CN113115887A - Energy-saving sterilization unit and use method - Google Patents
Energy-saving sterilization unit and use method Download PDFInfo
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- CN113115887A CN113115887A CN202110558033.8A CN202110558033A CN113115887A CN 113115887 A CN113115887 A CN 113115887A CN 202110558033 A CN202110558033 A CN 202110558033A CN 113115887 A CN113115887 A CN 113115887A
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- 230000001954 sterilising effect Effects 0.000 title claims abstract description 53
- 238000004659 sterilization and disinfection Methods 0.000 title claims abstract description 53
- 238000000034 method Methods 0.000 title claims abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 221
- 238000003860 storage Methods 0.000 claims abstract description 99
- 239000000463 material Substances 0.000 claims abstract description 49
- 238000001816 cooling Methods 0.000 claims abstract description 22
- 238000010438 heat treatment Methods 0.000 claims description 18
- 230000008569 process Effects 0.000 claims description 18
- 230000009471 action Effects 0.000 claims description 8
- 238000007599 discharging Methods 0.000 claims description 6
- 239000011343 solid material Substances 0.000 claims description 6
- 239000011344 liquid material Substances 0.000 claims description 5
- 241000233866 Fungi Species 0.000 claims description 4
- 235000013361 beverage Nutrition 0.000 claims description 4
- 239000001963 growth medium Substances 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims 1
- 238000005086 pumping Methods 0.000 claims 1
- 239000002994 raw material Substances 0.000 claims 1
- 238000005265 energy consumption Methods 0.000 abstract description 7
- 238000004321 preservation Methods 0.000 description 5
- 238000011084 recovery Methods 0.000 description 5
- 239000002609 medium Substances 0.000 description 4
- 238000005336 cracking Methods 0.000 description 3
- 239000000284 extract Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000006837 decompression Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000011946 reduction process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000007701 flash-distillation Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
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- 235000021485 packed food Nutrition 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L2/00—Non-alcoholic beverages; Dry compositions or concentrates therefor; Their preparation
- A23L2/42—Preservation of non-alcoholic beverages
- A23L2/46—Preservation of non-alcoholic beverages by heating
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G18/00—Cultivation of mushrooms
- A01G18/30—Accessories for use before inoculation of spawn, e.g. sterilisers
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L3/00—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L3/00—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs
- A23L3/015—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by treatment with pressure variation, shock, acceleration or shear stress or cavitation
- A23L3/0155—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by treatment with pressure variation, shock, acceleration or shear stress or cavitation using sub- or super-atmospheric pressures, or pressure variations transmitted by a liquid or gas
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
- A61L2/04—Heat
- A61L2/06—Hot gas
- A61L2/07—Steam
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/26—Accessories or devices or components used for biocidal treatment
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2202/00—Aspects relating to methods or apparatus for disinfecting or sterilising materials or objects
- A61L2202/10—Apparatus features
- A61L2202/12—Apparatus for isolating biocidal substances from the environment
- A61L2202/122—Chambers for sterilisation
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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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- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Polymers & Plastics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Nutrition Science (AREA)
- Epidemiology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Mycology (AREA)
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Abstract
The invention relates to an energy-saving sterilization unit and a using method thereof. The sterilizer is internally provided with an internal heat exchanger and is connected with a high-pressure steam source; the sterilizer is connected with a sterile air inlet pipeline, and compressed air can be introduced into the sterilizer through the sterile air inlet pipeline. Also comprises a hot water storage tank and a steam compressor. The problem of the moisture material in the sterilizer because of rapid cooling rises broken package is solved, the heat is retrieved, the heat energy consumption is reduced, improves sterilization efficiency.
Description
Technical Field
The invention belongs to the technical field of high-temperature steam sterilization, and particularly relates to an energy-saving sterilization unit and a using method thereof.
Background
The information in this background section is only for enhancement of understanding of the general background of the invention and is not necessarily to be construed as an admission or any form of suggestion that this information forms the prior art that is already known to a person of ordinary skill in the art.
