CN111520979B - Kitchen waste fermentation bin drying and dehumidifying device and method adopting air energy heat pump - Google Patents
Kitchen waste fermentation bin drying and dehumidifying device and method adopting air energy heat pump Download PDFInfo
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- CN111520979B CN111520979B CN202010314153.9A CN202010314153A CN111520979B CN 111520979 B CN111520979 B CN 111520979B CN 202010314153 A CN202010314153 A CN 202010314153A CN 111520979 B CN111520979 B CN 111520979B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B9/00—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards
- F26B9/06—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in stationary drums or chambers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
- F26B21/002—Drying-air generating units, e.g. movable, independent of drying enclosure heating the drying air indirectly, i.e. using a heat exchanger
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B3/00—Drying solid materials or objects by processes involving the application of heat
- F26B3/02—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air
- F26B3/06—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B2200/00—Drying processes and machines for solid materials characterised by the specific requirements of the drying good
- F26B2200/04—Garbage
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Abstract
The invention discloses a kitchen waste fermentation bin drying and dehumidifying device and method adopting an air energy heat pump, wherein the device comprises a drying and dehumidifying part and a water-water air energy heat pump which are connected, the drying and dehumidifying part surrounds the outer wall of a fermentation bin and extends from an air inlet of the fermentation bin to an air outlet of the fermentation bin, a dehumidifying condenser is arranged at the air outlet of the fermentation bin, a drying heater is arranged at the air inlet of the fermentation bin and is used for drying and heating gas entering the fermentation bin, the dehumidifying condenser is arranged at the air outlet of the fermentation bin and is used for condensing and dehumidifying gas discharged from the fermentation bin, a condensing temperature sensor is used for detecting the gas temperature at the air outlet of the fermentation bin, and a drying temperature sensor is used for detecting the gas temperature at the air inlet of the fermentation bin. The invention does not need to exhaust outside, cools high-temperature air, reduces humidity, and discharges high-humidity fermentation chamber gas outside the chamber after being cooled into condensed water to form a process of thermal gasification condensation of water, vapor and distilled water of the kitchen waste, thereby realizing zero emission, no odor and no need of deodorization equipment.
Description
Technical Field
The invention belongs to the field of environmental protection, and relates to a drying and dehumidifying device and method for a kitchen waste fermentation bin by adopting an air energy heat pump.
Background
With the continuous improvement of the living standard of people, the discharge amount of kitchen waste is increased day by day. A large amount of kitchen waste brings serious pollution and huge waste, and brings great trouble to environmental protection. Only by further resource utilization of the kitchen waste containing rich biomass, the environmental protection can be facilitated, the utilization degree of human beings on renewable resources can be increased, and the development direction of sustainable development and circular economy is met
The current kitchen waste treatment technology mainly comprises the following steps: landfill treatment, incineration treatment, feed treatment, anaerobic fermentation treatment, aerobic composting treatment, aerobic microorganism treatment and the like.
The aerobic microorganism treatment technology is a more common and mature treatment technology. But not only feed treatment or aerobic composting treatment. In the prior art, the whole process needs dehydration, dehumidification or drying to achieve the maximum decrement of the water content.
Most of the existing methods for dewatering and reducing the quantity of kitchen waste are in the process of kitchen waste fermentation: the dewatering is reduced by draining water or heating to achieve thermal gasification ventilation. Generally, the water content of the kitchen waste is reduced to a water content close to that of the fermentation of the strains (for example, the water content of a B-type microbial agent in a microecological microbial agent of Shanghai dry-bound Biotech limited company is 50% -60% by fermentation) through pretreatment, such as crushing and extrusion treatment. And then the kitchen waste is sent into a fermentation bin of the kitchen treatment equipment for fermentation, the fermentation bin is provided with a bin body heating source for heating the kitchen waste to the fermentation temperature required by the strains, and the kitchen waste is fermented under the conditions of certain moisture content and temperature. There are generally two ways of handling the water produced during fermentation: the first is direct drainage. Directly discharging the water generated in the fermentation process, pumping the water to oil-water separation equipment, and then performing water treatment. The second is thermal gasification. Through the air in heating fermentation storehouse, make the air after relative humidity reaches the concentration under the environment of high temperature, open the breather valve, outside the fermentation storehouse air discharge storehouse with high humidity, gaseous emission processing is carried out to the rethread deodorization system.
However, the two existing dehumidification technologies have the disadvantages that:
1. the secondary pollution can be produced to the drainage mode, even water treatment such as rethread oil-water separation, the drainage decrement still is limited, reaches the effect of true decrement, still will cooperate the second mode under most circumstances, and the technical shortcoming is: secondary pollution, long treatment period, various related equipment, complex treatment procedures, high equipment cost, high post-operation cost and the like.
2. The method is a thermal gasification process for directly heating materials or air in a fermentation bin, discharging moisture out of the fermentation bin through air humidity, and treating the discharged gas through deodorization equipment, such as UV ultraviolet deodorization, plasma deodorization, spray tower deodorization and the like. The technical defects are as follows: equipment, processing cost and energy consumption are increased; moreover, the gas after the deodorization treatment affects the surrounding environment, and is liable to cause complaints from surrounding residents.
