KR102089355B1 - Air conditioner - Google Patents

Abstract

The dehumidifier includes a drain pan; Condenser; An evaporator disposed over the drain pan and facing the condenser; A condenser outlet tube including a condenser and an expansion mechanism connected to the condenser outlet tube, the condenser outlet tube portion connected to the condenser, and the condenser connecting tube portion extending between the bottom of the evaporator and the drain pan, the supercooling tube portion located below the evaporator Includes.

Description

Dehumidifier {Air conditioner}

The present invention relates to a dehumidifier, and more particularly, to a dehumidifier having a condenser and an evaporator.

A dehumidifier is an air conditioner for lowering humidity, and can lower relative humidity by directly removing moisture in the air.

The dehumidifier removes moisture from the air, and can be divided into a cooling type and a drying type.

Dry dehumidifiers use a chemical absorbent, which absorbs or adsorbs moisture in the air directly, like dehumidifying products used at home. If the absorbent no longer absorbs moisture, the absorbent can be used again by heating the absorbent again and sending the separated moisture out of the dehumidifier. This method is useful for removing a small amount of moisture in an enclosed space. The hygroscopic agent includes silica gel, which is a porous material having excellent ability to adsorb moisture.

Cooled dehumidifiers control moisture by condensing water vapor in the air with water. To condense water vapor, the temperature of the air must be reduced below the dew point . Therefore, the cooling dehumidifier uses a refrigerant for cooling.

The refrigerant dehumidifier includes a compressor through which the refrigerant is circulated, a condenser, an expansion mechanism and an evaporator.

The dehumidifier as described above may include a drain pan receiving the condensate dropped from the evaporator, and a bucket receiving the condensate dropped from the drain pan.

On the other hand, Republic of Korea Patent Publication No. 10-2011-0131886 A (published on December 7, 2011) discloses an air conditioning system using condensate through which a refrigerant flow path connecting a condenser and an expansion valve passes through a condensate drain. Silver includes a drain plug and a spring for condensing water in the condensate drain portion, and the refrigerant flow path is heat exchanged with condensate accumulated in the condensate drain portion to supercool the refrigerant.

Republic of Korea Patent Publication No. 10-2011-0131886 A (published on December 7, 2011)

An object of the present invention is to provide a dehumidifier capable of supercooling a refrigerant that has passed through a condenser with a simple structure.

Another object of the present invention is to provide a dehumidifier capable of increasing the dehumidifying amount of the evaporator while keeping the drain pan clean.

An exemplary embodiment of the present invention includes a drain pan; Condenser; An evaporator disposed over the drain pan and facing the condenser; A condenser and an expansion tube connected to the condenser outlet tube and connected to the evaporator and evaporator inlet tube, the condenser outlet tube connected to the condenser, and the condenser connecting tube portion extending between the bottom of the evaporator and the drain pan to the evaporator It includes a supercooled tube portion located below.

The evaporator may include an evaporation tube through which the refrigerant passes. In addition, at least a portion of the supercooled tube portion may be spaced apart from the evaporation tube in the vertical direction.

The evaporation tube may include a multi-row evaporation tube spaced apart in the air flow direction. In addition, the supercooled tube part may include a plurality of straight tube parts spaced apart in a direction parallel to the spaced apart direction of the plurality of heat evaporation tubes.

The supercooled tube part may include a pair of straight tube parts that are long in the width direction of the evaporator and spaced apart in the air flow direction, and a curved tube part connecting the pair of straight tube parts.

The outer diameter of the supercooled tube portion may be thinner than the gap between the bottom of the evaporator and the inner bottom surface of the drain pan portion.

The drain pan may include a plurality of walls surrounding the outside of the supercooling tube portion.

It may be coupled to the supercooled tube portion, and may include at least one condensate guide that guides the condensate dropped from the evaporator to the supercooled tube portion.

The at least one condensate guide may include a first condensate guide connected to any one of the pair of straight pipes and a second condensate guide connected to the other of the pair of straight pipes.

