KR19990079626A - Dehumidifier of Air Conditioner - Google Patents

Abstract

The dehumidifying apparatus of the air conditioner includes two first and second outdoor units installed to operate differently with refrigerant cycles required for heating and cooling during a dehumidification operation, and high temperature and high pressure refrigerant generated during heating operation of the first outdoor unit. A first indoor heat exchanger connected to a refrigerant path line independent from the first outdoor unit and heat-exchanging the indoor air passing through as heat is supplied to the hot air, and installed in an air discharge direction of one indoor unit; The second indoor unit is connected to the refrigerant path line independent from the second outdoor unit to heat exchange the indoor air passing through the heat generated by receiving the low-temperature low-pressure refrigerant during cooling operation with cold air, and installed in the air suction direction of the indoor unit. Since the heat exchanger, the air (cold air) heat exchanged in the second indoor heat exchanger according to the cooling operation of the second outdoor unit is 1 After passing through the first indoor heat exchanger that emits heat according to the heating operation of the outdoor unit, the mixed air (intermediate temperature air in which cold air and hot air are mixed) is discharged to remove moisture contained in the cold air to increase the dehumidification efficiency. Not only can it perform a dehumidification operation to maintain a constant temperature (23-25 ° C), and thus it is possible to remove the winter laundry drying function, as well as winter moisture.

Description

Dehumidifier of Air Conditioner

The present invention installs two indoor heat exchangers in one indoor unit in parallel and simultaneously connects these two indoor heat exchangers to two outdoor units with different refrigerant pass lines to perform cooling and heating operations. The present invention relates to an air conditioner, and more particularly, to a dehumidifying apparatus of an air conditioner that removes only moisture while maintaining a room temperature at a constant temperature (eg, 23-25 ° C.).

In general, air conditioners are classified into various types according to their function or configuration of the unit. In terms of function, air conditioners can be classified into cooling only, cooling and dehumidification only, and cooling and heating. It is divided into an integrated type that is integrated into windows and the like, and a separate type that separates and installs a cooling device on an indoor side and a heat dissipation and compression device on an outdoor side.

The separate air conditioner also includes a multi-type air conditioner that connects two or more indoor units to one outdoor unit (two compressors and two four-way valves) to air-condition a plurality of indoor spaces, respectively.

In the conventional separate type air conditioner, as shown in FIG. 1, the indoor unit 100 installed indoors and the outdoor unit 110 installed outdoors operate as one system, and heating and cooling operations as necessary. Can be.

The outdoor unit 110 includes a compressor 120 for compressing a refrigerant into a gas state of high temperature and high pressure, and a gas refrigerant compressed at high temperature and high pressure in the compressor 120 by heat exchanged with air blown by the outdoor fan 131 to form a low temperature. An outdoor heat exchanger (130) for cooling and condensing with a low pressure liquid refrigerant, and a capillary tube (135) for expanding under reduced pressure to a low-temperature, low-pressure free refrigerant that is easy to evaporate the low-temperature and high-pressure liquid refrigerant cooled and condensed in the outdoor heat exchanger (130). The indoor unit 100 converts the low-temperature, low-pressure free refrigerant passing through the capillary tube 135 into a refrigerant gas in a low-temperature low-pressure full gas state while being evaporated by heat exchange with air blown by the indoor fan 141. The indoor heat exchanger 140 is installed.

In the air conditioner configured as described above, since the refrigerant cycles of the cooling operation and the dehumidification operation are the same in the cooling and dehumidification operation, the refrigerant cycle is made in the solid arrow direction of FIG.

First, when the high temperature and high pressure gas refrigerant discharged from the compressor 120 of the outdoor unit 110 flows into the outdoor heat exchanger 130, the outdoor heat exchanger 130 stores the gas refrigerant compressed to high temperature and high pressure in the outdoor fan 131. Heat exchanged by the air blown by the) to force the cooling to condensate, the low-temperature high-pressure liquid refrigerant condensed in the outdoor heat exchanger 130 is introduced into the capillary tube (135).

