KR20160134253A - Separable heat pump type drying apparatus and System for treatment of food waste in an apartment house using the apparatus - Google Patents

Separable heat pump type drying apparatus and System for treatment of food waste in an apartment house using the apparatus Download PDF

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Publication number
KR20160134253A
KR20160134253A KR1020150067997A KR20150067997A KR20160134253A KR 20160134253 A KR20160134253 A KR 20160134253A KR 1020150067997 A KR1020150067997 A KR 1020150067997A KR 20150067997 A KR20150067997 A KR 20150067997A KR 20160134253 A KR20160134253 A KR 20160134253A
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South Korea
Prior art keywords
heat exchanger
air
temperature heat
food
space
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KR1020150067997A
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Korean (ko)
Inventor
박경식
박지환
박승환
이주열
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코리아워터텍 주식회사
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Priority to KR1020150067997A priority Critical patent/KR20160134253A/en
Publication of KR20160134253A publication Critical patent/KR20160134253A/en

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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
    • B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
    • B09B5/00—Operations not covered by a single other subclass or by a single other group in this subclass
    • 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
    • F26B21/004—Nozzle assemblies; Air knives; Air distributors; Blow boxes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B23/00—Heating arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B23/00—Heating arrangements
    • F26B23/001—Heating arrangements using waste heat
    • F26B23/002—Heating arrangements using waste heat recovered from dryer exhaust gases
    • F26B23/004—Heating arrangements using waste heat recovered from dryer exhaust gases by compressing and condensing vapour in exhaust gases, i.e. using an open cycle heat pump system
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • 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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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Sustainable Development (AREA)
  • Microbiology (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

Temperature heat exchanger and the high-temperature heat exchanger, the air existing in the drying space flows into the high-temperature heat exchanger, so that the amount of the heat-exchanged air with the refrigerant in the high-temperature heat exchanger can be controlled, The present invention relates to a separate type heat pump drying apparatus for improving the performance of a drying apparatus by increasing the use temperature of air for drying by performing heat exchange in a temperature range higher than the temperature of air discharged from a heat exchanger.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a separate heat pump type drying apparatus and a system for treating a food waste in an apartment house using the same,

The present invention relates to a separate type heat pump drying apparatus and a system for treating food in a dwelling house using the same, and more particularly, to a separate type heat pump drying apparatus capable of efficiently drying food and preventing odor generation and condensation, Processing system.

The heat pump includes a compressor, a condenser, an expansion unit, an evaporator, and a refrigerant pipe connecting the refrigerant pipe and the refrigerant pipe, and is a device for transferring heat from a low-temperature material or space to a high-temperature material or space.

When the refrigerant is circulated by applying power to the compressor, the condenser serves as a high temperature heat exchanger for converting the refrigerant from the gas to the liquid at a high pressure, and the evaporator serves as a low temperature heat exchanger .

In the dryer to which the heat pump is applied, the air circulates along a pipe-shaped wind path and flows into the drying space independent of the wind direction to absorb moisture, or the process of separating the condensed water from the air that absorbs moisture is repeatedly performed do. Of course, the air exchanges heat between the refrigerant flowing through the heat pump and the high temperature heat exchanger and the low temperature heat exchanger.

However, when the low-temperature heat exchanger and the high-temperature heat exchanger are arranged in series on the air-flow direction and the air flow rate equal to the air flow rate through the low-temperature heat exchanger flows into the high-temperature heat exchanger, the air cooled by the low- There is a problem in that the energy efficiency is lowered because it must be heated again by using a heater.

Also, since the condensation temperature of the refrigerant in the high-temperature heat exchanger is limited to a maximum of 50 ° C and the condensate in the low-temperature heat exchanger is not frozen, the temperature range of the air is limited to 0 ° C to 50 ° C. The air temperature is limited to the upper and lower limits at the same time so that the maximum temperature of the air discharged from the drying space is limited to 25 ° C.

Korean Patent Registration No. 10-1371425 (Title of the invention: a system for food resource recycling of apartment houses and a method of recycling food resources using the same), March 3, 2014

The object of the present invention is to eliminate the air flow connecting the low-temperature heat exchanger and the high-temperature heat exchanger so that the air existing in the drying space flows into the high-temperature heat exchanger, thereby controlling the amount of air exchanged with the refrigerant in the high- In addition, it is another object of the present invention to provide a separate type heat pump drying apparatus in which the performance of the drying apparatus is improved by increasing the use temperature of the air for drying by performing heat exchange in a temperature range higher than the temperature of the air discharged from the low temperature heat exchanger.

Another object of the present invention is to improve the performance of a low-temperature heat exchanger for cooling air and condensing water vapor in order to condense water vapor contained in humid air. In order to improve the performance of the low-temperature heat exchanger, The present invention provides a economical separation type heat pump drying apparatus which improves the power efficiency of the compressor by reducing the cooling load of the low temperature heat exchanger and reducing the heating load of the high temperature heat exchanger by exchanging the air with the third heat exchanger .

