CN202407018U - Recycling system for waste heat of vacuum freeze-drying equipment - Google Patents
Recycling system for waste heat of vacuum freeze-drying equipment Download PDFInfo
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- CN202407018U CN202407018U CN2012200289323U CN201220028932U CN202407018U CN 202407018 U CN202407018 U CN 202407018U CN 2012200289323 U CN2012200289323 U CN 2012200289323U CN 201220028932 U CN201220028932 U CN 201220028932U CN 202407018 U CN202407018 U CN 202407018U
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- vacuum freeze
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/52—Heat recovery pumps, i.e. heat pump based systems or units able to transfer the thermal energy from one area of the premises or part of the facilities to a different one, improving the overall efficiency
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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 utility model provides a recycling system for waste heat of vacuum freeze-drying equipment. The recycling system is capable of recycling heat dissipated by condensers of refrigerating systems and comprises refrigerating system condensers, a first heating pump, second heating pumps and an intermediate container. The refrigerating system condensers are used for heating medium inside a brine tank. An evaporator of the first heating pump is subject to heat exchange with the medium inside the brine tank, and a condenser of the first heating pump is subject to heat exchange with the medium inside the intermediate container. An evaporator of each second heating pump is subject to heat exchange with the medium inside the intermediate container, and a condenser of the second heating pump is used for heating water required by a heating plate. The intermediate container is further provided with an auxiliary heating device. The amount of the second heating pumps is configured according to different temperatures required by a production line in different drying stages, and the second heating pumps are disposed in parallel.
Description
Technical field
The utility model relates to a kind of vacuum freeze, is specifically related to a kind of vacuum freeze refrigeration system condenser heat radiation recycling system.
Background technology
Vacuum freeze drying is with food product refrigeration, makes its water that contains become ice cube, under vacuum, makes then to ice distillation and reach drying purpose.Keep constantly carrying out of lyophilization, must satisfy two primary conditions, be i.e. the continuous eliminating of continuous supply of heat and generation steam.Existing vacuum freeze adopts the radiation heating mode basically, supplies with heat by the heating plate radiation, heats heating plate with hot water, and hot water is to produce through vapour-water heat exchange or electrical heating.The process of supplying with heat is a diabatic process, and the process of getting rid of steam is the process of a mass transfer, and distillation steam is caught the back by the evaporator condensation of refrigeration system by steam trap (cold-trap), and dispels the heat in atmosphere through the refrigeration system condenser.For refrigeration system, because the atmospheric temperature of Various Seasonal is different, especially summer, atmospheric temperature was high, and the coefficient of refrigerating performance of refrigeration system declines to a great extent, and performance driving economy declines to a great extent, and power consumption is big.Against vacuum freeze drying equipment integral body is lost to a large amount of heats in the atmosphere when supplying with heat, and heat fails fully rationally to utilize.
Summary of the invention
The technical problem that the utility model will solve provides a kind of vacuum freeze heat recovery system that can refrigeration system condenser heat radiation be recycled.
In order to solve the problems of the technologies described above, the technical scheme of the utility model is:
A kind of vacuum freeze heat recovery system comprises
The refrigeration system condenser, heating saline working medium;
Working medium heat exchange in the working medium heat exchange in first heat pump, its evaporimeter and saline, its condenser and intermediate receptacle;
Working medium heat exchange in second heat pump, its evaporimeter and intermediate receptacle, condenser heating heating plate needs hot water;
Intermediate receptacle also is provided with assisted heating device.
The quantity of second heat pump is according to required different temperatures coupling of different dry periods of production line, and second heat pump parallel connection is each other arranged.
Above-mentioned vacuum freeze heat recovery system, said assisted heating device is an air source heat pump.
Above-mentioned vacuum freeze heat recovery system, said assisted heating device is a solar thermal collection system, working medium and the heat exchange of intermediate receptacle working medium among its thermal storage water tank.
For assisted heating device is the vacuum freeze heat recovery system of solar thermal collection system, and said intermediate receptacle also is provided with the air source heat pump assisted heating device.
