CN103211002A - Air energy heat cycle preserved fruit drying apparatus and automatic temperature control method thereof - Google Patents
Air energy heat cycle preserved fruit drying apparatus and automatic temperature control method thereof Download PDFInfo
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- 238000001035 drying Methods 0.000 title claims abstract description 158
- 235000013399 edible fruits Nutrition 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 26
- 230000004913 activation Effects 0.000 claims description 21
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- 230000008929 regeneration Effects 0.000 abstract 5
- 238000011069 regeneration method Methods 0.000 abstract 5
- 238000005516 engineering process Methods 0.000 description 15
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- 241001093152 Mangifera Species 0.000 description 11
- 235000014826 Mangifera indica Nutrition 0.000 description 11
- 235000009184 Spondias indica Nutrition 0.000 description 11
- 235000015177 dried meat Nutrition 0.000 description 9
- 230000000694 effects Effects 0.000 description 9
- 238000005485 electric heating Methods 0.000 description 6
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- 238000005265 energy consumption Methods 0.000 description 3
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- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 240000000851 Vaccinium corymbosum Species 0.000 description 1
- 235000003095 Vaccinium corymbosum Nutrition 0.000 description 1
- 235000017537 Vaccinium myrtillus Nutrition 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
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- 238000007791 dehumidification Methods 0.000 description 1
- 239000002274 desiccant Substances 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- 229910052742 iron Inorganic materials 0.000 description 1
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- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
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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
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/80—Food processing, e.g. use of renewable energies or variable speed drives in handling, conveying or stacking
- Y02P60/85—Food storage or conservation, e.g. cooling or drying
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Abstract
The invention discloses an air energy heat cycle preserved fruit drying apparatus and an automatic temperature control method thereof. The apparatus comprises an air energy heat pump (1), a dehumidifier (2), drying chambers (3) and heat passing pipelines, wherein the air energy heat pump (1), the drying chambers (3) and the dehumidifier (2) are subjected to sequential circulation connection through the heat passing pipelines, the air energy heat pump (1) is connected with a total heat passing pipe (4), the total heat passing pipe (4) is connected with the plurality of the drying chambers (3) through a plurality of branch heat passing pipes (5) connected in series, the top portion of the drying chambers (3) is provided with a total heat regeneration pipeline (6), branch heat regeneration pipelines (5) on the plurality of the drying chambers (3) are connected in series, and then are connected with the total heat regeneration pipeline (6), the total heat regeneration pipeline (6) is connected with the dehumidifier (2), heat regulation switches (8) are arranged inside every branch heat passing pipe, and the total heat regeneration pipeline is further provided with an exhauster (12). According to the present invention, the series connection heat passing pipeline heat distribution process is adopted to match with the plurality of the drying chambers so as to achieve a function of concurrent drying of multiple varieties of the plurality of the drying chambers through a single heat source.
Description
Technical field
The present invention relates to a kind of preserved fruit drying plant and temperature control method thereof, specifically, relating to a kind of air can thermal cycle preserved fruit drying unit and temperature automatically controlled method thereof.
Background technology
Preserved fruit is a kind of time-honored snack food, and mango dried meat stoving process mainly contains three kinds at present: (1) heated-air drying technology.Mainly with coal-fired or pure electric heating as energy source, with the hot blast that the produces media as oven dry mango dried meat, this method is tradition the most, service time and widest in area; (2) microwave drying process.Adopt microwave mode that the mango dried meat is dried, this method drying rate is fast, but power consumption is big, and is destructive strong to mango dried meat molecule; (3) solar drying technique.This technology is widely used in the west area of the U.S., these method energy-conserving and environment-protective, but be subjected to the weather influence factor big, the scope of application is little.