Another problem to be solved by the present invention is to provide a separate type heat pump drying apparatus having high energy efficiency by recycling the stored energy while solving the problem of stopping the operation of the compressor due to accumulation of the compressor power in the refrigerant in the heat pump dryer.

Another problem to be solved by the present invention is to devise a method of installing all the devices in a single closed space so as to fundamentally block the generation of odors generated at all stages of separating and drying the food in the apartment house, The present invention provides a system for processing food in a dwelling house using a separate type heat pump drying device that can be installed in a dwelling house.

Another problem to be solved by the present invention is to provide a separate type heat pump which is combined with a solid-liquid separator and a dryer in a single unit and installed as a housing facility in a basement, And to provide a system for processing food in a dwelling house using a drying device.

Another problem to be solved by the present invention is to prevent the dried food from being finally absorbed by moisture and to prevent the moisture from being absorbed again, and to easily dry, The present invention provides a system for processing food in a dwelling house using a separate type heat pump drying apparatus which is easily utilized as a resource.

According to an aspect of the present invention, there is provided a refrigeration cycle apparatus including a compressor, a high temperature heat exchanger, an expansion unit, a low temperature heat exchanger, and a refrigerant pipe. When the refrigerant is circulated by applying power to the compressor, Wherein the heat exchanger discharges heat to the surroundings, the low temperature heat exchanger through which the low pressure refrigerant passes, the heat pump unit absorbing the ambient heat; A container in which at least a part of the high temperature heat exchanger and the low temperature heat exchanger are disposed in the drying space, the drying space being closed so that the internal air does not flow out; And an air blowing unit having a first blower and a second blower installed in the high temperature heat exchanger and the low temperature heat exchanger, respectively, wherein the air inlet of the high temperature heat exchanger is directly connected to the air outlet of the low temperature heat exchanger And the high temperature heat exchanger sucks air in the drying space having a temperature higher than the temperature of the air discharged from the low temperature heat exchanger to heat the sucked air while exchanging heat with the high pressure refrigerant, And the low temperature heat exchanger sucks the air in the drying space to heat exchange with the low pressure refrigerant to cool the sucked air while drying the mixture in the drying space.

According to another aspect of the present invention, there is provided a food waste disposal apparatus, comprising: a food discharge unit disposed in a sink of an individual household for discharging a mixture of food and wash water into an outer space of an individual household; A solid-liquid separation unit for separating food from the mixture discharged from the food discharge unit; And a separable heat pump drying apparatus for drying the food separated in the solid-liquid separation unit, wherein the salt component is removed from the food before the food is introduced into the separable heat pump drying apparatus And provides a housing house food processing system.

According to another aspect of the present invention, there is provided a food waste disposal apparatus, comprising: a food discharge unit disposed in a sink of an individual household for discharging a mixture of food and wash water into an outer space of the individual household; A transfer unit for transferring the mixture discharged by the food waste discharging unit to the basement of the apartment house; A container installed in the basement and connected to the transfer unit to maintain a closed state so that the inside air of the drying space does not flow out to the outside while forming a drying space therein; A solid-liquid separation unit disposed in the container and separating the mixture transferred by the transfer unit into the food and the washing water, and discharging the separated washing water to the outside of the container; The heat pump unit includes a compressor, a high temperature heat exchanger, an expansion unit, a low temperature heat exchanger, and a refrigerant pipe. When the refrigerant is circulated by applying power to the compressor, the high temperature heat exchanger, And the low-temperature heat exchanger through which the low-pressure refrigerant passes, condenses the water vapor into condensed water to dry the food.

Effects of the separate type heat pump drying apparatus and the apartment house food treatment system using the same according to the present invention are as follows.

First, the separate type heat pump dryer according to the present invention separates the high-temperature heat exchanger and the low-temperature heat exchanger so that the temperature of the air in the drying space is made higher when the air is independently contacted with the air without interference, There is an advantage of making a separate type heat pump dryer with higher drying efficiency.

Second, a heat pump drying device is mounted, which is equipped with a third heat exchanger that performs heat exchange with air to be cooled by using the air cooled in the low temperature heat exchanger, thereby improving the cooling efficiency and separating more condensed water, There is an advantage of making a pump drying device.

Third, during the air circulation process of the heat pump drying apparatus, the energy of the compressor accumulated in the refrigerant is discharged to the outside, or the water is used as the energy for the secondary drying or the water is heated using the water-cooled heat exchanger, In addition to preventing breakdowns, there is an advantage of making a dwelling unit food handling system using a separate heat pump drying unit that recycles compressor power energy.

Fourth, when the food is dried by the evaporation method using the heat pump, since the inside air of the drying unit does not flow out to the outside, the odor is not generated and steam is not discharged, So that it is advantageous to make a system for processing food in the apartment house using a separate type heat pump dryer.

Fifth, it collects food from apartment houses around 100 households quickly and conveniently, and uses a heat pump dryer to automatically and continuously dry food without odor. There is an advantage of making a system for processing food in a unit of a house by using a separate type heat pump dryer that provides a comfortable and convenient residential environment to residents.