The heat radiation of refrigeration system condenser is through the required hot water of heat recovery system heating heating plate, and against vacuum freeze drying equipment integral body has constituted the energy circulation system.The utility model has not only been recycled the heat radiation of refrigeration system condenser, and also the ambient stable with the refrigeration system condenser remains on a relatively low temperature, and the Energy Efficiency Ratio of refrigeration system increases, and performance driving economy is good, and power consumption reduces.The heat overwhelming majority of the required hot water of heating plate comes from the heat radiation of refrigeration system condenser, has avoided the consumption of steam and electricity (electrical heating), has reduced operating cost, energy-saving and emission-reduction.The whole heat loss of vacuum freeze is replenished through assisted heating device.
Description of drawings
Below in conjunction with accompanying drawing the specific embodiment of the utility model is done further detailed explanation:
Fig. 1 is the schematic diagram of the utility model.
Among the figure: 1 refrigeration system condenser, 2 saline, 3 ice hockeys, 4 first heat pumps, 5 intermediate receptacles, 6 second heat pumps, 7 air source heat pumps, 8 thermal storage water tanks, 9 solar thermal collectors.
The specific embodiment
Fig. 1 shows vacuum freeze heat recovery systematic schematic diagram, and the heat recovery system comprises:
Accommodate the saline 2 of refrigeration system (refrigeration system can comprise cold-trap and freezer) condenser 1, the heat radiation of absorbent refrigeration system condenser.
First heat pump 4 that heat is transmitted to intermediate receptacle 5 (high temperature heat source) from saline 2 (low-temperature heat source); A kind of concrete structure is: the feedwater of the first evaporator with heat pump hot fluid is from saline; Backwater passes back in the saline again after the heat exchange; The feedwater of the first heat pump condenser cold fluid is from intermediate receptacle, and backwater passes back in the intermediate receptacle again after the heat exchange.
Heat is needed second heat pump 6 of hot water (high temperature heat source) transmission to heating plate from middle container 5 (low-temperature heat source); The quantity of second heat pump 6 is according to required different temperatures coupling of different dry periods of production line; Many production lines dry period of should staggering carries out; Second heat pump 6 parallel connection is each other arranged, so that the temperature requirement that satisfies the different dry periods to be provided.Concrete structure is: the feedwater of the second evaporator with heat pump hot fluid is from intermediate receptacle, and backwater passes back into again in the intermediate receptacle after the heat exchange, and the feedwater of the second heat pump condenser cold fluid is from the heating plate hot water backwater, and backwater is the feedwater of heating plate hot water after the heat exchange.
Against vacuum freeze drying equipment integral body, by radiation loss, assisted heating device is in good time to the intermediate receptacle assistant heating.
First kind of assisted heating device can be solar thermal collection system, and solar thermal collection system comprises solar thermal collector 9 and thermal storage water tank 8, working medium heat exchange in working medium and the intermediate receptacle 5 among the thermal storage water tank 8.
Second kind of assisted heating device can be air source heat pump 7, and a kind of concrete structure is: the feedwater of air source heat pump condenser cold fluid is from intermediate receptacle 5, and backwater passes back into again in the intermediate receptacle 5 after the heat exchange.Another kind of concrete structure is: the condenser of air source heat pump places intermediate receptacle 5.
The third assisted heating device can also be air source heat pump and solar thermal collection system, and concrete structure is the same.
The heat radiation of refrigeration system condenser is through the required hot water of heat recovery system heating heating plate, and against vacuum freeze drying equipment integral body has constituted the energy circulation system.The utility model has not only been recycled the heat radiation of refrigeration system condenser, and also the ambient stable with the refrigeration system condenser remains on a relatively low temperature, and the Energy Efficiency Ratio of refrigeration system increases, and performance driving economy is good, and power consumption reduces.The heat overwhelming majority of the required hot water of heating plate comes from the heat radiation of refrigeration system condenser, has avoided the consumption of steam and electricity (electrical heating), has reduced operating cost, energy-saving and emission-reduction.The whole heat loss of vacuum freeze is replenished through assisted heating device.