The first condensate guide and the second condensate guide may be inclined toward each other toward the lower side. A gap may be formed between the lower end of the first condensate guide and the lower end of the second condensate guide to drop the condensate into the drain pan.

According to an embodiment of the present invention, since the condensed water falling in the downward direction from the evaporator directly contacts the supercooling tube portion located under the evaporator to supercool the refrigerant, a separate opening and closing mechanism for collecting condensate in the drain pan is not required. , The structure of the drain pan has a simple advantage.

In addition, since it is not necessary to store the condensate for subcooling the refrigerant in the drain pan at a predetermined height, the condensed water dropped from the evaporator or the supercooled tube can be drained out of the drain pan, and the drain pan contains condensate. The drain pan can be kept clean.

In addition, a simple process of bending a part of the condenser outlet tube down to the bottom of the evaporator can supercool the refrigerant in the condenser outlet tube.

In addition, the refrigerant passing through the supercooling tube part can be cooled in multiple stages by condensate, so that a simple structure of a pair of straight tube parts can be supercooled more quickly and efficiently.

In addition, the condensed water dropped from the evaporator can guide the condensate guide to the surface of the supercooled tube portion, so that the condensed water dropped from the evaporator can drop to the drain pan after dissipating the supercooled tube portion as much as possible.

In addition, since the condensate guide absorbs heat from the supercooled tube portion and transfers it to the condensed water, the time and area for heat exchange with the refrigerant in the supercooled tube portion can be maximized, and the refrigerant can be efficiently supercooled while minimizing the length of the supercooled tube portion. .

In addition, a plurality of walls of the drain pan may surround the outer side of the supercooled tube portion to protect the supercooled tube portion.

In addition, the first condensate water guide and the second condensate water guide can collect condensed water falling from the evaporator to the supercooling tube part as much as possible, so that the heat exchange amount of the supercooling tube part among the condensate can be increased, and the dehumidifier can ensure sufficient supercooling. Can help.

1 is a diagram showing a dehumidifier according to an embodiment of the present invention,
2 is a perspective view showing a condenser and an evaporator according to an embodiment of the present invention,
3 is a cross-sectional view of the condenser shown in Figure 1, the evaporator and the drain pan,
4 is a PH diagram of a dehumidifier according to an embodiment of the present invention,
5 is a view showing a change in the outlet temperature of the condenser and a change in the temperature of the condensate in the bucket according to the change in the supercooling degree according to the embodiment of the present invention;
FIG. 6 is a diagram illustrating cooling capacity, supercooling heat exchange amount, and dehumidifying efficiency according to a change in supercooling degree according to an embodiment of the present invention.

Hereinafter, a specific embodiment of the present invention will be described in detail with the accompanying drawings.

1 is a sectional view showing a dehumidifier according to an embodiment of the present invention, FIG. 2 is a perspective view showing a condenser and an evaporator according to an embodiment of the present invention, and FIG. 3 is a condenser shown in FIG. 1, an evaporator and a drain The fan is a cross-sectional view.

The dehumidifier includes a drain pan (1), a condenser (2); An evaporator 3; It includes an expansion mechanism (4).

The dehumidifier may further include a compressor (7) for compressing the refrigerant.

The dehumidifier may further include a fan (8) for flowing air in the order of the condenser (2) and the evaporator (3).

The dehumidifier may further include a case (9).

The dehumidifier may further include a bucket 10 that receives condensed water dropped from the drain pan 1.

The drain pan 1 may be arranged to receive condensate that has fallen from the surface of the evaporator 3 or the surface of the condenser outlet tube 5.

The drain pan 1 may be disposed on the barrier 97. The drain pan 1 may be horizontally disposed on the top of the barrier 97. The drain pan 1 may be arranged long in the width direction Y of the evaporator 3.

The drain pan 1 may include a lower plate 12 through which condensed water dropped from the evaporator 3 flows. The lower plate 12 may be located under the evaporator 3 and may be formed larger than the evaporator 3. A rib supporting the evaporator 3 may be formed on the lower plate 12, and the rib supports the evaporator 3 such that the bottom 3A of the evaporator 3 is spaced apart from the inner bottom surface 1A of the drain pan 1. can do.

