KR100611645B1 - Desiccant cooling system using desiccant rotor and heat pipe - Google Patents

Abstract

The present invention relates to a dehumidification air conditioning system to which an adsorption-type dehumidification rotor and a heat pipe are applied, and more specifically, a dehumidification rotor for removing moisture from the introduced air; A first heat pipe absorbing and radiating heat of air passing through the dehumidifying rotor; A refrigerator for absorbing and radiating heat of air drawn from the evaporator of the first heat pipe by evaporation of the refrigerant; A first electric heater for reheating the supercooled air as necessary when the air passing through the freezer is supercooled and the temperature is low; A cooling pad provided in front of the first heat pipe condenser and spraying water lower than the dew point temperature of the air passing through the condenser of the refrigerator to further lower the temperature of the air and reduce moisture; And a second electric heater for heating air passing through the cooling pad and the first heat pipe condenser sequentially. It relates to a dehumidification air conditioning system comprising; and a second heat pipe having a structure for heating the regeneration air by recovering the waste heat of the air exhausted after drying the moisture-containing portion of the dehumidification rotor.

According to the dehumidification and air conditioning system according to the present invention, by installing a cooling pad in front of the first heat pipe condenser and spraying the circulating water, not only can the cooling capacity of the first heat pipe be increased in the evaporator but also absorb the heat of the exhaust air. By providing a second heat pipe having a structure for heating regenerated air, there is an effect of reducing heating energy for regeneration of the second electric heater.

Dehumidification rotor, heat pipe, air conditioning system, regenerative heat

Description

Dehumidification and Air Conditioning System with Adsorption Dehumidification Rotor and Heat Pipe {DESICCANT COOLING SYSTEM USING DESICCANT ROTOR AND HEAT PIPE}

1 shows a first embodiment of a dehumidification air conditioning system to which an adsorption type dehumidification rotor and a heat pipe according to the present invention are applied.

FIG. 1A is an enlarged view of a portion 280a of FIG. 1;

Figure 2 shows a second embodiment of the dehumidification air conditioning system to which the adsorption type dehumidification rotor and heat pipe according to the present invention,

FIG. 2A is an enlarged view of portion 280b of FIG.

Figure 3 shows a third embodiment of the dehumidification air conditioning system to which the adsorption type dehumidification rotor and heat pipe according to the present invention,

Figure 4 shows a fourth embodiment of the dehumidification air conditioning system to which the adsorption type dehumidification rotor and heat pipe according to the present invention are applied.

[Description of Drawing Reference]

10 ... dehumidification and air conditioning system 12 ... dehumidification rotor

14 ... first heat pipe 14a ... first heat pipe evaporator

14b ... 1st heatpipe condenser 16 ... freezer

16a ... freezer evaporator 16b ... freezer condenser

18 ... first electric heater 22 ... cooling pad

24 ... second heat pipe 24a ... second heat pipe evaporator

24b ... second heat pipe condenser 26 ... second electric heater

28a ... linear coil 28b ... cold water coil

280a ... sump tank structure with straight coils 280b ... sump tank structure with cold water coils

28c ... sump tank 28d ... bypass line

32a ... vent 32b ... air supply

32c ... outside air inlet 32d ... first exhaust port

32e ... 2nd exhaust port 34b ... Air supply fan

34e ... exhaust fan 30 ... duct

40 ... Indoor A ... Return Air

B ... Supply Air C ... Outdoor Air

D ... First Exhaust Air E ... Second Exhaust Air

F ... regenerated air

The present invention relates to an air conditioning apparatus using a desiccant that can protect the environment and use air and water as a working fluid. More specifically, the air cost is effectively recovered by using a desiccant to recover the latent heat in the air. It relates to a dehumidification and air conditioning system including an adsorption dehumidification rotor and a heat pipe to reduce the heat.

In general, the air conditioning system is a device that maintains conditions such as air temperature, humidity, air flow, and cleanliness in a state most suitable for the purpose of indoor use. Filtering the outside air and controlling the temperature and humidity to mix the duct to the optimum temperature and humidity Refers to a device that supplies indoors through. This air conditioning system uses evaporative heat that takes heat away from the liquid when the liquid evaporates, such as a refrigerator or a refrigerator. As a refrigerant, a liquid that is easy to evaporate even at low temperatures is used. Such refrigerants are prohibited from using CFCs, increasing cooling energy, and indoor air quality. Alternative refrigerants are required as the environmental demands for the improvement of quality of life, along with the improvement, the increase of ventilation requirements, the global warming problem.

Recently, air conditioning systems have been banned from the use of CFCs as described above, increased cooling energy, improved indoor air quality, increased ventilation requirements, global warming, and environmental demands resulting from improved quality of life. Environmentally friendly air conditioning systems have emerged.

Korean Patent Laid-Open Publication No. 2005-0013644 is a dehumidification system using a desiccant, which constitutes a diaphragm that separates an interior of a housing into an air supply unit including an air supply and a regeneration unit including a regenerator, and a supply unit is configured to introduce air supply from an air conditioning system. Inlet and outlet for discharging the air supply to the confined space, the regeneration unit has an inlet for inlet air and outlet for discharging the regenerated air, and the fan located in the regeneration unit and the airflow transmitter to generate the regeneration air flow And a rotatable dehumidifying wheel positioned so that one part of the wheel extends to the supply side and the other part of the wheel extends to the regeneration part, and the wheel is rotated through the air supply and the regeneration air to dehumidify the air supply and the desiccant wheel The regeneration air can be heated as needed to regenerate the desiccant wheel while rotating through the regeneration air. Consisting of a heat source; However, such a dehumidification system using a desiccant requires a heat source for generating regenerated air, and consumes a large amount of energy for driving the heat source, resulting in high operating costs and low efficiency.

It is an object of the present invention to provide a solid dehumidification rotor, an electric heater, a first heat pipe and a freezer, and at the same time install a cooling pad in front of the first heat pipe condenser to circulate water when air passes through the cooling pad through the condenser of the freezer. By spraying the more efficient cooling occurs in the first heat pipe evaporator and provides a dehumidification air conditioning system configured to be more efficient heating in the second electric heater.

Another object of the present invention is to reduce the power consumption of the second electric heater for regeneration by having a second heat pipe having a structure for heating the regeneration air by absorbing the heat of the air exhausted after drying the moisture-containing portion of the dehumidification rotor. It is to provide a dehumidification and air conditioning system.

In order to achieve the above object of the present invention, the present invention provides a dehumidification and air conditioning system for supplying outdoor air through a duct so as to provide indoor air having an optimal temperature and humidity, or recirculating indoor air to have an optimal temperature and humidity. A dehumidification rotor for removing moisture from the introduced air; A first heat pipe having an evaporator for absorbing heat of air passing through the dehumidifying rotor and a condenser for dissipating heat to air exhausted from the room; A freezer comprising an evaporator for absorbing heat of air drawn from the evaporator of the first heat pipe by evaporation of a refrigerant and a condenser for dissipating heat to air exhausted from the room; A first electric heater for reheating the supercooled air as necessary when the air passing through the dehumidification rotor, the evaporator of the first heat pipe, and the freezer evaporator is low in temperature and low in temperature; A cooling pad provided in front of the first heat pipe condenser and spraying water lower than a dew point temperature of the air passing through the condenser of the refrigerator to lower the temperature of the air and reduce water vapor in the air; And a second electric heater provided between the dehumidification rotor and the condenser of the first heat pipe and heating the air sequentially passing through the cooling pad and the heat pipe condenser. Including, but the evaporator of the refrigerator formed a bypass pipe structure or a bypass pipe structure for winding a coil filled with a refrigerant on the outer circumferential surface of the sump tank and the cold water coil formed to use a portion of the cold water flowing in the pipeline as sprayed water It can be a structure.

In addition, the present invention passes the air drawn from the condenser 14b of the first heat pipe and the evaporator 24a for absorbing the heat of the air that is exhausted to the outside and the air passed through the rear end of the second electric heater 26 Alternatively, the structure may include a second heat pipe 24 having a condenser 24b provided to the front of the second electric heater.

Hereinafter, the most preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. . Other objects, features, and operational advantages, including the object, operation, and effect of the present invention will become more apparent from the description of the preferred embodiment.

1 and 1A show a case in which the evaporator 16a of the refrigerator is a linear coil structure 280a as a first embodiment of a dehumidification air conditioning system 10 to which an adsorption type dehumidification rotor and a heat pipe are applied according to the present invention. .

Reference numeral 30 is a duct formed in the upper and lower centered around the diaphragm. The duct 30 is formed in the lower first side and the ventilation opening (32a) for introducing the ventilation air (A) from the room 40, and the air supply air (B) formed on the other side of the lower side and having an optimal temperature and humidity indoors The air supply port 32b which draws in into 40, the outside air inlet 32c which forms in the lower 2nd side surface, and draws in the outdoor air C, and the 1st exhaust air of the room 40 formed in the other upper surface A first exhaust port 32d for exhausting (D) and an exhaust port 32e for exhausting the first exhaust air D into the final second exhaust air E are provided on one side of the upper side.

The inside of the duct 30 is provided over the upper and lower and passes through the ventilation air (A) or the outdoor air (C) drawn from the lower ventilation opening (32a) or the outside air inlet (32c) to directly remove the water or the upper A dehumidifying rotor 12 for removing moisture of air supplied from the second electric heater 26; An evaporator (14a) of the first heat pipe (14a) provided in the lower portion of the duct, in communication with the lower portion of the dehumidification rotor (12) and absorbing heat of air passing through the dehumidification rotor (12); An evaporator (16a) of the refrigerator (16) for absorbing heat of air supplied from the evaporator (14a) of the first heat pipe (14) by evaporation of the refrigerant; A first electric heater (18) for reheating the supercooled air as necessary when the air drawn from the evaporator (16a) of the refrigerator (16) is supercooled; And an air supply fan 34b for forcibly supplying the air reheated from the first electric heater 18 to the air supply air B through the air supply port 32b.

In addition, the inside of the duct 30, the condenser 16b of the refrigerator 16 for radiating heat to the first exhaust air (D) drawn from the room 40 through the exhaust port (32d); A cooling pad 22 which lowers the temperature of the air passing through the condenser 16b and sprays water lower than the dew point temperature of the air passing through the condenser 16b to lower the temperature of the air and reduce moisture; A heat pipe condenser 14b for condensing the air drawn from the cooling pad 22; An electric heater 26 is provided between the upper part of the dehumidification rotor 12 and the condenser 14b of the first heat pipe and heats the air sequentially passing through the cooling pad 22 and the heat pipe condenser 14b. The evaporator 16a of the refrigerator includes a straight coil structure 28a for winding a coil filled with a refrigerant on the outer circumferential surface of the sump tank 28c.

The dehumidification rotor 12 is provided over the upper and lower portions of the duct 30 to dehumidify the ventilation air (A) and the outdoor air (C) in the direction of the supply air (B) or in the first exhaust air (D) to the second. It can be formed into a laminated cylindrical shape in which the flat paper and the corrugated paper impregnated with silica gel as an adsorbent as ceramic fibers to be regenerated in the exhaust air (E) direction are alternately wound and have a strong strength. In addition, the dehumidification rotor 12 has a structure in which a plurality of fine holes are formed in the flat paper to easily absorb water molecules in the air passing through the rotor. Since the dehumidification rotor 12 is rotated over the upper and lower parts, the lower part absorbs moisture such as water molecules and rotates at the same time, where the moisture absorbed part is dried by hot air from the upper part. The dehumidification rotor 12 preferably has heat resistance and flame retardancy, and more preferably can be used in a wide range of humidity.

The first heat pipe 14 includes an evaporator 14a below the duct 30 and a condenser 14b above. The first heat pipe has a structure in which a portion of the heat medium is filled in a sealed tube with a fin on the outside while maintaining the inside in a vacuum and has a diaphragm in the middle. The heat medium absorbs heat of air when air is passed through. The vapor pressure of the lower portion rises and the upper portion of the upper portion evaporates, and the upper portion has a structure in which the vapor pressure decreases as the heat medium releases heat and condenses. In other words, the lower evaporator 14a has a structure in which the heat medium absorbs heat to evaporate and the condenser 14b heat dissipates heat and condenses the heat medium. That is, the heat medium evaporated due to the pressure difference between the upper and lower parts moves rapidly to the heat pipe condenser, radiates heat from the condenser, and the condensed heat medium also flows down to the evaporator by gravity, causing continuous heat transfer.

The freezer (16) is composed of an evaporator (16a) and a condenser (16b) of the lower portion of the duct 30 in the evaporator (16a) to supply the cooling air passed through the heat pipe 14 to the room The air is secondarily cooled, and in the freezer evaporator 16a, the heat medium absorbs heat and evaporates like the heat pipe evaporator 14a.

The cooling pad 22 passes the first exhaust air D introduced from the room 40 through the condenser 16b of the refrigerator 16 and is lower than the dew point temperature of the air passing through the refrigerator 16. It is configured to spray the spray water, and the temperature of the air is lowered by the evaporative cooling of the spray water, and the spray water lower than the dew point temperature condenses the water vapor in the air to reduce the humidity of the air.

The evaporator 16a of the refrigerator 16 is a structure formed by a straight coil structure 28a which winds a coil filled with a refrigerant on the outer circumferential surface of the sump tank 28c. The refrigerant in the coil evaporates the sprayed water inside the sump tank. It can be cooled below the dew point temperature of the passing air. The winding of the linear coil is most preferably wound so that the temperature of the water inside the sump tank is below the dew point temperature. In addition, the winding of the linear coil is wound to maintain the degree of superheat (2 ~ 3 ℃) to prevent the compressor refrigerant wet compression that may occur when the evaporator 16a of the refrigerator 16 has the linear coil structure. It is most preferred that the structure be configured such that the coil winding of the evaporator can be easily wound or unwound.

The first electric heater 18 is for reheating to suit the room conditions to be supplied when the air B supplied to the room 40 is supercooled, and the temperature of the air passing through the evaporator 16a of the refrigerator is appropriate. Can be kept off. In other words, whether the first electric heater 18 is heated or not is determined according to the temperature of the secondary cooled air and the appropriate room temperature reference.

The second electric heater 26 may have the same structure as the first electric heater 18 or a structure commonly used in the air-conditioning technology, and the dehumidification rotor 12 and the condenser 14b of the first heat pipe. It is provided between and heats the air passing through the cooling pad 22 and the heat pipe condenser 14b sequentially.

2 and 2a show a second embodiment of a dehumidification air conditioning system 10 to which an adsorption type dehumidification rotor and a heat pipe are applied according to the present invention, and a sump tank structure when the evaporator 16a of the refrigerator uses a cold water coil ( 280b) is shown. When the evaporator 16a is the cold water coil structure 28b, a portion of the cold water on the cold water coil side may be bypassed to the sump tank and used as the spray water of the sump tank. In this case, the amount of sprayed water may vary depending on the cooling pad specification, and generally a small amount is sufficient.

3 and 4 illustrate a third and fourth embodiments of a dehumidification air conditioning system using an adsorption type dehumidification rotor and a heat pipe according to the present invention, and absorb heat of air exhausted to the outside of the structure of FIGS. 1 and 2. A condenser 24b that passes air drawn from the evaporator 24a and the condenser 14b of the first heat pipe and provides the passed air to the rear end of the second electric heater 26 or the front of the second electric heater. The structure which added the 2nd heat pipe 24 which has ().

The evaporator 24a of the second heat pipe 24 absorbs heat and evaporates the heat medium, and the condenser 24b absorbs heat of the second exhaust air E as the heat medium dissipates and condenses heat. It is a structure for heating the regeneration air (F) using the heat of absorption. With the above structure, the regeneration air (F) is introduced into the rear end of the second electric heater 26 or the front of the second electric heater to reduce the regeneration energy required for the second electric heater 26 to heat the air. Bring it.

Hereinafter, an operation process of the dehumidification air conditioning system 10 to which the adsorption type dehumidification rotor and the heat pipe according to the present invention will be described with reference to FIGS. 3 and 4.

3 and 4 respectively show a second heat pipe when the evaporator 16a of the freezer of FIG. 1 has a linear coil structure 28a and the case where the evaporator 16a of the freezer of FIG. 2 has a cold water coil structure, respectively. In the structure in which 24 is added, the second heat pipe 24 is constituted by the evaporator 24a and the condenser 24b as described above.

In the drawing, reference numeral A denotes ventilation air recirculated from the room 40 to the dehumidification air conditioning system 10, and reference numeral B denotes air supply air supplied from the dehumidification air conditioning system 10 to the room 40, and reference numeral C denotes Outdoor air that is introduced into the dehumidification air conditioning system 10 from the outside, that is, introduced outside air, and reference numeral D denotes the first exhaust air exhausted from the indoor 40 to the dehumidification air conditioning system 10, and reference numeral E denotes the dehumidification air conditioning system ( 10 is a second exhaust air exhausted to the outside from the outside, and reference numeral F denotes regeneration air for regenerating the dehumidifying rotor 12 in the dehumidifying air conditioning system 10 through the second heat pipe in the dehumidifying air conditioning system 10.

First, the ventilation air A recirculated from the indoor 40 to the dehumidification air conditioning system 10 and the outdoor air C introduced into the dehumidification air conditioning system 10 outdoors are introduced into the dehumidification air conditioning system 10. Water vapor contained in the introduced ventilation air (A) and the outdoor air (C) is removed by the dehumidification rotor 12 formed of flat paper and corrugated paper impregnated with silica gel or the like to be changed to dry air and at the same time water vapor of the dehumidifying rotor 12. The part which absorbed the back is rotated and dried by hot air in the upper part of the duct.

The dry air passing through the dehumidification rotor 12 passes through the evaporator 14a of the first heat pipe 14, is deprived of heat by the heat medium of the first heat pipe 14, and becomes cold air at low temperature. The refrigerant inside the pipe (14) evaporates and rises to the top, which subsequently radiates heat, condenses and falls back to the bottom. This rise and fall of the refrigerant means repeated evaporation and condensation.

The cooling air having passed through the first heat pipe 14 is secondarily cooled to pass through the evaporator 16a of the refrigerator 16 and to be supplied to the room at the same time. The secondary cooling process is also similar to the process in which the heat medium absorbs heat and evaporates and cools, such as the heat pipe evaporator 14a.

The secondary cooled air is selectively heated by the first electric heater 18. Since the secondary cooled air is air supplied to the room, it should be adjusted to an appropriate room temperature, but if it is overcooled by the evaporator 16a of the refrigerator 16 to be not suitable for the room temperature, it should be heated to an appropriate room temperature. If cooled to an appropriate room temperature, it does not need to be heated. That is, it is selectively heated by the first electric heater 18 according to the temperature of the secondary cooled air and the appropriate room temperature reference.

The secondary cooled air or the secondary cooled air heated by the first electric heater is supplied to the room 40 as the air supply air B. The air supply (B) is an air having a very ideal temperature and humidity that can be consumed indoors is not only beneficial to life, but also prevents respiratory diseases. The air supply (B) acquires heat and moisture in the form of sensible and latent heat by heat transfer between the outside and the room as a predetermined time passes, and acquires a latent heat due to respiratory action and increases the concentration of carbon dioxide in the room. It must be continuously ventilated to maintain it, and at the same time the air supply must be continuously supplied to the room. The ventilation process of the air supply air (B) is a process of introducing into the dehumidification air conditioning system 10 as the ventilation air (A) recirculating from the indoor 40 to the dehumidification air conditioning system 10 and from the indoor 40 to the outdoor. It may be a process to be introduced into the dehumidification air conditioning system 10 as the exhaust air (D) to be exhausted.

The first exhaust air D is introduced into the dehumidification air conditioning system 10 through the exhaust port 32d. The first exhaust air (D) is passed to the condenser (16b) of the freezer to increase the dry bulb temperature and then pass through the cooling pad 22, spray water and cooling lower than the dew point temperature of the exhaust air (D) sprayed from the sump tank When contacted with the pad, the temperature is lowered by the evaporative cooling and the humidity is also lowered.

The air having low temperature and humidity can easily radiate heat from the heat pipe condenser 14b, and at the same time, the air passing through the evaporator can be cooled well by evaporation in the evaporator 14a under the heat pipe. In addition, the air having a low humidity has an effect of reducing the consumption of heating time and heating energy by the second electric heater and reducing the dehumidification time and the amount of dehumidification.

Air passing through the first heat pipe condenser 14b passes through the second electric heater 26 and the dehumidifying rotor 12 and is exhausted to the outside through the second exhaust port 32e (second exhaust air E). While passing through the evaporator 24a of the second heat pipe, the heat is radiated from the evaporator 24a. At this time, the heat of the evaporator 24a is moved up to the second heat pipe condenser 24b. In addition, the low temperature and low humidity air passing through the first heat pipe condenser 14b increases in temperature due to absorption heat of the lower evaporator 24a while passing through the second heat pipe condenser 24b and the second electric heater 26. It is provided to the regeneration air (F) at the rear or front end of the.

The regenerated air (F) is heated in the condenser (24b) due to the absorption heat of the evaporator (24a) and when the regenerated air is drawn to the front end of the second electric heater (26) for regeneration by the second electric heater (26) Regeneration energy that needs to be heated can be reduced, and thus power consumption for regeneration of the second electric heater 26 can be greatly reduced.

For reference, the specific embodiments of the present invention are only presented by selecting the most preferred embodiments to help those skilled in the art from the various possible examples, and the technical spirit of the present invention is not necessarily limited or limited only by the embodiments. In addition, various changes, additions and changes are possible within the scope without departing from the spirit of the present invention, as well as other embodiments that are equally apparent.

As described above, the dehumidification and air conditioning system according to the present invention provides a solid type dehumidification rotor, an electric heater, a first heat pipe, and a refrigerator, and at the same time, installs a cooling pad in front of the first heat pipe condenser and installs a linear coil on the sump tank outer periphery. Since the winding and the temperature of the water in the sump tank to be below the dew point temperature can not only induce more efficient cooling in the first heat pipe evaporator, but also save power consumption for regeneration of the second electric heater. In addition, the dehumidification and air conditioning system according to the present invention includes a second heat pipe having a structure that absorbs heat of exhausted air and heats regenerated air so that the air is heated by the second electric heater and regenerated by the second electric heater. It is effective to reduce the consumption of air heating energy.

Claims (3)

In a dehumidification and air conditioning system, in which outdoor air is supplied through a duct so as to have indoor air having an optimal temperature and humidity, or indoor air is recycled to have an optimal temperature and humidity. A dehumidification rotor 12 for removing moisture from the introduced air; A first heat pipe (14) having an evaporator (14a) and a condenser (14b) for absorbing and radiating heat of air passing through the dehumidification rotor (12); A refrigerator (16) having an evaporator (16a) and a condenser (16b) for absorbing and radiating heat of air drawn from the evaporator (14a) of the first heat pipe (14) by evaporation of the refrigerant; When the air passing through the dehumidification rotor 12, the evaporator 14a of the first heat pipe and the freezer evaporator 16a is supercooled and the temperature is low, the first electric heater 18 reheats the supercooled air as necessary. ; The temperature of the air provided in front of the first heat pipe condenser 14b and passed through the condenser 16b of the freezer is reduced by evaporative cooling and at the same time lower than the dew point temperature of the air passed through the condenser 16b of the freezer. A cooling pad 22 for spraying water to reduce water vapor in the air; And A second electric heater 26 provided between the dehumidification rotor 12 and the condenser 14b of the first heat pipe and heating the air sequentially passing through the cooling pad 22 and the heat pipe condenser 14b; ; Including The evaporator (16a) of the refrigerator comprises a straight coil structure (28a) for winding a coil filled with a refrigerant on the outer circumferential surface of the sump tank (28c). The method of claim 1, The evaporator 16a of the refrigerator includes a cold water coil structure 28b formed to form a bypass pipe path 28d as a sump tank 28c and use a portion of cold water flowing in the pipe as spray water. Dehumidification and air conditioning system (10). The method according to claim 1 or 2, The air drawn from the evaporator 24a and the condenser 14b of the first heat pipe, which absorbs the heat of the air exhausted to the outside, is heated using the heat raised from the evaporator 24a and the second electric heater 26 And a second heat pipe (24) having a condenser (24b) provided at a rear end or in front of the second electric heater.

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