When the edible fungus culture medium or the packaged food, beverage and other materials are sterilized by high-pressure steam in a sterilizer, the processes of loading, reciprocating preheating, vacuumizing, heating, heat preservation, natural cooling and discharging are generally carried out. After sterilization, the materials need to be cooled to about 85 ℃ before discharging, because of high-pressure steam sterilization, the temperature and air pressure in the sterilizer are high, if the materials are solid materials without water, the temperature is generally reduced by a reduced pressure cooling mode, but the inventor finds that if the materials with high moisture content generate steam due to self-heating in the process of reducing the pressure, the phenomenon that the packaged materials are broken due to the fact that the sterilized materials generate steam can occur. Therefore, the materials with higher moisture content generally need to be cooled to below 100 ℃ in a natural cooling mode, but the natural cooling process consumes longer time, the working efficiency of the sterilizer is lower, and all the naturally dissipated heat is wasted.
Disclosure of Invention
In view of the problems in the prior art, the invention aims to provide an energy-saving sterilization unit and a using method thereof.
In order to solve the technical problems, the technical scheme of the invention is as follows:
in a first aspect, an energy-saving sterilization unit comprises,
the sterilizer is internally provided with an internal heat exchanger and is connected with a high-pressure steam source;
the sterilizer is connected with a sterile air inlet pipeline, and sterile compressed gas can be introduced into the sterilizer through the sterile air inlet pipeline.
The method is used for preventing the water-containing materials from generating steam due to self-heating and from cracking packages in the cooling process after high-temperature sterilization of a sterilizer, firstly opening a sterile air inlet pipeline to introduce compressed gas into the sterilizer, keeping the pressure in the sterilizer not to be reduced due to heat dissipation, and then taking away the heat in the sterilizer in time through a heat exchanger to quickly reduce the temperature of the water-containing sterilized materials to be below 100 ℃. The problem of the water-containing material decompression cooling cracking package is solved, and the cooling efficiency is improved.
In a second aspect, a method for using an energy-saving sterilization unit comprises the following specific steps:
in the natural cooling process of the sterilizer, sterile air is introduced into the sterilizer under the action of an air compressor for pressure maintaining or pressurization.
Starting an inner heat exchanger of the sterilizer, and discharging water in the inner heat exchanger of the sterilizer to a hot water storage tank or a warm water storage tank for storage after heat exchange;
the steam in the hot water storage tank is pumped out by a steam compressor, is pressurized and heated, and then directly enters a sterilizer in the sterilization process or enters a sterilizer in the sterilization process after being heated for the second time by a steam jet pump, so that the sterilization materials in the sterilizer are heated.
Solves the problem that the water-containing sterilization material generates steam due to self-heating to cause package expansion and breakage, solves the problem that the sterilizer has large energy consumption for high-temperature steam sterilization, and solves the problem that the sterilizer has long natural cooling time.
One or more technical schemes of the invention have the following beneficial effects:
the invention skillfully utilizes the water circulating in the internal heat exchanger in the sterilizer to carry the heat in the sterilizer at the temperature reduction stage out of the hot water storage tank or the warm water storage tank, wherein part of water in the high-temperature water storage tank is flashed into water vapor under the action of the steam compressor, the water vapor directly enters or enters the sterilizer at the temperature rise or heat preservation stage through the steam compressor after being compressed and heated, and is used as the steam for sterilization, and a closed loop for recycling the heat is formed in the unit, thereby reducing the waste of the heat and reducing the energy consumption.
The hot water of the hot water storage tank enters the steam generator to be used as a water source, so that the heat energy consumption of the steam generator can be effectively reduced.
Sterile air is added through the sterilization pipeline, so that the pressure in the sterilizer is improved or maintained, the pressure in the sterilizer is not reduced, the water circulating in the inner heat exchanger is used for carrying away heat, the temperature of the material is rapidly reduced, the situation that the material generates steam due to self-heating and the packaged material is broken due to expansion is avoided, the sterilization period is shortened, and the sterilization efficiency is improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the invention and not to limit the invention.