The low temperature and high pressure liquid refrigerant introduced into the capillary tube 135 is expanded into a low temperature low pressure free refrigerant which is easy to evaporate, and flows into the indoor heat exchanger 140 installed in the indoor unit 100, and the refrigerant in the indoor heat exchanger 140. Evaporates and vaporizes, takes the heat from the air blown by the indoor fan 141 to cool the indoor air, and then discharges the cooled air (cold air) to the room to perform cooling or dehumidification operation, and the indoor heat exchanger. The low temperature and low pressure gas refrigerant cooled at 140 is converted into refrigerant gas to repeat the above-described refrigerant cycle.

At this time, if the indoor unit 100 is a cooling operation, the indoor fan 141 is driven according to the air volume set by the user to perform a cooling operation. If the indoor unit 100 is a dehumidification operation, the indoor fan 141 is lowered to the lowest air volume. Perform dehumidification operation.

However, according to the dehumidification operation method of the air conditioner configured as described above, when the dehumidification operation is performed at room temperature during the rainy season or the like due to the high or low humidity, only the air volume of the room is operated by the same refrigerant cycle as the cooling operation. At this time, since cold cold air heat-exchanged in the indoor heat exchanger 140 is discharged, the actual indoor temperature is dropped, and the temperature of the indoor heat exchanger 140 is so low that the dehumidification efficiency is remarkably lowered.

In addition, since the dehumidification operation cannot be set arbitrarily by the user, the electric heater has been separately installed to realize a dehumidifying operation without cold air (cold air).

Accordingly, the present invention has been made to solve the above problems, and an object of the present invention is to install two indoor heat exchangers in one indoor unit and simultaneously configure each refrigerant pass line in these two indoor heat exchangers to provide two outdoor units. As the cooling and heating operations are performed separately, the high-temperature and high-pressure refrigerants and the low-temperature and low-pressure refrigerants pass through different refrigerant path lines to remove moisture without generating cold air, thereby maintaining the room temperature at a constant temperature and improving dehumidification efficiency. It is to provide a dehumidifier of the conditioner.

Dehumidifier of the air conditioner according to the present invention made to achieve the above object, in the dehumidification apparatus of the air conditioner, two first and second installed so as to operate differently with the refrigerant cycle required for heating and cooling during dehumidification operation The indoor unit is connected to a refrigerant path line independent from the first outdoor unit to heat the indoor air passing through the hot air while being heated by receiving the high temperature and high pressure refrigerant generated during the heating operation of the first outdoor unit and at the same time. The first indoor heat exchanger installed in the air discharging direction of the second outdoor unit and a refrigerant path line independent from the second outdoor unit to heat the indoor air passing through the cold air by being supplied with a low-temperature low-pressure refrigerant during cooling operation of the second outdoor unit with cold air. And a second indoor heat exchanger connected to the air suction direction of the one indoor unit at the same time. It shall be.

1 is a refrigerant cycle diagram of a conventional air conditioner;

2 is a refrigerant cycle diagram of an air conditioner according to the present invention;

3 is a perspective view showing two indoor heat exchangers according to the present invention.

Explanation of symbols on the main parts of the drawings

10: indoor unit 20, 21: first and second outdoor unit

90,91: First and second indoor heat exchanger

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings, FIGS. 2 and 3.

2 is a refrigerant cycle diagram of an air conditioner according to the present invention, in which one indoor unit 10 installed indoors and two first and second outdoor units 20 and 21 installed outdoors are provided in one system. It can be operated by air conditioner and heating and cooling as needed.