The air energy heat pump system has ultra-high energy efficiency ratio (COP), is energy-saving and environment-friendly, and gets more and more attention and application. Most of the conventional air energy heat pumps are used for producing hot water or hot air, and are mostly used in heating, refrigeration, hot water and other application scenes. The structure of the air energy heat pump in the prior art is shown in figure 1: the system comprises an air energy heat pump compressor 16, a water-fluorine condenser 2 (comprising a sleeve pipe type heat exchanger, a plate type heat exchanger, a shell-and-tube type heat exchanger and a spiral shell-and-tube type heat exchanger), an electronic expansion valve 3, a wind-fluorine evaporator 17, a four-way valve 5, a liquid storage tank 6, a gas-liquid separator 7, a high-pressure valve 8, a high-pressure gauge 9, a low-pressure valve 10, a low-pressure gauge 11, a filter 18, a control panel and the like.
The working principle is as follows: the air energy heat pump compressor 16 compresses refrigerant (working medium) in a system pipeline, the refrigerant is converted into high-temperature liquid under the high pressure of the air energy heat pump compressor 16 and flows to the input end of the four-way valve 5, the high-temperature liquid flows out of the output end and passes through the high-pressure protection valve 8 and the high-pressure gauge 9 (the high-pressure protection valve has ultrahigh pressure protection function, and the high-pressure gauge has monitoring function), heat is sent to the water-fluorine condenser 2, the water-fluorine condenser 2 generates high-temperature heat, the heat of the high-temperature water-fluorine condenser 2 can be utilized through water or wind at the moment, if the water flows through the water-fluorine condenser 2 and becomes hot water, the wind flows through the water-fluorine condenser 2 and becomes hot wind. The refrigerant after releasing heat is output from the water-fluorine condenser 2, passes through the liquid storage tank 6 (the liquid storage tank plays a role of supplementing the refrigerant) and the filter 18, is sent to the electronic expansion valve 3, and is decompressed into low-temperature and low-pressure gas under the action of the brake flow of the electronic expansion valve 3. The low-temperature and low-pressure gas enters the wind-fluorine evaporator 17, the heat of the wind-fluorine evaporator 17 is absorbed to reduce the temperature of the wind-fluorine evaporator 17, and at the moment, the wind-fluorine evaporator 17 rapidly absorbs the heat into the air through a fan (the wind of the fan is changed into cold wind for refrigeration after passing through the wind-fluorine evaporator 17). The low-pressure refrigerant after the refrigerant absorbs heat through the wind-fluorine evaporator 17 passes through the low-pressure valve 10 (low-pressure protection function) and the low-pressure meter 9 (low-pressure monitoring function), then is sent to the other group of input ends of the four-way valve 5, is output from the other group of input ends, passes through the gas-liquid separator 7, and flows back to the air energy heat pump compressor 16 to repeat a new cycle of compression. The heat in the air is continuously absorbed by the wind-fluorine evaporator 17 and then is sent to the water-fluorine condenser 2 to provide heat for the scene.
Disclosure of Invention
In order to solve the above problems, an object of the present invention is to provide a device for drying and dehumidifying a kitchen waste fermentation chamber by using air energy, wherein the energy efficiency ratio (or thermal efficiency, COP) is 4-5 times higher than that of the existing treatment heating technology, and the ultra-high COP heated by air energy is a crucial technical link for reducing the operation cost. The hot gasification condensation process of the water, the steam and the condensed water in the kitchen waste is formed, zero emission is realized, no odor is emitted, and a large amount of deodorization equipment is not required.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a drying and dehumidifying device of a kitchen waste fermentation bin by adopting an air energy heat pump comprises a drying and dehumidifying part and a water-water air energy heat pump which are connected, wherein,
the drying and dehumidifying part surrounds the outer wall of the fermentation bin and extends from the air inlet of the fermentation bin to the air outlet of the fermentation bin, and the drying and dehumidifying part comprises a dehumidifying condenser, a dehumidifying condensation water inlet, a dehumidifying condensation water outlet, a condensation temperature sensor, a condensation water outlet, a drying heater, a drying heating water inlet, a drying heating water outlet and a drying temperature sensor; the dehumidifying condenser is arranged at the air outlet of the fermentation bin, the drying heater is arranged at the air inlet of the fermentation bin and is used for drying and heating the gas entering the fermentation bin, the dehumidifying condenser is arranged at the air outlet of the fermentation bin and is used for condensing and dehumidifying the gas discharged from the fermentation bin, the condensing temperature sensor is used for detecting the gas temperature at the air outlet of the fermentation bin, and the drying temperature sensor is used for detecting the gas temperature at the air inlet of the fermentation bin;
the water-water air energy heat pump comprises a water-fluorine condenser, a water-fluorine evaporator and a variable frequency compressor, wherein the water-fluorine condenser provides a heat source for a drying heater, the water-fluorine evaporator provides a cold source for a dehumidifying condenser, a water-fluorine condenser water outlet is connected with a drying heating water inlet, a water-fluorine condenser water inlet is connected with a drying heating water outlet, a water-fluorine evaporator water outlet is connected with a dehumidifying condensing water inlet, a water-fluorine evaporator water inlet is connected with a dehumidifying condensing water outlet, and the variable frequency compressor adjusts the working frequency according to the temperature difference detected by a condensing temperature sensor and a drying temperature sensor and changes the output power of the water-water air energy heat pump.
Preferably, the side cross-sectional shape of stoving dehumidification portion is big rectangle, falls trapezoidal and little rectangle from top to bottom, big rectangular long limit length is the same with the long limit length that falls trapezoidal, little rectangular long limit length is the same with the short side length that falls trapezoidal.