A kind of vacuum freeze heat recovery method based on above-mentioned heat recovery system; Salt solution in the saline 2 is given in 1 heat radiation of refrigeration system condenser; First heat pump 4 heat-obtaining and heat salt solution the intermediate receptacle 5 in saline; Second heat pump 6 heat-obtaining and heat heating plate and need hot water in the middle container, assisted heating device is given the intermediate receptacle assistant heating.
Particularly; Water temperature is controlled at 8 ℃～10 ℃ in the saline 2; The working medium temperature is controlled at 40 ℃～50 ℃ in the intermediate receptacle 5; Heating plate needs the hot water water temperature to select in 50 ℃～90 ℃ scopes according to technological requirement, and when the working medium temperature was lower than 40 ℃ in the middle container 5, assisted heating device was given the intermediate receptacle assistant heating.Said assisted heating device is that air source heat pump is or/and solar thermal collection system.
The utility model heats the required hot water of heating plate with the heat radiation of refrigeration system condenser, against vacuum freeze drying equipment integral body, and radiation loss remedies through assisted heating device, has constituted stable energy circulation system.The ambient stable of refrigeration system condenser remains on 8 ℃～10 ℃, and the Energy Efficiency Ratio of refrigeration system increases, and performance driving economy is good, and power consumption reduces.The heat overwhelming majority of the required hot water of heating plate comes from the heat radiation of refrigeration system condenser, has avoided the consumption of steam and electricity (electrical heating), has reduced operating cost, energy-saving and emission-reduction.
A kind of vacuum freeze heat recovery method based on above-mentioned heat recovery system,
In the low power consumption period; Salt solution in the saline 2 is given in refrigeration system condenser 1 heat radiation, and first heat pump 4 heat-obtaining in the saline finally makes the saline ice-reserving; Working medium in the first heat pump intermediate receptacle 5; Second heat pump 6 heat-obtaining and heat heating plate and need hot water in the middle container, the working medium temperature is controlled at 40 ℃～50 ℃ in the intermediate receptacle, and heating plate needs the hot water water temperature to select in 50 ℃～90 ℃ scopes according to technological requirement.
In the low power consumption period initial period later; Inactive first heat pump; Refrigeration system condenser heat radiation ice-melt, assisted heating device heating intermediate receptacle, second heat pump heat-obtaining and heat heating plate and need hot water in the middle container; The working medium temperature control is at 40 ℃～50 ℃ in the intermediate receptacle, and heating plate needs the hot water water temperature to select in 50 ℃～90 ℃ scopes according to technological requirement;
When the saline water temperature is higher than 10 ℃, launch first heat pump, the refrigeration system condenser dispels the heat to salt solution in the saline, first heat pump heat-obtaining and heat working medium the intermediate receptacle in saline, second heat pump heat-obtaining and heat heating plate and need hot water in the middle container,
Water temperature is controlled at 8 ℃～10 ℃ in the saline; The working medium temperature is controlled at 40 ℃～50 ℃ in the intermediate receptacle; Heating plate needs the hot water water temperature to select in 50 ℃～90 ℃ scopes according to technological requirement, and when the working medium temperature was lower than 40 ℃ in the middle container, assisted heating device was given the intermediate receptacle assistant heating.
Said assisted heating device is that air source heat pump is or/and solar thermal collection system.
Consider the requirement of saline ice-reserving, be furnished with ice hockey in the saline.
