KR101568785B1 - Interior Circulation Type Dehumidifier - Google Patents

Abstract

The present invention relates to an internal air circulation type dehumidifying device (100) for use in controlling internal humidity, comprising: a dehumidification rotor (110) for absorbing moisture in the introduced air; A condenser 120 installed in an air flow path to the dehumidification rotor 110 for condensing the refrigerant compressed at a high temperature and a high pressure by the compressor 122; An air supply fan (130) for supplying air to the inside of the dehumidification rotor (110) to discharge dehumidified air; A precooler 140 for cooling and dehumidifying air supplied from the air supply fan 130; And a heater (150) for heating the air passing through the precooler (140).
According to the present invention, since the internal air circulation type can efficiently cope with an instant load increase in a local area, workers can easily move and quickly dehumidify locally when Invar condensation occurs. In addition, since the dehumidifier and the heater are integrated, the period of non-use is reduced, thereby reducing the space requirement of the equipment.
In addition, it can be miniaturized and can be moved to a doorway and lightweight, so that it can be operated from a footrest installed at the inside of a cargo hold. It can be installed close to the dehumidifying space, so it can be used without any duct work and energy loss can be minimized. In addition, the operation cost can be reduced by using the waste heat in the dehumidifying operation to dry the rotor. In addition, by having various operation modes, the dehumidification efficiency can be increased.

Description

[0001] Interior Circulation Type Dehumidifier [

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an internal air recirculation type dehumidifying device, and more particularly, to an internal air recirculation type dehumidifying device for coping with an emergency situation that may occur due to a load change during a cargo hold construction.

In case of existing LNGC (Liquefied Natural Gas Carrier), in the process of cargo hold construction, outdoor and dehumidifying device is installed in Liquid Dome for humidity control. However, there is a problem in that the air discharged from the dehumidifier can not be smoothly supplied to a certain space due to the footrest and other equipment installed in the inside of the cargo hold. In addition, in the process, it is difficult to control such a local problem by only the outdoor dehumidifier.

That is, the dehumidifying device for the overall humidity control in the conventional cargo hold is difficult to appropriately cope with local environmental changes, and thus there is a problem that the number of times by invar emission is additionally generated.

For reference, various types of outdoor dehumidifiers such as spot cooler, pre-cooler + heating, desiccant dehumidifier, pre-cooler and rotor are often used for ship drying.

On the other hand, a dehumidifier having a heating function is disclosed in Korean Patent Publication No. 2005-0049953 (2005.05.27) (Patent Document 1) and Domestic Registered Utility Model No. 0442377 (Oct. 27, 2008) Lt; / RTI >

1 is a conceptual diagram of a conventional dehumidifier. 1, a conventional dehumidifier includes a cabinet 1 having a front surface and a bottom surface opened and an air intake port 2 formed on a rear surface thereof, a base 3 provided on the bottom surface of the cabinet 1, And a heat exchanger (14) disposed between the blower and the air inlet (2), the evaporator (12) and the condenser (14) A compressor 36 for compressing the refrigerant circulating through the evaporator 12 and the condenser 14 and an orifice 16 disposed in front of the heat exchanger 10 and sucking the dehumidified air, A fan housing 17 in which the blower is mounted and disposed in front of the orifice 16 and in which sucked air is discharged at a center of the front face of the fan housing 18 and a drain pan 18 , And a bucket (40) for collecting condensed water that has fallen in the drain pan (18) The.

A barrier 19 separating a mounting area of the compressor 36 and a receiving area of the bucket 40 is coupled to a lower portion of the cabinet 1 and a grill is mounted on the front surface of the cabinet 1, And a front panel on which a discharge port 33 is formed.

Korean Patent Publication No. 2005-0049953 (May 27, 2005) Domestic Registration Utility Model Bulletin No. 0442377 (October 27, 2008)

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above problems, and it is an object of the present invention to provide a dehumidifying device that temporarily operates in order to prevent or minimize air pollution when a dew condensation occurs on the surface of an Invar due to temporary fluctuation of ambient load during LNGC cargo- The present invention provides an internal air circulation type dehumidifying device that enables workers to easily move and quickly dehumidify in the event of Invar condensation.