Just at folklore, it was mainly with the primary raw material of coal as baking mango dried meat in the period of the Ming Dynasty for domestic mango dried meat stoving process.In the nineties in last century, there has been further requirement in country to energy-conservation production and mango dried meat sulfur content gradually, so the electric heating that produces of environmental protection, no sulfur dioxide is heated as the main flow technology of mango dried meat oven dry.In order to make more efficient energy-saving of electric heating heating, drying technology, for this reason, the many experts of domestic industry advance wave upon wave, storm strongholds in defiance of difficulties, at present, domestic drying plant commonly used has tunnel type stoving process, continous way electric heating drying technology, electric heating air compressing, drying technology, but because the electric heating drying technology self has the energy consumption height, limited these technical barriers of load, so this technology still has certain gap with developed countries on energy-saving and cost-reducing research level.
Along with the growth of science and technology, air energy heat pump becomes novel drying unit gradually, and it has efficiently, environmental protection function.Some comparatively simple air energy heat pump fruit drying plants have also appearred at present on the market, but mainly have following shortcoming: what the technology that (1) has now adopted is the technology of the corresponding drying room of an air energy heat pump, therefore, when needs overhaul or stop to toast, air energy heat pump need be closed fully, this is influence baking efficient easily; (2) existing drying room adopts thick iron plate or thermal insulation layer to prevent the leakage of hot gas, and this has improved the cost of manufacture of drying room undoubtedly; (3) existing air energy heat pump adjustment is intelligent inadequately, therefore occurs the long or too short shortcoming of stoving time easily.
Summary of the invention
The purpose of this invention is to provide a kind of air energy thermal cycle preserved fruit drying unit and temperature automatically controlled method thereof, adopt single air energy heat pump that a plurality of drying rooms are carried out circulation heating, and temperature is controlled by intelligence control system, to overcome in the prior art, the energy consumption height, the shortcoming that continuous-running efficiency is low is to reach the purpose of efficiently preserved fruit being carried out continuous drying.
The present invention program is by such realization: constructing a kind of air can thermal cycle preserved fruit drying unit, comprise that air energy heat pump, dehumidifier, drying room and heat threads a pipe, described air energy heat pump, drying room and dehumidifier are threaded a pipe successively by heat, and circulation is connected, described air energy heat pump is connected with a total heat siphunculus, the total heat siphunculus is connected with a plurality of drying rooms by the hot siphunculus of branch of many series connection, the drying room top is provided with the branch product heat cal rod, branch product heat cal rod series connection back on a plurality of drying rooms is connected with total product heat cal rod, and total product heat cal rod is connected with dehumidifier; Be equipped with the accent thermal switch in described each minute hot siphunculus, also be provided with air exhauster on described total backheat pipeline.
The solution of the present invention know-why is: by designing an air energy heat pump as thermal source, and the heat that adopts many series connection is threaded a pipe and is connected with air energy heat pump, realize the effect of toasting of the corresponding a plurality of drying rooms of an air energy heat pump, and by transferring thermal switch to control the size that each divides hot siphunculus to enter the drying room heat, thereby realize the effect that different cultivars is toasted at different drying rooms.In addition, at the drying room top backheat pipeline is set, the waste heat that toasted at drying room is reclaimed, and carry out the dehumidifying of moist hot-air by dehumidifier, form dry air, be conveyed into again and carry out little heating in the air energy heat pump, by hot siphunculus heat is imported drying room at last and utilize again, the effect of air exhauster is to accelerate the speed of hot air flowrate.
Among the present invention, automation conditioning function for lifting device, also be provided with temperature regulation controller in each drying room, described thermoregulator comprises temperature detection device, temperature touch-screen, regulation and control module and signal output module, the temperature detection device is arranged on the drying room interior location, temperature touch-screen, regulation and control module and signal output module are arranged in the outer control box of drying room, and the thermoregulator connection in each drying room is also controlled its corresponding accent thermal switch that divides in the hot siphunculus.The effect of thermoregulator is, temperature in the drying room is monitored in real time, according to the rated temperature that sets, by adjustment module by-pass cock is controlled, realization is regulated the air inflow of hot gas, the effect of temperature touch-screen is the reality of reality to the drying room temperature, and the signal output module effect is to export detected temperature signal.In addition, transferring thermal switch can be general gas thermal valve door or other enclosed switch commonly used.
