KR100629347B1 - Pre-cooler for ventilation of air conditioner - Google Patents

Abstract

The present invention relates to a ventilation precooler for an air conditioner capable of preventing an increase in room temperature and an increase in load due to moisture by lowering the temperature and humidity of air sucked from the outside for the purpose of ventilating the room during ventilation.

The present invention can be cooled by the condensed water in the evaporator, the evaporator that absorbs the heat of the surrounding air as the refrigerant evaporates, the water tank in which the condensed water generated on the surface of the evaporator falls and fresh water, and the ventilation air sucked from the outside It consists of an air duct installed in the reservoir so that the air sucked from the outside for the purpose of ventilation is cooled by the condensed water generated in the evaporator, thereby raising the room temperature during the ventilation and the load of the air conditioner There is an advantage that the increase is minimized.

Air Conditioner, Indoor Unit, Ventilator, Precooler, Condensate, Sensible Heat, Latent Heat

Description

Pre-cooler for ventilation of air conditioners {Pre-cooler for ventilation of air conditioner}

1 is an internal configuration schematically showing a ventilation device according to the prior art,

Figure 2 is a perspective view showing a precooler for ventilation of the air conditioner according to the prior art,

3 is an internal configuration schematically showing a ventilation device of the air conditioner according to the present invention,

Figure 4 is a perspective view showing an embodiment of a precooler for ventilation of the air conditioner according to the present invention,

5 is a partially cutaway state diagram showing an embodiment of a ventilation precooler of an air conditioner according to the present invention;

6 is a perspective view showing another embodiment of a precooler for ventilation of an air conditioner according to the present invention;

7 is a partially cutaway state diagram showing another embodiment of the ventilation precooler of the air conditioner according to the present invention;
8 is an exploded perspective view illustrating an indoor unit of a general air conditioner.

<Explanation of symbols on main parts of the drawings>

52: first ventilation passage 54: second ventilation passage

56 case 58: precooler

60: drain hose 62: blower for ventilation

72,82: reservoir 74: air duct

76,88: entrance 78,90: exit

84: supply pipe 86: exhaust pipe

The present invention relates to a precooler for ventilation of an air conditioner, and in particular, by lowering the temperature and humidity of the air sucked from the outside for the purpose of ventilating the room during ventilation, it is possible to prevent an increase in the room temperature and an increase in load due to moisture. To a precooler for ventilation of an air conditioner.

In general, an air conditioner is a device that processes and supplies intake air to a building or a room to maintain indoor air in a comfortable condition. The air conditioner is classified into a separate type or a split type and a window type.

The separate type and the integrated type are functionally the same, but the separate type is a cooling device installed in the indoor side and a heat dissipation and compression device installed in the outdoor side to connect the two separated devices by refrigerant piping, and the integrated type functions as cooling heat dissipation. Integrate the hole in the wall of the house or hang the device on the window is installed directly.

Here, the indoor unit of the general detachable air conditioner, as shown in Figure 8, the cabinet 20 is mounted on one side of the room, coupled to the front of the cabinet 20, the inlet port 22A and the discharge port 22B is formed An evaporator 24 installed in an inner space formed by the front panel 22 and the cabinet 20 and the front panel 22 and absorbing heat of indoor air while the refrigerant inside is evaporated, and the evaporator 24. A blower 26 for forcibly circulating indoor air in a furnace, a drain pan 28 formed at a lower end of the evaporator 26 to collect condensate flowing from the evaporator, and one side of the cabinet 20 It is configured to include a ventilator (1) for ventilating the room by supplying clean air to the outside.

Here, the drain pan 28 collects condensed water generated on the surface of the evaporator in the process of heat exchange with the refrigerant of the evaporator 24, and is discharged to the outside through the drain hose 30 connected to one side. .

The ventilator 1 discharges indoor air to the outside when the air in the room becomes cloudy and supplies clean air to the outside.

1 is a schematic diagram illustrating an internal configuration of a ventilation apparatus according to the prior art, and FIG. 2 is a perspective view illustrating a precooler for ventilation of an air conditioner according to the prior art.

As shown in FIG. 1 and FIG. 2, a conventional air conditioner ventilator includes a first ventilation path 2 for discharging muddy air to the outside and a second ventilation for supplying clean air to the indoor unit. A case 6 embedded in one side of the indoor unit so as to communicate with the passage 4, the first ventilation passage 2 and the second ventilation passage 4, and the indoor air A embedded in the case 6; And a precooler (8) having heat exchange between the air (B) and the ventilation air (B), and installed on one side of the precooler (8) to generate a blowing force of indoor air (A) and ventilation air (B). It is configured to include a blower (10).

