KR100268261B1 - Airconditioner having dehumidificating function - Google Patents

Abstract

PURPOSE: An air conditioner having dehumidification is provided to prevent an indoor space from overcooling by circulating an additional fluid during dehumidification of an air conditioner. CONSTITUTION: An air conditioner consists of: a second pipe unit(170) having a first pipe(170') guiding a fluid to an indoor heat exchanger(210) from an outdoor heat exchanger, and a second pipe(170") flowing the fluid reversely; a pump(150) connected to the second pipe to circulate the fluid between the indoor and the outdoor heat exchanger; and a valve(180) connected to the first pipe to open/shut the second pipe unit. The pump and the valve are connected to a microcomputer(300). The microcomputer drives the pump by opening the valve. The fluid flows into the outdoor and the indoor heat exchanger from the second pipe unit. Therefore, an indoor space is prevented from overcooling by keeping temperature regular with the heat.

Description

Air conditioner with dehumidification

The present invention relates to an air conditioner, and more particularly, to an air conditioner having a dehumidification function for preventing an overcooling of a room by circulating a separate fluid when performing the dehumidification function of the air conditioner.

In general, an air conditioner is a device used for cooling or heating indoors by using a refrigerant cycle. In general, a liquid is vaporized when the pressure is kept constant and the temperature is raised. It has the property of liquefying. Here, when the liquid vaporizes, it absorbs the surrounding heat, and when the liquid is liquefied, the heat is released to perform the heat exchange action of cooling or heating.

In addition, such an air conditioner performs the dehumidification function as well as the cooling or heating functions described above. Generally, a cooling dehumidification method of cooling indoor air is generally used. That is, the aforementioned cooling dehumidification method refers to a method of converting water vapor in the air into a liquid (dew) and removing it from the air by cooling the indoor air below the saturation temperature.

1 is a block diagram showing a conventional air conditioner having a dehumidification function. Accordingly, the outdoor unit 10 includes a compressor 11 for compressing a refrigerant at high temperature and high pressure, and an outdoor unit for dissipating heat of high temperature / high pressure introduced from the compressor 11 to the outside to condense the liquid refrigerant at low temperature / low pressure. A heat exchanger 12 and a capillary tube 13 for converting the liquid refrigerant introduced from the outdoor heat exchanger 12 into a low temperature / low pressure refrigerant are provided. In addition, an outdoor fan 14 is provided to blow air to the outdoor heat exchanger 12 to cool it.

On the other hand, the indoor unit 20 is provided with an indoor heat exchanger 21 for absorbing the surrounding heat while the liquid refrigerant introduced from the capillary tube 13 evaporates, and circulates the indoor air near the indoor heat exchanger 21. An indoor fan 22 is provided. In addition, the microcomputer 30 for controlling the driving of the compressor 11, the outdoor fan 14 and the indoor fan 22, an operation key 31 for applying a user's key input to the microcomputer 30, The temperature sensor 32 is provided to detect the room temperature and apply it to the microcomputer 30.

Referring to the cooling operation and dehumidification of the conventional air conditioner configured as described above, first, the user inputs various operation commands such as temperature setting and operation start through the operation key 31, and the microcomputer 30 detects this. The cooling operation is started by driving the compressor 11, the outdoor fan 14, and the indoor fan 22.

That is, the microcomputer 30 applies the driving power by turning on the compressor 11, the outdoor fan 14, and the indoor fan 22. Accordingly, the refrigerant is circulated through the refrigerant cycle. And the indoor fan 22 sucks / blows wind to each of the outdoor heat exchanger 12 and the indoor heat exchanger 21. At this time, the outdoor unit 10 compresses the refrigerant from the compressor 11 at high temperature and high pressure, and the compressed refrigerant is circulated to the outdoor heat exchanger 12 to condense to a low temperature liquid refrigerant. That is, outdoor air is blown toward the outdoor heat exchanger 12 by the rotation of the outdoor fan 14 to radiate heat of high temperature to the outside. In addition, the refrigerant condensed through the outdoor heat exchanger 12 flows into the capillary tube 13, and is reduced in pressure through the capillary tube 13 and converted into a low temperature / low pressure refrigerant.

In addition, in the indoor unit 20, the low temperature / low pressure refrigerant passing through the capillary tube circulates and flows into the indoor heat exchanger 21. In addition, the indoor air is circulated through the indoor heat exchanger 21 by the rotation of the indoor fan 22 to exchange heat with the low temperature / low pressure refrigerant therein. Therefore, the room is cooled to a predetermined temperature by the air cooled through the heat exchange process.

Thereafter, the microcomputer 30 detects the indoor temperature through the temperature sensor 32 and compares / determines whether the current indoor temperature is lowered below a preset input temperature. Here, when the indoor temperature does not reach the set temperature, the cooling operation is continued, while when the indoor temperature reaches the set temperature, that is, when the indoor temperature is lower than the set temperature, the compressor 11 and the indoor fan 22 are operated. And the outdoor fan 14 and the like are turned off to stop the cooling operation.