Sixth, it is easy to use the dry food with salt removed as a good quality resource, and it is packed in a plastic bag that is convenient for the residents of the apartment building to absorb the moisture. There is an advantage to utilize. In particular, when dried food is used as fuel for power plants, it has the advantage of preventing global warming by using it as renewable energy with carbon credits.

1 is a block diagram of a first embodiment of a heat pump drying apparatus according to the present invention.
2 is a block diagram of a second embodiment of a heat pump drying apparatus according to the present invention.
3 is a view showing a third heat exchanger provided in the first embodiment of the heat pump drying apparatus according to the present invention.
FIG. 4 is an exploded perspective view of the main portion of the third heat exchanger of FIG. 3; FIG.
5 is a view showing a second embodiment of a heat pump drying apparatus according to the present invention.
FIG. 6 is a view illustrating a process of introducing the air in the drying space into the third heat exchanger in the heat pump drying apparatus of FIG. 5;
FIG. 7 is a view illustrating a process in which air passing through the low temperature heat exchanger in the heat pump drying apparatus of FIG. 5 flows into the third heat exchanger.
FIG. 8 is a view showing a configuration of a system for processing food in a dwelling house using the separate type heat pump drying apparatus according to the present invention.
FIG. 9 is a view showing a state in which the recesses provided in the apartment house food processing system of FIG. 8 are installed inside the container.
FIG. 10 is a view showing a solid-liquid separating apparatus provided in the apartment house food processing system of FIG.
11 is a sectional view of the dewatering device provided in the dwelling house food processing system of Fig.

Hereinafter, preferred embodiments of the present invention in which the above-mentioned problems to be solved can be specifically realized will be described with reference to the accompanying drawings. In describing the embodiments, the same names and the same symbols are used for the same configurations, and additional description therefor will be omitted below.

1, a first embodiment of a separate type heat pump drying apparatus according to the present invention will be described.

The separate type heat pump drying apparatus includes a heat pump unit, a vessel 10, a blowing unit 150, and an evaporation unit.

The heat pump unit includes a compressor 140, a high temperature heat exchanger 110, an expansion unit 120, a low temperature heat exchanger 130, and a refrigerant pipe. When the compressor (140) is energized to circulate the refrigerant, the high temperature heat exchanger (110) passing the high pressure refrigerant dries the mixture placed in the evaporation unit while discharging heat to the surroundings. Further, the low-temperature heat exchanger 130 through which the low-pressure refrigerant expanded at a low pressure through the expansion unit 120 is absorbed by the surrounding heat. Here, the expansion unit 120 may be any type as long as it can expand the refrigerant, such as an expansion valve and an expansion capillary tube.

The container 10 forms a closed drying space so that the internal air does not flow out. At least a portion of the high temperature heat exchanger (110) and the low temperature heat exchanger (130) are disposed in the drying space.

The blowing unit 150 includes a first blower 151 installed in the high temperature heat exchanger 110 and a second blower 153 installed in the low temperature heat exchanger 130.

The evaporation unit is installed in an inner space of the container 10, and in this embodiment, a conveyor belt 170 is used as the evaporation unit. The conveyor belt 170 is disposed in the drying space, and the mixture is dried by the air inside the drying space while the mixture moves.

The conveyor belt 170 may include a first conveyor belt 171 and a second conveyor belt 170 arranged in the vertical direction. Here, the falling portion of the first conveyor belt 171 does not deviate from the upper surface of the second conveyor belt 173 so that the falling matter on the first conveyor belt 171 falls on the upper portion of the second conveyor belt 173 .

A plurality of conveyor belts 170 are installed in a plurality of layers and the upper surfaces of the plurality of conveyor belts are sequentially moved in opposite directions so that the mixture is sequentially placed on the conveyor belts And the evaporation is promoted by contacting with air while moving to the conveyer belt located at the lower part.

The conveyor belt 170 may be rotated using a chain, and the upper surface of the conveyor belt may be made of Teflon so that the dried mixture is not attached.

Of course, the evaporation unit may be a fixed type device such as a shelf or a string, and the mixture may be placed on a shelf or hanging on a line and blowing with a blower to cause evaporation.

Further, as shown in FIG. 2, stirring means 160 for stirring the mixture in the drying space may be used as the evaporation unit. Here, the drying space formed inside the vessel 10 has a semicircular shape in its lower part to enhance the stirring effect.

The agitating means (160) includes a stirring blade (161) for moving the mixture upward to fit the semi-circular drying space and promoting the evaporation of moisture contained in the mixture by bringing the air into contact with air in the drying space, And a driver 163 for driving the motor 161.

Of course, the present invention is not limited to this, and various stirring means for contacting the mixture with air such as a chain, a multi-stage stirrer, and a horizontal stirrer may be used as the evaporating unit.

The air inlet of the high temperature heat exchanger 110 is not directly connected to the air outlet of the low temperature heat exchanger 130 but is opened to the drying space. Therefore, the high temperature heat exchanger 110 sucks air in the drying space having a temperature higher than the temperature of the air discharged from the low temperature heat exchanger 130, thereby exchanging heat with the high pressure refrigerant.

