CN101216245A - Heat pump drier - Google Patents
Heat pump drier Download PDFInfo
- Publication number
- CN101216245A CN101216245A CNA2007100605466A CN200710060546A CN101216245A CN 101216245 A CN101216245 A CN 101216245A CN A2007100605466 A CNA2007100605466 A CN A2007100605466A CN 200710060546 A CN200710060546 A CN 200710060546A CN 101216245 A CN101216245 A CN 101216245A
- Authority
- CN
- China
- Prior art keywords
- air
- working medium
- gas cooler
- air source
- outlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Drying Of Solid Materials (AREA)
Abstract
The invention discloses a heat pump drying machine with high-efficient and environmentally friendly CO2 as the working fluid. The high-pressure side of a compressor is connected with the working fluid sides of two air source-based gas coolers in series and then connected with an inner heat exchanger, and the high-pressure working fluid side of the inner heat exchanger is connected with the low-pressure working fluid side of the inner heat exchanger via an electronic expansion valve and an evaporator and then connected with the low-pressure side of the compressor, so as to form a working fluid circulating system. The air side of the evaporator is connected with the second air source-based gas cooler in series and then connected with the inlet of a first drying room, the outlet of the first drying room is connected with the first air source-based gas cooler in series and then connected with the inlet of a second drying room, the outlet of the second drying room is connected with an external heat exchanger in series and then connected with the air side inlet of the evaporator, so as to form an air circulating system. The invention takes advantage of the heat exchange characteristics of the heap pump with CO2 as the working fluid with two-stage drying design, and reduces the temperature of the working fluid at the outlet of the gas cooler, so as to reasonably utilize energy, perform continuous drying and shorten drying time.
Description
Technical field
The invention belongs to drying equipment, be specifically related to a kind of heat pump mode that adopts and carry out dry device.
Background technology
The heat-pump-type drying equipment have sealing, clean, primary energy ratio is high, heat supply temperature is high, be easy to realize characteristics such as capacity regulating and developed rapidly.But the application of at present relevant heat pump drier system all is conventional working medium.The working medium that the refrigerating heat pump industry is generally used is CFCs (CFC) and HCFCs (HCFC) material.Because they have destruction and produce greenhouse effects ozone layer, the scientist of countries in the world is studying its alternative work emphatically.Wherein carbon dioxide is reintroduced to the refrigerating heat pump industry with its good environmental protection characteristic, good heat transfer and flowing property, at present natural refrigerant CO
2Be described as one of the most potential alternative working medium.This programme is according to natural refrigerant CO
2The characteristics of heat pump, design CO
2Heat pump two-stage drier also can be applicable to the R410A working substance system simultaneously, improves the efficient of system when satisfying system requirements.
Summary of the invention
The purpose of this invention is to provide a kind of is the heat pump drier of cycle fluid with carbon dioxide and R410A.
Describe below in conjunction with 1 pair of system flow of the present invention of accompanying drawing.The present invention includes compressor 1, air source gas cooler 2, inner heat exchanger 3, electric expansion valve 4, evaporimeter 5, external heat exchanger 6, hothouse 7, conveyer belt 8 and motor 9 etc.The cycle fluid of heat pump drier is a carbon dioxide, also can adopt R410A.Cycle fluid R410A is by difluoromethane (HFC-32, molecular formula CH
2F
2) and pentafluoroethane (HFC-125, molecular formula CHF
2CF
3) form, the mass percent of HFC-32/HFC-125 is 50/50%.The connectivity scenario that system is concrete: compressor 1 high-pressure side is connected to the import of first air source gas cooler 2-1 working medium side, the outlet of air source gas cooler 2-1 working medium side is connected to the import of second air source gas cooler 2-2 working medium side, the outlet of air source gas cooler 2-2 working medium side is connected to the high-pressure working medium side-entrance of internal exchanger 3, the outlet of internal exchanger 3 high-pressure working medium sides is connected to evaporimeter 5 working medium side through electric expansion valve 4, evaporimeter 5 working medium side and the low-pressure end that is connected to compressor 1 after the low pressure working fluid side of internal exchanger 3 is connected in series constitute duplex matter system.Evaporimeter 5 air side outlets and the import that is connected to first order hothouse 7-1 after second air source gas cooler 2-2 air side is connected in series, the outlet of first order hothouse 7-1 and the import that is connected to second level hothouse 7-2 after first air source gas cooler 2-1 air side is connected in series, the outlet of second level hothouse 7-2 be connected to described evaporimeter 5 air side imports after external heat exchanger 6 air side are connected in series, constitute air circulation system.Separate with soft curtain between first order hothouse 7-1 and the second level hothouse 7-2.Two hothouses are provided with same conveyer belt 8, and conveyer belt 8 is driven by motor 9.