Among the present invention, described air energy heat pump is connected with console, and described console comprises that signal receives total activation end and signal actuating station, and console is connected with temperature regulation controller in each drying room by lead.Wherein, the effect of signal reception total activation end is to receive the temperature signal of signal output module in each temperature regulation controller, according to temperature information, calculate the air energy heat pump heating power, and, control the power output size of air energy heat pump by the information that the output of signal actuating station is calculated.In addition, reception total activation termination is received in each drying room temperature regulation controller and is shown, air energy heat pump power output total amount of heat receives the total activation end signal actuating station is sent index signal during greater than drying room temperature aequum, can carry out Opportunity awaiting control for linear to air energy heat pump.
Among the present invention, as the further improvement to drying room, described drying room is divided into the outer and drying room internal layer of drying room, forms cavity between drying room skin and the drying room internal layer, and the hot siphunculus of described branch is connected with drying room is outer, and the drying room bottom is provided with logical hot hole.Two-layer drying room, can be so that heat at first enters into the drying room internal layer again by cavity, thereby make heat can surround internal layer, the loss of heat when reducing the transmission of drying room heat, in addition, be arranged on the logical hot hole of drying room bottom, the backheat pipeline formation thermal convection current with the top makes the hot-air that rises be more convenient for recycling.
Among the present invention, done to make thermal air current, described total heat siphunculus, divided hot siphunculus, total product heat cal rod and divide on the product heat cal rod and be equipped with check valve to single.In addition, according to existing air energy heat pump watt level, the drying room that hot siphunculus is connected is 1-8, and the drying room of the above-mentioned number of connecting can just in time make heat that air energy heat pump provides in scope of application value.
Among the present invention, the temperature automatically controlled method as to air energy thermal cycle preserved fruit drying unit may further comprise the steps:
1. temperature in the default drying room: by the thermoregulator in the drying room being set, the rated temperature in the default drying room;
2. default air energy heat pump rated power: the signal that sends to console by the signal output module in the thermoregulator in each drying room, signal in the console receives the total activation end and calculates required drying room institute calorific requirement total amount, send fill order to signal actuating station, signal actuating station control air energy heat pump carries out the output of rated power;
3. the drying room temperature is carried out constant adjusting: after air energy heat pump started, temperature regulation controller was exchanged the big or small degree of thermal switch unlatching and is regulated according to temperature level in the drying room, with the constant size of temperature in the control drying room.
Among the present invention, except above-mentioned three steps realize the temperature automatically controlled method, also comprise air energy heat pump automatic stand-by regulating step: when heat that air energy heat pump is confessed greater than all drying rooms in during rated temperature total value institute calorific requirement, signal receives the total activation end and sends signal by the signal output module that receives in the temperature regulation controller, and air energy heat pump is switched to holding state; When heat that air energy heat pump is confessed less than drying room in during rated temperature total value institute calorific requirement, signal receives the total activation end and sends signal by the signal output module that receives in the temperature regulation controller, to air energy heat pump switchover operation state.
Among the present invention, the temperature automatically controlled method of air energy thermal cycle preserved fruit drying unit mainly adopts following principle: the autocontrol method of air energy thermal cycle preserved fruit drying unit is by the temperature required preset value of input drying room in the temperature touch-screen, make signal can transfer to console, and feed back in the signal reception total activation end, make air energy heat pump to carry out heat output according to preset value; Variations in temperature in drying room is regulated and control module according to the temperature preset value in addition, exchanges thermal switch gradually and opens or close, thereby reach the purpose of regulating each drying room temperature automatically.
Among the present invention, temperature detection device in the described temperature regulation controller, temperature touch-screen, regulation and control module and signal output module, all adopt lead to interconnect, said apparatus or module, all can design by existing computer, thereby realize that the temperature detection device is to the drying room temperature detection, the temperature touch-screen shows the drying room temperature and presets, and the regulation and control module is according to the preset temperature in the temperature touch-screen, the size of exchanging the thermal switch opening automatically adjusts, and output module can export signal and delta data in the console to.