According to an aspect of the present invention, there is provided an internal air recirculation type dehumidifying device used for internal humidity control, comprising: a dehumidification rotor for absorbing moisture in the introduced air; A condenser installed in an air flow path to the dehumidification rotor for condensing a refrigerant compressed at a high temperature and a high pressure in a compressor; An air supply fan for supplying air to the inside of the dehumidification rotor to discharge the dehumidified air; A precooler for cooling and dehumidifying air supplied from the air supply fan; And a heater for heating air passing through the precooler. In the summer dehumidifying operation mode, the precooler and the dehumidification rotor are operated to discharge air that has been cooled and dehumidified therein, The heater is operated to discharge air heated to the inside in the winter season driving mode and the air supply fan operates in the air blowing operation mode to circulate the inside air without adjusting the temperature and humidity, As shown in FIG.

Here, the dehumidification rotor can be dried using the waste heat of the condenser.

The dehumidifying rotor is a honeycomb structure formed of ceramics, and silica gel is impregnated therein to absorb moisture in air while rotating.

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In addition, it is possible to provide four or more wheels for movement and to be able to fix the wheels by a fixing device during operation of the dehumidifier.

The outer casing of the inner circulation air type dehumidifier may be provided with a thermal insulation sheet made of EPDM / silver nitrate ARTILON.

In addition, the exterior material of the internal circulating-air type dehumidifier may be treated with phosphoric acid after degreasing by a degreasing process.

The exterior material of the internal circulating-air type dehumidifier may be subjected to a coating treatment through a pretreatment, a priming with an epoxy primer, an intermediate with epoxy, and a top coat with urethane.

In addition, the driving deceleration motor of the dehumidifying rotor can be continuously operated and controlled in speed, and can be driven by a chain type.

In addition, a centrifugal fan is applied to the air supply fan, a BELL-MOUTH is installed in the air inlet for smooth air flow, and an inverter-type motor is used for controlling the air volume to be discharged.

The damper may include a damper for adjusting a blowing amount of the air flowing into the condenser, and may include a locking device and a graduated damper capable of detecting a degree of opening and closing of the damper so that the handle does not flow due to the degree of opening and closing of the damper.

In addition, the damper is provided with a filter, which is a reproducible FLAT and UNIT type, and the dust collection efficiency is 80% or more of AFI, and the frame material of the filter may be aluminum or stainless steel.

In addition, the compressor is a reciprocating compressor, and a reverse-phase prevention function is added thereto. A refrigerant R-22 is used, and a vibration-proof rubber may be mounted on the lower part to prevent vibration.

In addition, the heater is an AERO FIN type, and a temperature control function using a sensor capable of integrating a heating element and step-controlling according to temperature and preventing overheating can be incorporated.

In addition, an angle adjustable nozzle may be installed at a discharge port through which air is discharged.

According to the present invention, since the internal air circulation type can efficiently cope with an instant load increase in a local area, workers can easily move and quickly dehumidify locally when Invar condensation occurs. In addition, since the dehumidifier and the heater are integrated, the period of non-use is reduced, thereby reducing the space requirement of the equipment.

In addition, it can be miniaturized and can be moved to a doorway and lightweight, so that it can be operated from a footrest installed at the inside of a cargo hold. It can be installed close to the dehumidifying space, so it can be used without any duct work and energy loss can be minimized. In addition, the operation cost can be reduced by using the waste heat in the dehumidifying operation to dry the rotor. In addition, by having various operation modes, the dehumidification efficiency can be increased.

1 is a conceptual view of a conventional dehumidifier.
2 is an air flow diagram of an internal air recirculation type dehumidifier according to the present invention.
3 is a conceptual diagram of an internal air circulation type dehumidifying device according to the present invention.
4 is a perspective view of the internal air circulation type dehumidifier according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

FIG. 3 is a conceptual view of an internal air-circulation type dehumidifier according to the present invention, and FIG. 4 is a perspective view of an internal air-circulation type dehumidifier according to the present invention.