Preferably, the drying system further comprises a condensation circulating water pump and a drying circulating water pump, wherein the condensation circulating water pump is arranged between the dehumidification condensation water outlet and the water inlet of the water-fluorine evaporator, and the drying circulating water pump is arranged between the drying heating water outlet and the water inlet of the water-fluorine condenser.
Preferably, a condensed water path liquid level device is arranged beside the condensed water circulating pump to supplement the condensed water liquid level output by the dehumidifying condenser.
Preferably, a drying water circuit liquid level device is arranged beside the drying circulating water pump to supplement the water liquid level output by the drying heater.
Preferably, the drying dehumidification part further comprises an external circulation ventilation door and an external circulation ventilation actuator, and the external circulation ventilation door and the external circulation ventilation actuator are arranged on the outer wall of the lower side of the fermentation bin.
Preferably, the drying and dehumidifying part further comprises a booster fan and a booster rotating blade which are arranged on the outer wall of the lower side of the fermentation bin.
Based on the purpose, the invention also provides a drying and dehumidifying method for the kitchen waste fermentation bin by adopting the air energy heat pump, and the device comprises the following steps:
s10, starting the water-water air energy heat pump: the variable frequency compressor applies work to a refrigerant in the water-water air energy heat pump to generate pressure, the refrigerant forms a high-pressure high-temperature liquid under the pressure, the high-temperature liquid refrigerant is output from the upper end of the compressor to send heat to the water-fluorine condenser, the water-fluorine condenser generates a heat source, after the heat source releases heat in the water-fluorine condenser, low-temperature gaseous refrigerant flows into the water-fluorine evaporator, the water-fluorine evaporator generates a cold source, after the heat is absorbed by the water-fluorine evaporator, the gaseous refrigerant flows back to the variable frequency compressor, and the next compression operation is repeated;
s20, the water-fluorine condenser provides heat for the drying heater: the heat source generated by the water-fluorine condenser is output from a water outlet of the water-fluorine condenser, hot water is input into a drying heating water inlet to provide high-temperature heat for the drying heater, and after the high-temperature heat is released by the drying heater, the hot water with reduced temperature is output from the drying heating water outlet and flows back to the water inlet of the water-fluorine condenser;
s30, the water-fluorine evaporator provides cold for the dehumidifying condenser: the cold source generated by the water-fluorine evaporator is output from the water outlet of the water-fluorine evaporator, cold water is input into the dehumidification condensation water inlet to provide low-temperature cold energy for the dehumidification condenser, and after the low-temperature cold source absorbs heat from high-temperature humid air output by the fermentation bin, cold water with increased temperature is output from the dehumidification condensation water outlet and flows back to the water inlet of the water-fluorine evaporator;
s40, the high-temperature humid gas in the fermentation bin forms convection under the action of a booster fan, the gas is output from an air outlet of the fermentation bin, passes through a dehumidifying condenser, suddenly meets cold to form water, reduces the humidity, passes through a dehumidifying air channel on the outer wall of the fermentation bin, passes through a drying heater, is heated and dried by the drying heater, and then is dispersed into the fermentation bin from an air inlet of the fermentation bin to form air flow, condensed water drops formed by the dehumidifying condenser flow to the lowest part of the air channel along the dehumidifying air channel under the action of gravity and the air flow, and is discharged from a condensed water outlet;
and repeating the step S40 to form a cyclic process of condensing the output gas and heating the input gas of the fermentation bin, and continuously condensing and drying the gas in the fermentation bin, so that the moisture in the fermentation bin is discharged in a condensing mode.
Preferably, in the process of S40, the external circulation ventilation door is opened by controlling the external circulation ventilation actuator to ventilate the inside and the outside of the fermentation chamber.
Preferably, in the S40 process, the operating frequency of the inverter compressor is adjusted and controlled according to the temperature difference between the drying temperature sensor and the condensing temperature sensor and in combination with the dew point forming parameter, so as to control the output power of the water-water air energy heat pump, and thus control the temperature difference between the drying heater and the dehumidifying condenser.
Compared with the prior art, the invention has the following beneficial effects:
1. in the kitchen waste treatment process, except for supplementing oxygen, no other odor is discharged. The environment is more environment-friendly, no emission and pollution are caused, and energy is clean; the method is more suitable for the environmental protection idea of kitchen waste treatment;
2. a large amount of distilled water discharged by the dehumidifying condenser can be recycled and can be used for washing sanitary wares, sewers and the like, so that the whole operation and maintenance cost in the later period is reduced;
3. the kitchen waste treatment supporting equipment is reduced, the traditional kitchen waste treatment mode needs to be matched with complex deodorization equipment such as UV light oxygen, a spray tower, plasma and the like in the aspect of gas deodorization, and the equipment also needs to consume a large amount of electric energy in the operation process; the invention can be completed by only arranging a simple plasma deodorization (short time ventilation use), thereby saving the cost and reducing the later operation cost (maintenance cost and electricity charge);
4. the energy is saved doubly, the heat of the heated air is recovered and reheated, and the COP of the air energy heat pump can be increased to 4-5 times of that of the traditional equipment in the whole closed loop process;
for example, the following steps are carried out: what heating device in 2 tons of kitchen garbage treatment facility fermentation storehouses adopted among the prior art is that 4 pieces of 4 KW's electric wire heating rod produces thermal gasification through adding the material and discharges, and the energy efficiency ratio of this heating rod is about 0.9, and the heating capacity is equivalent to: 4 x 0.9 ═ 14.4 KW.