Console described in the present invention, comprise that signal receives total activation end and signal actuating station, it is an intelligent computer system that signal receives the total activation end, can be by the default rated temperature of temperature regulation controller, calculate the defeated thermal power of air energy heat pump, and signal actuating station is an electronic original part, is mainly used in the power output of control air source heat pump.In addition, console can also cooperate temperature regulation controller to add some basic timing elements, to realize greater functionality.
This outstanding substantive distinguishing features and marked improvement are:
1. the present invention cooperates a plurality of drying rooms to adopt the hot siphunculus of polyphone to join thermal process, realize the function that single thermal source toasts simultaneously to the many kinds of many drying rooms, compare with traditional single line mango stoving process that to have a production cost low, the openings of sizes that cooperates temperature regulation controller to exchange thermal switch is simultaneously regulated, and makes same thermal source can toast the different cultivars preserved fruit.
2. the present invention adopts temperature regulation controller in conjunction with the console technology, realizes the prediction to air energy heat pump power, thereby reaches energy efficient, the effect of whole-process automatic control equipment.
3. the present invention develops the logical hot hole technology of porous network formula, supporting employing thermal cycle is reclaimed technology heat is reclaimed cycling and reutilization, make heat can be evenly distributed in the drying room, and form the thermal air current that to reflux, compare with monotrysian type stringing exhaust air technique, has the oven dry of mango dried meat evenly, good refreshing effect, and advantage of low energy consumption.
Description of drawings
Fig. 1 is the structural representation of air energy thermal cycle preserved fruit drying unit among the present invention;
Fig. 2 is the topological schematic diagram of temperature regulation controller and console among the present invention;
Parts title and sequence number among the figure:
Air energy heat pump 1, dehumidifier 2, drying room 3, total heat siphunculus 4, the hot siphunculus 5 of branch, total product heat cal rod 6, branch product heat cal rod 7, accent thermal switch 8, temperature regulation controller 9, console 10, logical hot hole 11, air exhauster 12
Drying room skin 3.1, drying room internal layer 3.2, cavity 3.3.
The specific embodiment
Describing air of the present invention below in conjunction with drawings and Examples can thermal cycle preserved fruit drying unit and temperature automatically controlled method thereof.
Embodiment 1:
Shown in Fig. 1-2, be structural representation of the present invention, this air energy thermal cycle preserved fruit drying unit, comprise an air energy heat pump 1, a dehumidifier 2 and three drying rooms 3, air energy heat pump 1 end is provided with total heat siphunculus 4, it connects the hot siphunculus 5 of branch of three series connection, article three, the hot siphunculus 5 of the branch of series connection all is connected to pairing drying room 3 separately, drying room 3 is divided into two-layer, comprise drying room outer 3.1 and drying room internal layer 3.2, wherein, form cavity 3.3 between drying room outer 3.1 and the drying room internal layer 3.2, divide outer 3.1 of hot siphunculus 5 and drying room to be connected, and drying room internal layer 3.2 bottoms are provided with a plurality of logical hot holes 11.At drying room 3 tops, road 7 stretches into drying room internal layer 3.2, and is connected with total product heat cal rod 6 after 7 series connection of final three branch product heat cal rods, and total product heat cal rod 6 is connected with dehumidifier 2, and dehumidifier 2 is connected with air energy heat pump 1 by hot siphunculus.Wherein, be provided with air exhauster 12 in total product heat cal rod 6.
Side locations at each drying room 3 is provided with temperature regulation controller 9, temperature regulation controller 9 comprises the temperature detection device, the temperature touch-screen, regulation and control module and signal output module, wherein, the temperature detection device stretches in the drying room internal layer 3.2, the housing of temperature regulation controller 9 is installed in drying room 3 external positions, the temperature touch-screen is installed in housing can demonstration place, the regulation and control module is connected by lead or circuit board with signal output module and is arranged on enclosure interior, wherein, divide hot siphunculus 5 to go out the position at each and also be provided with accent thermal switch 8, regulation and control module in the temperature regulation controller 9 is connected with transferring thermal switch 8, can be by the switch and the openings of sizes of electrical part control accent thermal switch 8, transferring thermal switch 8 can be common draught damper or gas-tight valve.