The first and second outdoor units 20 and 21 have first and second compressors 30 and 31 for compressing a refrigerant into a gaseous state of high temperature and high pressure, respectively, and the first and second outdoor units 20 and 21 according to operating conditions (cooling or heating). First and second four-way valves 40 and 41 for converting the flow of gas refrigerant compressed at high temperature and high pressure in the first and second compressors 30 and 31, respectively, and the first and second compressors during cooling operation. First and second outdoor heat exchangers 50 and 51 for cooling and condensing the gas refrigerant compressed at high temperature and high pressure to the liquid refrigerant having low temperature and high pressure, respectively, at 30 and 31, and the first and second outdoor heat exchangers. First and second outdoor fans 50a and 51a which suck outdoor air and blow air to the first and second outdoor heat exchangers 50 and 51 so that heat exchange is smoothly performed at 50 and 51. And a low-temperature low-pressure free refrigerant, which is connected to the indoor unit 10 and is easy to evaporate the low-temperature, high-pressure liquid refrigerant that has been cooled and condensed in the first and second outdoor heat exchangers 50 and 51, respectively. Low temperature and low pressure that is easily evaporated together with the first and second capillary tubes 60 and 61 for expanding under reduced pressure and the refrigerant liquefied in the indoor heat exchanger described later in the heating operation. First and second heating capillary tubes 70 and 71 for expanding under reduced pressure with a free refrigerant respectively, and first and second one-way valves for turning on the refrigerant flow in one direction so that the refrigerant passes only during the cooling operation. 80 and 81 are provided.

On the other hand, the indoor unit 10, the first to convert the low-temperature low-pressure free refrigerant passing through the first and second capillary tubes (60, 61) during the cooling operation to a low-temperature low-pressure full gas refrigerant gas, respectively. And a second indoor heat exchanger (90, 91) and an indoor fan (90a) for circulating the air in the room so as to facilitate heat exchange in the first and second indoor heat exchangers (90, 91). .

At this time, the first indoor heat exchanger (90) according to the heating operation of the first outdoor unit 20, when the first and second outdoor units 20, 21 perform the heating and cooling operation respectively during the dehumidification operation The high temperature and high pressure gas refrigerant discharged from the first compressor (30) is connected to an independent refrigerant path line, and the second indoor heat exchanger (91) is the first and second outdoor units (20) during the dehumidification operation. When 21) performs the heating and cooling operation, respectively, the freeze refrigerant having a low temperature and low pressure through the second capillary tube 61 is connected to the independent refrigerant pass line according to the cooling operation of the second outdoor unit 21. In addition, the indoor fan 90a is freely installed at a rear side of the second indoor heat exchanger 91 at a predetermined interval.

Here, the first indoor heat exchanger (90) and the second indoor heat exchanger (91) are heat exchanged by a second indoor heat exchanger (91) which performs a cooling operation during the dehumidification operation as shown in FIG. When cold air comes into contact with the surface of the first indoor heat exchanger 90 performing heating operation, moisture contained in the cold air is removed by the hot heat generated by the first indoor heat exchanger 90 and at the same time, It is arranged in parallel with each other at a certain interval on the front and back sides so as to be maintained at a temperature and discharged to the room.

Next, the operation and effect of the present invention configured as described above will be described.

When the first and second compressors 30 and 31 and the first and second outdoor fans 50a and 51a are turned on by applying power to the air conditioner, the first and second outdoor units 20 may be turned on. The high temperature and high pressure gas refrigerant from the first and second compressors 30 and 31 of the 21 is passed through the first and second four-way valves 40 and 41 to the first and second outdoor heat exchangers 50 ( 51, and the first and second outdoor heat exchangers (50) and (51) heat exchange the gas refrigerant compressed to high temperature and high pressure with air blown by the first and second outdoor fans (50a) (51a). And condensed by forced cooling, and the low-temperature and high-pressure liquid refrigerant condensed in the first and second outdoor heat exchangers 50 and 51 passes through the first and second one-way valves 80 and 81. 2 flows into the capillary tubes 60 and 61.