The invention adopts the 7P water-water air energy heat pump, the highest heating energy efficiency ratio can reach 4.0, the refrigerating energy conversion ratio can reach 3.6, the theoretical power consumption is 1P and is approximately equal to 900W, the total power consumption of the 7P water-water air energy heat pump is approximately 6.3KW, and the theoretical highest heating/refrigerating capacity is equivalent to that of the following components: 6.3 × 4.0 ═ 25.2 KW; 6.3 × 3.6 ═ 22.68 KW.
The theoretical thermal gasification power consumption is 39.3% of that of the kitchen waste treatment equipment in the prior art, and the theoretical dehumidification capacity is 141% of that of the kitchen waste treatment equipment in the prior art.
5. A closed-loop environment is formed and is not influenced by the environment-friendly temperature; the efficiency of the water-water air energy heat pump is influenced by the ambient temperature, and the lower the ambient temperature is, the less ideal the heating effect is; the higher the ambient temperature, the less desirable the refrigeration effect. The invention changes the influence of the environment temperature on the water-water air energy heat pump, the dehumidifying air channel formed between the drying dehumidifying part and the outer wall of the fermentation bin forms a closed loop, the environment temperature is only influenced by the temperature in the fermentation bin, after the interior of the fermentation bin is heated to a certain temperature, the water-water air energy heat pump works constantly with the temperature in the fermentation bin as the running environment temperature and is not influenced by the environment temperature, and the water-water air energy heat pump works at a more proper environment temperature by matching with a proper strain fermentation temperature.
Drawings
FIG. 1 is a schematic diagram of a prior art air-source heat pump;
FIG. 2 is a block diagram of a kitchen waste fermentation chamber drying and dehumidifying device using an air energy heat pump according to a specific embodiment of the device;
FIG. 3 is a schematic structural view of a water-water air energy heat pump of a kitchen waste fermentation bin drying and dehumidifying device adopting the air energy heat pump according to a specific embodiment of the device;
FIG. 4 is a schematic structural diagram of a kitchen waste fermentation bin drying and dehumidifying device using an air energy heat pump according to a specific embodiment of the device;
FIG. 5 is a schematic top view of a fermentation chamber of a drying and dehumidifying device of a kitchen waste fermentation chamber using an air energy heat pump according to an embodiment of the present invention;
FIG. 6 is a schematic side view of a fermentation chamber of a drying and dehumidifying device of a kitchen waste fermentation chamber using an air energy heat pump according to a specific embodiment of the device;
FIG. 7 is a schematic cross-sectional view of a fermentation chamber of a drying and dehumidifying device of a kitchen waste fermentation chamber using an air-source heat pump according to a specific embodiment of the device;
fig. 8 is a flow chart of steps of a drying and dehumidifying method for a kitchen waste fermentation bin using an air energy heat pump according to an embodiment of the method of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
On the contrary, the invention is intended to cover alternatives, modifications, equivalents and alternatives which may be included within the spirit and scope of the invention as defined by the appended claims. Furthermore, in the following detailed description of the present invention, certain specific details are set forth in order to provide a better understanding of the present invention. It will be apparent to one skilled in the art that the present invention may be practiced without these specific details.
Apparatus example 1
Referring to fig. 2 to 4, the drying and dehumidifying device for a kitchen garbage fermentation bin using an air energy heat pump according to the embodiment of the present invention includes a drying and dehumidifying part 88 and a water-water air energy heat pump 30 connected to each other, wherein,
the drying and dehumidifying part 88 surrounds the outer wall of the fermentation bin 66 and extends from the fermentation bin air inlet 25 to the fermentation bin air outlet 22, and the drying and dehumidifying part 88 comprises a dehumidifying condenser 21, a dehumidifying condensation water inlet 24, a dehumidifying condensation water outlet 20, a condensation temperature sensor 23, a condensation water outlet 35, a drying heater 26, a drying heating water inlet 33, a drying heating water outlet 27 and a drying temperature sensor 34; the dehumidifying condenser 21 is arranged at the fermentation bin air outlet 22, the drying heater 26 is arranged at the fermentation bin air inlet 25 and is used for drying and heating the gas entering the fermentation bin 66, the dehumidifying condenser 21 is arranged at the fermentation bin air outlet 22 and is used for condensing and dehumidifying the gas discharged from the fermentation bin 66, the condensing temperature sensor 23 is used for detecting the gas temperature at the fermentation bin air outlet 22, and the drying temperature sensor 34 is used for detecting the gas temperature at the fermentation bin air inlet 25;
the water-water air energy heat pump 30 comprises a water-fluorine condenser 2, a water-fluorine evaporator 4 and a variable frequency compressor 1, wherein the water-fluorine condenser 2 provides a heat source for a drying heater 26, the water-fluorine evaporator 4 provides a cold source for a dehumidifying condenser 21, a water-fluorine condenser water outlet 12 is connected with a drying heating water inlet 33, a water-fluorine condenser water inlet 13 is connected with a drying heating water outlet 27, a water-fluorine evaporator water outlet 14 is connected with a dehumidifying condensing water inlet 24, a water-fluorine evaporator water inlet 15 is connected with a dehumidifying condensing water outlet 20, the variable frequency compressor 1 adjusts the working frequency according to the temperature difference detected by a condensing temperature sensor 23 and a drying temperature sensor 34, and the output power of the water-water air energy heat pump 30 is changed.