FIG. 1 is a schematic structural view of an energy-saving sterilization unit;
wherein, 1-an external water source, 2-a first valve, 3-an exhaust port, 4-a vacuum pump, 5-a first water pump, 6-a water discharge port, 7-a heat exchanger, 8-a second valve, 9-a warm water inlet, 10-a warm water storage tank, 11-a second water pump, 12-a steam compressor, 13-a steam generator, 14-a steam jet pump, 15-a third water pump, 16-a water inlet pipe, 17-a medium temperature steam pipeline, 18-a low temperature steam pipeline, 19-a fourth valve, 20-a fifth valve, 21-a sixth valve, 22-a seventh valve, 23-a sterilizer, 24-an internal heat exchanger, 25-an air inlet, 26-an air filter, 27-an air compressor and 28-a sterile pipeline, 29-eighth valve, 30-ninth valve, 31-tenth valve, 32-steam-water discharge pipe, 33-water outlet pipe, 34-three-way reversing valve, 35-hot water storage tank and 36-third valve.
Detailed Description
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
In a first aspect, an energy-saving sterilization unit comprises,
the sterilizer is internally provided with an internal heat exchanger and is connected with a high-pressure steam source;
the sterilizer is connected with a sterile air inlet pipeline, and compressed air can be introduced into the sterilizer through the sterile air inlet pipeline.
In some embodiments of the present invention, the heat pump system further comprises a hot water storage tank and a vapor compressor, wherein the internal heat exchanger is connected to the hot water storage tank, hot water in the internal heat exchanger can enter the hot water storage tank, the vapor compressor is connected to the hot water storage tank, and vapor in the hot water storage tank can enter the vapor compressor. Utilize through hot water storage tank and steam compressor's cooperation, realize thermal recovery, because the hot water temperature of interior heat exchanger is higher, under the vapor compressor suction effect, the continuous flash distillation of water in the hot water storage tank produces vapor, steam compressor constantly extracts, compress the vapor in the hot water storage tank, make it change into the steam more than 100 ℃, then it recycles in the sterilizer that the material is in intensification or heat preservation stage, thereby form the closed loop that heat recovery recycled in the sterilization unit, reduce the whole energy consumption of sterilization unit.
In some embodiments of the invention, the water heater further comprises a warm water storage tank, the inner heat exchanger is connected with the warm water storage tank, warm water of the inner heat exchanger can enter the warm water storage tank, and the warm water storage tank is connected with the hot water storage tank.
In some embodiments of the invention, the material within the sterilizer is a liquid material or an aqueous solid material; further, the liquid material is beverage, and the water-containing solid material is edible fungus culture medium. The materials in the sterilizer are liquid materials or water-containing solid materials, the temperature in the sterilizer is higher in the high-temperature steam sterilization process, and the materials in the sterilizer are easy to generate steam due to self-heating in the pressure reduction and temperature reduction process to expand and break packages. The invention solves the problems of heat recovery and material cracking package.
In some embodiments of the present invention, the sterile air inlet line comprises an air filter and an air compressor connected in sequence, and the air compressor is connected with the sterilizer. The air compressor is connected with the sterilizer through a sterile pipeline. The sterile air is injected into the sterilizer, the pressure in the sterilizer is kept not to be reduced, steam is prevented from being generated due to self-heating of sterilized materials due to pressure loss, meanwhile, heat in the sterilizer is carried into a hot water storage tank outside the sterilizer through a heat exchanger to be stored, and when the temperature of the materials is reduced to be below 100 ℃, the pressure in the sterilizer is reduced, so that a large amount of steam cannot be generated due to self-heating of the materials. Therefore, the materials are pressurized, a large amount of steam is prevented from being generated due to self-heating, heat is transferred at the same time, the material cooling is accelerated, the cooling time of the sterilizer is shortened due to the double pipes, and the use efficiency is improved.