The separate type heat pump drying apparatus according to the present embodiment includes a high-temperature heat exchanger 110 and a low-temperature heat exchanger 130 in a drying space formed of a hermetically sealed container separating outside air and internal air, Since they are installed separately and independently, they can be in contact with air without being interfered with each other.

Therefore, since the air introduced into the high temperature heat exchanger 110 is not limited to the air discharged from the low temperature heat exchanger 130, the temperature of the air used in the heat exchange in the high temperature heat exchanger 110 is lower than the temperature of the low temperature heat exchanger Which is higher than the temperature of the air discharged from the discharge port 130.

As a result, when the high-temperature heat exchanger 110 and the low-temperature heat exchanger 130 are separated from each other and independently contacted with the air without interference, the temperature of the air in the drying space is made higher, So that the drying efficiency is improved.

Specifically, the maximum amount of water vapor that can be absorbed according to temperature is defined as shown in Table 1, and the amount of water vapor actually contained is referred to as absolute humidity and the ratio of maximum water vapor amount is referred to as relative humidity. Any excess steam will condense and become condensate.

Relationship between air temperature and maximum water vapor amount Temperature (℃) Water vapor (g / m 3 ) Temperature (℃) Water vapor (g / m 3 ) Temperature (℃) Water vapor (g / m 3 ) Temperature (℃) Water vapor (g / m 3 ) 0 4.8 25 23.0 50 82.8 75 240 5 6.8 30 30.3 55 104 80 291 10 9.4 35 39.6 60 130 85 350 15 12.8 40 51.1 65 160 90 418 20 17.2 45 65.3 70 197 95 498

As shown in Table 1, if the temperature of the air discharged from the drying space can be increased from 25 ° C to 40 ° C, the maximum water vapor amount is increased by 2.22 times from 23.0 g / m 3 to 51.1 g / m 3 , And the performance of the drying apparatus is improved.

If the heat exchange area of the high temperature heat exchanger 110 and the amount of air flowing into the high temperature heat exchanger 110 are increased in proportion to the temperature of the air in the drying space, The evaporation rate of water can be further improved.

The high temperature heat exchanger 110 includes a first high temperature heat exchanger 111 for heating the air inside the drying space and a second high temperature heat exchanger 113 for discharging heat to the outside of the container 10 .

The first high temperature heat exchanger 111 may supply the drying energy to the mixture flowing into the drying space to evaporate water present in the mixture. The heat discharged from the second high temperature heat exchanger (113) can be recycled by a separate energy recovery means.

For example, the second high temperature heat exchanger 113 is provided as a water-cooled heat exchanger, and hot water can be secured through the water-cooled heat exchanger.

Since the heat pump drying apparatus circulates the air in the drying space, the power supplied from the outside to the compressor 140 is not discharged to the outside, and the refrigerant is accumulated in the circulating refrigerant, so that the operation of the compressor is interrupted. The first high temperature heat exchanger 111 is installed in the drying space to heat the air to be used as drying energy and the second high temperature heat exchanger 113 is installed outside the drying space to discharge the energy to the outside .

The energy discharged to the outside of the drying space through the second high temperature heat exchanger (113) can be utilized as drying energy of a vacuum dryer or a hot air dryer. By using this dryer, the residual moisture of the primary dried mixture in the heat pump apparatus is reduced to 2 Tea drying may improve the drying effect.

The second high temperature heat exchanger (113) can be installed in series or in parallel with the first high temperature heat exchanger (111), and an automatic valve is provided in the refrigerant pipe connected to the second high temperature heat exchanger If the pressure of the refrigerant pipe exceeds a certain level, the automatic valve is opened to discharge the refrigerant to the second high temperature heat exchanger (113) to release energy. When the pressure of the refrigerant pipe becomes low, There will be.

Of course, the present invention is not limited to this, and an outdoor unit of the separate type air conditioner may be used as the high temperature heat exchanger 110, and an indoor unit of the separate type air conditioner may be used as the low temperature heat exchanger 130. Specifically, the outdoor unit of the separate type air conditioner may be used as the first high temperature heat exchanger 111, and the indoor unit of the separate type air conditioner may be used as the low temperature heat exchanger 130. The first high-temperature heat exchanger 111 may be an air-cooling type heat exchanger, and the second high-temperature heat exchanger 113 may be a water-cooling type heat exchanger.

The heat pump unit further includes a third heat exchanger (200) for exchanging heat between air introduced from the drying space and air discharged from the low temperature heat exchanger.

3 and 4, a first embodiment of the third heat exchanger will be described.

The third heat exchanger 200 includes a heat exchange body 230, an air inlet 241 for allowing the air in the drying space to flow into the heat exchange body 230, A first low temperature heat exchanger connection part 243 for guiding air introduced into the air inflow part 241 to the low temperature heat exchanger 130, And a second low temperature heat exchanger connection part 244 for allowing the air discharged from the low temperature heat exchanger 130 to flow into the heat exchange main body 230.

Here, both the air inlet portion 241 and the air outlet portion 242 are opened in the drying space.