The drain pan 1 may include a plurality of walls 13 and 14 surrounding the outside of the supercooling tube portion 52 to be described later. The plurality of walls 13 and 14 may protect the supercooled tube portion 52. The plurality of walls 13 and 14 may include a front wall 13 positioned in front of the supercooled tube unit 52 and a rear wall 14 positioned behind the supercooled tube unit 52. The drain pan 1 may further include a pair of side walls connecting the front wall 13 and the rear wall 14.

The drain pan 1 may form a drain flow path D by the lower plate 12 and the plurality of walls 13 and 14.

The drain pan 1 may be formed with a drain portion 15 for guiding the condensate of the drain flow path D to the bucket 10 at the bottom. The drain part 15 may be formed to communicate with the drain flow path D.

The lower plate 12 of the drain pan 1 may extend to the lower side of the condenser 2, and a rib 16 supporting the condenser 2 may be formed on the lower plate 12. The ribs 16 supporting the condenser 2 may be formed outside the drain flow path D.

The drain pan 1 may include a fan seating body 11 on which the fan 8 is seated, and the fan seating body 11 may be moved from the lower plate 12 of the drain pan 1 to the lower side of the fan 8. Can be extended.

The condenser 2 can be located after the evaporator 3 in the flow direction of air. The condenser 2 may be disposed between the evaporator 3 and the fan 8 in the flow direction of air.

The condenser 2 may include a condensation tube 21, 22 and 23 through which the refrigerant passes. A condenser outlet tube 5 to be described later may be connected to the condensation tubes 21, 22, and 23.

The condenser 2 may include a plurality of condensation tubes 21, 22, 23. The plurality of condensation tubes 21, 22, 23 may be spaced apart in the air flow direction. The plurality of condensation tubes 21, 22 and 23 may be positioned closer to the evaporator 3 than any other condensation tubes 21 and 22.

The condenser 2 may be configured as a fin-tube heat exchanger, and the condenser 2 may further include a fin 24 coupled to the condensation tubes 21, 22, 23.

The evaporator 3 is disposed on the drain pan 1 and can be directed to the condenser 2. The evaporator 3 may be located between the suction body 92 and the condenser 2 in the air flow direction.

The evaporator 3 may include an evaporation tube 31 and 32 through which the refrigerant passes. The evaporator 3 may include a plurality of evaporation tubes 31 and 32. The plurality of evaporation tubes 31 and 32 may be spaced apart in the air flow direction.

The evaporator 3 may be configured as a fin-tube heat exchanger, and the evaporator 3 may further include a fin 33 coupled to the evaporation tube 31. The lower end of the fin 33 may be the lower end 3A of the evaporator 3.

The evaporator 3 may have a thickness in the air flow direction (X), may have a height in the up and down direction (Z), and a direction (Y) orthogonal to each of the air flow direction (X) and the up and down direction (Z) Can have a width.

The evaporator 3 may have its lower end 3A spaced apart from the inner bottom surface 1A of the drain pan 1, that is, the upper surface of the lower plate 12 in the vertical direction Z, and the evaporator 3 may have its lower end ( Between 3A) and the inner bottom surface of the grain pan 1, a gap G in which the supercooling tube portion 52 to be described later is located may be formed.

The expansion mechanism 4 can be connected to the condenser 3 and the condenser outlet tube 5. The expansion mechanism 4 may be connected to the evaporator 3 and the evaporator inlet tube (not shown).

The condenser outlet tube 5 may be connected to the condensation tube 23 closest to the evaporator 3 among the plurality of condensation tubes 21 and 22 and 23 of the condenser 2. The condenser outlet tube 5 may be connected to the lower portion of the condensation tube 23.

The condenser outlet tube 5 may include a condenser connecting tube part 51 connected to the condenser 2 and a supercooling tube part 52 located under the evaporator 3. The condenser outlet tube 5 may further include an expansion mechanism connecting tube portion 53 extending from the supercooling tube portion 52 and connected to the expansion mechanism 4.