In some embodiments of the invention, the heat exchanger within the sterilizer is a coil heat exchanger or a plate heat exchanger.
In some embodiments of the present invention, the heat exchanger is connected to the sterilizer, the water vapor of the sterilizer can enter the heat exchanger, the heat exchanger is connected to an external water source, and the warm water obtained by heat exchange in the heat exchanger can enter the warm water storage tank.
In some embodiments of the invention, the sterilizer further comprises a steam generator, wherein the water outlet of the hot water storage tank is connected with the steam generator, and the steam generator is connected with the sterilizer.
In some embodiments of the invention, the sterilizer further comprises a steam jet pump, wherein the steam compressor and the steam generator are both connected with the steam jet pump, and the steam jet pump is connected with the sterilizer.
In some embodiments of the invention, the outlet of the hot water tank is connected to the steam generator.
In some embodiments of the invention, the water outlet of the vapor compressor is connected to a hot water storage tank.
In some embodiments of the present invention, the clean warm water outside the unit may also enter the warm water storage tank and be utilized in the sterilization unit.
In a second aspect, a method for using an energy-saving sterilization unit comprises the following specific steps:
in the natural cooling process of the sterilizer, sterile air is introduced into the sterilizer under the action of an air compressor for pressure maintaining or pressurization.
Starting an inner heat exchanger of the sterilizer, and discharging water in the inner heat exchanger of the sterilizer to a hot water storage tank or a warm water storage tank for storage after heat exchange;
the steam in the hot water storage tank is pumped out by a steam compressor, is pressurized and heated, and then directly enters a sterilizer in the sterilization process or enters a sterilizer in the sterilization process after being heated for the second time by a steam jet pump, so that the sterilization materials in the sterilizer are heated.
In some embodiments of the present invention, the steam discharged from the steam compressor is directly fed into a sterilizer for high temperature sterilization or fed into a sterilizer or an internal heat exchanger after passing through a steam jet pump.
In some embodiments of the invention, the water discharged from the sterilizer enters an external heat exchanger to exchange heat with cold water of an external water source and then is discharged, and the warm water obtained by the external heat exchanger enters a warm water storage tank.
When the water-containing materials are sterilized by high-pressure steam in a sterilizer, the processes of loading, reciprocating preheating and vacuumizing, heating, heat preservation, cooling (about 85 ℃) and discharging are generally carried out. Because traditional steriliser must utilize natural cooling to make the material cooling, because if not natural cooling, the material is after the sterilization under high temperature high pressure, if direct reduced pressure, the moisture material must be because of the self-heating produces a large amount of steam to the broken package, but natural cooling's process time is longer, production cycle length.
The invention relates to an energy-saving sterilization unit, which comprises a sterilizer, a high-pressure steam source, a steam generator and a steam generator, wherein an inner heat exchanger is arranged in the sterilizer and is connected with the high-pressure steam source; the steam compressor is connected with the sterilizer, and the water vapor compressed by the steam compressor enters the sterilizer; the inner heat exchanger is connected with the hot water storage tank, and the heat in the sterilizer is recovered; the steam compressor is connected with the hot water storage tank, on one hand, the steam compressor extracts steam from the hot water storage tank, and on the other hand, hot water generated after the steam compressor compresses the steam is sent to the warm water storage tank; the material in the sterilizer is water-containing edible fungus culture medium or beverage.
The energy-saving sterilization unit provided by the invention can shorten the temperature reduction process of the sterilization materials, thereby shortening the production period.