In addition, when the dehumidification function is performed, the cooling function is intermittently performed for a predetermined time, thereby cooling the indoor air below a saturation temperature, thereby converting water vapor in the air into liquid (dew) and removing it from the air. .

However, such a conventional air conditioner performs a cooling dehumidification function in order to remove moisture in the room. In particular, when performing a long time dehumidification function in a humid season of the room, that is, during the rainy season, the room temperature is relatively high. There was a problem that the room is overcooled by lowering.

Accordingly, an object of the present invention devised to solve such a problem is to provide an air conditioner having a dehumidification function to prevent the supercooling of the room by circulating a separate fluid when performing the dehumidification function of the air conditioner.

1 is a control block diagram showing an air conditioner having a conventional dehumidification function,

2 is a control block diagram showing a preferred embodiment of an air conditioner having a dehumidifying function according to the present invention;

3 is an exploded perspective view illustrating an outdoor heat exchanger of an air conditioner having a dehumidifying function according to the present invention.

Explanation of symbols on the main parts of the drawings

110: compressor 120: outdoor heat exchanger

123: first heat exchange pipe 124: second heat exchange pipe

130: capillary 150: pump

160: the first pipe section 170: the second pipe section

180 valve 210 indoor heat exchanger

300: micom

Features of the air conditioner having a dehumidification function according to the present invention for achieving the above object, to the air conditioner for performing the cooling or heating operation through a refrigerant cycle consisting of a first pipe connecting the outdoor heat exchanger and the indoor heat exchanger. A second pipe portion for circulating fluid therein to transfer heat from the outdoor heat exchanger to the indoor heat exchanger, and to pump the fluid inside the second pipe portion to circulate to the outdoor heat exchanger and the indoor heat exchanger. A pump and a valve formed at one side of the second pipe part to connect or open the internal passage as necessary and connected to the first pipe part and the second pipe part, respectively, to pass through the outdoor and indoor heat exchangers side by side. The first heat exchange pipe and the second heat exchange pipe are provided.

In addition, the pump and the valve is operated / controlled by a microcomputer, the fluid circulated into the second pipe portion is preferably an antifreeze.

Accordingly, by performing the dehumidification function according to the cooling and dehumidifying method of the air conditioner, by maintaining an appropriate temperature of the room, it is possible to prevent the overcooling of the room and to save energy by using the heat of the outdoor heat exchanger as it is.

Hereinafter, a preferred embodiment of an air conditioner having a dehumidifying function according to the present invention will be described in detail with reference to the accompanying drawings.

2 is a control block diagram showing a preferred embodiment of an air conditioner having a dehumidification function according to the present invention, Figure 3 is an exploded perspective view showing an outdoor heat exchanger of the air conditioner having a dehumidification function according to the present invention.

2, the compressor 110, the outdoor heat exchanger 120, the capillary tube 130, and the indoor heat exchanger 210 are provided, and each of the refrigerant is circulated by the first pipe part 160. Here, the compressor 110, the outdoor heat exchanger 120 and the capillary tube 130 is provided in the outdoor unit 100, the indoor heat exchanger 210 is provided in the indoor unit 200, respectively. In addition, the outdoor unit 100 is provided with an outdoor fan 140 that blows air to the outdoor heat exchanger 120 to cool it, and the indoor unit 200 circulates indoor air near the indoor heat exchanger 210. An indoor fan 220 is provided.

The compressor 110 compresses the refrigerant at high temperature and high pressure, and the outdoor heat exchanger 120 radiates heat of high temperature / high pressure introduced from the compressor 110 to the outside to condense the liquid refrigerant at low temperature / low pressure. The capillary tube 130 converts the liquid refrigerant introduced from the outdoor heat exchanger 120 into a low temperature / low pressure refrigerant. In addition, the indoor heat exchanger 210 absorbs the surrounding heat while the liquid refrigerant introduced from the capillary tube 130 evaporates.

In addition, a second pipe part 170 through which fluid is circulated therein is provided so that heat of the outdoor heat exchanger 120 is transferred to the indoor heat exchanger 210 during the dehumidification operation, and the second pipe part 170 is provided. The internal fluid is circulated to the outdoor heat exchanger 120 and the indoor heat exchanger 210 by the pump 150. In addition, the valve 180 is formed on any one side of the second pipe portion 170 to open or shut off the internal passage as necessary, and the pump 150 and the valve 180 will be described later. The fluid that is operated / controlled by the 300 and circulated into the second pipe 170 is preferably an antifreeze.

The microcomputer 300 controls the operation of the pump 150 as described above and controls the driving of the compressor 110, the outdoor fan 140, and the indoor fan 220. In addition, an operation key 310 for applying a user's key input to the microcomputer 300 and a temperature sensor 320 for detecting an indoor temperature and applying the microcomputer 300 to the microcomputer 300 are provided.

