WO2019198174A1

WO2019198174A1 - Air conditioning device

Info

Publication number: WO2019198174A1
Application number: PCT/JP2018/015224
Authority: WO
Inventors: 佑太小宮; 真哉東井上; 政博横井; 臼田　雄一; 智史上田; 則行谷
Original assignee: 三菱電機株式会社
Priority date: 2018-04-11
Filing date: 2018-04-11
Publication date: 2019-10-17
Also published as: EP3779318A1; US20200400354A1; EP3779318A4; CN111919072A; JP6972314B2; JPWO2019198174A1

Abstract

This air conditioning device is provided with a case, an evaporator, a condenser, and a water sprinkling device that sprinkles the condenser with condensed water generated in the evaporator, wherein the condenser is provided with: a first header and a second header that are arranged in parallel with each other; a first heat transfer pipe and a second heat transfer pipe that are arranged in parallel with each other between the first header and the second header; and fins arranged between the first heat transfer pipe and the second heat transfer pipe.

Description

Air conditioner

The present invention relates to an air conditioner in which an evaporator and a condenser are arranged in one casing.

In the prior art, an integrated air conditioner has been proposed in which an evaporator and a condenser are arranged in the same plane, with the evaporator positioned above and the condenser positioned below the evaporator (for example, Patent Document 1). In this integrated air conditioner, the evaporator and the condenser are constituted by spine fin tubes. The spine fin tube is configured by fixing a number of strip-shaped spine fins on the outer periphery of a round tube having a circular cross section.

JP-A-8-61699

In the integrated air conditioner described in Patent Document 1, drain water (condensed water) from the evaporator is dropped into the condenser, and the condensed water staying in the condenser is evaporated by heat from the high-temperature refrigerant. ing. However, in the integrated air conditioner described in Patent Document 1, since the condenser is configured by a spine fin tube, the condensed water attached to the spine fin tube is difficult to stay. For this reason, there existed a problem that the quantity of the condensed water evaporated in a condenser was not enough.

The present invention has been made to solve the above-described problems, and provides an air conditioner that can improve the amount of condensed water evaporated in a condenser.

An air conditioner according to the present invention includes a housing in which a first air passage through which indoor air circulates and a second air passage through which outdoor air circulates, and the first air passage, An evaporator that exchanges heat between air and refrigerant, a condenser that is disposed in the second air path and exchanges heat between the outdoor air and the refrigerant, and condensed water generated by the evaporator is supplied to the condenser A condenser for spraying water, and the condenser includes a first heat transfer tube and a second heat transfer tube arranged in parallel with each other, and fins disposed between the first heat transfer tube and the second heat transfer tube. And.

In the air conditioner according to the present invention, the condenser includes a first heat transfer tube and a second heat transfer tube arranged in parallel to each other, and a fin disposed between the first heat transfer tube and the second heat transfer tube. Prepare. Therefore, the amount of condensed water evaporated in the condenser can be improved.

It is the schematic which shows the structure of the air conditioning apparatus which concerns on Embodiment 1 of this invention. It is a perspective view which shows the condenser of the air conditioning apparatus which concerns on Embodiment 1 of this invention. It is a front view which shows the principal part of the condenser of the air conditioning apparatus which concerns on Embodiment 1 of this invention. It is the schematic which shows the modification of the structure of the air conditioning apparatus which concerns on Embodiment 1 of this invention. It is a perspective view which shows the condenser of the air conditioning apparatus which concerns on Embodiment 2 of this invention. It is a top view which shows the condenser of the air conditioning apparatus which concerns on Embodiment 2 of this invention. It is a perspective view which shows the condenser of the air conditioning apparatus which concerns on Embodiment 3 of this invention. It is a perspective view which shows the modification of the condenser of the air conditioning apparatus which concerns on Embodiment 3 of this invention. It is a perspective view which shows the condenser of the air conditioning apparatus which concerns on Embodiment 4 of this invention. It is a longitudinal cross-sectional view which shows the condenser of the air conditioning apparatus which concerns on Embodiment 4 of this invention. It is the schematic which shows the structure of the air conditioning apparatus which concerns on Embodiment 5 of this invention. It is the schematic which shows the modification of the structure of the air conditioning apparatus which concerns on Embodiment 5 of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings as appropriate. In addition, in the following drawings including FIG. 1, the relationship of the size of each component may be different from the actual one. Further, in the following drawings including FIG. 1, the same reference numerals denote the same or equivalent parts, and this is common throughout the entire specification. Furthermore, the forms of the constituent elements shown in the entire specification are merely examples, and are not limited to these descriptions.