In the process of material cooling, the vapor in the sterilizer can be condensed into water, so that the heat of the material and the latent heat of the vapor condensation can be taken away by the inner heat exchanger in the sterilizer, the temperature of the heat exchange medium water in the inner heat exchanger is increased, and the heat exchange medium water flows into the hot water storage tank. Two types of heat: firstly, the method comprises the following steps: the heat in the sterilizer is carried to a hot water storage tank outside the sterilizer through an internal heat exchanger for storage, and when the temperature of the materials is reduced to be below 100 ℃, the pressure in the sterilizer is reduced, so that the materials can not generate a large amount of steam due to self-heating. Second, water has a boiling point of 100 ℃ at normal atmospheric pressure, above which it vaporizes, and below which it condenses to water, the latent heat of which is about 500 times its specific heat, so that when the temperature of the material is reduced from above 100 ℃ to below 100 ℃, part of the water undergoes a phase change during this process, and a large amount of heat can be recovered and stored in a hot water storage tank.
In a hot water storage tank, water with lower air pressure and higher temperature (about 80 ℃) is flashed into steam due to the suction action of a steam compressor, the temperature of the steam is about 80 ℃, the steam is continuously pumped out and compressed by the steam compressor, part of the steam is obtained at more than 100 ℃, part of the steam is obtained, the steam at more than 100 ℃ directly enters a sterilizer or enters a high-temperature steam for sterilization through a steam jet pump, and the compressed hot water is discharged into a warm water storage tank.
Because the heat in the sterilizer is taken away by the heat exchanger, the temperature of the materials is reduced, and the mode of pressure maintaining or pressure cooling is ingeniously used, the problem that the materials generate steam to expand and break the packing materials due to self-heating is solved.
The hot water storage tank is used for temporarily storing hot water, steam is continuously extracted through the cooperation of the steam compressor and the hot water storage tank, and the steam is pressurized and converted into high-temperature sterilization steam, so that the problem that the packaged objects are broken due to expansion of the materials through decompression and rapid cooling is solved, and the steam consumption produced by the steam generator is reduced. The energy consumption is reduced.
The sterilizer also comprises an air filter and an air compressor which are connected in sequence, wherein the air compressor is connected with the sterilizer. Sterile air after being sterilized and filtered through the air filter is introduced into the sterilizer under the action of the air compressor, so that the air pressure in the sterilizer is improved or kept, the pressure in the sterilizer is not reduced, a large amount of steam cannot be generated by the water-containing materials due to self-heating, and the problem that the packaged materials are broken due to the fact that steam generated by the self-heating of the sterilized materials rises is solved by introducing sterile compressed air and keeping the pressure in the sterilizer from being reduced.
The inner heat exchanger of the sterilizer is a coil heat exchanger or a plate heat exchanger. The internal heat exchanger may be provided in a side wall within the sterilizer.
Still include the warm water storage tank, interior heat exchanger is connected with the warm water storage tank, and the warm water of interior heat exchanger can get into the warm water storage tank, and the warm water storage tank is connected with the hot water storage tank. The water with lower temperature obtained by the inner heat exchanger enters the warm water storage tank, and the water of the hot water storage tank and the water of the warm water storage tank can circulate mutually.
The water-saving sterilization device is characterized by further comprising an outer heat exchanger, the outer heat exchanger is connected with the sterilizer, water vapor of the sterilizer enters the outer heat exchanger, the outer heat exchanger is connected with an outer water source, and warm water obtained in the outer heat exchanger enters the warm water storage tank.
When the materials in the sterilizer are preheated and vacuumized in a reciprocating way, high-temperature steam is condensed, a large amount of hot water is discharged, and the hot water enters the outer heat exchanger to exchange heat with cold water to heat the cold water into warm water. The warm water enters the warm water storage tank and is used as a heat exchange medium of the internal heat exchanger and make-up water of the hot water storage tank, because the water vapor generated in the hot water storage tank is continuously pumped away by the vapor compressor and part of the water flows into the vapor generator, the water in the hot water storage tank is continuously reduced, and the warm water can be made up into the hot water storage tank.
The water outlet of the hot water storage tank is connected with the steam generator, and the steam generator is connected with the sterilizer. The water in the hot water storage tank can also be independently used as the inlet water of the steam generator, thereby reducing the energy consumption of the steam generator and realizing a closed loop of heat recovery and reutilization in the unit.
