorable for material preservation, works under high temperature and will also result in staff's discomfort, power on, change to four-way reversing valve 2 at this time
The matchmaker that turns cold flow direction completes drying room temperature lowering using refrigerant, is able to achieve fast cooling in drying room, guarantees materials quality, also mention
Comfortable working environment is supplied；Fluorine road installation four-way reversing valve 2, may be implemented the accurate control of stoving process, when drying by
When medium in condenser and drying room requires to reduce drying temperature there are the temperature difference or stoving process (such as 50 ° of bakings at the beginning
It is dry, it is changed to 40 ° of drying now), it is powered at this time to four-way reversing valve 2, changes refrigerant flow direction, complete to drop in drying room using refrigerant
Temperature realizes accurate drying.
Refrigerant flows at this time: 7 → four-way reversing valve of compressor 3 → main evaporator, 4 → four-way reversing valve, 2 → condenser 2 →
1 → compressor of gas-liquid separator 3.
Claims (6)
1. a kind of closed loop double evaporators dry heat pump, which is characterized in that the double evaporators dry heat pump by fluorine system system and dryer
Frame (6) is constituted, and double evaporators drying heat pump is integrated machine form, or the heat pump main frame and baking room that are made of fluorine system system
Combined form；
The drying machine frame (6) constitutes closed drying room and indoor medium circulation channel by partition；
Main evaporator (4), secondary evaporator (10) low-pressure area in parallel for constituting the fluorine system system；Main evaporator (4) is mounted on drying
Outdoor, secondary evaporator (10) and condenser (7) are mounted in drying room；
The outlet of compressor (3) one is connected to the condenser (7) by four-way reversing valve (2), which passes through throttling dress
Setting (9), there are two parallel branches afterwards, connect secondary evaporator (10) all the way, and another way connects main evaporator (4)；Main evaporator (4),
Secondary evaporator (10) is connected to gas-liquid separator (1) by the four-way reversing valve (2) again, gas-liquid separator (1) connection compression
Machine (3).
2. a kind of closed loop double evaporators according to claim 1 dry heat pump, which is characterized in that condenser (7) is as baking
Indoor heat source, heating, drying material are done, secondary evaporator (10) forms area of topical hypothermia in drying room, provides cooling capacity for medium,
The moisture and volatile oil being condensed out in medium.
3. a kind of closed loop double evaporators according to claim 1 dry heat pump, which is characterized in that the throttling set (9)
For electric expansion valve；Condenser (7) is finned heat exchanger.
4. a kind of closed loop double evaporators according to claim 1 dry heat pump, which is characterized in that the drying machine frame
(6) axial flow blower (8) and pallet (5), the heat source that condenser (7) heats up as dry materials, in axial flow blower (8) are equipped in
Under effect, fin of the air-flow by heat exchanger is formed, heat air and transfers heat to the material in pallet (5).
5. a kind of closed loop double evaporators according to claim 1 dry heat pump, which is characterized in that the main evaporator (4),
The fluorine road of secondary evaporator (10) is respectively disposed with the first electromagnetism two-port valve (11), the second electromagnetism two-port valve (12), passes through control
The switch of first electromagnetism two-port valve (11), the second electromagnetism two-port valve (12) selects primary and secondary evaporator on-off.
6. closed loop double evaporators according to claim 1-5 dry heat pump, which is characterized in that further include control system
System, the control system include man-machine interface and embedded controller mainboard, and the two passes through modbus protocol, man-machine interface
As the platform that people exchanges with machine data, embedded controller detects temperature, humidity, oxygen concentration, and by temperature, humidity,
Oxygen concentration parameter is transferred to man-machine interface and shows, embedded controller carries out logical process, using temperature as target, start and stop pressure
Contracting machine；Using humidity as target, pattern switching is carried out, whether control unit carries out the process that eases back；Through detection material into medium
Moisture diffusion speed judges the stage locating for drying materials.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820388106.7U CN208487887U (en) | 2018-03-21 | 2018-03-21 | A kind of closed loop double evaporators drying heat pump |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820388106.7U CN208487887U (en) | 2018-03-21 | 2018-03-21 | A kind of closed loop double evaporators drying heat pump |
Publications (1)
| Publication Number | Publication Date |
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| CN208487887U true CN208487887U (en) | 2019-02-12 |
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ID=65255803
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| CN201820388106.7U Expired - Fee Related CN208487887U (en) | 2018-03-21 | 2018-03-21 | A kind of closed loop double evaporators drying heat pump |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108375283A (en) * | 2018-03-21 | 2018-08-07 | 滁州学院 | A kind of closed loop double evaporators drying heat pump and the oil recovery method that volatilizees |
-
2018
- 2018-03-21 CN CN201820388106.7U patent/CN208487887U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108375283A (en) * | 2018-03-21 | 2018-08-07 | 滁州学院 | A kind of closed loop double evaporators drying heat pump and the oil recovery method that volatilizees |
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