Embodiment 1 FIG.
(Constitution)
FIG. 1 is a schematic diagram showing the configuration of the air-conditioning apparatus according to Embodiment 1 of the present invention.
As shown in FIG. 1, the air conditioner 1 includes a housing 90. The housing 90 is formed with an indoor inlet 91, an indoor outlet 92, an outdoor inlet 93, and an outdoor outlet 94. The indoor suction port 91 is an opening for taking indoor air A from the room into the housing 90. The indoor outlet 92 is an opening for blowing the indoor air A into the room. The outdoor suction port 93 is an opening for taking outdoor air B into the housing 90 from outside. The outdoor air outlet 94 is an opening for blowing the outdoor air B out of the room.

The housing 90 is partitioned into two spaces by a partition plate 95, and a first air passage 90a through which the indoor air A flows and a second air passage 90b through which the outdoor air B flows are formed. That is, the housing 90 is partitioned by the partition plate 95 into a space communicating with the indoor suction port 91 and the indoor outlet 92 and a space communicating with the outdoor suction port 93 and the outdoor outlet 94.

The air conditioner 1 includes a refrigerant circuit 10. The refrigerant circuit 10 includes a compressor 20, an expansion valve 30, an evaporator 40, and a condenser 50. The compressor 20, the condenser 50, the expansion valve 30, and the evaporator 40 are sequentially connected in an annular shape by the refrigerant pipe 60, and the refrigerant circulates. The refrigerant pipe 60 is made of, for example, aluminum.

The evaporator 40 is disposed in the first air passage 90 a in the housing 90. The evaporator 40 exchanges heat between the indoor air A and the refrigerant. The evaporator 40 includes a plurality of heat transfer tubes 41 through which the refrigerant flows and a plurality of fins 42 joined to the plurality of heat transfer tubes 41. In addition, in FIG. 1, the state which looked at the evaporator 40 from the side surface is shown. The heat transfer tube 41 corresponds to an evaporator side heat transfer tube, and the fin 42 corresponds to an evaporator side fin.

The plurality of heat transfer tubes 41 have refrigerant flow paths therein. The plurality of heat transfer tubes 41 are, for example, circular tubes having a circular cross section perpendicular to the axis of the refrigerant flow path. Note that the plurality of heat transfer tubes 41 are not limited to circular tubes, and may be flat tubes having a flat cross section perpendicular to the axis of the refrigerant flow path.

The fin 42 is, for example, a plate fin. The fins 42 are not limited to plate fins, and may be corrugated fins.

The plurality of heat transfer tubes 41 and the plurality of fins 42 constituting the evaporator 40 are made of aluminum.

The indoor blower 70 is disposed in the first air passage 90a. The indoor blower 70 sucks the indoor air A from the indoor suction port 91 and blows it out from the indoor air outlet 92 into the room. The indoor blower 70 is, for example, a propeller fan. In addition, the indoor air blower 70 is not limited to this, For example, a crossflow fan may be sufficient.

Inside the housing 90, an indoor drain pan 110 that stores the condensed water C generated in the evaporator 40 is disposed below the evaporator 40.

The condenser 50 is disposed in the second air passage 90b. The condenser 50 exchanges heat between the outdoor air B and the refrigerant. The configuration of the condenser 50 will be described later.

The outdoor blower 80 is disposed in the second air passage 90b. The outdoor blower 80 sucks the outdoor air B from the outdoor suction port 93 and blows it out from the outdoor air outlet 94 to the outside. The outdoor blower 80 is a sirocco fan, for example. In addition, the outdoor air blower 80 is not limited to this, For example, a propeller fan may be sufficient.