3, the first heat exchange pipe 123 and the second heat exchange pipe 124 connected to the first pipe part 160 and the second pipe part 170 to pass through the outdoor heat exchanger 120 side by side, respectively. ), And the outdoor heat exchanger 120 includes a plurality of heat dissipation fins 122 through which the first heat exchange pipe 123 and the second heat exchange pipe 124 pass, and fixing plates 121 and 121 ′ at both sides thereof. ) Is provided. In addition, although not illustrated in the drawings, the indoor heat exchanger 210 also preferably has a heat exchange pipe 123 and 124 formed in parallel with each other.

Referring to the operation of the present invention configured as described in more detail as follows.

First, as the dehumidification operation is selected by the user's key input, the compressor 110 is driven for a predetermined time while the outdoor fan 140 is turned off. That is, the microcomputer 300 suppresses heat dissipation of the outdoor heat exchanger 120 by increasing the temperature by passing a predetermined time while the compressor 110 is turned on and the outdoor fan 140 is turned off, and then the compressor 110 is increased. Stop).

Thereafter, when a predetermined time elapses after the compressor 110 is turned off, the microcomputer 300 opens the valve 180 to secure the circulation passage of the fluid and then drives the pump 150 for a predetermined time. In more detail, the microcomputer 300 turns on the pump 150 to circulate the fluid inside the second pipe unit 170 to the outdoor heat exchanger 120 and the indoor heat exchanger 210. The heat of 120 is transferred to the indoor heat exchanger 210. That is, high temperature refrigerant is circulated through the first pipe part 160 to the first heat exchange pipe 123 of the outdoor heat exchanger 120 by the cooling operation.

Therefore, the heat is transferred to the second heat exchange pipe 124 formed in parallel with the first heat exchange pipe 123 to convert the fluid inside the high temperature. The fluid is circulated along the second piping unit 170 to the indoor heat exchanger 210, and by maintaining the proper temperature of the room by this heat to prevent overcooling of the room.

Thereafter, when a predetermined time elapses, the pump 150 is turned off and the valve 180 is shut off. In this case, when the valve 180 is not blocked, the fluid inside the second pipe part 170 may be circulated due to the temperature difference between the outdoor heat exchanger 120 and the indoor heat exchanger 210. Opening or blocking the valve 180 as necessary to prevent malfunction and deterioration accordingly.

As described above, according to the air conditioner having a dehumidifying function according to the present invention, there is an effect of preventing the overcooling of the room by maintaining an appropriate temperature of the room when performing the dehumidifying function according to the cooling dehumidifying method of the air conditioner.

In addition, there is another effect that can save energy by using the heat of the outdoor heat exchanger as it is without the need to supply additional energy.

The present invention is not limited to the above-described specific preferred embodiments, and various modifications can be made by any person having ordinary skill in the art without departing from the gist of the present invention claimed in the claims. Of course, such changes will fall within the scope of the claims.

Claims (2)

Compressor 110 for compressing the refrigerant at high temperature and high pressure, an outdoor heat exchanger 120 for condensing the high temperature / high pressure heat introduced into the compressor 110 to the low temperature / low pressure liquid refrigerant state, and the outdoor The outdoor unit 100 includes a capillary tube 130 for reducing the liquid refrigerant introduced from the heat exchanger 120 and converting the refrigerant into a low temperature / low pressure refrigerant so that the refrigerant is circulated by the first pipe unit 160. ; An indoor unit including an indoor heat exchanger 210 that absorbs ambient heat while the liquid refrigerant introduced from the capillary tube 130 evaporates, and an indoor fan 220 that circulates indoor air in the vicinity of the indoor heat exchanger 210. 20; A microcomputer 300 for controlling driving of the compressor 110, the outdoor fan 140, and the indoor fan 220; An operation key 310 for applying a user's key input to the microcomputer 300; And in the air conditioner having a dehumidification function having a temperature sensor for detecting the indoor temperature applied to the microcomputer 300, the heat of the outdoor heat exchanger 120 is transferred to the indoor heat exchanger 210 during dehumidification. A second pipe section 170 for guiding fluid from the outdoor heat exchanger 120 to the indoor heat exchanger 210 and the fluid at the indoor heat exchanger 210. A second pipe section 170 including a second pipe 170 "for guiding the outdoor heat exchanger 120; circulating the fluid between the outdoor heat exchanger 120 and the indoor heat exchanger 210; A pump (150) connected to the second pipe (170 ") to make it; And a valve 180 connected to the first pipe 170 ′ to open and close the second pipe part as necessary, and the pump 150 and the valve 180 are the microcomputer 300. The microcomputer 300 is connected to the microcomputer 300 so as to receive driving control, and each of the outdoor heat exchanger 120 and the indoor heat exchanger 210 is the first pipe part 160 and the second pipe part 170. And a first heat exchange pipe (123) and a second heat exchange pipe respectively connected to the first and second heat exchange pipes to pass through the outdoor and indoor heat exchangers, respectively. The air conditioner of claim 1, wherein the fluid circulated into the second pipe part is an antifreeze solution.