The supercooling tube portion 52 may extend between the bottom 3A of the evaporator 3 and the inner bottom surface 1A of the drain pan 1 in the condenser connection tube portion 51.

The outer diameter T of the supercooled tube part 52 may be smaller than the vertical width H of the plurality of walls 13 and 14. The outer diameter T of the supercooled tube part 52 may be smaller than the gap G between the lower end 3A of the evaporator 3 and the inner bottom surface 1A of the drain pan part 1.

At least a portion of the supercooled tube portion 52 may be spaced apart from the evaporation tube in the vertical direction (Z), and condensed water falling downward from the evaporation tube 31 may contact the outer surface of the supercooled tube portion 52 , The supercooling tube unit 52 may be cooled.

 The supercooled tube portion 52 may include a plurality of straight pipe portions 54 and 55 spaced apart in a direction parallel to the separation direction X of the multiple heat evaporation tubes 31 and 32.

The supercooled tube part 52 may include a pair of spaced apart straight tube parts 54 and 55.

The supercooling tube part 52 is provided with a pair of straight pipe parts 54 and 55 and a pair of straight pipe parts 54 and 55 spaced apart in the air flow direction X in the width direction of the evaporator 3. It may include a bent portion 56 that connects.

The supercooling tube portion 52 may be located in the drain flow path D formed in the drain pan 1, and the condensed water flowing toward the drain portion 15 along the drain flow path D may have the supercooling tube portion 52. As it moves along, the supercooling tube part 52 may be further cooled.

The expansion mechanism connecting tube portion 53 may be a portion bent upward in any one of the pair of straight pipe portions 54 and 55 constituting the supercooling tube portion 52, and the supercooling tube portion ( The opposite side of 52) can be connected to the expansion mechanism 4.

The condenser connection tube portion 51, the supercooling tube portion 52, and the expansion mechanism connection tube portion 53 may be integrally formed, and the condenser connection tube portion 51 and the supercooling tube portion in the flow direction of the refrigerant 52, the expansion mechanism may be in the order of the connecting tube portion 53.

The condenser outlet tube 5 may be bent so that a part thereof is located under the evaporator 3, and the condenser outlet tube part 51 may be a part of the condenser outlet tube 5 located below the evaporator 3 You can.

The dehumidifier may further include at least one condensate guide (57) (58) coupled to the supercooling tube portion (52) and guiding the condensate (W) dropped from the evaporator (3) to the supercooling tube portion (52). .

The condensate guides 57 and 58 may include an upper guide 60 connected to an upper portion of the straight pipe portions 54 and 55 and a lower guide 61 connected to a lower portion of the straight pipe portions 54 and 55. .

The upper end of the upper guide 60 may be spaced apart from the lower end 3A of the evaporator 3 in the vertical direction Z.

The lower end of the lower guide 61 may be spaced apart from the inner bottom surface 1A of the drain pan 1 in the vertical direction Z or may be in contact with the inner bottom surface 1A of the drain pan 1. The lower end of the lower guide 61 may be positioned at a height capable of contacting condensate flowing along the drain flow path D. In this case, the supercooling tube part 52 may discharge heat to the condensate W flowing along the drain flow path D through the lower guide 61, and the supercooling tube part ( After the primary cooling of the 52), the condensed water (W) dropped into the drain flow path (D) can be secondary cooled by the subcooling tube portion 52 by the lower guide (61).

On the other hand, this embodiment is not limited to including the lower guide 61 as described above, it is also possible that the lower portion of the supercooled tube portion 52 is in contact with the condensed water (W) flowing along the drain flow path (D), , Of course, it is also possible to cool directly by the condensed water (W) flowing along the drain flow path (D).

The condensate guides 57 and 58 may be a metal material having a high thermal conductivity, such as aluminum, and the condensate guides 57 and 58 are supercooled heat transfer connected to the supercooling tube part 52, particularly, the straight tube parts 54 and 55 It can be a pin.