After compressor 1 is opened, the compressed machine 1 of working medium is compressed into HTHP working medium and enters air source gas cooler 2-1 and add hot-air, entering air source gas cooler 2-2 after the heat exchange more further lowers the temperature, fall heat back working medium and enter internal exchanger 3 and the heat exchange of low-temp low-pressure working medium, cooled working medium enters electric expansion valve 4 throttling step-downs, the working medium of low-temp low-pressure enters evaporimeter 5 and carries out evaporation and heat-exchange, low-temp low-pressure working medium enters internal exchanger 3 by overheated, overheated low-temp low-pressure working medium enters compressor 1 compression, finishes a circulation.
In the time of the operation of carbon dioxide working medium, air enters evaporimeter 5 cool-down dehumidifications, enter air source gas cooler 2-2 and carry out the heat temperature raising first time, enter hothouse 7-1 and carry out hygroscopic desiccation, enter air source gas cooler 2-1 subsequently and carry out the heat temperature raising second time, hothouse 7-2 carries out hygroscopic desiccation afterwards, enters external heat exchanger 6 after the drying and carries out heat exchange with extraneous air, enter evaporimeter 5 cool-down dehumidifications after the heat exchange again, finish a circulation.
Characteristics of the present invention are to be provided with two air source gas coolers, make working medium carry out twice cooling, and make twice heating of air, and temperature constantly raises.So design reduces the heat transfer temperature difference of heat exchanger, and heat pump drying efficient is improved.
Description of drawings
Accompanying drawing is system flow of the present invention and each parts connection diagram.
The specific embodiment
Be specific embodiment with the Chinese cabbage seed drying below, content of the present invention be further described:
The material Chinese cabbage seed that is dried places on the interior conveyer belt of hothouse, and the initial water content of Chinese cabbage seed is 30%, and drying and dehydrating to water content is 5%.
After compressor 1 is opened, CO
2The compressed machine 1 of working medium is compressed into HTHP power pressure 9MPa, enters air source gas cooler 2-1 after 75 ℃ of the temperature and carries out reducing to 45 ℃ the first time; Be that 30 ℃, humidity are that 80% air heat to 45 ℃ of temperature, humidity drops to 35%, CO simultaneously with temperature
2Entering second air source gas cooler 2-2 after working medium and the air heat exchange again and carry out reducing to 25 ℃ the second time, is that 20 ℃, humidity are that 100% air heat to 35 ℃, humidity drop to 55% simultaneously with temperature.This moment CO
2Working medium enters internal exchanger 3 and the heat exchange of low-temp low-pressure working medium, cooled CO
2Working medium enters electric expansion valve 4 throttling step-downs and reduces to 5MPa, 15 ℃ of temperature.The CO of low-temp low-pressure
2Working medium enters evaporimeter 5 and carries out evaporation and heat-exchange, enters internal exchanger 3 then by overheated, and the working medium temperature is promoted to 25 ℃.Overheated low-temp low-pressure working medium enters compressor 1 compression, finishes a circulation.In the time of the operation of carbon dioxide working medium, air enters evaporimeter 5 cool-down dehumidifications.Temperature is that 20 ℃, humidity are that 100% low temperature and high humidity air enters air source gas cooler 2-2 and carries out the heating first time, makes its temperature rise to 35 ℃, relative humidity reduce to 55%, enters hothouse 7-1 seed is carried out hygroscopic desiccation.This moment, air themperature was reduced to 30 ℃ and relative humidity increases to 80%, air enters air source gas cooler 2-1 and carries out the heat temperature raising second time subsequently, air themperature further is increased to 45 ℃ of relative humidity and is reduced to 35%, and