The first air passage 90 a and the second air passage 90 b of the housing 90 are formed adjacent to each other in the horizontal direction inside the housing 90. That is, the evaporator 40 and the condenser 50 are disposed in positions separated in the horizontal direction inside the housing 90.

The compressor 20 is disposed in the second air passage 90b. The expansion valve 30 is disposed in the first air passage 90a. Note that the compressor 20 may be disposed in the second air passage 90b. The expansion valve 30 may be disposed in the second air passage 90b.

The compressor 20, the expansion valve 30, the evaporator 40, and the condenser 50 are accommodated in one housing 90. In the air conditioner 1, a first air passage 90 a through which the indoor air A flows and a second air passage 90 b through which the outdoor air B flows are formed in one housing 90. That is, the air conditioning apparatus 1 constitutes an integrated air conditioner.

The air conditioner 1 includes a watering device 100. The watering device 100 includes a water pump 101, a water pipe 102, and a water sprinkling unit 103. The water sprinkling unit 103 is disposed above the condenser 50 in the housing 90. The water pump 101 is disposed in the indoor drain pan 110. The water pipe 102 connects the water pump 101 and the water sprinkler 103. The watering device 100 sucks the condensed water C stored in the indoor drain pan 110 by the water pump 101 and sprays the condensed water C from the water sprinkling unit 103 to the condenser 50 via the water pipe 102. That is, the watering device 100 sprays the condensed water C generated in the evaporator 40 to the condenser 50.

FIG. 2 is a perspective view showing the condenser of the air-conditioning apparatus according to Embodiment 1 of the present invention.
In FIG. 2, the z direction is the vertical direction. The x direction is the flow direction of the outdoor air B passing through the condenser 50. The y direction is a direction orthogonal to the z direction and the y direction. The x direction and the y direction are parallel to the horizontal plane.
As shown in FIG. 2, the condenser 50 includes a plurality of heat transfer tubes 51, a plurality of fins 52, a first header 53, and a second header 54.

The plurality of heat transfer tubes 51 are arranged in parallel with each other between the first header 53 and the second header 54. The plurality of heat transfer tubes 51 are arranged, for example, such that the longitudinal direction is in the vertical direction. The plurality of heat transfer tubes 51 have refrigerant flow paths therein. The plurality of heat transfer tubes 51 are flat tubes having a flat cross section perpendicular to the axis of the refrigerant flow path. The plurality of heat transfer tubes 51 are arranged such that the long axis of the flat cross section is along the flow direction of the outdoor air B.

The first header 53 and the second header 54 are arranged in parallel to each other. For example, the first header 53 and the second header 54 are arranged so that the longitudinal direction is in the horizontal direction. The first header 53 is disposed above the second header 54. The first header 53 is connected to one end of the plurality of heat transfer tubes 51. Further, the condensed water C is sprinkled from the sprinkler 100 on the upper surface of the first header 53. The other end of the plurality of heat transfer tubes 51 is connected to the second header 54. The refrigerant that has flowed into the first header 53 is branched into the respective refrigerant flow paths of the plurality of heat transfer tubes 51, joined again at the second header 54, and then flows out from the second header 54.

The plurality of fins 52 are respectively disposed between the plurality of heat transfer tubes 51. The plurality of fins 52 are, for example, corrugated fins.

FIG. 3 is a front view showing a main part of the condenser of the air-conditioning apparatus according to Embodiment 1 of the present invention.
As shown in FIG. 3, the plurality of heat transfer tubes 51 include a first heat transfer tube 51-1 and a second heat transfer tube 51-2. The first heat transfer tube 51-1 and the second heat transfer tube 51-2 are arranged adjacent to each other. The first heat transfer tube 51-1 and the second heat transfer tube 51-2 are arranged in parallel to each other. Fins 52 are arranged between the first heat transfer tube 51-1 and the second heat transfer tube 51-2.

The first header 53, the second header 54, the plurality of heat transfer tubes 51, and the plurality of fins 52 constituting the condenser 50 are made of aluminum.