In addition, the low-temperature and high-pressure liquid refrigerant introduced into the first and second capillary tubes 60 and 61 is expanded into a low-temperature, low-pressure free refrigerant which is easy to evaporate, and the first and second indoor heat exchangers 90 installed in the indoor unit 10. (91) are respectively introduced along different refrigerant paths, and the first and second indoor heat exchangers (90, 91) are low temperature and low pressure reduced through the first and second capillaries (60, 61) When free refrigerant of evaporates and evaporates while passing through several heat pipes (not shown), heat is removed from the air blown by the indoor fan 90a to cool the indoor air, and then the cooled air (cold air) is transferred to the room. The cooling operation to discharge is performed.

At this time, the low-temperature low-pressure gas refrigerant cooled in the first and second indoor heat exchangers 90 and 91 again passes through the first and second four-way valves 40 and 41 to the first and second compressors 30. The first and second outdoor units are converted into refrigerant gas of high temperature and high pressure by the compression action of the first and second compressors 30 and 31 by repeating the refrigerant cycle in the direction of the solid arrow of FIG. 20 and 21 perform indoor cooling.

On the other hand, when the dehumidification operation signal is input during the cooling operation, the first outdoor unit 20 has refrigerant in the first compressor 30 → the first four-way valve 40 → the first indoor heat exchanger according to the dotted arrow direction of FIG. 2. 90) → first capillary tube 60 → first heating capillary tube 70 → first outdoor heat exchanger 50 → first four-way valve 40 → first compressor 30 to form a refrigerant cycle. .

That is, when the first four-way valve 40 is turned on, the high-temperature, high-pressure gas refrigerant discharged from the first compressor 30 of the first outdoor unit 20 passes through the first four-way valve 40 to the indoor unit 10. When entering the first indoor heat exchanger (90) installed in the), the first indoor heat exchanger (90) heats the air blown by the indoor fan (90a) by cooling water or air at room temperature to form a refrigerant at room temperature and high pressure. The heating operation which discharges the warmed air (hot air) to a room by cooling is performed.

In addition, the refrigerant liquefied in the first indoor heat exchanger (90) expands under reduced pressure to a low-temperature, low-pressure free refrigerant that is easily evaporated through the first capillary tube (60) and the first heating capillary tube (70), and thus, the first outdoor heat exchanger (50). ), The first outdoor heat exchanger (50) exchanges and cools the low-temperature low-temperature free refrigerant with air blown by the first outdoor fan (50a), and cools the first outdoor heat exchanger (50). The low-temperature low-pressure gas refrigerant flows back into the first compressor 30 through the first four-way valve 40 and is converted into a refrigerant gas of high temperature and high pressure by the compression action of the first compressor 30. The heating cycle is repeated by repeating the refrigerant cycle in the dotted arrow direction in FIG.

At this time, since the second four-way valve 41 of the second outdoor unit 21 maintains the off state during the cooling operation, the second outdoor unit 21 repeatedly cools the refrigerant cycle in the solid arrow direction of FIG. 2. Is done.

As described above, when the first outdoor unit 20 performs the heating operation and the second outdoor unit 21 performs the cooling operation during the dehumidification operation during the cooling operation, the high temperature and high pressure gas refrigerant discharged from the first compressor 30 is The low-temperature low-temperature free refrigerant introduced into the first indoor heat exchanger 90 installed in the indoor unit 10 along the independent refrigerant path line and decompressed through the second capillary tube 61 is the indoor unit 10 along the independent refrigerant path line. The refrigerant cycle flowing into the second indoor heat exchanger 91 installed therein is repeated.

Therefore, the air (cooling air) passing through the heat exchange in the second indoor heat exchanger 91 in accordance with the cooling operation of the second outdoor unit 21 passes through the first indoor heat exchange in which heat is radiated according to the heating operation of the first outdoor unit 20. By passing through the air 90 again to form a mixture of air (intermediate temperature air mixed with cold and hot air) and at the same time discharged to the discharge port of the indoor unit 10 to remove the moisture contained in the cold air as well as maintaining a constant temperature Perform dehumidification operation.