The internal air circulation type dehumidifying device according to the present invention is an air circulation type inside a cargo hold which does not have a separate exhaust of hot and humid air which is subjected to rotor dry (React line). Specifically, It is a dehumidifying device that operates temporarily for preventing or minimizing the bleeding when condensation occurs on the surface of the Invar. It is a technical point that the workers can easily move and quickly dehumidify in the event of Invar condensation. .

As shown in the drawing, the internal air-circulation type dehumidifier 100 according to the present invention includes a dehumidifying rotor 110, a condenser 120, an air supply fan 130, A cooler 140, and a heater 150.

The dehumidification rotor 110 performs a function of absorbing moisture in the introduced air. At this time, the dehumidification rotor 110 may be composed of a pre-cooler (P / C) and a desiccant rotor (D / H), specifically a ceramic honeycomb structure. And can perform a function of absorbing moisture in the air. The desiccant rotor 110 may be dried using the waste heat of the condenser 120 to reduce operating costs.

The condenser 120 is installed in an air flow path to the dehumidification rotor 110. The condenser 120 functions to condense a refrigerant compressed at a high temperature and a high pressure by a compressor 122, Change.

The air supply fan 130 functions to supply air to the inside of the dehumidifying rotor 110 to discharge the dehumidified air.

The precooler 140 serves as a heat exchanger for cooling and dehumidifying air supplied from the air supply fan 130 and for cooling and dehumidifying the heat exchanged air by evaporating refrigerant expanded by an expansion valve (not shown).

The heater 150 may be an electric heater or the like and heats the air passing through the precooler 140.

Reference numeral 101 denotes a jacket, 102 denotes a wheel, 103 denotes a damper, 105 denotes a filter, and 107 denotes a nozzle. &Quot; O.A "represents intake air," R.A "represents regeneration air, and" S.A "represents ejection air. In the present invention, since the internal air circulation type dehumidifying device 100 is provided inside, O.A and R.A are substantially the same.

The internal air recirculation type dehumidifier 100 according to the present invention has various operation modes such as a summer dehumidification operation mode, a winter season operation mode, an air flow operation mode, and the like in order to increase dehumidification efficiency.

First, in the summer dehumidifying operation mode, the precooler 140 and the dehumidification rotor 110 operate to discharge the air that has been cooled and dehumidified into the interior. In other words, the precooler 140 and the dehumidification rotor 110 are operated, and the air in the cargo hold is introduced, and the dehumidification rotor 110 is heated by the condenser 120 and then dried. After the dehumidification rotor 110 is dried, hot and humid air can not be discharged to the room. Therefore, it is cooled and dehumidified by the precooler 140, is again absorbed by the dehumidification rotor 110, and is supplied to the inside.

At this time, some air passing through the precooler 140 may be bypassed without being separately passed through the dehumidification rotor 110 to adjust the temperature appropriately.

In the winter season, the heater 150 is operated to regenerate the inflowing recirculated air after being heated.

In the air blowing operation mode, the air supply fan 130 is operated to discharge the inside air while circulating the inside air without adjusting the temperature and humidity.

In the discharge port through which the air is discharged from the internal air circulation type dehumidifier 100 according to the present invention, a nozzle 107 adjustable in the up, down, left, and right directions may be installed in order to appropriately adjust the air discharge direction.

Meanwhile, the internal air circulation type dehumidifier 100 according to the present invention has the following technical features.

1. exterior materials and frames ( CASING UNIT and COMMON FRAME )

1) The exterior material should be made of galvanized steel sheet (EGI) to prevent rusting and to be assembled with sufficient structural strength.

2) The frame is made of aluminum to support the exterior material and lightweight.

3) The frame is made by attaching the reinforcing bars to withstand the movement and equipment weight.

4) The bottom of the exterior material uses a steel plate with a thickness of 5.0mm or more, which prevents rusting and supports the main body sufficiently.

5) Insert all packing parts to prevent any air leaks or leaks.

5) The check doors shall be made of the same material and thickness as the outer plate, but sealed to prevent air leakage and leakage.