The pin 33 of the evaporator 3 may be a vertical plate which is arranged long in the vertical direction Z. On the other hand, the condensate guides 57 and 58 are laid in an inclined direction between the air flow direction X and the up and down direction Z, and may be a long inclined plate in the width direction Y. The condensate guides 57 and 58 are not connected to the bent portion 56, and the horizontal length of the condensate guides 57 and 58 may be shorter than the horizontal length of the entire supercooled tube portion 52.

Condensate guide (57, 58) may be provided with a plurality of dehumidifiers, a plurality of condensate guides (57, 58) is the first condensate connected to any one of the pair of straight pipes (54, 55) (54) A guide 57 and a second condensate guide 58 connected to the other 55 of the pair of straight pipes 54 and 55 may be included.

The first condensate guide 57 and the second condensate guide 58 may guide the condensate W to be guided to the pair of straight pipes 54 and 55.

The first condensation water guide 57 and the second condensation water guide 58 may be inclined toward each other toward the lower side.

Condensate can be dropped directly on a pair of straight pipes 54 and 55, and the condensed water thus dropped can hit the pair of straight pipes 54 and 55 and then float around. The first condensate water guide 57 and the second condensate water guide 58 can guide the condensate splashed around the pair of straight pipe parts 54 and 55 back to the pair of straight pipe parts 54 and 55. , The condensed water dropped from the evaporator 3 may contact the pair of straight pipe parts 54 and 55 as much as possible and then fall to the drain flow path D.

A gap 59 in which condensate W falls to the drain pan 1 may be formed between the lower end of the first condensate guide 57 and the lower end of the second condensate guide 58.

The fan 8 can be arranged facing the condenser 2. The fan 8 may be after the condenser 2 in the direction of flow of air.

The compressor 7 may be connected to the evaporator 3 and the compressor suction tube (not shown), and may be connected to the condenser 2 and the compressor outlet tube (not shown).

The fan 8 may include a motor 82 and a blower 84 connected to the motor 82 and rotated. The fan 8 may further include a fan housing 86 rotatably receiving the blower 84.

The fan housing 86 may be formed with a suction hole 87 through which the air passing through the evaporator 3 and the condenser 2 is sucked into the blower 84. The fan housing 86 may include a discharge unit 88 for blowing air through an air discharge port 93 to be described later. The fan 8 may be mounted on the fan mounting portion 11 extending from the drain fan 1.

The drain pan 1, the condenser 2, the evaporator 3, the expansion mechanism 4, the compressor 7, the fan 8 and the bucket 10 can be disposed inside the case 9 have.

The case 9 may include an intake body 92 having an air intake 91. The suction body 92 may be arranged to face the condenser 2.

The case 9 may include a discharge body 94 on which an air discharge port 93 is formed. The case 9 may include a base 95 forming a bottom surface appearance of the dehumidifier. The case 9 may further include an outer cover 96 surrounding the side surfaces of the condenser 2 and the evaporator 3.

Inside the case 9, a barrier 97 that divides the lower side of the drain pan 1 into a compressor receiving space in which the compressor 7 is accommodated and a bucket receiving space in which the bucket 19 is located may be disposed. The barrier 97 may be erected vertically on the upper side of the base 95,

The bucket 10 may have an opening through which condensed water dropped from the drain pan 1 passes. The opening may be formed on the top of the bucket 10. After being guided to the drain flow path (D) of the drain pan 1, the condensate (W) dropped along the drain portion 15 may fall into the interior of the bucket 10.

4 is a PH diagram of a dehumidifier according to an embodiment of the present invention, FIG. 5 is a view showing a change in condenser outlet temperature and a change in condensate temperature in a bucket according to a change in supercooling according to an embodiment of the present invention, and FIG. It is a diagram showing the cooling capacity and the supercooling heat exchange amount and dehumidifying efficiency according to the change in the supercooling degree according to an embodiment of the present invention.