The heat exchange body 230 includes an outer case 220 forming an inner heat exchange space and a plurality of flow path forming members 210 forming a first flow path through the heat exchange space.

Air flowing into the heat exchange body (230) flows in the drying space and air discharged from the low temperature heat exchanger (130) flows into the heat exchange space.

The heat exchange case includes a front plate 221, a rear plate 222, a top plate 224, a bottom plate 223, first and second side plates 225 and 226, The first flat plate 227 and the second flat plate 228.

The first flat plates 227 are spaced apart from the front plate 221 by a predetermined distance and the second flat plates 228 are spaced apart from the front plate 222 by a predetermined distance.

Each of the first flat plate 227 and the second flat plate 228 has a plurality of first through holes and second through holes for providing the plurality of flow path forming members 210.

The flow path forming member 210 is made of a metal pipe, one side of which is held in the first through hole and the other side of which is fitted in the second through hole.

The first space defined by the first flat plate 127 and the front plate 221 is partitioned into a plurality of first unit spaces between the front plate 221 and the first flat plate 227 The first partition member 229 is disposed. Similarly, a second space formed by the second flat plate 228 and the rear plate 222 is divided into a plurality of second unit spaces between the rear plate 222 and the second flat plate 228, The partition member 229a is disposed.

Here, one end of the flow path forming member 210 is opened in the first space, and the other end of the flow path forming member 210 is opened in the second space. Here, the first partition member 229 and the second partition member 229a are disposed at a height from each other with respect to the ground.

As a result, since the first partition member 229 and the second partition member 229a are alternately disposed at different heights with respect to the paper surface, the air introduced into the flow path forming member flows into the first unit space And the second unit space, and the air moving through the flow path forming member performs heat exchange with the air moving in the heat exchange space.

The air inlet portion 241 is formed in the front plate 221 and the air inlet portion 241 is in communication with the flow passage forming member 210. The rear plate 222 is formed with the first low temperature heat exchanger connection portion 243 and communicates with the flow path forming member 210.

The lower plate 223 is formed with the air discharge unit 242 and the air discharge unit 242 is in communication with the heat exchange space. The upper plate 224 is formed with the second low-temperature heat exchanger connection portion 244 and communicates with the heat exchange space.

Of course, the present invention is not limited to this, and the air discharge portion 242 and the second low-temperature heat exchanger connection portion 244 may be installed on the side plate so long as they are in communication with the heat exchange space.

Therefore, the air introduced into the air inlet portion 241 flows into the low temperature heat exchanger via the first low-temperature heat exchanger connecting portion 243 after passing through the flow path forming member 210. On the other hand, the air discharged from the low temperature heat exchanger passes through the heat exchange space through the second low temperature heat exchanger connecting portion 244, and then is discharged to the drying space through the air outlet. As a result, the air flowing through the heat exchange space and the air flowing along the inner space of the flow path forming member 210 undergo heat exchange with each other.

It is needless to say that the present invention is not limited thereto, and the air inlet and the air outlet are connected to the low temperature heat exchanger, and the connection portion of the first low temperature heat exchanger and the connection portion of the second heat exchanger are opened It is possible.

When the air introduced into the low-temperature heat exchanger 130 and the air exhausted from the low-temperature heat exchanger are exchanged with each other using the third heat exchanger, the air to be cooled is sufficiently cooled before entering the low-temperature heat exchanger, Temperature heat exchanger, and the air discharged from the low-temperature heat exchanger is heated while passing through the third heat exchanger and discharged into the drying space, thereby reducing the heating load of the high-temperature heat exchanger.

Specifically, as shown in Table 2, when the energy efficiency of the third heat exchanger is compared with the energy efficiency of the third heat exchanger, the drying efficiency is much improved when the third heat exchanger is installed.

In Table 2 below, the results of drying are plotted and the effects are compared when the air passing through the low temperature heat exchanger has a temperature of 25 ° C / humidity of 60% and an air temperature of 25 ° C / humidity of 40%. Here, it is assumed that the specific heat of air is 1 kJ / m 3 , the latent heat of steam is 2.25 kJ / g, the coefficient of performance (COP) of the heat pump is 3.3 and the heat exchanging temperature difference of air is within 5 ° C. Respectively.

Comparison of Efficiency with and without a Third Heat Exchanger Example 1 Temperature (℃) Humidity(%) Water vapor (g / m 3 ) 5 ° C Condensation (g / m 3 ) Compressor work (kj) Dry energy (kcal) Remarks If there is no third heat exchanger 25 60 13.8 7.0 10.7 364.8 25 40 9.2 2.4 7.6 756.0 If there is a third heat exchanger 25 60 13.8 7.0 6.2 211.7 25 40 9.2 2.4 3.1 309.5

As a result, when the air temperature is 25 ° C / humidity 60%, the drying energy used for drying 1 kg of water is 211.7 kcal / kg in the case of the third heat exchanger, and 364.8 kcal / kg, the energy efficiency of the third heat exchanger is 1.72 times higher than that of the third heat exchanger.