The water-fluorine condenser 2 and the water-fluorine evaporator 4 of the water-water air energy heat pump 30 both adopt water-fluorine heat exchangers, the water-fluorine heat exchangers comprise a sleeve-type heat exchanger, a plate-type heat exchanger, a shell-and-tube heat exchanger, a spiral shell-and-tube heat exchanger and the like, wherein the water-fluorine heat exchangers have better heat exchange efficiency and belong to brazed heat exchangers in the plate-type heat exchangers, a brazed heat exchanger can be adopted in the specific embodiment, and the heat conductivity coefficient of the brazed heat exchanger can reach 2000-6000W/m2The temperature is the same as that of the air energy heat pump in the prior art, and other parts comprise an electronic expansion valve 3, a four-way valve 5, a liquid storage tank 6, a gas-liquid separator 7, a high-pressure valve 8, a high-pressure meter 9, a low-pressure valve 10, a low-pressure meter 11, a filter 18, a variable-frequency drive board, a control board and the like.
In the specific embodiment, the drying system further comprises a condensation circulating water pump 31 and a drying circulating water pump 29, wherein the condensation circulating water pump 31 is arranged between the dehumidification condensation water outlet 20 and the water inlet of the water-fluorine evaporator 4, and the drying circulating water pump 29 is arranged between the drying heating water outlet 27 and the water inlet of the water-fluorine condenser 2.
A condensation water circuit liquid level device 32 is arranged beside the condensation circulating water pump 31 to supplement heat-carrying media and monitoring media liquid levels in the condensation conveying channel.
A drying waterway liquid level device 28 is arranged beside the drying circulating water pump 29 to supplement heat-carrying media and monitoring medium liquid level in the drying transmission channel.
Apparatus example 2
Referring to fig. 5-7, further, the drying and dehumidifying part 88 has a side cross-sectional shape of a large rectangle, an inverted trapezoid and a small rectangle from top to bottom, the length of the long side of the large rectangle is the same as the length of the long side of the inverted trapezoid, and the length of the long side of the small rectangle is the same as the length of the short side of the inverted trapezoid.
The drying dehumidification part 88 also comprises an external circulation ventilation door 57 and an external circulation ventilation actuator 46 which are arranged at the lower outer wall of the fermentation bin 66. The drying and dehumidifying part 88 further comprises a booster fan 48 and a booster rotating blade 55, which are arranged on the outer wall of the lower side of the fermentation chamber 66.
Through the arrangement, when the water-water air energy heat pump 30 starts to work, the variable frequency compressor 1 applies work to the refrigerant in the water-water air energy heat pump 30 to generate pressure, the refrigerant forms a high-pressure and high-temperature liquid under the pressure, the high-temperature liquid refrigerant is output from the upper end of the variable frequency compressor 1, passes through the high-pressure protective valve 8 and the high-pressure gauge 9, flows through the four-way valve 5, and then transmits heat to the water-fluorine condenser 2, the water-fluorine condenser 2 generates a heat source, and the heat source releases the heat in the water-fluorine condenser 2, then passes through the liquid storage tank 6 and the filter 18, and then the liquid refrigerant with the reduced temperature is transmitted to the electronic expansion valve 3; the pressure loss is carried out under the action of the brake flow of the electronic expansion valve 3, the refrigerant is changed into low-pressure and low-temperature gaseous refrigerant, the low-temperature liquid refrigerant flows into the water-fluorine evaporator 4, a cold source is generated in the water-fluorine evaporator 4, the gaseous refrigerant flows through the other group of channels of the four-way valve 5 after the heat is absorbed by the water-fluorine evaporator 4, and then flows back to the variable frequency compressor 1 through the low-pressure protection valve 10, the low-pressure meter 11 and the gas-liquid separator 7, and the next compression operation is carried out again. The heat (heat source) is generated on the water-fluorine condenser 2 and the cold (cold source) is generated on the water-fluorine evaporator 4 in a cycle; the working frequency of the variable frequency compressor 1 is controlled, the output power of the water-water air energy heat pump 30 can be changed, so that the temperature difference between a heat source and a cold source is controlled, the drying and dehumidifying part 88 works under the optimal dew point temperature difference, and the energy is saved and the efficiency is high.
The heat source generated by the water-fluorine condenser is output through a water-fluorine condenser water outlet 12 under the action of a drying circulating water pump 29, is butted with a drying heating water inlet 33 in a hot water mode, the heat is sent to a drying heater 26, high-temperature heat is generated by the drying heater 26, after the high-temperature heat is released by the drying heater 26, the hot water with reduced temperature is output through a drying heating water outlet 27, and is pumped back to a water-fluorine condenser water inlet 13 through the drying circulating water pump 29 after passing through a drying water channel liquid level device, and flows back to the water-fluorine condenser 2 of the water-water air energy heat pump 30. Thus, the drying heater 26 is continuously supplied with a continuous drying heat.