On the other hand, when the heating operation signal is input to the first and second outdoor units 20 and 21, the refrigerant is first and second compressors 30 and 31 → first and second in accordance with the dotted arrow direction of FIG. Four-way valve (40) (41) → first and second indoor heat exchanger (90) (91) → first and second capillary tubes (60) (61) → first and second heating capillaries (70) (71) ¡Æ first and second outdoor heat exchangers (50) (51) → first and second four-way valves (40) (41) → refrigerant cycles circulated in the order of first and second compressors (30) (31) do.

That is, the high-temperature, high-pressure gas refrigerant discharged from the first and second compressors 30 and 31 of the first and second outdoor units 20 and 21 opens the first and second four-way valves 40 and 41. When the first and second indoor heat exchangers 90 and 91 are installed in the indoor unit 10 through the different refrigerant paths, respectively, the first and second indoor heat exchangers 90 and 91 provide indoors. The air passing through the first and second indoor heat exchangers 90 and 91 by cooling the air blown by the fan 90a with the coolant or air at room temperature and cooling with a high-temperature coolant is warmed air (hot air ) Is discharged into the room to perform heating operation.

The refrigerant liquefied in the first and second indoor heat exchangers 90 and 91 is evaporated through the first and second capillary tubes 60 and 61 and the first and second heating capillaries 70 and 71. The low-temperature, low-pressure free refrigerant is expanded and decompressed into the first and second outdoor heat exchangers (50) and (51), and the first and second outdoor heat exchangers (50) and (51) provide a low-temperature, low-pressure free refrigerant. The low-temperature low-pressure gas refrigerant cooled by heat exchange with air blown by the first and second outdoor fans 50a and 51a and cooled by the first and second outdoor heat exchangers 50 and 51 may be a first refrigerant. And a high temperature and high pressure refrigerant by the first and second compressors 30 and 31 introduced into the first and second compressors 30 and 31 again through the second four-way valves 40 and 41. By converting to gas, the first and second outdoor units 20 and 21 perform heating operation in which the refrigerant cycle is repeated in the dotted arrow direction in FIG.

As described above, according to the dehumidifying apparatus of the air conditioner according to the present invention, two first and second indoor heat exchangers are installed in parallel in parallel at a predetermined interval in one indoor unit, and the first and second of these two units are installed. Since the indoor heat exchanger is configured to be connected to two first and second outdoor units with different refrigerant pass lines, respectively, to perform cooling operation and heating operation, the second indoor heat exchange is performed according to the cooling operation of the second outdoor unit. Air (cold air) heat-exchanged in the air passes through the first indoor heat exchanger, which emits heat according to the heating operation of the first outdoor unit, and then forms and discharges mixed air (intermediate temperature air in which cold and warm air are mixed). In addition to improving the dehumidification efficiency by removing the moisture contained, it is possible to perform a dehumidification operation to maintain a constant temperature (23-25 ℃), this is the summer laundry The drying function, of course, is effective in removing moisture in winter.

Claims (2)

In the dehumidifier of the air conditioner, Two first and second outdoor units installed to operate differently with refrigerant cycles required for heating and cooling during dehumidification operation, The air is discharged from a single indoor unit while being connected to a refrigerant path line independent from the first outdoor unit to heat the indoor air passing through the heat by receiving the high temperature and high pressure refrigerant generated during the heating operation of the first outdoor unit with hot air. A first indoor heat exchanger installed in a direction, In the cooling operation of the second outdoor unit, the refrigerant is supplied at low temperature and low pressure, and is connected to a refrigerant path line independent of the second outdoor unit to heat-exchange the indoor air passing through the air with cold air, and at the same time, the air suction direction of the one indoor unit. Dehumidifier of the air conditioner, characterized in that consisting of a second indoor heat exchanger installed in. The method of claim 1, The first indoor heat exchanger and the second indoor heat exchanger are connected to the cold air by the hot heat generated in the first indoor heat exchanger when the cold air passing through the first indoor heat exchanger is exchanged by the second indoor heat exchanger during the dehumidification operation. Dehumidifier of the air conditioner, characterized in that installed in parallel to each other at a predetermined interval in the indoor unit so that the contained moisture is removed and discharged.