(Operation)
Next, the operation of the air conditioner 1 will be described.
When the cooling operation is started, the compressor 20, the indoor blower 70, and the outdoor blower 80 operate. The compressor 20 sucks in the low-temperature and low-pressure refrigerant and discharges the high-temperature and high-pressure refrigerant. The high-temperature and high-pressure refrigerant discharged from the compressor 20 flows into the condenser 50. The refrigerant that has flowed into the condenser 50 exchanges heat with the outdoor air B blown from the outdoor blower 80 to dissipate heat, and the temperature is lowered to become a liquid refrigerant and flows out of the condenser 50. The refrigerant flowing out of the condenser 50 is decompressed by the expansion valve 30 to become a gas-liquid two-phase refrigerant and flows into the evaporator 40. The refrigerant flowing into the evaporator 40 exchanges heat with the room air A blown from the indoor blower 70 to absorb heat and evaporate, and flows out of the evaporator 40 as a gaseous refrigerant. The refrigerant that has flowed out of the evaporator 40 is sucked into the compressor 20.

When the indoor air A passes through the evaporator 40, the water vapor contained in the indoor air A is condensed to become condensed water C. The condensed water C generated in the evaporator 40 is stored in the indoor drain pan 110 disposed below the evaporator 40. The watering device 100 sucks the condensed water C stored in the indoor drain pan 110 by the water pump 101 and sprays the condensed water C from the water sprinkling unit 103 to the condenser 50 via the water pipe 102. Specifically, the watering device 100 sprinkles the condensed water C on the upper surface of the first header 53.

The water sprinkler 100 is provided with a water level sensor that detects the water level of the condensed water C stored in the indoor drain pan 110, for example, and operates the water pump 101 when the water level of the condensed water C exceeds a predetermined level. You may let them.

The condensed water C sprayed on the upper surface of the first header 53 flows downward from the edge of the first header 53 along the surfaces of the plurality of heat transfer tubes 51 and the plurality of fins 52. That is, the condensed water C flows in the −z direction in FIGS. The condensed water C transmitted from the first header 53 to the plurality of fins 52 flows downward along the surfaces of the plurality of fins 52.

When the plurality of fins 52 are corrugated fins, the condensed water C transmitted from the first header 53 to the fins 52 flows downward while being curved along the curved shape of the fins 52 that are corrugated fins. That is, the path through which the condensed water C flows through the fins 52 is longer than the distance between the first header 53 and the second header 54.

When the condensed water C flows downward through the plurality of heat transfer tubes 51 and the plurality of fins 52, the condensed water C is heated and evaporated by the refrigerant in the plurality of heat transfer tubes 51, and becomes steam. The steam flows along with the outdoor air B through the second air passage 90b and flows out of the outdoor outlet 94 to the outside.

(effect)
As described above, in the first embodiment, the air conditioner 1 includes the evaporator 40 that exchanges heat between the indoor air A and the refrigerant, the condenser 50 that exchanges heat between the outdoor air B and the refrigerant, and the evaporator. The water sprinkler 100 which sprays the condensed water C generated at 40 to the condenser 50 is provided. The condenser 50 includes a first header 53 and a second header 54 arranged in parallel with each other, a plurality of heat transfer tubes 51 arranged in parallel with each other between the first header 53 and the second header 54, and a plurality of heat transfer tubes 51. Fins 52 arranged between the heat transfer tubes 51.
For this reason, the condensed water C sprayed from the water sprinkler 100 to the condenser 50 is likely to stay on the surfaces of the fins 52 arranged between the plurality of heat transfer tubes 51, and the condensed water C evaporated in the condenser 50. The amount of can be improved. Moreover, since the air conditioning apparatus 1 is provided with the watering apparatus 100, even if it is a case where the evaporator 40 and the condenser 50 are arrange | positioned away in the horizontal direction, the condensed water C which generate | occur | produced in the evaporator 40 is the condenser 50. Can be watered. Therefore, the freedom degree of the arrangement position of the evaporator 40 and the condenser 50 in the housing | casing 90 can be improved.

In the first embodiment, the first header 53 and the second header 54 extend in the horizontal direction, and the first header 53 is disposed above the second header 54. In addition, the watering device 100 is configured to sprinkle the condensed water C on the upper surface of the first header 53.
For this reason, the condensed water C flows from the upper surface of the first header 53 to the second header 54 along the surfaces of the plurality of heat transfer tubes 51 and the plurality of fins 52. Therefore, the condensed water C flows along the entire surface of the condenser 50, and the amount of the condensed water C evaporated in the condenser 50 can be improved.