Still include the steam jet pump, steam compressor and steam generator all are connected with the steam jet pump, and the steam jet pump is connected with the steriliser. The steam generated by the steam compressor can also enter an air suction port of the steam jet pump, is mixed with high-temperature steam entering from an air inlet of the steam jet pump to form medium-temperature steam, and enters an inner heat exchanger of another sterilizer in a heating or heat preservation stage and/or an inner chamber of the sterilizer for a material sterilization process, so that a closed loop of heat recovery and reutilization is realized in the unit.
Example 1
An energy-saving sterilization unit comprises an air filter (26), an air compressor (27), a steam compressor (12), a steam jet pump (14), a hot water storage tank (35) and at least two high-pressure sterilizers (23), wherein an inner heat exchanger (24) is arranged on the inner wall of each high-pressure sterilizer (23), the outlet of each inner heat exchanger (24) is connected with a three-way reversing valve (34) through a tenth valve (31) and a water outlet pipe (33), the other two interfaces of the three-way reversing valve (34), one of the other interfaces is connected with the hot water storage tank (35), the other one of the other interfaces is connected with a warm water storage tank (10), the steam outlet at the top end of the hot water storage tank (35) is communicated with the steam inlet of the steam compressor (12) through a pipeline, the steam outlet of the steam compressor (12) is communicated with the inner chamber of the sterilizer (23) through a low-temperature steam pipeline (18) and a seventh valve (22), and is communicated with the air suction port of the, the steam outlet of the steam jet pump (14) is respectively connected with a fifth valve (20) and a sixth valve (21) through a medium-temperature steam pipeline (17), the fifth valve (20) is connected with the inlet of an internal heat exchanger (24), and the sixth valve (21) is communicated with the inner chamber of a sterilizer (23).
The outside air is changed into sterile air through an air inlet (25) under the filtering action of an air filter (26), the sterile air is communicated with the inner chamber of the sterilizer (23) through an air compressor (27), a sterile pipeline (28) and an eighth valve (29), and the sterile air is introduced into the sterilizer (23) to be pressurized or pressure-maintaining under the action of the air compressor (27).
An external water source (1) enters the external heat exchanger (7) through the first valve (2), water vapor and condensed water of the sterilizer (23) enter the external heat exchanger (7) through a vapor-water discharge pipe (32), and the vapor-water discharge pipe (32) is provided with a ninth valve (30). The external heat exchanger (7) is connected with an external water source (1), and the warm water obtained in the external heat exchanger (7) (the external water source is heated) enters a warm water storage tank (10). Condensed water obtained by condensing water vapor in the sterilizer (23) is discharged through a first water pump (5) and a water discharge port (6), and gas is discharged through a vacuum pump (4) and an exhaust port (3).
The hot water storage tank (35) is connected with the warm water storage tank (10) through a pipeline provided with a third valve (36), a water outlet of the warm water storage tank (10) is connected with an inner heat exchanger (24) of the sterilizer (23) through a water inlet pipe (16), and a third water pump (15) and a fourth valve (19) are arranged on the water inlet pipe (16). When the water level in the hot water storage tank (35) is higher than the highest set water level, a third valve (36) is opened, and part of water is drained into the hot water storage tank (10); when the water level in the hot water storage tank (35) is lower than the lowest set water level, the third valve (36) is opened to promote the water in the warm water storage tank (10) to flow into the hot water storage tank (35) for replenishment.
The hot water discharged from the hot water storage tank (35) is supplemented into the steam generator (13) through the second water pump (11) to be used as a water source.
The steam outlet of the steam generator (13) is connected with the air inlet of the steam jet pump (14), and the steam discharged from the air outlet of the steam jet pump (14) enters the sterilizer (23) and/or the inner heat exchanger (24) through the medium-temperature steam pipeline (17).