The ventilation blower 10 is composed of a ventilation fan for generating a blowing force while rotating, and a ventilation motor for generating a rotational force of the ventilation fan.

This ventilation blower 10 is installed in the first ventilation passage (2) is installed in the first blower (10a) and the second ventilation passage (4) for discharging the indoor air (A) to the outside, the ventilation air It consists of the 2nd blower 10b for supplying (B) indoors.

The precooler 8 is a kind of heat exchanger that precools the cold air (A) with cold indoor air (A) before supplying the air (B) to the room, and guides the flow of the indoor air (A) discharged to the outside. An air passage 12 and a second air passage 14 formed in a direction orthogonal to the flow direction of the first air passage 12 to guide the flow of the ventilation air B are formed.

A plurality of first air passages 12 and second air passages 14 are alternately stacked on the precooler 8, and between the first air passages 12 and the second air passages 14. The diaphragm causes heat exchange.

Therefore, the cross sections of the first air passage 12 and the second air passage 14 are formed narrow in the stacked direction so as to facilitate heat exchange, and are formed long in the longitudinal direction of the diaphragm.

However, since the ventilation precooler of the air conditioner according to the prior art is a heat exchange between the indoor air (A) and the ventilation air (B) which is a gas, the heat exchange efficiency decreases due to the reduction of the coefficient of overall heat transmission. In addition, since only the sensible heat is exchanged, there is a problem in that the humidity of the ventilation air B is impossible.

Therefore, the moisture contained in the ventilation air (B) causes a consumer's discomfort during ventilation, and the air conditioner must bear the latent heat load caused by the moisture, thereby reducing cooling capacity and increasing power consumption. .

In addition, the reduction of the cooling capacity and the increase of the power consumption as described above, the efficiency of the air conditioner is accompanied by an increase in the capacity of the air conditioner, thereby increasing the size of the product, there is a problem that the unit cost is also raised. .

The present invention has been made to solve the above problems, an object of the present invention is to heat exchange the air sucked from the outside using the condensed water generated in the evaporator for the purpose of ventilating the room, and the cooling of the ventilation air during ventilation It is possible to provide a precooler for ventilation of an air conditioner capable of dehumidifying and preventing an increase in room temperature and an increase in load of an air conditioner.

Ventilation precooler of the air conditioner of the present invention for realizing the above object is an evaporator that absorbs the heat of the ambient air while the refrigerant evaporates, a reservoir in which the condensed water generated on the surface of the evaporator falls and fresh water, It characterized in that it comprises an air duct installed in the reservoir so that the ventilation air sucked in the cooling by the condensate in the reservoir.

In addition, the ventilation precooler of the air conditioner of the present invention is an evaporator that absorbs the heat of the ambient air while the refrigerant evaporates, a reservoir in which the condensed water generated on the surface of the evaporator falls and fresh water, and ventilated by the condensed water of the reservoir It is characterized in that it comprises a supply pipe for supplying the air for the air and the exhaust pipe for exhausting the heat exchanged air in contact with the condensate.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

3 is an internal configuration diagram schematically showing a ventilation device of the air conditioner according to the present invention, Figure 4 is a perspective view showing an embodiment of a ventilation precooler of the air conditioner according to the present invention, Figure 5 Some cutaway state diagrams showing one embodiment of the ventilation precooler of the air conditioner according to the present invention.

For reference, the same reference numerals are given to the same or similar components, and detailed description thereof will be omitted.
As shown in FIG. 3, the ventilation device of the air conditioner according to the present invention includes a first ventilation path 52 for discharging muddy air to the outside and a second ventilation path for supplying clean air to the indoor unit. (54), a case (56) built in one side of the indoor unit to communicate with the first ventilation passage (52) and the second ventilation passage (54); Both ends of the precooler 58 for heat-exchanging the condensate D of the evaporator 24 and the precooler 58 and the drain pan 28 are respectively freed to condensate D generated in the evaporator 24. The drain hose 60 which guides to the cooler 58, and the ventilation blower 62 which is installed in one side of the precooler 58 and generates the blowing force of the indoor air (E) and the ventilation air (C) It is configured to include.

Here, one end of the first ventilation passage 52 is disposed inside or inside the indoor unit, and the other end is disposed outside to suck the muddy indoor air (E) by the blowing force of the ventilation blower (62). Will be discharged.

One end of the second ventilation passage 54 is located outdoors, and the other end thereof is located inside the indoor unit, so that the outside air is sucked by the blowing force of the ventilation blower 62 so that the outlet 22B of the indoor unit is discharged. Through the room).

And, the ventilation blower 62 is composed of a ventilation fan for generating a blowing force while rotating, and a ventilation motor for generating a rotational force of the ventilation fan.