The cold source generated by the water-fluorine evaporator is output through the water outlet 14 of the water-fluorine evaporator under the action of the condensation circulating water pump 31, is butted with the dehumidification condensation water inlet 24 in a cold water mode, sends cold energy into the dehumidification condenser 21, and generates a low-temperature cold source in the dehumidification condenser 21; after the low-temperature cold source absorbs heat from the high-temperature humid gas in the fermentation bin 66, cold water with increased temperature is output from the dehumidification condensation water outlet 20, passes through the condensation water channel liquid level device 32, is pumped back to the water-fluorine evaporator water inlet 15 by the condensation circulating water pump 31, and flows back to the water-fluorine evaporator 4 of the water-water air energy heat pump 30. Thus, the dehumidifying condenser 21 is continuously supplied with continuous dehumidifying cooling capacity.
The drying and dehumidifying part 88 is provided with a dehumidifying air channel 47 outside the fermentation chamber 66, and under the action of the pressurizing motor 48 and the pressurizing rotating blade 55, circulating convection is formed between the dehumidifying air channel 47 and the fermentation chamber 66. The materials in the fermentation chamber 66 are heated to the temperature required by the strains through a bottom heating device according to the requirements of the fermentation strains.
Under the convection action of the gas in the fermentation bin 66, the gas passes through the drying heater 26 through the dehumidification air duct 47, is heated by the drying heater 26, and then dispersedly enters the fermentation bin 66 through the fermentation bin air inlet 25 to form airflow. Under the guidance of the fermentation chamber air inlet guide plate 49, the airflow contacts the materials and the stirring mechanism in the fermentation chamber 66 along the direction of the airflow direction 41 of the fermentation chamber 66 downwards along the chamber wall. After the high-temperature air flow contacts with the materials containing water in the fermentation chamber, the humidity of the air flow rises continuously, and the air flow with the humidity rising to a certain degree is dispersed and discharged out of the fermentation chamber 66 along the wall of the fermentation chamber through the air outlet 22 of the fermentation chamber along the direction of the air flow direction 41 of the fermentation chamber 66 under the action of the air outlet guide plate 44 of the fermentation chamber. When the high-humidity airflow passes through the dehumidifying condenser 21 after exiting the fermentation bin 66, the airflow suddenly cools to form moisture in the dehumidifying condenser 21, the moisture accumulates to form a plurality of water drops (becomes distilled water), the water drops flow to the lowest position of the air duct along the dehumidifying air duct 47 under the action of gravity and the airflow, and the distilled water is discharged out of the bin through the condensate water outlet 35.
The air flow after being dehumidified and cooled by the dehumidifying condenser 21 flows to the supercharging rotating vane 55 along the dehumidifying air channel 47 along the direction of the dehumidifying air channel flow direction 45, and the supercharging rotating vane 55 rotates at a high speed to increase the air pressure under the driving of the supercharging motor 48. The airflow with increased wind pressure flows back to the drying heater 26 along the dehumidifying air duct 47 to be reheated along the direction of the dehumidifying air duct flow direction 45. The air flow in the fermentation chamber 66 is repeatedly formed, and the moisture in the fermentation chamber 66 is continuously condensed through the heating-cooling circulation process, so as to achieve the purposes of drying and dehumidifying.
Method example 1
Referring to fig. 8, the kitchen waste fermentation bin drying and dehumidifying method using the air energy heat pump adopts the kitchen waste fermentation bin drying and dehumidifying device using the air energy heat pump, and includes the following steps:
s10, starting the water-water air energy heat pump: the variable frequency compressor works on a refrigerant in the water-water air energy heat pump to generate pressure, the refrigerant forms a high-pressure high-temperature liquid under the pressure, the high-temperature liquid refrigerant is output from the upper end of the compressor to send heat to the water-fluorine condenser, a heat source is generated in the water-fluorine condenser, after the heat source releases heat in the water-fluorine condenser, the refrigerant passes through the electronic expansion valve, and low-temperature low-pressure gaseous refrigerant is converted under the throttling and pressure reducing of the expansion valve. The low-temperature gaseous refrigerant flows into the water-fluorine evaporator, a cold source is generated in the water-fluorine evaporator, the gaseous refrigerant flows back to the variable frequency compressor after the water-fluorine evaporator absorbs heat, and the next compression operation is repeatedly performed;
s20, the water-fluorine condenser provides heat for the drying heater: the heat source generated by the water-fluorine condenser is output from a water outlet of the water-fluorine condenser, hot water is input into a drying heating water inlet to provide high-temperature heat for the drying heater, and after the high-temperature heat is released by the drying heater, the hot water with reduced temperature is output from the drying heating water outlet and flows back to the water inlet of the water-fluorine condenser;
s30, the water-fluorine evaporator provides cold for the dehumidifying condenser: the cold source generated by the water-fluorine evaporator is output from the water outlet of the water-fluorine evaporator, cold water is input into the dehumidification condensation water inlet to provide low-temperature cold energy for the dehumidification condenser, and after the low-temperature cold source absorbs heat from high-temperature humid air output by the fermentation bin, cold water with increased temperature is output from the dehumidification condensation water outlet and flows back to the water inlet of the water-fluorine evaporator;
s40, the high-temperature humid gas in the fermentation bin forms convection under the action of a booster fan, the gas is output from an air outlet of the fermentation bin, passes through a dehumidifying condenser, suddenly meets cold to form water, reduces the humidity, passes through a dehumidifying air channel on the outer wall of the fermentation bin, passes through a drying heater, is heated and dried by the drying heater, and then is dispersed into the fermentation bin from an air inlet of the fermentation bin to form air flow, condensed water drops formed by the dehumidifying condenser flow to the lowest part of the air channel along the dehumidifying air channel under the action of gravity and the air flow, and is discharged from a condensed water outlet;
and repeating the step S40 to form a cyclic process of condensing the output gas and heating the input gas of the fermentation bin, and continuously condensing and drying the gas in the fermentation bin, so that the moisture in the fermentation bin is discharged in a condensing mode.