In the first embodiment, fin 52 is a corrugated fin.
For this reason, the condensed water C transmitted from the first header 53 to the fins 52 flows downward while being curved along the curved shape of the fins 52 that are corrugated fins. That is, the path through which the condensed water C flows through the fins 52 is longer than the distance between the first header 53 and the second header 54. Therefore, compared with the case where the fins 52 are plate fins, the time for the condensed water C to receive heat from the fins 52 becomes longer, and the condensed water C tends to evaporate. Therefore, the amount of condensed water C evaporated in the condenser 50 can be improved.

In the first embodiment, the first header 53, the second header 54, the plurality of heat transfer tubes 51, and the fins 52 constituting the condenser 50 are made of aluminum.
For this reason, compared with the case where the condenser 50 is copper or iron, the condenser 50 can be reduced in weight.

In the first embodiment, the plurality of heat transfer tubes 41 and the plurality of fins 42 constituting the evaporator 40 are made of aluminum.
For this reason, the evaporator 40 can be reduced in weight compared with the case where the evaporator 40 is copper or iron. Moreover, compared with the case where the evaporator 40 is copper or iron, it can suppress that the metal ion which becomes noble rather than aluminum, such as a copper ion, in the condensed water C which generate | occur | produced in the evaporator 40 can be suppressed. . Therefore, when the condensed water C generated in the evaporator 40 is sprayed to the condenser 50 made of aluminum, it is possible to prevent the foreign metal contact corrosion of the condenser 50.

In the first embodiment, the refrigerant pipe 60 is made of aluminum.
For this reason, the evaporator 40 can be reduced in weight compared with the case where the refrigerant | coolant piping 60 is copper or iron. Moreover, compared with the case where the refrigerant | coolant piping 60 is copper or iron, it can suppress that the metal ion which becomes noble rather than aluminum, such as a copper ion, in the condensed water C which generate | occur | produced in the evaporator 40 can be suppressed. . Therefore, when the condensed water C generated in the evaporator 40 is sprayed to the condenser 50 made of aluminum, it is possible to prevent the foreign metal contact corrosion of the condenser 50.

Moreover, when the evaporator 40, the condenser 50, and the refrigerant | coolant piping 60 are the products made from aluminum, when manufacturing the refrigerant circuit 10, it is not necessary to join dissimilar metals, and the manufacturability of the refrigerant circuit 10 can be improved. it can.

In addition, in this Embodiment 1, although the condenser 50 demonstrated the structure provided with the some heat exchanger tube 51 arranged mutually parallel between the 1st header 53 and the 2nd header 54, this invention. Is not limited to this. Instead of the plurality of heat transfer tubes 51, for example, a circular tube having a circular cross section perpendicular to the axis of the refrigerant flow path may be provided. The fins 52 are not limited to corrugated fins, and may be plate fins.
Even in such a configuration, the amount of condensed water C evaporated in the condenser 50 can be improved.

(Modification)
In the above description, the water sprinkler 100 has been described as having a configuration including the water pump 101, the water pipe 102, and the water sprinkler 103. The structure of the watering apparatus 100 is not limited to this. The sprinkler 100 may be configured to sprinkle the condensed water C generated in the evaporator 40 to the condenser 50.

FIG. 4 is a schematic diagram showing a modification of the configuration of the air-conditioning apparatus according to Embodiment 1 of the present invention.
As shown in FIG. 4, an outdoor drain pan 120 is disposed below the condenser 50 in the housing 90. The outdoor drain pan 120 and the indoor drain pan 110 are connected by a water pipe 121. The condensed water C stored in the indoor drain pan 110 moves to the outdoor drain pan 120 through the water pipe 121. The outdoor drain pan 120 stores the condensed water C generated by the evaporator 40. A water spray device 130 is disposed in the outdoor drain pan 120.