then enters hothouse 7-2 seed is carried out hygroscopic desiccation.Dried air is that 33 ℃ of humidity are 80%, and air enters external heat exchanger 6 and carries out the heat exchange cooling with extraneous air, enters evaporimeter 5 cool-down dehumidifications after the heat exchange again, and air is reduced to 20 ℃, relative humidity 100%, finishes a circulation.Have soft curtain to separate in the middle of hothouse 7-1 and the hothouse 7-2, Chinese cabbage seed carries out drying respectively in the hothouse 7-1 of the hothouse 7-2 of high temperature and middle temperature, and the conveyer belt of driven by motor hothouse 7-1 and hothouse 7-2 slowly moves.The Chinese cabbage seed initial water content is 30%, and is dry in the 7-1 of middle temperature is dried chamber, when the Chinese cabbage seed water content reaches 12%, enters into the 7-2 of high-temperature drying chamber and continues drying, reaches 5% until water content.
Advantage of the present invention and beneficial effect are that system adopts natural refrigerant CO2Be working media, on system, Whole system high temperature heat unit branch is provided with two different air-source gas coolers of high low temperature, and also two of correspondences are high respectively The hothouse that low temperature is different is conducive to the reduction of system gas cooler outlet Temperature of Working, makes energy obtain rational profit With, reaching the purpose that improves system effectiveness, dry thing carries out drying continuously simultaneously under two temperature simultaneously, can reduce to do The dry time. The present invention has characteristics simple in structure, easy to adjust. To CO2Working medium should in the popularization of Analysis of Heat Pump Drying System With playing positive facilitation with energy-conservation.
Claims (4)
1. heat pump drier, has compressor (1), air source gas cooler (2), inner heat exchanger (3), electric expansion valve (4), evaporimeter (5), external heat exchanger (6), hothouse (7), conveyer belt (8) and motor (9), it is characterized in that compressor (1) high-pressure side is connected to the import of first air source gas cooler (2-1) working medium side, the outlet of described air source gas cooler (2-1) working medium side is connected to the import of second air source gas cooler (2-2) working medium side, the outlet of described air source gas cooler (2-2) working medium side is connected to the high-pressure working medium side-entrance of internal exchanger (3), the outlet of described internal exchanger (3) high-pressure working medium side is connected to evaporimeter (5) working medium side through electric expansion valve (4), described evaporimeter (5) working medium side and the low-pressure end that is connected to compressor (1) after the low pressure working fluid side of internal exchanger (3) is connected in series constitute duplex matter system; Described evaporimeter (5) air side outlet and the import that is connected to first order hothouse (7-1) after described second air source gas cooler (2-2) air side is connected in series, the outlet of described first order hothouse (7-1) and the import that is connected to second level hothouse (7-2) after described first air source gas cooler (2-1) air side is connected in series, the outlet of described second level hothouse (7-2) be connected to described evaporimeter (5) air side import after external heat exchanger (6) air side is connected in series, constitute air circulation system.
2. according to the described heat pump drier of claim 1, it is characterized in that separating with soft curtain between described first order hothouse (7-1) and the second level hothouse (7-2), two hothouses are provided with same conveyer belt (8), and described conveyer belt (8) is driven by motor (9).
3. according to the described heat pump drier of claim 1, it is characterized in that described heat pump cycle working medium is carbon dioxide, also can adopt the cycle fluid of R410A as described heat pump drier.