A kind of vacuum freeze heat recovery method of the heat recovery system based on above-mentioned the third assisted heating device,
In the low power consumption period; Salt solution in the saline is given in refrigeration system condenser 1 heat radiation, and first heat pump 4 heat-obtainings in the saline 2 finally make the saline ice-reserving; Working medium in first heat pump, the 4 heating intermediate receptacles 5; Heat in the intermediate receptacle 5 is stored in unnecessary heat among the thermal storage water tank 8 under the prerequisite that satisfies the second heat pump heat-obtaining
The working medium temperature is controlled at 40 ℃～50 ℃ in the intermediate receptacle, and heating plate needs the hot water water temperature to select in 50 ℃～90 ℃ scopes according to technological requirement,
In the low power consumption period initial period later; First heat pump of stopping using, refrigeration system condenser heat radiation ice-melt, second heat pump heat-obtaining and heat heating plate and need hot water in the middle container; The temperature control of working medium temperature is at 40 ℃～50 ℃ in the intermediate receptacle; When the working medium temperature is lower than 40 ℃ in the middle container, through thermal storage water tank's concurrent heating, under the situation of thermal storage water tank to middle container concurrent heating deficiency; Air source heat pump assistant heating, heating plate need the hot water water temperature to select in 50 ℃～90 ℃ scopes according to technological requirement;
Owing to when the saline water temperature is higher, run counter to the original intention that makes the environment temperature of refrigeration system condenser maintain lower temperature, the Energy Efficiency Ratio that does not also just reach refrigeration system increases, and performance driving economy is good, the purpose that power consumption reduces.Therefore, when the saline water temperature is higher than 10 ℃, launch first heat pump; The refrigeration system condenser dispels the heat to salt solution in the saline; First heat pump heat-obtaining and heat working medium the intermediate receptacle in saline, second heat pump heat-obtaining and heat heating plate and need hot water in the middle container
Water temperature is controlled at 8 ℃～10 ℃ in the saline; The working medium temperature is controlled at 40 ℃～50 ℃ in the intermediate receptacle; When the working medium temperature is lower than 40 ℃ in the middle container, through thermal storage water tank's concurrent heating, under the situation of thermal storage water tank to middle container concurrent heating deficiency; Air source heat pump assistant heating, heating plate need the hot water water temperature to select in 50 ℃～90 ℃ scopes according to technological requirement.
To this kind heat recovery method, be more specifically:
To the 7:00 period, the heat radiation of refrigeration system condenser is as system heating source at 0:00, and loses heat is replenished through the temperature that drags down saline.Because be in low power consumption this moment, the electricity charge are cheap, and the temperature of saline can be pulled to about-8 ℃ by first heat pump carries out ice-reserving.Except that the replenish lost heat, the heat that has more can heat the thermal storage water tank from the saline heat-obtaining.After the 7:00, first heat pump quits work, and the condenser heat radiation is used for ice-melt.The heating heat provides heat from the heat exchange of thermal storage water tank and intermediate receptacle by solar thermal collector.When owing to weather reason shortage of heat, short heat is provided by air source heat pump.
In a word, the heat of system's needs equals the heat and the assistant heating heat sum of waste heat recovery.The Energy Efficiency Ratio of waste heat recovery is 1:4, has reached purpose of energy saving.The heat of loss is replenished by solar energy, when the solar energy heat production is not enough, is replenished by air source heat pump, and its Energy Efficiency Ratio did not coexist between 1:2-1:4 according to season, and energy-saving effect is remarkable.As for the ice-reserving at night, be actually and carried out waste heat recovery in advance, utilize the time-of-use tariffs price difference, reach the purpose of reduction expense.First heat pump has been optimized the condition of work of condenser in recovery waste heat, reached the power-saving running of refrigeration system.
The effect of following analyzing examples explanation heat recovery:
The dry manufacturing enterprise of certain FD has the production line of 200 square metres/bar of six drying areas, once packs into and freeze 2.66 tons of article in every storehouse, and dry back product weighs 0.2 ton.Two one group of production line, cold-trap compressor refrigerating capacity 243KW, power of motor 200KW, per hour about 150 degree of operation power consumption.One of 4 tons of coal-burning boiler consumes 6～7 tons in coal every day, produces steam and delivers to that the workshop is used for sterilization, heat hot water is used for drying and cold-trap ice-melt.Period of staggering between every group is produced 24 hours one-periods.