When the air temperature is 25 ° C / humidity is 40%, the drying energy used for drying 1 kg of water is 309.5 kcal / kg in the case of the third heat exchanger, and 756.0 kcal / kg. Therefore, when the third heat exchanger is provided, the energy efficiency of the second heat exchanger is 2.44 times higher than that of the third heat exchanger.

On the other hand, in Table 3 below, the results of drying are plotted and the effects are compared when the air passing through the low-temperature heat exchanger has a temperature of 40 ° C / humidity of 60% and an air temperature of 40 ° C / humidity of 20% .

Comparison of Efficiency with and without a Third Heat Exchanger Example 2 Temperature (℃) Humidity(%) Water vapor (g / m 3 ) 5 ° C Condensation (g / m 3 ) Compressor work (kj) Dry energy (kcal) Remarks If there is no third heat exchanger 40 60 30.7 23.9 26.6 263.5 40 20 10.2 3.4 12.8 891.7 If there is a third heat exchanger 40 60 30.7 23.9 17.6 175.7 40 20 10.2 3.4 3.8 265.1

As a result, when the air temperature is 40 ° C / humidity 60%, the drying energy used for drying 1 kg of water is 175.7 kcal / kg in the case of the third heat exchanger, and 263.5 kcal / kg, the energy efficiency of the third heat exchanger is 1.5 times higher than that of the third heat exchanger.

When the air temperature is 40 ° C / humidity is 20%, the drying energy used for drying 1 kg of water is 265.1 kcal / kg when the third heat exchanger is present, but 891.7 kcal / kg, the energy efficiency of the third heat exchanger is 3.36 times higher than that of the third heat exchanger.

In the first experimental example and the second experimental example, even when the third heat exchanger is provided, the drying energy used for drying 1 kg of water is 211.7 kcal / kg when the air temperature is 25 ° C / humidity 60% And 175.7 kcal / kg when the air temperature is 40 ° C / 60% humidity, the higher the temperature of the air to be exchanged, the better the energy efficiency.

5 to 7, a second embodiment of the third heat exchanger provided in the separate type heat pump drying apparatus according to the present invention will be described as follows.

The third heat exchanger 300 according to this embodiment has the same function as the third heat exchanger according to the first embodiment but has a structural difference.

The third heat exchanger 300 includes a heat exchange body 330, an air inlet 310 through which the air in the drying space flows into the heat exchange body 330, A first low temperature heat exchanger connection part 340 for guiding the air introduced into the air inflow part 310 to the low temperature heat exchanger 130, And a second low temperature heat exchanger connection part 350 for allowing the air discharged from the low temperature heat exchanger 130 to flow into the heat exchange main body 330.

The heat exchange body 330 includes a plurality of flat plates (not shown) disposed at regular intervals and a blocking member (not shown) disposed between adjacent two flat plates to block the outer edges between the flat plates .

The blocking member is opened in a diagonal direction to constitute an air passage with the flat plate, and air passages adjacent to each other are arranged so as to be staggered from each other, and a passage of hot air and a passage of low temperature air are sequentially arranged to perform heat exchange.

The third heat exchanger (300) is provided as a plate type heat exchanger. Each of the third and fourth heat exchangers (300) is provided with an air passageway at the upper and lower portions thereof. When the low temperature heat exchanger is connected to the lower air passageway, condensed water condensed with steam is easy to process.

8 to 11, a description will be given of a system for processing food in a apartment house according to the present invention.

The apartment house food processing system includes a food discharge unit 1, a transfer unit 3, a solid-liquid separation unit 400, and a heat pump drying device. Here, the heat pump drying apparatus includes an evaporation unit 600, a heat pump unit 100, and a container 10.

The food waste discharging unit 1 is disposed in an individual household sink and discharges a mixture of food and wash water into the external space of the individual household.

The transfer unit 3 transfers the mixture discharged by the food waste discharging unit 1 to the basement of the apartment house.

The solid-liquid separation unit (400) separates food from the mixture discharged from the food discharge unit (1). That is, the solid-liquid separation unit 400 separates the mixture, which is disposed inside the container and transferred by the transfer unit 3, into the food and the washing water, and the separated washing water is separated from the outside of the container 10 .

The solid-liquid separation unit 400 includes a charging hopper 410 capable of holding the mixture, a plurality of wires 420 disposed at a predetermined interval below the charging hopper 410, And a wire support member 430 for maintaining the interval of the wire support member 430 constant.

If the mixture is contained in the feeding hopper 410, the washing water passes through the wire 420 at a distance between the wires 420, and the food remains on the wires 420. The wire 420 is wound on the wire driving unit 440 to move the food to the outside of the loading hopper 410.

The solid-liquid separation unit 400 further includes a dehydrator 500 for removing the washing water remaining in the food, and the dehydrator 500 includes a case 510, A pressing motor 520 for applying pressure to the food, a driving motor 540 for driving the pressing means, and a separation net 530 for retaining the food and allowing the washing water to pass therethrough.

The pressing unit 520 includes a screw that presses the food while rotating, and at least a part of the screw is disposed in the inner space of the separation net 530.