The ventilation blower 62 is installed in the first ventilation passage 52 and installed in the first blower 62a and the second ventilation passage 54 for discharging the indoor air E to the outside. It consists of a second blower (62b) for supplying the room.

On the other hand, one embodiment of the ventilation precooler of the air conditioner according to the present invention, as shown in Figures 4 and 5, the reservoir 72 in which the condensed water (D) generated on the surface of the evaporator 24 is fresh water ) And an air duct installed in the reservoir 72 so that the ventilation air C communicated with the second ventilation passage 54 and sucked from the outside can be cooled by the condensed water D in the reservoir 72. And 74.

Here, an inlet portion 76 through which condensate D is introduced and an outlet portion 78 through which condensate D is drained are formed at an upper portion of the reservoir 72, and the outlet portion 78 is an inlet portion 76. Formed at a lower position.

That is, since the inlet portion 76 and the outlet portion 78 are located above the reservoir 72, the condensate D is sufficiently stored in the reservoir 72, and when the condensate D is stored in an appropriate amount or more, It is discharged to the outside through the outlet portion 78 formed under the inlet portion 76.

The inlet 76 is connected to a drain pan 28 for collecting condensate D generated at the surface of the evaporator 24 by a drain hose 60, and through the drain hose 60, condensate ( D) is continuously introduced.

The outlet portion 78 maintains the storage amount of the reservoir 72 at an appropriate level, and in particular, drains the upper condensate D, which is relatively high temperature, so that the temperature of the condensate D contained in the reservoir 72 is lowered. Will be minimized.

The outlet 78 is connected to a separate drain hose to guide the condensate drained to the outside.

In addition, the air duct 74 is installed to be completely submerged in the condensate (D) fresh water in the reservoir 72, the heat exchange between the ventilation air (C) and the condensate (D) via the air duct (74) The action takes place.

The air duct 74 is connected at both ends in communication with the second ventilation passage 54 so that the ventilation air (C) flows into the bar, the cross section of the air duct 74 is a vertical direction to facilitate the heat exchange action It is formed long and narrow in the left and right direction to increase the contact area with the condensate (D).

In addition, the air duct 74 is installed in the reservoir 72 in a direction orthogonal to the flow direction of the condensate D flowing from the inlet portion 76 to the outlet portion 78 to provide the ventilation air ( C) and the condensate (D) are heat exchanged in a cross flow (cross flow) method.

The air duct 74 formed as described above is disposed in the plurality of the reservoir 72 to be spaced apart in the flow direction of the condensate (D) to increase the heat exchange efficiency.

In the process of heat exchange with the condensate (D), the ventilation air (C) condenses moisture contained therein to generate condensate (F), and the condensate (F) flows down to the bottom of the air duct (74). It is discharged to the outside through the drain port 74a formed in the bottom surface of the air duct 74.

The drain port 74a is formed on the bottom surface of the air duct 74 passing through the reservoir 72, and the condensed water F drained to the drain port 74a is drained to the outlet 78 of the reservoir 72. It is combined with the condensate (D) is discharged to the outside.

Therefore, the air duct 74 is installed to be slightly inclined so that the condensed water F generated from the ventilation air C can be easily collected into the drain port 74a.

Looking at the operation of the ventilation precooler of the air conditioner according to the present invention configured as described above are as follows.

First, when the ventilation device 50 of the air conditioner is driven for the purpose of ventilating the room, the muddy air in the room is transferred to the outside through the first ventilation passage 52 by the blowing action of the ventilation blower 62. The outside, clean air is transferred to the room through the second ventilation passage (54).

Here, the ventilation air C flowing through the second ventilation passage 54 passes through the precooler 58 of the ventilation apparatus 50 before being supplied to the room.

On the other hand, the low temperature condensate (D) generated in the evaporator 24 in the process of cooling the indoor unit of the air conditioner is collected in the drain pan 28 and the reservoir of the precooler 58 through the drain hose 60 Inflow at 72 is stored.

Ventilating air (C) introduced into the precooler 58 is introduced into the plurality of air ducts 74 to pass through the reservoir 72 in which the condensed water (D) is stored, in this process the air ducts (74) Through the ventilation air (C) and condensate (D) is a heat exchange.

At this time, the temperature of the ventilation air (C) is lowered, and the moisture inside the ventilation air (C) is condensed to flow down to the lower side of the air duct (74).

The air cooled and dehumidified as described above is supplied to the indoor unit through the second ventilation passage 54 through the air duct 74, and is discharged into the room through the discharge port.

Then, the condensate (F) generated in the dehumidification process is collected on the bottom surface of the air duct 74 and flows down along the inclined air duct 74 through the drain hole (74a) formed on the outside of the air duct 74 It is discharged to the outside.