7) Treating the curve of the bending part smoothly, so that there is no protruding part.

8) It is easy to carry and no separate lug or forklift handling jig is made.

9) It shall be possible to apply more than 4 wheels for movement and be able to fix when operating the device.

2. Insulation ( INSULATION )

1) Atheat minimizes the heat transfer inside and outside of the equipment by applying EPDM / Agilon ARTILON with minimum thickness of 20mm.

2) The heat-insulating sheet is made of flame-retardant material.

3) There should be no gap in the area where the heating sheet touches.

3. Painting ( PAINTING )

1) Degrease by degreasing process, and then treat with phosphoric acid film.

2) The exterior material and lid of the device main body part are painted with the body paint, and the thickness of the film is 60 ~ 80㎛.

3) The thickness of the coating should be 150 ㎛ or more at baking (3 times or more) as shown in the following table.

4. Rotor and Geared  motor ( ROTOR and GEARED MOTOR )

1) The rotor should be able to operate at the inlet air condition at relative humidity 100% (RH), and should be free from air injection and water washing.

2) Rotor-driven deceleration motor (GEARED MOTOR) should be capable of continuous operation and speed control.

3) The chain type (CHAIN TYPE) is applied to the rotor drive.

4) The rotor shall be free of corrosive fluid leaks and the material shall be nonflammable.

5) Rotor regeneration should be able to reduce operating cost by using condenser waste heat.

5. Blowers and motors ( FAN and MOTOR )

1) CENTRIFUGAL blower is used. It has more than R3G 310-BB45-01 (ebm papst) which has less noise and vibration during operation.

2) The housing uses cold-rolled steel sheet with thickness of 1.0mm or more. BELL-MOUTH is installed on the air intake port to prevent air from entering and the housing surface is finished with epoxy paint to prevent corrosion.

3) The blower and the motor are integrated.

4) The blower adopts the inverter type to control the discharge air volume and it is possible to control it according to the use condition.

6. Volume damper ( VOLUME DAMPER )

1) The damper handle (DAMPER HANDLE) is smooth, easy to operate and has a surface treatment so that there is no salt corrosion. It should have a locking device and a scale to know the degree of opening and closing of the damper do.

2) The damper is airtight.

7, air filter ( PREFILTER )

1) The PRE-FILTER is a reproducible FLAT and UNIT TYPE with low pressure loss.

2) PRE-FILTER should be accessible from the front or side.

3) PRE-FILTER The dust collection efficiency should be 80% or more of AFI.

4) The frame of the PRE-FILTER uses aluminum or stainless steel.

8. Condensate removal device ( ELIMINATOR )

1) It should contribute to extend the life of other equipments by the effect of preventing splashing of condensate, and aluminum or stainless steel frame should be used.

9. Automatic drain ( AUTO DRAIN PUMP ) And trap ( TRAP )

1) It shall be capable of fully automatic drainage without overflow during operation and shall be easy to maintain.

2) Built-in check valve to prevent backflow and use flame retardant material.

3) The pump head should be more than 5m.

4) Condensate piping Parts are made of galvanized white pipe with general piping carbon steel pipe (SPP). Install the horizontal condensate pipe on the outside of the equipment with a slope of 1/100 or more and fix it with U-bolts.

5) The trap (TRAP) should always be constructed so that the air does not flow backward.

6) It should be easy to clean if dust or the like is trapped in the trap part.

10. Refrigerant piping ( REFRIGERANT PIPING )

1) Use a seamless phosphorus copper tube, and use the silver braze after brazing to prevent leakage or corrosion.

2) Use a sleeve (SLEEVE) for the required part of the piping and apply a downward slope of at least 1/400 for the horizontal pipe for oil recovery.

3) Heat insulation area should be finished with insulating tape.

4) After pipe installation, perform internal pressure and leakage test with nitrogen gas and finish.

5) Ensure that refrigerant does not seal on piping during operation and compressor stop.

6) To prevent the pipe from shaking during vibration or movement, wrap the pipe with rubber material and attach firmly with U-bolt.