The width of the inner space on the outlet side is smaller than the width of the inner space on the inlet side with respect to the direction in which the food is moved in the inner space of the separation net 530.

The salt component is removed from the food before the food is introduced into the evaporation unit 600 of the separable heat pump dryer.

The container 10 is installed in the basement and is connected to the transfer unit 3 so as to form a drying space therein and to keep the inside of the drying space in a closed state so as to prevent the inside air from flowing out to the outside.

The heat pump unit 100 includes a compressor 140, a high temperature heat exchanger 110, an expansion unit, a low temperature heat exchanger 130, and a refrigerant pipe. The high-temperature heat exchanger (110), through which the high-pressure refrigerant passes, heats the air contained in the food by evaporating the water in the drying space with water vapor while the low-temperature refrigerant passes through the low- The heat exchanger 130 condenses the steam into condensed water to dry the food.

In order to prevent the odor inside the container 10 from flowing out of the container 10, the pressure of the internal space of the container 10 is lower than the pressure of the external space of the container 10 And a pressure regulating unit (not shown) for maintaining a low pressure. For example, the pressure inside the container 10 can be lowered by sucking the inside air of the container 10 using a blowing fan as the pressure regulating unit and discharging the air to the outside of the cellar.

In addition, the apartment house food treatment system further includes a packaging unit (not shown) installed in the container 10 and packed in a plastic bag so that the dry food and the dried food do not absorb water vapor. Here, the bag can be sealed by a zipper which is glued or attached with a high-temperature adhesive.

It is needless to say that the present invention is not limited to this, and it is also possible to use a device for discharging dry food and beverage in the evaporation unit 600, a vertical moving device for moving the dried food and beverage discharged from the discharge device to the food storage hopper 820, Device 810. < RTI ID = 0.0 >

Here, the dried foodstuffs stored in the plastic bag are taken out of the container and used as fuel, feed, fertilizer and the like. In particular, when used as a fuel, the dry food is made into pellets and used as boiler fuel.

As described above, the present invention is not limited to the above-described specific preferred embodiments, and various changes and modifications may be made by those skilled in the art without departing from the scope of the present invention as claimed in the claims. And such variations are within the scope of the present invention.

1: food discharge unit 3: transfer unit
10: vessel 100: heat pump unit
110: high temperature heat exchanger 120: expansion unit
130: low temperature heat exchanger 150: blowing unit
160: stirring means 171: first conveyor belt
173: second conveyor belt 200, 300: third heat exchanger
400: solid-liquid separation unit 500: dehydrator
600: Evaporating unit 700: Packing unit

Claims (17)