The steam compressor (12) extracts water vapor on the upper layer of the hot water storage tank (35), after compression, a part of the water vapor is converted into water and discharged into the warm water storage tank (10), and a part of the water vapor is converted into water vapor with higher temperature and directly enters the sterilizer (23) through the low-temperature steam pipeline (18) and/or enters the sterilizer (23) and/or the inner heat exchanger (24) through the medium-temperature steam pipeline (17) after passing through the steam jet pump (14).
After heat exchange, the water in the internal heat exchanger (24) of the sterilizer (23) is discharged to a hot water storage tank (35) or a warm water storage tank (10) through a three-way reversing valve (34) for storage.
Clean warm water generated outside the unit can also enter a warm water storage tank (10) through a warm water inlet (9) and a second valve (8) and is utilized in the sterilization unit.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. An energy-conserving sterilization unit which characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
the sterilizer is internally provided with an internal heat exchanger and is connected with a high-pressure steam source;
the sterilizer is connected with a sterile air inlet pipeline, and compressed air can be introduced into the sterilizer through the sterile air inlet pipeline.
2. The energy-saving sterilization unit set as claimed in claim 1, wherein: the system also comprises a hot water storage tank and a steam compressor, wherein the inner heat exchanger is connected with the hot water storage tank, hot water in the inner heat exchanger can enter the hot water storage tank, the steam compressor is connected with the hot water storage tank, and steam in the hot water storage tank can enter the steam compressor;
further, still include the warm water storage tank, interior heat exchanger is connected with the warm water storage tank, and the warm water of interior heat exchanger can get into the warm water storage tank, and the warm water storage tank is connected with the hot water storage tank.
3. The energy-saving sterilization unit set as claimed in claim 1, wherein: the material in the sterilizer is liquid material or water-containing solid material; further, the liquid material is beverage, and the water-containing solid material is edible fungus culture medium.
4. The energy-saving sterilization unit set as claimed in claim 1, wherein: the sterile air inlet pipeline comprises an air filter and an air compressor which are connected in sequence, and the air compressor is connected with the sterilizer.
5. The energy-saving sterilization unit set as claimed in claim 1, wherein: the water heater also comprises an outer heat exchanger, the outer heat exchanger is connected with the sterilizer, the steam and the condensed water of the sterilizer can enter the heat exchanger, the outer heat exchanger is connected with an outer water source, and the warm water obtained in the outer heat exchanger can enter the warm water storage tank.
6. The energy-saving sterilization unit set as claimed in claim 1, wherein: the water outlet of the hot water storage tank is connected with the steam generator, and the steam generator is connected with the sterilizer.
7. The energy-saving sterilization unit set as claimed in claim 1, wherein: still include the steam jet pump, steam compressor and steam generator all are connected with the steam jet pump, and the steam jet pump is connected with the steriliser.
8. The use method of the energy-saving sterilization unit set as claimed in any one of claims 1 to 7, characterized in that: the method comprises the following specific steps:
in the natural cooling process of the sterilizer, sterile air is introduced into the sterilizer under the action of an air compressor for pressure maintaining or pressurization;
starting an inner heat exchanger of the sterilizer, and discharging water in the inner heat exchanger of the sterilizer to a hot water storage tank or a warm water storage tank for storage after heat exchange;
pumping the water vapor in the hot water storage tank by a vapor compressor, pressurizing and heating the water vapor, and then directly or secondarily heating the water vapor by a vapor jet pump to enter a sterilizer in the sterilization process to heat or insulate the sterilization materials in the water vapor;
further, the steam discharged by the steam compressor directly enters a sterilizer for high-temperature sterilization or enters the sterilizer and/or the internal heat exchanger through a steam jet pump;
further, water discharged from the sterilizer enters an external heat exchanger to exchange heat with cold water and then is discharged, and warm water obtained by the external heat exchanger enters a warm water storage tank.
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| CN202110558033.8A CN113115887A (en) | 2021-05-21 | 2021-05-21 | Energy-saving sterilization unit and use method |
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| EP4389158A1 (en) * | 2022-12-19 | 2024-06-26 | Getinge Sterilization AB | A steam sterilizer system |
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Application publication date: 20210716 |