6 is a perspective view showing another embodiment of the ventilation precooler of the air conditioner according to the present invention, Figure 7 is a partially cut-out state diagram showing another embodiment of the ventilation precooler of the air conditioner according to the present invention.

Here, the same reference numerals as the above-mentioned drawings indicate the same members.

Another embodiment of the ventilation precooler of the air conditioner according to the present invention, as shown in Figure 6 and 7, and the reservoir 82 in which the condensed water (D) generated on the surface of the evaporator 24 is fresh water; And an air supply pipe 84 formed in communication with the reservoir 82 and injecting ventilation air C into the condensate D of the reservoir 82, and an upper portion of the condensate D of the reservoir 82. It is formed in communication with the condensed water (D) is configured to include an exhaust pipe (86) for exhausting the heat exchanged air to the outside.

Here, the reservoir 82 has an inlet 88 through which the condensate (D) flows is formed at one upper side, and an outlet 90 through which the condensate (D) is drained is at the other upper side. Formed lower.

In addition, the air supply pipe 84 is connected to the lower side of the reservoir 82, the exhaust pipe 86 is formed higher than the outlet portion 88 on the upper side of the reservoir (72).

The ventilation precooler configured as described above is cooled and dehumidified by directly contacting the condensed water D, which is supplied to the air supply pipe 84, with the condensed water D stored in the reservoir 82, and its structure is very simple. Therefore, miniaturization is possible.

Ventilation precooler of the air conditioner of the present invention configured as described above is installed in the water reservoir so that the air duct forming the flow path of the ventilation air is immersed in the condensed water, the air sucked from the outside for the purpose of ventilation is supplied to the room It is cooled by the condensate produced in the evaporator before it has the advantage of minimizing the increase in room temperature and the increase in air conditioning load during ventilation.

In addition, the heat exchange in the above manner is possible because the sensible heat exchange and latent heat exchange at the same time as well as the cooling of the ventilation air as well as dehumidification, the dehumidified air is supplied to the room to prevent the consumer's discomfort due to moisture in advance. There is an advantage.

In addition, the heat exchange efficiency is improved compared to the conventional air exchange method between the air, the energy efficiency is increased because the condensed water discharged to the outside is used as an energy source, the latent heat load of the air conditioner is reduced to reduce the capacity of the air conditioner There is an advantage.

In addition, since the product can be miniaturized, it is easy to install the inside of the air conditioner, and the cost can be reduced.

Claims (10)

An evaporator that absorbs heat of ambient air while the refrigerant evaporates; A water tank in which condensate generated on the surface of the evaporator is dropped and fresh water; Ventilation pre-cooler of the air conditioner, characterized in that it comprises an air duct installed in the reservoir so that the ventilation air sucked from the outside by the condensate in the reservoir. The method of claim 1, The water reservoir is a precooler for the ventilation of the air conditioner, characterized in that the inlet portion is a condensate inlet is formed on the upper side, the outlet portion is condensed water is formed lower than the inlet portion on the other side. The method according to claim 1 or 2, The air duct is a precooler for ventilation of the air conditioner, characterized in that installed so as to be orthogonal to the flow direction of the condensate. The method of claim 3, wherein The air duct is a pre-cooler for ventilation of the air conditioner, characterized in that the cross section is formed long in the vertical direction. The method of claim 4, wherein The air duct is a pre-cooler for ventilation of the air conditioner, characterized in that a plurality of spaced apart in the interior of the reservoir. The method of claim 5, The air duct is a precooler for ventilation of the air conditioner, characterized in that the drain port for draining the condensate water removed from the ventilation air on one side of the reservoir. An evaporator that absorbs heat of ambient air while the refrigerant evaporates; A water tank in which condensate generated on the surface of the evaporator is dropped and fresh water; An air supply pipe for supplying air for ventilation to the condensate of the reservoir; Ventilation precooler of the air conditioner, characterized in that it comprises an exhaust pipe for exhausting the heat exchanged air in contact with the condensate. The method of claim 7, wherein The water reservoir is a precooler for the ventilation of the air conditioner, characterized in that the inlet portion is a condensate inlet is formed on the upper side, the outlet portion is condensed water is formed lower than the inlet portion on the other side. The method according to claim 7 or 8, The air supply pipe is connected to the lower side of the reservoir, the exhaust pipe is a precooler for ventilation of the air conditioner, characterized in that formed on the upper side of the reservoir higher than the outlet. The method of claim 9, The exhaust pipe is a precooler for ventilation of the air conditioner, characterized in that the drain port for draining the condensed water removed from the ventilation air on one side of the reservoir.

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