The high-temperature heat exchanger, through which the high-pressure refrigerant passes, discharges heat to the surroundings. When the high-pressure refrigerant passes through the low-pressure refrigerant, the high-temperature heat exchanger The low-temperature heat exchanger includes a heat pump unit for absorbing heat in the vicinity thereof;
A container in which at least a part of the high temperature heat exchanger and the low temperature heat exchanger are disposed in the drying space, the drying space being closed so that the internal air does not flow out; And,
And a blower unit having a first blower and a second blower installed in the high temperature heat exchanger and the low temperature heat exchanger, respectively,
Wherein the air inlet of the high temperature heat exchanger is not directly connected to the air outlet of the low temperature heat exchanger but is open to the drying space,
Wherein the high temperature heat exchanger sucks air in the drying space having a temperature higher than the temperature of the air discharged from the low temperature heat exchanger to heat the sucked air while exchanging heat with the high pressure refrigerant, Pressure refrigerant and sucking and cooling the sucked air by heat-exchanging with the low-pressure refrigerant to dry the mixture in the drying space. The method according to claim 1,
Wherein the heat exchange area of the high temperature heat exchanger and the amount of air flowing into the high temperature heat exchanger are increased in proportion to a temperature rise of the air inside the drying space. The method according to claim 1,
The high-temperature heat exchanger includes a first high-temperature heat exchanger for heating the air in the drying space, wherein the first high-temperature heat exchanger dries the mixture flowing into the drying space to evaporate water present in the mixture And the air is heated. The method of claim 3,
Wherein the high temperature heat exchanger includes a second high temperature heat exchanger for discharging heat to the outside of the vessel and the heat discharged from the second high temperature heat exchanger is recycled by a separate energy recovery means Device. The method according to claim 1,
Further comprising a third heat exchanger for exchanging heat between air introduced from the drying space and air discharged from the low temperature heat exchanger,
The third heat exchanger includes a heat exchange body, an air inflow part for allowing air in the drying space to flow into the heat exchange body, and an air discharge part for discharging the heat-exchanged air from the heat exchange body to the drying space,
Wherein the air inlet and the air outlet are all open on the drying space. 6. The method of claim 5,
The third heat exchanger includes a first low-temperature heat exchanger connecting portion for guiding the air introduced into the air inlet to the low-temperature heat exchanger, and a second low-temperature heat exchanger for introducing the air discharged from the low- Further comprising a connecting portion,
Wherein the heat exchange body includes a heat exchange outer case forming a heat exchange space formed therein, and a flow path forming member passing through the heat exchange space and forming a first flow path independent of the heat exchange space. 6. The method of claim 5,
Wherein the heat exchange body includes a plurality of flat plates disposed at regular intervals and a blocking member disposed between two neighboring flat plates,
The shielding member is opened in a diagonal direction so that the air ducts adjacent to each other constituting the air ducts together with the flat plate are arranged so as to be offset from each other and the passages of the hot air and the low temperature air are sequentially arranged, Device. The method of claim 3,
Wherein the high temperature heat exchanger includes a second high temperature heat exchanger for discharging heat to the outside of the container, wherein the first high temperature heat exchanger uses an air-cooling type heat exchanger, and the second high temperature heat exchanger uses a water- Separate heat pump dryer. The method according to claim 1,
Further comprising a conveyor belt disposed in the drying space and in which the mixture is placed, wherein the conveyor belt comprises a first conveyor belt and a second conveyor belt disposed in a vertical direction,
Wherein the falling portion of the first conveyor belt is disposed so as not to deviate from the upper surface of the second conveyor belt so that the falling matter on the first conveyor belt falls onto the upper portion of the second conveyor belt. The method according to claim 1,
The drying space further comprises agitating means for lowering the semi-circular drying space and moving the mixture upward to fit the semi-circular drying space and bringing the drying space into contact with air to promote evaporation of moisture contained in the mixture Wherein the heat pump is a heat pump. A food discharging unit disposed in a sink of an individual household for discharging a mixture of food and wash water to the outside space of the individual household;
A solid-liquid separation unit for separating food from the mixture discharged from the food discharge unit; And,
A separate type heat pump drying apparatus according to any one of claims 1 to 10 for drying the food separated in the solid-liquid separation unit,
Wherein the salt component is removed from the food before the food is introduced into the separable heat pump dryer. A food discharging unit disposed in a sink of an individual household for discharging a mixture of food and wash water to the outside space of the individual household;
A transfer unit for transferring the mixture discharged by the food waste discharging unit to the basement of the apartment house;
A container installed in the basement and connected to the transfer unit to maintain a closed state so that the inside air of the drying space does not flow out to the outside while forming a drying space therein;
A solid-liquid separation unit disposed in the container and separating the mixture transferred by the transfer unit into the food and the washing water, and discharging the separated washing water to the outside of the container; And,
A heat pump unit including a compressor, a high temperature heat exchanger, an expansion unit, a low temperature heat exchanger, and a refrigerant pipe,
When the compressor is circulated to circulate the refrigerant, the high-temperature heat exchanger through which the high-pressure refrigerant passes, evaporates moisture contained in the food while vaporizing the air in the drying space, and the low-temperature heat exchanger through which the low- Is condensed with condensed water to dry the food. 13. The method of claim 12,
Wherein the high temperature heat exchanger includes a first high temperature heat exchanger for heating internal air of the container and a second high temperature heat exchanger for discharging heat to the outside of the container, the second high temperature heat exchanger is provided as a water-cooled heat exchanger, And the hot water is secured through the heat exchanger. 13. The method of claim 12,
Wherein the solid-liquid separation unit includes a feed hopper capable of holding the mixture, a plurality of wires disposed at a predetermined interval below the hopper, and a wire support member for keeping the spacing of the wires constant, ,
When the mixture is contained in the feeding hopper, the washing water passes through the gap between the wires, the food remains on the wires, and the wire moves while moving the food to the outside of the loading hopper Household food processing system. 15. The method of claim 14,
Wherein the solid-liquid separation unit further comprises a dehydrator for removing the washing water remaining in the food, the dehydrator including a pressure means for applying pressure to the food, a separation net for allowing the food to remain,
Wherein the pressing means includes a screw for pressing the food while rotating. 13. The method of claim 12,
Further comprising a pressure regulating unit for maintaining the pressure of the inner space of the container lower than the pressure of the outer space of the container so that the odor inside the container does not leak out of the container Apartment house food processing system. 13. The method of claim 12,
And a packaging unit installed in the container and packed in a plastic bag so that the dried food and beverages dried by the food are not absorbed by water vapor, and the plastic bag is sealed with a zipper adhered or attached with a high- Household food processing system.
KR1020150067997A 2015-05-15 2015-05-15 Separable heat pump type drying apparatus and System for treatment of food waste in an apartment house using the apparatus KR20160134253A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110779322A (en) * 2019-10-30 2020-02-11 珠海格力电器股份有限公司 Control method of drying system and drying system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101371425B1 (en) 2013-10-28 2014-03-07 코리아워터텍 주식회사 System for resource conversion of food waste in an apartment house and method for resource conversion of food waste in an apartment house using the same

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101371425B1 (en) 2013-10-28 2014-03-07 코리아워터텍 주식회사 System for resource conversion of food waste in an apartment house and method for resource conversion of food waste in an apartment house using the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110779322A (en) * 2019-10-30 2020-02-11 珠海格力电器股份有限公司 Control method of drying system and drying system

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