Method example 2
Further, in the process of S40, the outside circulation ventilation door is opened by controlling the outside circulation ventilation actuator to ventilate the inside and outside of the fermentation chamber. Because the fermentation process needs certain oxygen, the outer circulation ventilation door is opened by controlling the outer circulation ventilation actuator, so that the fermentation chamber and the chamber are ventilated, the outer circulation ventilation actuator and the outer circulation ventilation door form a semi-ventilation mode, the ventilation time is short, the outer circulation ventilation door is closed after ventilation is finished, and a ventilation structure formed by the outer circulation ventilation door and the outer circulation ventilation door also has the function of adjusting the temperature difference of cold air and hot air of the drying and dehumidifying part.
Method example 3
Further, in the process of S40, the operating frequency of the inverter compressor is adjusted and controlled according to the temperature difference between the drying temperature sensor and the condensing temperature sensor and in combination with the dew point forming parameter, so as to control the output power of the water-water air energy heat pump, thereby achieving the effect of controlling the temperature difference between the drying heater and the dehumidifying condenser and enabling the device to operate in the optimal dehumidifying state.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. A drying and dehumidifying device of a kitchen waste fermentation bin by adopting an air energy heat pump is characterized by comprising a drying and dehumidifying part and a water-water air energy heat pump which are connected, wherein,
the drying and dehumidifying part surrounds the outer wall of the fermentation bin and extends from the air inlet of the fermentation bin to the air outlet of the fermentation bin, and the drying and dehumidifying part comprises a dehumidifying condenser, a dehumidifying condensation water inlet, a dehumidifying condensation water outlet, a condensation temperature sensor, a condensation water outlet, a drying heater, a drying heating water inlet, a drying heating water outlet and a drying temperature sensor; the dehumidifying condenser is arranged at the air outlet of the fermentation bin, the drying heater is arranged at the air inlet of the fermentation bin and is used for drying and heating the gas entering the fermentation bin, the dehumidifying condenser is arranged at the air outlet of the fermentation bin and is used for condensing and dehumidifying the gas discharged from the fermentation bin, the condensing temperature sensor is used for detecting the gas temperature at the air outlet of the fermentation bin, and the drying temperature sensor is used for detecting the gas temperature at the air inlet of the fermentation bin; the drying and dehumidifying part is characterized in that the side section shapes of the drying and dehumidifying part are a large rectangle, an inverted trapezoid and a small rectangle from top to bottom, the length of the long side of the large rectangle is the same as that of the long side of the inverted trapezoid, and the length of the long side of the small rectangle is the same as that of the short side of the inverted trapezoid; the drying dehumidification part also comprises an external circulation ventilation door and an external circulation ventilation actuator, and is arranged on the outer wall of the lower side of the fermentation bin;
the water-water air energy heat pump comprises a water-fluorine condenser, a water-fluorine evaporator and a variable frequency compressor, wherein the water-fluorine condenser provides a heat source for a drying heater, the water-fluorine evaporator provides a cold source for a dehumidifying condenser, a water outlet of the water-fluorine condenser is connected with a drying heating water inlet, a water inlet of the water-fluorine condenser is connected with a drying heating water outlet, a water outlet of the water-fluorine evaporator is connected with a dehumidifying condensing water inlet, a water inlet of the water-fluorine evaporator is connected with a dehumidifying condensing water outlet, the variable frequency compressor adjusts the working frequency according to the temperature difference detected by a condensing temperature sensor and a drying temperature sensor, and the output power of the water-water air energy heat pump is changed,
when the water-water air energy heat pump starts to work, the variable frequency compressor works on a refrigerant in the water-water air energy heat pump to generate pressure, the refrigerant forms a high-pressure and high-temperature liquid under the pressure, the high-temperature liquid refrigerant is output from the upper end of the variable frequency compressor, passes through a high-pressure protection valve and a high-pressure meter, flows through a four-way valve, and then is sent to a water-fluorine condenser, a heat source is generated in the water-fluorine condenser, and after the heat source releases heat in the water-fluorine condenser, the liquid refrigerant with reduced temperature is sent to an electronic expansion valve after passing through a liquid storage tank and a filter; the pressure loss is carried out under the action of the electronic expansion valve brake flow, the refrigerant is changed into low-pressure and low-temperature gaseous refrigerant, the low-temperature liquid refrigerant flows into the water-fluorine evaporator, a cold source is generated in the water-fluorine evaporator, the gaseous refrigerant flows through the other group of channels of the four-way valve after the heat is absorbed by the water-fluorine evaporator, then the gaseous refrigerant flows back to the variable-frequency compressor through the low-pressure protection valve, the low-pressure meter and the gas-liquid separator, the next compression operation is carried out again, the operation is repeated, the heat is generated on the water-fluorine condenser, and the cold energy is generated on the water-fluorine evaporator; the working frequency of the variable frequency compressor is controlled, the output power of the water-water air energy heat pump is changed, and therefore the temperature difference between the heat source and the cold source is controlled, and the drying and dehumidifying part works under the optimal dew point temperature difference.