Also be provided with console 10 at air energy heat pump 1 sidepiece, comprise in the console 10 that signal receives total activation end and signal actuating station, signal receives the total activation end and is connected with signal output module in the temperature regulation controller 9 by lead.It is an intelligent computer system that signal receives the total activation end, can calculate the defeated thermal power of air energy heat pump, and signal actuating station be an electronic original part by the default rated temperature of temperature regulation controller, is mainly used in the power output of control air source heat pump.
When needing many preserved fruits to dry, open three drying rooms 3, dissimilar preserved fruits is sent into drying room, for example: what first drying room 3 was put into is mango, what second drying room 3 was put into is red date, and what the 3rd drying room 3 was put into is blueberry, is 70 degree by the rated temperature in default first drying room 3 of temperature touch-screen then, second drying room, 3 rated temperatures are 80 degree, and the 3rd drying room 3 rated temperatures are 90 degree.Above-described default rated temperature, be presented on the temperature touch-screen, and the signal that is sent in the console by signal output module receives the total activation end, signal receives the total activation end according to drying room 3 volume sizes and the temperature required total amount of drying room, calculate air energy heat pump 1 power output size 4KW, subsequently signal is delivered to signal actuating station and sends fill order, wait to start air energy heat pump 1 after, air energy heat pump 1 is with default power 4KW quantity of heat given up.Heat divides hot siphunculus 5 to enter into drying room 3 by total heat siphunculus 4 and each, air is through after the heat exchange, form the damp-heat air of high temperature low humidity, be recovered into through total product heat cal rod 6 by minute product heat cal rod 7 subsequently and carry out desiccant dehumidification in the dehumidifier 2, the air that forms the high temperature low humidity subsequently sends back and carries out little heating in the air energy heat pump 1, this moment along with in the drying room 3 temperature raise, when reaching drying room 3 preset temperatures gradually, the temperature detection device sends signal to the regulation and control module, control transfers thermal switch 8 to reduce opening, simultaneously, the temperature detection device receives the total activation end to signal and sends temperature signal, and signal receives the total activation end by behind the rated output, reduces the power output of air energy heat pump 1, and signal is delivered to signal actuating station carries out power adjustment commands, make air energy heat pump 1 reduce power output or carry out standby; When drying room 3 temperature are not enough, adopt above-mentioned same principle, make air energy heat pump 1 increase input power, to guarantee temperature constant temperature in the drying room 3.Wherein, during operation, can control air exhauster 12 to regulate the circulation rate of heat, to satisfy the needs of 3 pairs of preserved fruit bakings of different drying rooms.
In the present embodiment, be equipped with check valve on total heat siphunculus 4, the hot siphunculus 5 of branch, total product heat cal rod 6 and the branch product heat cal rod 7, to guarantee heat flow direction unanimity.
Embodiment 2:
Difference from Example 1 is that described drying room 3 one has 8, and all the other operation principles are identical with embodiment 1.
Among the present invention, original paper that is adopted or system all design or simply process by the solution of the present invention, have practicality, and in addition, related art scheme among simple replacement the present invention of employing same principle all falls into the invention protection domain.
Claims (8)
1. an air can thermal cycle preserved fruit drying unit, comprise air energy heat pump (1), dehumidifier (2), drying room (3) and heat are threaded a pipe, described air energy heat pump (1), drying room (3) is threaded a pipe successively with dehumidifier (2) by heat, and circulation is connected, it is characterized in that: described air energy heat pump (1) is connected with a total heat siphunculus (4), total heat siphunculus (4) is connected with a plurality of drying rooms (3) by the hot siphunculus of branch (5) of many series connection, drying room (3) top is provided with branch backheat pipeline (7), branch backheat pipeline (5) series connection back on a plurality of drying rooms (3) is connected with total backheat pipeline (7), and total backheat pipeline (4) is connected with dehumidifier (2); Be equipped with in described each minute hot siphunculus and transfer thermal switch (8), also be provided with air exhauster (12) on described total backheat pipeline.