4. according to the described heat pump drier of claim 3, it is characterized in that described cycle fluid R410A is made up of difluoromethane (HFC-32) and pentafluoroethane (HFC-125), the mass percent of HFC-32/HFC-125 is 50/50%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100605466A CN101216245A (en) | 2007-12-28 | 2007-12-28 | Heat pump drier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100605466A CN101216245A (en) | 2007-12-28 | 2007-12-28 | Heat pump drier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101216245A true CN101216245A (en) | 2008-07-09 |
Family
ID=39622728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100605466A Pending CN101216245A (en) | 2007-12-28 | 2007-12-28 | Heat pump drier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101216245A (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101435651B (en) * | 2008-12-11 | 2011-04-20 | 广州东誉工业设备有限公司 | Mute energy-saving freezing type drier |
| CN102564068A (en) * | 2012-02-20 | 2012-07-11 | 蒋文峰 | High-temperature and constant-temperature dehumidifying and drying device |
| CN102718717A (en) * | 2012-06-15 | 2012-10-10 | 河北亚光精细化工有限公司 | Method for drying solid 1, 3-dihydroxytoluene-5, 5-dimethylhydantoin |
| CN103557683A (en) * | 2013-11-20 | 2014-02-05 | 四川双亿实业有限公司 | Air-source tri-generation heat pump drying unit |
| CN103727768A (en) * | 2012-10-16 | 2014-04-16 | 莫少民 | Heat accumulating type overlapping heat pump two-level back-heating dehydration roasting chamber system |
| CN105910421A (en) * | 2016-06-17 | 2016-08-31 | 上海初远环保科技有限公司 | Drying machine |
| CN107036407A (en) * | 2017-05-03 | 2017-08-11 | 苏宇贵 | Natural dehumidifying drying system |
| CN107764041A (en) * | 2017-11-20 | 2018-03-06 | 珠海格力电器股份有限公司 | heat pump dryer |
| WO2018107750A1 (en) * | 2016-12-16 | 2018-06-21 | 江苏天舒电器股份有限公司 | Control method and control device for variable-frequency and variable-capacity heat pump hot-air drying system |
| CN111780494A (en) * | 2020-05-29 | 2020-10-16 | 浙江工业大学 | Thermosensitive material closed-loop circulating adsorption dehumidification secondary drying system |
| CN112595088A (en) * | 2020-12-09 | 2021-04-02 | 黑龙江盛大科技有限公司 | Numerical control constant temperature heat pump seed drying system |
| WO2022057794A1 (en) * | 2020-09-15 | 2022-03-24 | 张勇 | Efficient multi-stage drying system |
| CN114413609A (en) * | 2021-11-12 | 2022-04-29 | 探坤能源环境科技有限公司 | Coal slime drying device and drying method |
| CN115560557A (en) * | 2022-10-08 | 2023-01-03 | 江苏博一环保科技有限公司 | Hot air drying system |
-
2007
- 2007-12-28 CN CNA2007100605466A patent/CN101216245A/en active Pending
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101435651B (en) * | 2008-12-11 | 2011-04-20 | 广州东誉工业设备有限公司 | Mute energy-saving freezing type drier |
| CN102564068A (en) * | 2012-02-20 | 2012-07-11 | 蒋文峰 | High-temperature and constant-temperature dehumidifying and drying device |
| CN102718717A (en) * | 2012-06-15 | 2012-10-10 | 河北亚光精细化工有限公司 | Method for drying solid 1, 3-dihydroxytoluene-5, 5-dimethylhydantoin |
| CN102718717B (en) * | 2012-06-15 | 2015-03-11 | 河北鑫淘源环保科技有限公司 | Method for drying solid 1, 3-dihydroxytoluene-5, 5-dimethylhydantoin |
| CN103727768A (en) * | 2012-10-16 | 2014-04-16 | 莫少民 | Heat accumulating type overlapping heat pump two-level back-heating dehydration roasting chamber system |
| CN103727768B (en) * | 2012-10-16 | 2016-05-18 | 莫少民 | A kind of heat accumulating type overlapping heat pump secondary backheat dehydration drying room system |
| CN103557683A (en) * | 2013-11-20 | 2014-02-05 | 四川双亿实业有限公司 | Air-source tri-generation heat pump drying unit |