7) Place the piping as short as possible and do not obstruct the passage, doors and the like.

8) In the liquid piping, prevent flash gas from being generated due to piping pressure loss of liquid refrigerant.

9) The circulation system shall be equipped with an opening and closing valve for both suction and discharge lines, and it shall include the filter driver, monitoring window, charging valve and so on.

11. Compressor ( COMPRESSOR )

1) Reciprocating compressor should be used and anti-reverse function should be added.

2) Use R-22 as refrigerant.

3) Excellent performance at high compression ratio. No noise and low vibration.

4) Install anti-vibration rubber under the compressor to prevent vibration.

12. Reheat  heater( REHEATING HEATER )

1) Integrate the heating element with AERO FIN TYPE and select a material that can prevent corrosion.

2) Make the Watt Density less than 5.0 Watt / cm ² to increase the lifetime of the heater.

3) The thickness of the external insulation is 40mm or more.

4) The heater should be equipped with the temperature control function using the sensor which can control the step according to the temperature and prevent overheating.

13. Cooling coil ( COOLING COIL ) And a regenerative capacitor coil REACT CONDENSER COIL )

* Cooling Coil

1) The pipes used are seamless pipes with a purity of 99.8% or more.

2) The pin-to-pipe joints should be in close contact with each other for water, hydraulic or mechanical expansion so as to have a sufficient thermal contact surface, and then subjected to cleaning twice or more at a temperature of 130 ° C to 140 ° C.

3) The U-BEND part is to be welded using brass and silver solder, and all copper pipe welds should be operated with a pressure of more than 0.14kgf / cm ² of nitrogen.

4) The coil HEADER uses a seamless deoxidation tube to facilitate the collection of refrigerant.

5) DISTRIBUTER is installed between the coil and the expansion valve to distribute the refrigerant flow.

6) After completing the coil, the pressure test shall be carried out with inert gas of 14kgf / cm2 or more, and there should be no leakage or other abnormality.

7) THERMOSTATIC EXPANSION VALVE is used at the coil inlet to control the flow of refrigerant by superheat.

* Regenerative capacitor coil

1) The copper tube to be used is a seamless phosphorus pipe having a purity of 99.8% or more and a diameter of 0.6 mm or more.

2) The pin-to-pipe joints should be in close contact with each other for water, hydraulic or mechanical expansion so as to have a sufficient thermal contact surface, and then subjected to cleaning twice or more at a temperature of 130 ° C to 140 ° C.

3) The U-BEND part is to be welded using brass and silver solder, and all copper pipe welds should be operated with a pressure of more than 0.14kgf / cm ² of nitrogen.

4) The coil HEADER uses a seamless deoxidation tube to facilitate the collection of refrigerant.

14. Automatic control ( CONTROL SYSTEM )

1) The controller body and the door are made to have a sufficient strength by using a galvanized steel sheet (EGI) thickness of 1.6 mm or more.

2) The body structure of the controller should be free standing and closed, and free from leakage under normal conditions.

3) Install a check lamp inside the controller and install a door limit switch so that it lights when opened.

4) Install the array for heat generation inside the controller, and attach the PRE FILTER to the array.

5) All parts are to be used at rated voltage.

6) Install the integrated meter on the panel.

7) Install a double door for the panel door, and install the emergency switch (waterproof type) on the outside.

As described above, according to the present invention, it is possible to efficiently cope with an increase in instantaneous load in a local area by an internal air circulation type, thereby enabling workers to easily move and quickly dehumidify locally when Invar condensation occurs.

In addition, since the dehumidifier and the heater are integrated with each other, the period of non-use is reduced, thereby reducing the space requirement of the equipment.

In addition, it can be miniaturized and can be moved to a doorway and lightweight, so that it can be operated from a footrest installed at the inside of a cargo hold. In addition, it can be placed close to the dehumidification space, so it can be used without any duct construction and energy loss can be minimized. In addition, the operation cost can be reduced by using the waste heat in the dehumidifying operation to dry the rotor. In addition, by having various operation modes, the dehumidification efficiency can be increased.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the scope of the present invention is not limited to the disclosed embodiments, but, on the contrary, Various modifications, alterations, and alterations can be made within the scope of the present invention.