The water sprinkler 130 has a disk shape and is provided with blades for holding condensed water C on the outer periphery. The water sprinkler 130 is rotationally driven by a driving means such as a motor, and the condensed water C stored in the outdoor drain pan 120 is splashed by the outer peripheral blades and sprinkled on the side surface of the condenser 50.
Even in such a configuration, the condensed water C sprinkled from the water sprinkler 130 to the condenser 50 can be retained in the fins 52 and the amount of the condensed water C evaporated in the condenser 50 can be improved.

In addition, you may arrange | position the sprinkler 130 on the windward side of the condenser 50 in the 2nd wind path 90b. Thereby, the condensed water C sprinkled by the water sprinkler 130 rides on the flow of the outdoor air B and can be reliably attached to the condenser 50.

Embodiment 2. FIG.
Hereinafter, the configuration of the air-conditioning apparatus 1 according to the second embodiment will be described focusing on the differences from the first embodiment. In addition, the same code | symbol is attached | subjected to the same part as the said Embodiment 1, and description is abbreviate | omitted.

FIG. 5 is a perspective view showing a condenser of the air-conditioning apparatus according to Embodiment 2 of the present invention.
FIG. 6 is a top view showing the condenser of the air-conditioning apparatus according to Embodiment 2 of the present invention.
As shown in FIGS. 5 and 6, the condenser 50 includes a plurality of fins 52 a respectively disposed between the plurality of heat transfer tubes 51. The plurality of fins 52a are, for example, corrugated fins. The watering device 100 sprinkles the condensed water C on the upper surface of the first header 53.

When the condenser 50 is viewed from the top surface of the first header 53, the plurality of fins 52 a have the end portions of the plurality of fins 52 a protruding from the end portions of the first header 53. That is, as shown in FIG. 6, the length of the plurality of fins 52 a in the x direction is longer than the length of the first header 53 in the x direction.

In the example shown in FIG. 6, both ends of the plurality of fins 52 a protrude from the end of the first header 53, but the present invention is not limited to this. One end of the plurality of fins 52 a may protrude from the end of the first header 53.

As described above, in the second embodiment, the end portions of the plurality of fins 52 protrude from the end portions of the first header 53 in the top view.
For this reason, when the condensed water C sprayed on the upper surface of the first header 53 flows downward from the edge of the first header 53 along the plurality of fins 52a, the condensed water C adheres to the surfaces of the plurality of fins 52a. It becomes easy to do. Therefore, the condensed water C sprayed from the water sprinkler 100 to the condenser 50 is likely to stay on the surfaces of the plurality of fins 52a, and the amount of the condensed water C evaporated in the condenser 50 can be improved.

Embodiment 3 FIG.
Hereinafter, the configuration of the air-conditioning apparatus 1 according to the third embodiment will be described focusing on differences from the first and second embodiments. In addition, the same code | symbol is attached | subjected to the same part as the said Embodiment 1 and 2, and description is abbreviate | omitted.

FIG. 7 is a perspective view showing a condenser of the air-conditioning apparatus according to Embodiment 3 of the present invention.
As shown in FIG. 7, the first header 53a of the condenser 50 is a curved surface whose upper surface protrudes upward with respect to the horizontal plane. Specifically, the upper surface of the first header 53a has a convex curved surface shape with the center protruding upward and the end inclined downward in the flow direction of the outdoor air B. With such a configuration, the condensed water C sprayed on the upper surface of the first header 53a flows downward along the curved surface.

In the example shown in FIG. 7, both end portions of the first header 53a are curved surfaces inclined downward, but the present invention is not limited to this. The curved surface which inclines toward the lower part of one edge part of the 1st header 53a may be sufficient.

As described above, in the third embodiment, the upper surface of the first header 53a is a curved surface protruding upward with respect to the horizontal plane.
For this reason, even when the condensed water C is sprinkled from above the condenser 50, the condensed water C is unlikely to stay on the upper surface of the first header 53a. Therefore, the condensed water C sprayed from the water sprinkler 100 to the condenser 50 can easily reach the plurality of fins 52, and the amount of the condensed water C evaporated in the condenser 50 can be improved.