Through transforming; First heat pump of two heating capacity 259KW, power 62KW is installed in the saline; Intermediate receptacle is installed second heat pump of three heating capacity 259kw, is that the heating plate of 50 ℃, 70 ℃ and 90 ℃ needs hot water to produce water temperature respectively, supplies the different dry periods of production line to use.In addition, solar thermal collection system and air source heat pump have been installed and have been used for replenishing radiation loss.After the transformation, the cold-trap compressor current drops to 200A by 300A, and boiler is stopped using.The boiler air blast, to draw the electric weight that phoenix, feedwater and compressor practice thrift fair with the heat pump power consumption.Sterilization changes disinfection by ultraviolet light into.Economize on coal 1800 tons every year, savings 1,440,000 can be recouped capital outlay in 2 years.
Claims (4)
1. a vacuum freeze heat recovery system is characterized in that: comprise
The refrigeration system condenser, heating saline working medium;
Working medium heat exchange in the working medium heat exchange in first heat pump, its evaporimeter and saline, its condenser and intermediate receptacle;
Working medium heat exchange in second heat pump, its evaporimeter and intermediate receptacle, condenser heating heating plate needs hot water;
Intermediate receptacle also is provided with assisted heating device;
The quantity of second heat pump is according to required different temperatures coupling of different dry periods of production line, and second heat pump parallel connection is each other arranged.
2. vacuum freeze heat recovery according to claim 1 system, it is characterized in that: said assisted heating device is an air source heat pump.
3. vacuum freeze heat recovery according to claim 1 system, it is characterized in that: said assisted heating device is a solar thermal collection system, working medium and the heat exchange of intermediate receptacle working medium among its thermal storage water tank.
4. vacuum freeze heat recovery according to claim 3 system, it is characterized in that: said intermediate receptacle also is provided with the air source heat pump assisted heating device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200289323U CN202407018U (en) | 2012-01-29 | 2012-01-29 | Recycling system for waste heat of vacuum freeze-drying equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200289323U CN202407018U (en) | 2012-01-29 | 2012-01-29 | Recycling system for waste heat of vacuum freeze-drying equipment |
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| Publication Number | Publication Date |
|---|---|
| CN202407018U true CN202407018U (en) | 2012-09-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200289323U Withdrawn - After Issue CN202407018U (en) | 2012-01-29 | 2012-01-29 | Recycling system for waste heat of vacuum freeze-drying equipment |
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| CN (1) | CN202407018U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102524912A (en) * | 2012-01-29 | 2012-07-04 | 济南大陆机电股份有限公司 | Vacuum freeze-drying equipment afterheat recycling system and method |
| CN105962004A (en) * | 2016-05-09 | 2016-09-28 | 顺德职业技术学院 | Heating control method of heat pump vacuum freeze drying combined device |
| CN108981293A (en) * | 2018-06-15 | 2018-12-11 | 上海工程技术大学 | Joint building uses the freeze dryer system and operation method of solar energy absorption type refrigeration |
-
2012
- 2012-01-29 CN CN2012200289323U patent/CN202407018U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102524912A (en) * | 2012-01-29 | 2012-07-04 | 济南大陆机电股份有限公司 | Vacuum freeze-drying equipment afterheat recycling system and method |
| CN102524912B (en) * | 2012-01-29 | 2013-02-13 | 济南大陆机电股份有限公司 | Vacuum freeze-drying equipment afterheat recycling system and method |
| CN105962004A (en) * | 2016-05-09 | 2016-09-28 | 顺德职业技术学院 | Heating control method of heat pump vacuum freeze drying combined device |
| CN105962004B (en) * | 2016-05-09 | 2019-12-20 | 顺德职业技术学院 | Heating control method of heat pump vacuum freeze drying combined equipment |
| CN108981293A (en) * | 2018-06-15 | 2018-12-11 | 上海工程技术大学 | Joint building uses the freeze dryer system and operation method of solar energy absorption type refrigeration |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120905 Effective date of abandoning: 20130306 |
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| RGAV | Abandon patent right to avoid regrant |