Therefore, the embodiments disclosed in the present invention and the accompanying drawings are intended to illustrate and not to limit the technical spirit of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments and the accompanying drawings . The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

100: internal air circulation type dehumidifying device 101: exterior material
102: wheel 103: damper
105: filter 107: nozzle
110: dehumidification rotor 120: condenser
130: air supply fan 140: pre-cooler
150: heater

Claims (17)

An internal air circulation type dehumidifying device (100) used for controlling the internal humidity,
A dehumidification rotor (110) for absorbing moisture in the incoming air;
A condenser 120 installed in an air flow path to the dehumidification rotor 110 for condensing the refrigerant compressed at a high temperature and a high pressure by the compressor 122;
An air supply fan (130) for supplying air to the inside of the dehumidification rotor (110) to discharge dehumidified air;
A precooler 140 for cooling and dehumidifying air supplied from the air supply fan 130;
And a heater (150) for heating the air passing through the precooler (140)
In the summer dehumidification operation mode, the precooler 140 and the dehumidification rotor 110 are operated to discharge the air that has been cooled and dehumidified therein, while some air passing through the precooler 140 does not pass through the dehumidification rotor 110 And is discharged to the inside,
In the winter season, the heater 150 operates to discharge the heated air to the inside,
Wherein the air supply fan (130) is operated to discharge the inside air while circulating the inside air without adjusting the temperature and humidity, in the air blowing operation mode. The method according to claim 1,
Wherein the desiccant rotor (110) is dried using waste heat of the condenser (120). The method according to claim 1,
Wherein the dehumidifying rotor (110) is a honeycomb structure formed of ceramics, and the inside of the dehumidifying rotor (110) is impregnated with silica gel to absorb moisture in the air while rotating. delete delete delete The method according to claim 1,
Wherein at least four wheels (102) are provided for movement and the wheels are fixed by a fixing device during operation of the dehumidifying device. The method according to claim 1,
Wherein an outer sheet (101) of the inner circulating-air type dehumidifier (100) is provided with a thermal insulation sheet made of EPDM / silver nitrile ARTILON. The method according to claim 1,
Wherein the outer casing (101) of the internal circulating-air type dehumidifier (100) is degreased by a degreasing process and then treated with phosphoric acid. The method according to claim 1,
Wherein the outer casing (101) of the internal circulating-air type dehumidifier (100) is subjected to a coating treatment through a pretreatment, a priming with an epoxy primer, an intermediate with epoxy and a top coat with urethane. The method according to claim 1,
Wherein the drive deceleration motor of the dehumidification rotor (110) is capable of continuous operation and speed control, and is a drive system of chain type. The method according to claim 1,
A centrifugal fan is applied to the air supply fan 130, a BELL-MOUTH is installed in the air intake port to smoothly flow air, and an inverter type motor is applied to control the air volume to be discharged. Dehumidifier. The method according to claim 1,
And a damper (103) for controlling the amount of air blown into the condenser (120)
And a gas tight damper having a scale capable of detecting a locking device and a degree of opening and closing of the damper is applied so that the handle does not flow due to the degree of opening and closing of the damper. 14. The method of claim 13,
The damper 103 is provided with a filter 105,
A recyclable FLAT and UNIT type, wherein the dust collecting efficiency is 80% or more of AFI, and the frame material of the filter is aluminum or stainless steel. The method according to claim 1,
Wherein the compressor (122) is a reciprocating compressor, a reverse-phase prevention function is added, a refrigerant is R-22, and a vibration-proof rubber is installed in the lower part to prevent vibration. The method according to claim 1,
Wherein the heater (150) is an AERO FIN type, and a temperature control function using a sensor capable of integrating a heating element and controlling the temperature step by step and preventing overheating, is incorporated in the internal air circulation type dehumidifier. The method according to claim 1,
And an angle adjustable nozzle (107) is installed at a discharge port through which air is discharged.

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