(Modification)
FIG. 8 is a perspective view showing a modification of the condenser of the air-conditioning apparatus according to Embodiment 3 of the present invention.
As shown in FIG. 8, the first header 53b of the condenser 50 is an inclined surface whose upper surface is inclined with respect to a horizontal plane. Specifically, the upper surface of the first header 53b is configured by an inclined surface that inclines toward both ends with the central portion at the top in the flow direction of the outdoor air B. With such a configuration, the condensed water C sprayed on the upper surface of the first header 53b flows downward along the inclined surface.

In the example shown in FIG. 8, both end portions of the first header 53b are inclined surfaces inclined downward, but the present invention is not limited to this. The inclined surface which inclines toward the other edge part from the one edge part of the 1st header 53b may be sufficient.

Even in such a configuration, the condensed water C hardly stays on the upper surface of the first header 53b. Therefore, the condensed water C sprayed from the water sprinkler 100 to the condenser 50 can easily reach the plurality of fins 52, and the amount of the condensed water C evaporated in the condenser 50 can be improved.

Embodiment 4 FIG.
Hereinafter, the configuration of the air conditioner 1 according to the fourth embodiment will be described focusing on the differences from the first to third embodiments. The same parts as those in the first to third embodiments are denoted by the same reference numerals, and description thereof is omitted.

FIG. 9 is a perspective view showing a condenser of the air-conditioning apparatus according to Embodiment 4 of the present invention.
FIG. 10 is a longitudinal sectional view showing the condenser of the air-conditioning apparatus according to Embodiment 4 of the present invention. FIG. 10 shows a cross section of the condenser 50 taken along the xy plane.
As shown in FIGS. 9 and 10, the second header 54 a of the condenser 50 includes a water storage portion 56 formed such that the upper surface is recessed downward. Specifically, on the upper surface of the second header 54 a, the edge portion 55 protrudes upward, and the water storage portion 56 is formed on the inner side surrounded by the edge portion 55.

The water sprinkler 100 sprinkles condensed water C on the upper surface of the first header 53. The condensed water C sprayed on the upper surface of the first header 53 flows downward from the edge of the first header 53 along the surfaces of the plurality of heat transfer tubes 51 and the plurality of fins 52. When the condensed water C flows downward through the plurality of heat transfer tubes 51 and the plurality of fins 52, the condensed water C is heated by the refrigerant in the plurality of heat transfer tubes 51, and evaporated to become water vapor. When some of the condensed water C reaches the second header 54a without evaporating, the condensed water C is stored in the water storage section 56 formed on the upper surface of the second header 54a. The condensed water C stored in the water storage unit 56 is heated by the refrigerant in the second header 54a, evaporates, and becomes steam. The steam flows along with the outdoor air B through the second air passage 90b and flows out of the outdoor outlet 94 to the outside.

As described above, in the fourth embodiment, the second header 54a has the water storage portion 56 formed so that the upper surface is recessed downward.
For this reason, even if a part of the condensed water C reaches the second header 54a without being completely evaporated, the condensed water C can be prevented from flowing out below the condenser 50. In addition, the condensed water C stored in the water storage section 56 is heated by the refrigerant in the second header 54a and promotes evaporation, so that the amount of condensed water C evaporated in the condenser 50 can be improved. .

Further, in order to store the condensed water C flowing out of the condenser 50, there is no need to arrange a drain pan separate from the condenser 50. Therefore, the number of parts can be reduced.

Embodiment 5 FIG.
Hereinafter, the configuration of the air-conditioning apparatus 1 according to Embodiment 5 will be described focusing on the differences from Embodiments 1 to 4. The same parts as those in the first to fourth embodiments are denoted by the same reference numerals, and description thereof is omitted.

FIG. 11 is a schematic diagram showing a configuration of an air-conditioning apparatus according to Embodiment 5 of the present invention.
As shown in FIG. 11, the air conditioning apparatus 1 includes an ion exchange resin 140. The ion exchange resin 140 has a function of removing metal that is contained in the condensed water C generated in the evaporator 40 and is nobler than aluminum. The ion exchange resin 140 adsorbs the target substance by exchanging ions adsorbed in advance with the target substance by an equilibrium reaction by ion exchange. The ion exchange resin 140 adsorbs, for example, copper ions contained in the condensed water C as a target substance and removes it from the condensed water C.