| CN103557683B (en) * | 2013-11-20 | 2015-07-08 | 四川双亿实业有限公司 | Air-source tri-generation heat pump drying unit |
| CN105910421A (en) * | 2016-06-17 | 2016-08-31 | 上海初远环保科技有限公司 | Drying machine |
| WO2018107750A1 (en) * | 2016-12-16 | 2018-06-21 | 江苏天舒电器股份有限公司 | Control method and control device for variable-frequency and variable-capacity heat pump hot-air drying system |
| CN107036407A (en) * | 2017-05-03 | 2017-08-11 | 苏宇贵 | Natural dehumidifying drying system |
| CN107764041A (en) * | 2017-11-20 | 2018-03-06 | 珠海格力电器股份有限公司 | heat pump dryer |
| CN111780494A (en) * | 2020-05-29 | 2020-10-16 | 浙江工业大学 | Thermosensitive material closed-loop circulating adsorption dehumidification secondary drying system |
| CN111780494B (en) * | 2020-05-29 | 2022-02-15 | 浙江工业大学 | Thermosensitive material closed-loop circulating adsorption dehumidification secondary drying system |
| WO2022057794A1 (en) * | 2020-09-15 | 2022-03-24 | 张勇 | Efficient multi-stage drying system |
| CN112595088A (en) * | 2020-12-09 | 2021-04-02 | 黑龙江盛大科技有限公司 | Numerical control constant temperature heat pump seed drying system |
| CN114413609A (en) * | 2021-11-12 | 2022-04-29 | 探坤能源环境科技有限公司 | Coal slime drying device and drying method |
| CN115560557A (en) * | 2022-10-08 | 2023-01-03 | 江苏博一环保科技有限公司 | Hot air drying system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101216245A (en) | Heat pump drier | |
| CN203949468U (en) | Dehumidifying drying heating tape hydrofuge source pump | |
| CN103759449B (en) | The two-stage steam compression type circulatory system of dual jet synergy | |
| CN103940156A (en) | Cascade heat pump drying system and control method thereof | |
| CN205048939U (en) | Dehumidifying heat pump drying unit | |
| CN105300079B (en) | A kind of dehumidification device with vortex tube | |
| CN101691960A (en) | Three-pipe heating and reclaiming air-conditioning system | |
| CN105466059A (en) | Transcritical heat pump device | |
| CN203443291U (en) | Integrated high-temperature heat pump drying unit for recovering waste heat of air source | |
| CN208454788U (en) | A kind of low temperature drying equipment handling sludge | |
| CN104501566A (en) | Air source heat pump drying machine fully recycling exhaust waste heat | |
| CN204104799U (en) | With the air energy high-temperature dehumidification heat pump tobacco leaf drying system of heat sink | |
| CN201858724U (en) | Brand-new air heating pump type roof air conditioner | |
| CN109163470B (en) | Ultralow-temperature carbon dioxide cold and hot water unit | |
| CN110736262A (en) | injection supercharging two-stage supercooling transcritical CO2Dual temperature system and application | |
| CN205261964U (en) | Critical heat pump device strides | |
| CN110701810A (en) | Injection supercharging two-stage series connection supercooling double-temperature-zone refrigerating system and application | |
| CN201964701U (en) | Air conditioning system | |
| CN103925657A (en) | Fresh air system driven by exhaust air source heat pump | |
| CN203949470U (en) | Dehumidifying drying heat hot pump assembly | |
| CN211204842U (en) | High-temperature agricultural product drying equipment based on supercritical carbon dioxide energy storage | |
| CN208012139U (en) | A kind of cascade refrigeration system for making refrigerant using single working medium CO2 | |
| CN201072287Y (en) | Heat pump drier with heat regenerator | |
| CN201964610U (en) | Air source and water source heat pump hot water unit | |
| CN201866980U (en) | Auto-cascade low-temperature refrigerating device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |