KR101394373B1 - Air conditioner system for isothermal-isohumidity control - Google Patents

Abstract

The present invention relates to an energy saving air conditioning system for constant temperature and constant humidity control. The system includes a main duct with an internal space and sucking indoor air and outdoor air to blow the air to the indoor; a compressor, a first condenser connected to the compressor, a second condenser connected to the first condenser; an air conditioning unit having an expansion valve selectively connected to the first or second condenser, and a air-conditioning coil (evaporator); an evaporation type humidifier installed in the main duct to spray evaporated water and provided with at least one of the condensers; a heating unit provided in the main duct to increase the temperature of the air passing the main duct; a first direction switching valve controlling the flow of a refrigerant discharged from the compressor to pass the first condenser or not to pass the first condenser; and a second direction switching valve controlling the flow of the refrigerant discharged from the compressor to pass the second condenser or not to pass the second condenser. Therefore, the energy is saved since a separate heat source is not used for the air conditioning and humidifying operation or for the dehumidifying and heating operation. Since the entire length of the refrigerant pipe is shortened, the equipment is simple, and the installation costs can be reduced.

Description

[0001] The present invention relates to an air conditioner system for isothermal-

The present invention relates to an air conditioning system, and more particularly, to an energy-saving air conditioning system for constant temperature and humidity.

BACKGROUND ART [0002] Generally, an air conditioner including a duct, a blowing fan, a cooling coil, a heating coil, and the like is installed as a facility for controlling the temperature, humidity, and cleanliness of an indoor air in a proper state in a large building or a factory. In the air conditioner installed, a large number of evaporative humidifiers, which are one of the humidifying means, are installed in order to more actively regulate the humidity.

This is because, if the indoor air is dried, there is a lot of closed ends, and if the indoor air is extremely dried, the indoor health of the occupant and the comfort of the indoor environment may be lowered, Or cause excessive generation of static electricity, and the like.

That is, since the humidity is low, the virus contained in the air can easily penetrate into the human body when the air is dried too much, the evaporation amount of moisture from the skin of the occupant increases, and the energy consumption for maintaining the sensible temperature is increased. Drying of the skin can cause skin diseases.

In addition, it is difficult to maintain the quality of products produced using hygroscopic materials such as paper and fiber, and there is a concern that the value of products such as vegetables and fruits may deteriorate. In addition, .

In addition, if it is dried too much, static electricity is excessively generated, causing a malfunction of precision equipment or electronic equipment. In particular, in the case of a constant temperature laboratory or a constant temperature and humidity room used for production of a product, a constant temperature and humidity must be maintained at all times. Humidity can not be maintained, so that accurate experimental values can not be obtained, and the quality of products to be produced under constant temperature and humidity conditions is lowered.

In order to solve the above problems, the air conditioner is provided with a humidifying means for controlling the humidity of the air supplied to the room.

A duct of the air conditioner is provided with a vaporization type humidifier, which is one of the humidifiers.

As shown in the figure, the evaporative humidifier 100 includes a humidifying water supply pipe 104 connected to the water tank 102, and a humidifying element 104 having a honeycomb shape is installed on the water tank 102, 106 are connected to the upper part of the humidifying element 104 so as to be spaced apart from each other by a predetermined distance.

The humidifying water supply pipe 106 is provided with a plurality of nozzles 108 for spraying humidifying water with a humidifying element 104 and a pump 110 for supplying humidifying water to the nozzles 108 ).

A water supply pipe 112 is connected to the other side of the water tank 102 to replenish the evaporated humidification water. The water supply pipe 112 is opened and closed in accordance with the water level of the water in the water tank 102, A control valve (114) is provided to open the water level when the water level is low, and to close the water level of the humidification water when the water level is appropriate.

The vaporization type humidifier 100 constructed as described above is configured such that humidifying water pressurized by the pump 110 is blown onto the upper side of the humidifying element 104 as a nozzle 108, And the humidification water is allowed to flow in the horizontal direction so that the air passing through the humidifying element 104 is humidified and blown into the room.

This vaporization type humidifier 100 is simpler in installation than the other humidifiers, has high efficiency, consumes less energy, generates less noise, and can purify the contaminated air in the first place. There is an increasing tendency in use.

However, the evaporative humidifier provided in the conventional air conditioner has a problem that the humidification performance is lowered due to continuous use due to a low temperature of the supplied humidification water.

That is, since the temperature of the humidifying water supplied to the humidifying element of the evaporative humidifier is low, even when humidified, a phenomenon often occurs easily on the surfaces of ducts, walls, and appliances. Such condensation causes a malfunction of the apparatus And bacterial growth is facilitated, which leads to a problem that the cleanliness of the indoor air is lowered.

As a method for preventing the condensation phenomenon as described above, there has been proposed a method of increasing the humidifying performance by adding a separate heating means to increase the temperature of the humidifying water supplied to the humidifying element, As the temperature of the humidifying water is raised by artificially heating means, the humidification performance can be temporarily improved. However, when the heating means and the evaporative humidifier are continuously operated, the scale is generated inside the humidifying humidifier And there is a problem that the humidification performance is lowered and additional energy is supplied additionally.

In addition, the cooling coil for cooling the air blown into the room corresponds to the evaporator of the refrigeration cycle, and the temperature of the air blown into the room is lowered by using the heat of evaporation of the refrigerant.

That is, in the cooling means constituted by the compressor-condenser-expansion valve-evaporator, the evaporator performs the heat exchange with the room air to lower the room air temperature, and the condenser performs the heat exchange with the outdoor air to lower the temperature of the refrigerant.

Ventilate the evaporator and condenser with a fan to increase heat exchange efficiency. Since the evaporator is installed in the duct, energy loss due to heat exchange or additional power is not required. However, since the condenser exchanges heat with outdoor air, a separate power is required to operate the fan. Heat emitted from the condenser is dissipated into the atmosphere, There was a loss.

Accordingly, the applicant of the present invention has been made aware of the above-mentioned problems, and by raising the temperature of the humidifying water supplied to the evaporative humidifier using the heat of condensation of the air conditioner, the condensation phenomenon is prevented, (Patent Registration No. 530387) which recycles the heat of condensation which can improve the heat exchange performance of the air conditioner of the present invention.

As shown in FIGS. 2 and 3, the air conditioner for recycling the condensation heat includes a predetermined space formed therein, an air supply duct 12 for supplying conditioned air to the room by an air supply fan 15, A main duct 11 connected to one end and connected to the other end of the ventilation duct 13 for circulating polluted air from the room by the ventilation fan 16; A compressor (21), a plurality of condensers (22, 22-1) connected to the compressor (21), an expansion valve (25) connected to the plurality of condensers (22, 22-1) And a cooling coil (20) provided inside the cooling chamber (11) so as to allow the refrigerant to flow therein; A vaporizing humidifier 100 provided in the main duct 11 so that humidifying water is sprayed to the humidifying element 104 and one of the condensers 22 and 22-1 passes through the inside thereof; And heating means (40) provided in the main duct (11) for increasing the temperature of air passing through the main duct (11).

The cooling means includes a first condenser 22 provided outside the main duct 11 and a second condenser 22 installed in the evaporative humidifier 100 so as to be connected to the branch pipes 26 connected to the compressor 21, And the refrigerant discharged from the compressor 21 flows through the branch pipe 26 to the first condenser 22 and the second condenser 22-1 ) In the direction of flow.

The branch pipes 26 are provided with control valves 27a and 27b which are opened and closed to control the flow of the refrigerant respectively and the outlets of the first and second condensers 22 and 22-1 And check valves 28a and 28b for preventing reverse flow of the refrigerant are provided.

Reference numeral 25 in the drawing denotes an expansion valve 25 provided on a pipe connecting the cooling coil 20 and the receiver 24. [

The vaporization type humidifier 100 includes a water tank 102 in which a lower portion is hermetically sealed and humidifying water is stored, a humidification chamber 102 formed in a honeycomb shape and having a through hole 102a formed therein, A condensing pipe connected to the end of the refrigerant circulation pipe connected to the compressor 21 and passing through the through hole 102a of the humidifying element 104; And a water spray nozzle 108 connected to the water tub 102 by a humidifying water supply pipe and spraying humidification water to the humidifying element 104.

In the evaporative humidifier 100, a distributor is connected to the end of the refrigerant circulation pipe to divide the flow of the refrigerant. A plurality of condensing pipes, one end of which is connected to the distributor, and a condenser pipe A refrigerant recovery header for collecting the branched refrigerant is provided, and a condensing pipe is provided in multiple stages between the humidifying elements 104. [

The air conditioner for recycling the condensation heat having the above-described configuration is configured such that the temperature of the humidifying water supplied to the evaporative humidifier is supplied to the evaporative humidifier using the condensation heat of the air conditioner, By increasing the temperature of the humidifying water, a condensation phenomenon due to the humidifying water can be prevented, and thus a vaporized humidifier having improved humidifying performance can be obtained. Moreover, the heat of the refrigerant flowing in the condenser is utilized in the process of raising the temperature of the humidifying water The effect of improving the heat exchanging efficiency of the condenser can also be obtained.

However, the air conditioner recycled by the applicant of the present invention and registered in the prior art has several problems as follows.

That is, the first and second condensers 22 and 22-1 are connected in parallel, and the branch pipe 26 branches the refrigerant flow to the first and second condensers 22 and 22-1. A control valve 27a for controlling the flow of the refrigerant is provided between the first condenser 22 and the branch pipe 26 and the second condenser 22-1 and the branch pipe 26 are connected to each other, A control valve 27b is provided between the first condenser 22 and the receiver 24 and between the second condenser 22-1 and the receiver 24 to prevent the refrigerant from flowing backward The check valves 28a and 28b are installed, and the construction of the check valves 28a and 28b is very complicated.

In addition, there is a problem in that the length of the extension of the pipe connecting the respective components becomes long, which makes the installation difficult. 2, the first pipe 30 connecting the compressor 21 and the branch pipe 26 and the second pipe 30 connecting the branch pipe 26 and the first condenser 22 A third pipe 32 connecting the first condenser 22 and the receiver 24 and a fourth pipe 33 connecting the branch pipe 26 and the second condenser 22-1. A fifth pipe 34 connecting the second condenser 22-1 and the receiver 24, a sixth pipe 35 connecting the receiver 24 and the cooling coil 20, And a seventh pipe 36 for connecting the compressor 20 and the compressor 21 are provided, respectively.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is an object of the present invention to provide a refrigerator having a simplified structure of a refrigerant flow structure by using a condensation heat which is easy to manufacture, And to provide an energy saving type air conditioning system for constant temperature and humidity so that the facility cost can be reduced as the length is reduced.

According to an aspect of the present invention, there is provided an energy-saving air conditioning system for constant temperature and humidity, comprising: a main duct having an internal space formed therein for sucking indoor air and outdoor air into a room; A cooling device including a compressor, a first condenser connected to the compressor, a second condenser connected to the first condenser, and an expansion valve and a cooling coil (evaporator) selectively connected to the first condenser or the second condenser Means; A vaporization type humidifier installed in the main duct, in which humidifying water is sprayed and in which one of the condensers is installed; A first direction switching valve that is installed in the main duct and that increases the temperature of air passing through the main duct and that prevents the refrigerant discharged from the compressor from passing through the first condenser, Wow; And a second direction switching valve for preventing the refrigerant discharged from the compressor from passing through the second condenser or not passing through the second condenser.

Here, the refrigerant discharged from the compressor during the cooling operation or the dehumidification operation using the air conditioning system passes through the first direction switching valve, passes through the first condenser, passes through the second direction switching valve, After passing through a cooling coil (evaporator), heat-exchanges with air passing through the main duct, and then returns to the compressor.

In this case, water may be sprayed using the evaporative humidifier during the first stage humidification operation using the air conditioning system.

In the first stage of dehumidification reheat operation using the air conditioning system, the refrigerant discharged from the compressor passes through the first direction switching valve, passes through the first condenser, passes through the second direction switching valve, After passing through the condenser and the expansion valve, heat is exchanged with air passing through the main duct while passing through the cooling coil (evaporator), and then returned to the compressor.

In this case, water may be sprayed using the evaporative humidifier to perform heat exchange with the refrigerant passing through the second condenser, during a cooling two-stage humidification operation using the air conditioning system.

On the other hand, in the two-stage dehumidification reheat operation using the air conditioning system, the refrigerant discharged from the compressor passes through the first direction switching valve and the second direction switching valve and bypasses the first condenser, After passing through a cooling coil (evaporator), heat-exchanges with air passing through the main duct, and then returns to the compressor.

Here, in the cooling three-stage humidification operation using the air conditioning system, water may be sprayed by using the vaporization type humidifier so that the sprayed water is heat-exchanged with the refrigerant passing through the second condenser.

As described above, according to the energy saving type air conditioning system for constant temperature and humidity according to the present invention, the first direction switching valve and the second direction switching valve are installed in the refrigerant cycle, and the flow of the refrigerant is controlled according to each operating condition. The cooling humidification and the dehumidification reheat are performed in multiple stages using the condensation heat without using a separate heat source at the time of cooling humidification or dehumidification reheat, thereby saving energy.

In addition, since the first direction switching valve and the second direction switching valve for controlling the flow of the refrigerant are installed, the refrigerant pipe connecting the respective components, that is, the pipe connecting the first condenser and the receiver, The overall length of the pipe connecting the receiver is shortened, and the overall length of the refrigerant pipe is reduced, so that the facility is easily provided and the equipment cost is accordingly reduced.

1 is a perspective view of a conventional evaporative humidifier configuration;
2 is a block diagram showing an air conditioner registered and registered by the applicant of the present invention.
FIG. 3 is a perspective view showing a configuration of a vaporization type humidifier applied to FIG. 2; FIG.
4 is a view showing an energy saving type air conditioning system for constant temperature and humidity according to the present invention.
5A to 5C are views illustrating a refrigerant flow according to an operating state of an energy-saving air conditioning system for constant temperature and humidity according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 4 is a configuration diagram of an energy saving type air conditioning system for constant temperature and humidity according to the present invention, and FIGS. 5A to 5C are views showing a flow of a refrigerant according to an operating state.

For the sake of reference, in describing the embodiments of the present invention, the same parts as those in the conventional art will be denoted by the same reference numerals, and repeated description thereof will be omitted.

As shown in the figure, the main duct 11 is equipped with various facilities for controlling the indoor air.

A predetermined space is formed in the main duct 11 and both ends of the main duct 11 are connected to the air supply duct 12 connected to the room and the ventilation duct 13, And the air in the room is supplied to the main duct 11 through the ventilation duct 13 again.

The air supply duct 12 and the ventilation duct 13 are provided with fans for blowing air to the ends of the air duct 12 and the ventilation duct 13 on the side of the main duct 11. Preferably, And a ventilation fan 16 are provided.

The air supply duct 12 and the ventilation duct 13 are divided into a plurality of branches in the room located in the air supply duct 12 and the ventilation duct 13 to form an air outlet and an air inlet, Air is supplied to the room, and the air in the room is supplied again to the main duct.

In addition, a supply mechanism for introducing the air required for air conditioning from the outside to the main duct 11 and a supply mechanism for supplying the air to the outside of the main duct 11, An exhaust port for exhausting is formed.

In order to control the condition of the indoor air, the cooling duct 20, the evaporative humidifier 100, and the heating coil 40 of the cooling unit are provided in the main duct 11, .

The cooling coil 20 corresponds to the evaporator of the cooling means and the cooling coil 20 is provided inside the main duct 11 and the expansion valve 25 is provided outside the main duct 11, , The receiver (24), the first condenser (22), and the compressor (21) are arranged in order, and a pipe through which the refrigerant circulates is connected.

The refrigerant circulates through the expansion valve 25 and the cooling coil 20 through the compressor 21, the first condenser 22 and the receiver 24 while undergoing the heat exchange and the phase change process, ) With the air passing through the main duct (11) to lower the temperature of the air.

Further, a cooling fan is installed on one side of the first condenser 22 so that heat exchange performance between the refrigerant and the outside air in the first condenser 22 is improved.

Here, a pipe connecting the compressor 21 and the first condenser 22, a pipe connecting the compressor 21 and the second condenser 22-1, and a pipe connecting the first condenser 22 and the second condenser 22 -1), a first direction switching valve 50 for controlling the flow of the refrigerant is installed at the intersection of the pipes connecting the first direction switching valve 50 and the second switching valve 50. The first direction switching valve 50 is preferably a four-way valve.

That is, a first direction switching valve 50 for selectively connecting the compressor 21, the first condenser 22 and the second condenser 22-1 is provided. The compressor 21 and the first direction switching valve The first condenser 22 and the first condenser 22 are connected to each other by a first pipe 60. The first directional control valve 50 and the first condenser 22 are connected to each other by a second pipe 61, The switching valve 50 is connected to the third pipe 62 and the first direction switching valve 50 and the second condenser 22-1 or the receiver 24 are connected by a fourth pipe 63 .

Therefore, the refrigerant having passed through the compressor 21 in accordance with the changeover direction of the first directional control valve 50 passes through the first condenser 22 or directly to the second condenser 22-1 or the receiver 24 The operating relationship therebetween will be described later.

A second direction switching valve 52 is provided at one end of the fourth pipe 63. The second direction switching valve 52 connects the refrigerant having passed through the fourth pipe 63 to the second condenser 63, (22-1) or to supply it to the receiver (24).

Here, the second direction switching valve 52 also has a function of supplying the refrigerant having undergone the heat exchange through the second condenser 22-1 to the receiver 24.

That is, the second direction switching valve 52 includes a fifth pipe 64 for supplying the refrigerant that has passed through the fourth pipe 63 to the second condenser 22-1, A sixth pipe 65 for supplying the refrigerant passed through the second condenser 22-1 to the receiver 24 and a seventh pipe 66 for supplying the refrigerant having heat- ), Respectively.

An eighth pipe 67 provided with an expansion valve 25 and an eighth pipe 67 through which a refrigerant temporarily stored in the receiver 24 is supplied to a cooling coil (evaporator) And the ninth pipe 68 for returning the obtained refrigerant to the compressor 21 is provided in the same manner as in the prior art.

On one side of the main duct 11, a heating coil 40 of a type of heating means connected to a heat source is provided to raise the temperature of the air supplied to the room.

Therefore, in a state where the heating coil 40 is heated by electricity or a boiler, the air passing through the main duct 11 passes through the heating coil 40, is raised to a desired temperature, and then supplied to the room.

The operation of the air conditioner system according to the present invention will now be described.

First, the air supply fan 15 and the ventilation fan 16 are driven to supply the air of the main duct 11 to the room, the air in the room is ventilated again to the main duct 11, It receives the outside air through the air supply mechanism as much as possible, and sends out part of the air circulating through the air outlet to the outside.

At this time, the amount of air supplied through the air supply mechanism is maintained so that the air pressure of the room to be air-conditioned can be kept slightly higher than the outside air.

<Heating operation>

In such a state, when the heating operation is performed after leaving the step of simply blowing in the room, the temperature of the heating coil 40 may be increased to raise the temperature of the air passing through the heating coil 40. [

That is, the temperature of the heating coil 40 is raised by means of an electric method or a means such as a boiler, and air is passed through the heating coil 40 whose temperature has been raised in this manner, You can heat it.

<Heating and humidifying operation>

When the indoor air is dry and is equal to or lower than the set humidity during the heating operation, water may be sprayed through the nozzles of the evaporative humidifier 100.

That is, the water sprayed from the evaporative humidifier 100 is evaporated while being in contact with the air to be blown, and the evaporated water vapor is supplied to the room through the heating coil 40, so that the humidification is performed together with the heating.

<Cooling operation>

On the other hand, when the cooling operation is to be performed, the refrigerant may flow into the cooling coil (evaporator) 20.

5A, the refrigerant discharged from the compressor 21 passes through the first condenser 22 and is temporarily stored in the receiver 24, passes through the expansion valve 25 The air flowing into the cooling coil 20 is evaporated while exchanging heat with the air passing through the main duct 11 so that the temperature of the air passing through the main duct 11 is supplied to the room in a lowered state.

At this time, the first direction switching valve 50 is opened so that the refrigerant discharged from the compressor 21 passes through the first to fourth pipes 60, 61, 62 and 63, passes through the first condenser 22 , And the second direction switching valve (52) causes the refrigerant having passed through the fourth pipe (63) to be supplied to the receiver (24).

<Cooling Humidification Operation>

When the cooling operation is continuously performed as described above, the humidity of the room is gradually lowered. Therefore, in order to humidify the air in the air conditioner, water is sprayed to the evaporative humidifier 100 to generate water vapor. When the heat source for heating the water is provided, the room load is increased, There is a problem that the capacity needs to be increased.

Therefore, in the embodiment of the present invention, the refrigerant cycle is changed without using a separate heat source, so that the cooling and humidifying is performed over multiple stages.

1st stage humidification

During the above-described < cooling operation >, the evaporative humidifier 100 is caused to spray water.

Two-stage humidification

The refrigerant discharged from the compressor is continuously passed through the first condenser and the second condenser and temporarily stored in the receiver. After passing through the expansion valve, the refrigerant is introduced into the cooling coil and passes through the main duct And the air passing through the main duct is supplied to the room in a lowered state.

At this time, the water sprayed from the vaporization type humidifier is heat-exchanged with the refrigerant passing through the second condenser, so that it is heated to generate more steam when it comes into contact with the air and supply it to the room.

That is, in the second condenser 22-1, the refrigerant is higher in temperature than the air passing through the main duct 11, so that the condensed heat is discharged while passing through the second condenser 61. Accordingly, the condensed heat is transferred to the air passing through the main duct 11 while being discharged, but also to the humidifying water flowing down the humidifying element. When the condensation heat is transferred to the humidifying water, the temperature of the humidifying water rises, So that the overall humidifying performance is improved.

Here, the first direction switching valve 50 is opened so that the refrigerant discharged from the compressor 21 passes through the first to fourth pipes 60, 61, 62 and 63, passes through the first condenser 22 And the second direction switching valve 52 passes through the fourth pipe 63 through the fifth pipe 64 and then through the second condenser 22-1 installed in the evaporative humidifier 100, Through the seventh pipe 66 and the sixth pipe 65, to the receiver.

Three-stage humidification

The refrigerant discharged from the compressor 21 passes through only the second condenser 22-1 without passing through the first condenser 22 and is temporarily stored in the receiver 24 as shown by the bold line in FIG. And then flows into the cooling coil 20 through the expansion valve 25 and evaporates while exchanging heat with the air passing through the main duct 11 so that the temperature of the air passing through the main duct 11 is lowered .

At this time, the water sprayed from the evaporative humidifier 100 is heat-exchanged with the refrigerant passing through the second condenser 22-1, so that more water vapor is generated and supplied to the room when it comes into contact with the air.

Here, the first direction switching valve 50 is opened so that the refrigerant discharged from the compressor 21 passes through the first pipe 60 and the fourth pipe 63, passes through the first condenser 22, The second directional control valve 52 allows the refrigerant having passed through the fourth pipe 63 to flow into the evaporative humidifier 100 through the fifth pipe 64, 2 condenser 22-1 and then supplied to the receiver 24 through the seventh pipe 66 and the sixth pipe 65. [

<Dehumidifying operation>

When the humidity in the room is equal to or higher than the set value, the dehumidifying operation for moisture removal is performed. This dehumidification operation is performed on the same principle as the above-described cooling operation.

5A, the refrigerant discharged from the compressor 21 passes through the first condenser 22 and is temporarily stored in the receiver 24. After passing through the expansion valve 25 And flows into the cooling coil 20 to be heat-exchanged with the air passing through the main duct 11 to evaporate.

At this time, the water vapor contained in the air is condensed while passing through the cooling coil (evaporator) 20 and is removed, so that the dehumidification is performed.

<Dehumidification reheat operation>

When the dehumidifying operation is continued as described above, the room is cooled and the room temperature is lowered. Therefore, the heat source must be provided to the heating device to raise the room temperature, which causes an increase in energy consumption.

Therefore, in the embodiment of the present invention, the refrigerant cycle is changed without using a separate heat source, so that the dehumidification reheat is performed in multiple stages.

1 stage dehumidification reheat

The refrigerant discharged from the compressor 21 is continuously passed through the first condenser 22 and the second condenser 22-1 and temporarily stored in the receiver 24 as shown by the bold line in FIG. And then flows into the cooling coil 20 after passing through the expansion valve 25.

Therefore, the water vapor contained in the air is condensed and removed while passing through the cooling coil (evaporator) 20, so that the dehumidification is performed, and the heat is continuously exchanged through the second condenser 22-1, Is supplied to the room in an elevated state.

At this time, it is needless to say that the evaporative humidifier 100 does not spray water.