2. The drying and dehumidifying device for the kitchen waste fermentation bin adopting the air energy heat pump as recited in claim 1, further comprising a condensation circulating water pump and a drying circulating water pump, wherein the condensation circulating water pump is arranged between the dehumidification condensation water outlet and the water-fluorine evaporator water inlet, and the drying circulating water pump is arranged between the drying heat-generating water outlet and the water-fluorine condenser water inlet.
3. The drying and dehumidifying device for the kitchen waste fermentation bin adopting the air-source heat pump as claimed in claim 2, wherein a condensation waterway liquid level indicator is arranged beside the condensation circulating water pump to supplement the condensed water liquid level output by the dehumidifying condenser.
4. The drying and dehumidifying device of the kitchen waste fermentation bin adopting the air energy heat pump as claimed in claim 2, wherein a drying water circuit liquid level device is arranged beside the drying circulating water pump to supplement the water liquid level output by the drying heater.
5. The drying and dehumidifying device for the kitchen garbage fermentation bin adopting the air-source heat pump as claimed in claim 1, wherein the drying and dehumidifying part further comprises an external circulation ventilation door and an external circulation ventilation actuator, and the external circulation ventilation door and the external circulation ventilation actuator are arranged on the outer wall of the lower side of the fermentation bin.
6. The drying and dehumidifying device for the kitchen waste fermentation bin adopting the air-source heat pump as recited in claim 1, wherein the drying and dehumidifying part further comprises a booster fan and a booster rotating blade, and is disposed on an outer wall of a lower side of the fermentation bin.
7. A drying and dehumidifying method for a kitchen waste fermentation bin by using an air energy heat pump is characterized in that the device of any one of claims 1 to 6 is adopted, and the drying and dehumidifying method comprises the following steps:
s10, starting the water-water air energy heat pump: the variable frequency compressor applies work to a refrigerant in the water-water air energy heat pump to generate pressure, the refrigerant forms a high-pressure high-temperature liquid under the pressure, the high-temperature liquid refrigerant is output from the upper end of the compressor to send heat to the water-fluorine condenser, the water-fluorine condenser generates a heat source, after the heat source releases heat in the water-fluorine condenser, low-temperature gaseous refrigerant flows into the water-fluorine evaporator, the water-fluorine evaporator generates a cold source, after the heat is absorbed by the water-fluorine evaporator, the gaseous refrigerant flows back to the variable frequency compressor, and the next compression operation is repeated;
s20, the water-fluorine condenser provides heat for the drying heater: the heat source generated by the water-fluorine condenser is output from a water outlet of the water-fluorine condenser, hot water is input into a drying heating water inlet to provide high-temperature heat for the drying heater, and after the high-temperature heat is released by the drying heater, the hot water with reduced temperature is output from the drying heating water outlet and flows back to the water inlet of the water-fluorine condenser;
s30, the water-fluorine evaporator provides cold for the dehumidifying condenser: the cold source generated by the water-fluorine evaporator is output from the water outlet of the water-fluorine evaporator, cold water is input into the dehumidification condensation water inlet to provide low-temperature cold energy for the dehumidification condenser, and after the low-temperature cold source absorbs heat from high-temperature humid air output by the fermentation bin, cold water with increased temperature is output from the dehumidification condensation water outlet and flows back to the water inlet of the water-fluorine evaporator;
s40, the high-temperature humid gas in the fermentation bin forms convection under the action of a booster fan, the gas is output from an air outlet of the fermentation bin, passes through a dehumidifying condenser, suddenly meets cold to form water, reduces the humidity, passes through a dehumidifying air channel on the outer wall of the fermentation bin, passes through a drying heater, is heated and dried by the drying heater, and then is dispersed into the fermentation bin from an air inlet of the fermentation bin to form air flow, condensed water drops formed by the dehumidifying condenser flow to the lowest part of the air channel along the dehumidifying air channel under the action of gravity and the air flow, and is discharged from a condensed water outlet;
and repeating the step S40 to form a cyclic process of condensing the output gas and heating the input gas of the fermentation bin, and continuously condensing and drying the gas in the fermentation bin, so that the moisture in the fermentation bin is discharged in a condensing mode.
8. The method according to claim 7, wherein in the process of S40, the fermentation chamber is ventilated with the outside by controlling the external circulation ventilation actuator to open the external circulation ventilation door.
9. The method of claim 7, wherein in the S40 process, the operating frequency of the inverter compressor is controlled according to the temperature difference between the drying temperature sensor and the condensing temperature sensor, and the dew point forming parameter is adjusted, so as to control the output power of the water-water air energy heat pump, and thus control the temperature difference between the drying heater and the dehumidifying condenser.
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| CN112441850A (en) * | 2020-12-10 | 2021-03-05 | 广州中嘉装备科技有限公司 | Drying and fermenting device for organic fertilizer |
| CN112934918A (en) * | 2021-02-04 | 2021-06-11 | 智旅环保科技(上海)有限公司 | Safe biological digestion method for kitchen wet garbage |
| CN114485093B (en) * | 2022-02-17 | 2023-01-13 | 季华恒一(佛山)半导体科技有限公司 | Drying system, method and equipment of drying machine, storage medium and drying machine |
| CN115562128A (en) * | 2022-11-03 | 2023-01-03 | 格瑞环保科技(深圳)有限公司 | Intelligent control system for multi-effect high-temperature overlapping type drying of garbage |
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