2. air energy thermal cycle preserved fruit drying unit according to claim 1, it is characterized in that: also be provided with temperature regulation controller (9) in each drying room, described thermoregulator (9) comprises temperature detection device, temperature touch-screen, regulation and control module and signal output module, the temperature detection device is arranged on the drying room interior location, temperature touch-screen, regulation and control module and signal output module are arranged in the outer control box of drying room (3), and the thermoregulator (9) in each drying room (3) connects and controls its corresponding accent thermal switch (8) that divides in hot siphunculus (5).
3. air energy thermal cycle preserved fruit drying unit according to claim 1 and 2, it is characterized in that: described air energy heat pump (1) is connected with console (10), described console (10) comprises that signal receives total activation end and signal actuating station, and console (10) is connected with temperature regulation controller (9) in each drying room (3) by lead.
4. air energy thermal cycle preserved fruit drying unit according to claim 3, it is characterized in that: described drying room (3) is divided into drying room skin (3.1) and drying room internal layer (3.2), form cavity (3.3) between drying room skin (3.1) and the drying room internal layer (3.2), the hot siphunculus of described branch (5) is connected with drying room skin (3.1), and drying room (3) bottom is provided with logical hot hole (11).
5. air according to claim 3 can thermal cycle preserved fruit drying unit, it is characterized in that: described total heat siphunculus (4), divide on hot siphunculus (5), total product heat cal rod (6) and the branch product heat cal rod (7) and be equipped with check valve.
6. according to the described air energy of claim 4-5 thermal cycle preserved fruit drying unit, it is characterized in that: the drying room that hot siphunculus is connected (3) is 1-8.
7. according to the temperature automatically controlled method of each described air energy thermal cycle preserved fruit drying unit of claim 1-6, it is characterized in that: comprise step:
1. temperature in the default drying room: by the thermoregulator (9) in the drying room (3) being set, the rated temperature in the default drying room (3);
2. default air energy heat pump (1) rated power: the signal that sends to console by the signal output module in the thermoregulator (9) in each drying room (3), signal in the console (10) receives the total activation end and calculates required drying room (3) institute calorific requirement total amount, send fill order to signal actuating station, signal actuating station control air energy heat pump (1) carries out the output of rated power;
3. drying room (3) temperature is carried out constant adjusting: after air energy heat pump starts (1), temperature regulation controller (9) is according to the interior temperature level of drying room (3), exchange the big or small degree of thermal switch (8) unlatching and regulate, with the constant size of the interior temperature of control drying room (3).
8. the temperature automatically controlled method of air energy thermal cycle preserved fruit drying unit according to claim 7, it is characterized in that: in the described step, also comprise air energy heat pump (1) automatic stand-by regulating step: when heat that air energy heat pump is confessed greater than all drying rooms (3) in during rated temperature total value institute calorific requirement, signal receives the total activation end and sends signal by the signal output module that receives in the temperature regulation controller (9), and air energy heat pump (1) is switched to holding state; When heat that air energy heat pump (1) is confessed less than drying room (3) in during rated temperature total value institute calorific requirement, signal receives the total activation end and sends signal by the signal output module that receives in the temperature regulation controller (9), to air energy heat pump (1) switchover operation state.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106720825A (en) * | 2016-12-22 | 2017-05-31 | 青岛祥智电子技术有限公司 | A kind of air energy heat cycle preserved fruit drying apparatus |
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| CN2729605Y (en) * | 2004-09-16 | 2005-09-28 | 无锡亚玛登干燥设备有限公司 | Tin printing/coating iron oasthouse |
| CN202547322U (en) * | 2011-12-30 | 2012-11-21 | 成都东和工业有限责任公司 | Centralized heating drying device for air source heat pump |
| CN202547288U (en) * | 2012-04-12 | 2012-11-21 | 浏阳市金和机械设备制造有限公司 | Drying device |
| CN103005115A (en) * | 2012-12-24 | 2013-04-03 | 黄宇 | Air-source heat circulation drying and recycling device, and automatic temperature control method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106720825A (en) * | 2016-12-22 | 2017-05-31 | 青岛祥智电子技术有限公司 | A kind of air energy heat cycle preserved fruit drying apparatus |
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| CN103211002B (en) | 2015-05-06 |
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