In this embodiment, the condensed water (W) dropped from the surface of the evaporator (3) is in contact with the supercooling tube part (52), thereby allowing the supercooling tube part (52) to undergo primary cooling (a-> b), and the supercooling tube part The condensed water (W) that has cooled (52) flows along the drain flow path (D) of the drain pan (1) in the longitudinal direction of the drain flow path (D), thereby secondary cooling the supercooling tube portion (52) (b-> c). I can do it. '

The dehumidifier of this embodiment can supercool the refrigerant exiting the condenser 2 by the primary cooling and the secondary cooling of the supercooling tube part 52 at 7 ° C to 10 ° C, and the evaporator 3 is cooled as the refrigerant is supercooled. The evaporation capacity is increased (d-> e).

L shown in FIG. 5 is a change in the outlet temperature of the condenser in the comparative example compared with the embodiment of the present invention, and the condenser when the condenser outlet tube 5 is not cooled by the condensed water W falling from the evaporator 3 It is the change of the outlet temperature.

M shown in Figure 5 is a change in the outlet temperature of the condenser according to the embodiment of the present invention, it can be seen that the outlet temperature of the condenser in this embodiment is lower than the outlet temperature of the condenser in the comparative example.

N shown in FIG. 5 is a view showing a change in the temperature of the condensate in the bucket of the comparative example compared to the embodiment of the present invention. If not, it is the change in the temperature of the condensate in the bucket.

O shown in FIG. 5 is a view showing a change in the temperature of the condensate in the bucket according to an embodiment of the present invention, than when the condenser outlet tube 52 is not cooled by the condensate W falling from the evaporator 3 High can be confirmed.

Referring to FIG. 6, as the degree of supercooling increases, each of the subcooled heat exchange amount (Qsub) and the cooling capacity (Qeva) may be increased, and dehumidification efficiency (EF = dehumidification amount (L / hr) / compressor power consumption (KW)) Can be increased. For example, when the supercooling degree is secured at 10 ° C, the dehumidification efficiency (EF) can be increased by 12.7%.

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may make various modifications and variations without departing from the essential characteristics of the present invention.

Therefore, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention, but to explain, and the scope of the technical spirit of the present invention is not limited by these embodiments.

The scope of protection of the present invention should be interpreted by the claims below, and all technical spirits within the scope equivalent thereto should be interpreted as being included in the scope of the present invention.

1: drain pan 2: condenser
3: evaporator 4: expansion mechanism
5: condenser outlet tube 6: evaporator inlet tube
51: condenser connection tube portion 52: supercooled tube portion

Claims (10)

A drain pan;
Condenser;
An evaporator disposed on the drain pan and facing the condenser;
It includes an expansion mechanism connected to the condenser and the outlet tube of the condenser,
The condenser outlet tube
A condenser connection tube part connected to the condenser,
In the condenser connecting tube portion extending between the bottom of the evaporator and the drain pan includes a supercooling tube portion located below the evaporator,
It is coupled to the supercooling tube portion, and further comprises at least one condensate guide for guiding the condensate dropped from the evaporator to the supercooling tube portion,
The supercooling tube part
A pair of straight pipes spaced in the air flow direction and long in the width direction of the evaporator and
It includes a curved pipe connecting the pair of straight pipe,
The at least one condensate guide
A first condensate guide connected to any one of the pair of straight pipes,
A second condensate guide connected to the other of the pair of straight pipes,
The first condensation water guide and the second condensation water guide are spaced apart in a direction in which the pair of straight pipe parts are spaced apart,
The first condensate guide and the second condensate guide are inclined closer to each other toward the lower side,
A gap is formed between the lower end of the first condensate guide and the lower end of the second condensate guide so that condensate falls to the drain pan.
dehumidifier. According to claim 1,
The evaporator includes an evaporation tube through which the refrigerant passes,
At least a portion of the supercooled tube portion dehumidifier spaced apart from the evaporation tube. According to claim 1,
The evaporator includes a plurality of heat evaporation tubes spaced apart in the air flow direction,
The pair of straight tube dehumidifiers spaced apart in a direction parallel to the separation direction of the plurality of evaporation tubes. delete According to claim 1,
The outer diameter of the supercooled tube portion is smaller than the gap between the bottom of the evaporator and the inner bottom surface of the drain pan portion. According to claim 1,
The drain fan is a dehumidifier including a plurality of walls surrounding the outside of the supercooling tube part. delete delete delete delete

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