Two-stage dehumidification reheat

The refrigerant discharged from the compressor 21 passes only through the second condenser 22-1 without passing through the first condenser 22 and is temporarily stored in the receiver 24 as shown by a bold line in FIG. And then flows into the cooling coil 20 after passing through the expansion valve 25 to be heat-exchanged with the air passing through the main duct 11 to evaporate.

Therefore, the water vapor contained in the air is condensed and removed while passing through the cooling coil (evaporator) 20, so that the dehumidification is performed, and the heat is continuously exchanged through the second condenser 22-1, Is supplied to the room in an elevated state.

In this case as well, it is needless to say that the evaporative humidifier 100 does not spray water.

As described above, the energy saving type air conditioning system for constant temperature and humidity according to the present invention is characterized in that a first direction switching valve 50 and a second direction switching valve 52 are installed in a refrigerant cycle, In this case, since the cooling humidification and the dehumidification reheat are performed in multiple stages by using the condensation heat without using a separate heat source during the cooling humidification or the dehumidification reheat, the energy saving effect can be obtained / RTI &gt;

In addition, due to the installation of the first direction switching valve 50 and the second direction switching valve 52 for controlling the flow of the refrigerant, the refrigerant pipe connecting the respective components, that is, the first condenser 22, The length of the pipe connecting the second condenser 22-1 and the pipe connecting the receiver 24 is shortened and the length of the entire refrigerant pipe is reduced so that the facility is easy to install So that the equipment cost can be reduced.

The technical ideas described in the embodiments of the present invention as described above may be independently performed, or may be implemented in combination with each other. While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications, and variations will be apparent to those skilled in the art. It is possible. Accordingly, the technical scope of the present invention should be determined by the appended claims.

20: cooling coil 21: compressor
22: first condenser 22-1: second condenser
24: receiver unit 25: expansion valve
50: first direction switching valve 52: second direction switching valve

Claims (7)

A main duct in which an inner space is formed and air and outside air of the room are sucked and blown into the room;
A cooling device including a compressor, a first condenser connected to the compressor, a second condenser connected to the first condenser, and an expansion valve and a cooling coil (evaporator) selectively connected to the first condenser or the second condenser Means;
A vaporization type humidifier installed in the main duct, in which humidifying water is sprayed and in which one of the condensers is installed;
And heating means installed in the main duct for increasing the temperature of air passing through the main duct,
A first direction switching valve that prevents refrigerant discharged from the compressor from passing through the first condenser;
And a second direction switching valve for preventing the refrigerant discharged from the compressor from passing through or passing through the second condenser.
The method according to claim 1,
During the cooling operation or the dehumidification operation using the air conditioning system,
The refrigerant discharged from the compressor flows through the first direction switching valve, the first condenser, the second direction switching valve, the expansion valve, and then passes through the cooling coil (evaporator) Exchanges heat with air passing therethrough, and then returns to the compressor.
3. The method of claim 2,
In the first stage humidification operation for cooling using the air conditioning system,
Further comprising spraying water using the vaporization type humidifier. &Lt; RTI ID = 0.0 &gt;&lt; / RTI &gt;
The method according to claim 1,
In the first stage of dehumidification reheat using the air conditioning system,
The refrigerant discharged from the compressor passes through the first direction switching valve, passes through the first condenser, passes through the second direction switching valve, passes through the second condenser and the expansion valve, passes through a cooling coil (evaporator) Exchanges heat with air passing through the main duct, and then returns to the compressor.
5. The method of claim 4,
During the cooling two-stage humidification operation using the air conditioning system,
Wherein the sprayed water is sprayed using the evaporative humidifier to cause heat exchange with the refrigerant passing through the second condenser.
The method according to claim 1,
In the two-stage operation of the dehumidification reheat using the air conditioning system,
The refrigerant discharged from the compressor passes through the first direction switching valve and the second direction switching valve, passes through the second condenser and the expansion valve without passing through the first condenser, passes through the cooling coil (evaporator) Exchanges heat with air passing therethrough, and then returns to the compressor.
The method according to claim 6,
During the cooling three-stage humidification operation using the air conditioning system,
Wherein the sprayed water is sprayed using the evaporative humidifier to cause heat exchange with the refrigerant passing through the second condenser.

Images