The ion exchange resin 140 is disposed inside the water pipe 102. The ion exchange resin 140 removes a metal nobler than aluminum from the condensed water C passing through the water pipe 102. The arrangement position of the ion exchange resin 140 is not limited to this, and the ion exchange resin 140 may be arranged in the indoor drain pan 110, the water pump 101, or the water sprinkler 103.

As described above, in the fifth embodiment, the air conditioner 1 includes the ion exchange resin 140 that removes the metal that is nobler than aluminum contained in the condensed water C generated in the evaporator 40.
For this reason, before the condensed water C is sprinkled into the condenser 50, the metal ion which is nobler than aluminum can be removed by the ion exchange resin 140. Therefore, the amount of metal ions contained in the condensed water C and nobler than aluminum can be reduced. Therefore, even if the plurality of heat transfer tubes 41 and the plurality of fins 42 of the condenser 50 are made of aluminum, the different metal contact corrosion of the condenser 50 can be prevented.

(Modification)
The structure of the water sprinkler 100 is not limited to the structure shown in FIG. The sprinkler 100 may be configured to sprinkle the condensed water C generated in the evaporator 40 to the condenser 50. Moreover, the ion exchange resin 140 should just be the structure which removes the metal which becomes nobler than the aluminum contained in the condensed water C, before the condensed water C is sprinkled by the condenser 50. FIG.

FIG. 12 is a schematic diagram showing a modification of the configuration of the air-conditioning apparatus according to Embodiment 5 of the present invention.
The air conditioner 1 in this modification includes an ion exchange resin 140 in addition to the configuration of the modification (FIG. 4) of the configuration of the air conditioner 1 described in the first embodiment.
As shown in FIG. 12, the ion exchange resin 140 is disposed in the outdoor drain pan 120. The ion exchange resin 140 removes a metal that is nobler than aluminum from the condensed water C stored in the outdoor drain pan 120. Note that the arrangement position of the ion exchange resin 140 is not limited to this, and the ion exchange resin 140 may be arranged in the indoor drain pan 110, the water pipe 121, or the water sprinkler 130.

Even in such a configuration, it is possible to reduce the amount of metal ions contained in the condensed water C, which is nobler than aluminum. Therefore, even when the plurality of heat transfer tubes 41 and the plurality of fins 42 of the condenser 50 are made of aluminum, the different metal contact corrosion of the condenser 50 can be prevented.

In Embodiments 1 to 5 described above, the condenser 50 has been described as having the first header 53 and the second header 54, but the present invention is not limited to this. The condenser 50 may be, for example, a so-called serpentine type heat exchanger configured by bending a heat transfer tube in a meandering manner.

In the first to fifth embodiments, the air conditioner 1 that performs the cooling operation for cooling the indoor air A has been described. However, the present invention is not limited to this. The air conditioner 1 may perform a dehumidifying operation for removing moisture contained in the room air A by cooling the room air A with the evaporator 40.

1 air conditioner, 10 refrigerant circuit, 20 compressor, 30 expansion valve, 40 evaporator, 41 heat transfer tube, 42 fin, 50 condenser, 51 heat transfer tube, 51-1, first heat transfer tube, 51-2 second transfer Heat pipe, 52 fin, 52a fin, 53 first header, 53a first header, 53b first header, 54 second header, 54a second header, 55 edge, 56 water storage, 60 refrigerant piping, 70 indoor blower, 80 Outdoor blower, 90 housing, 90a first air passage, 90b second air passage, 91 indoor air inlet, 92 indoor air outlet, 93 outdoor air inlet, 94 outdoor air outlet, 95 partition plate, 100 water spray device, 101 water pump , 102 Water piping, 103 Water sprinkling section, 110 Indoor drain pan, 120 Outdoor drain pan, 121 Water piping, 130 Sprinkling Device 140 ion exchange resin, A room air, B outdoor air, C condensed water.

Claims

A housing formed with a first air passage through which indoor air circulates and a second air passage through which outdoor air circulates;
An evaporator disposed in the first air path and exchanging heat between the indoor air and the refrigerant;
A condenser disposed in the second air passage and exchanging heat between the outdoor air and the refrigerant;
A watering device for sprinkling the condensed water generated in the evaporator to the condenser;
With
The condenser is
A first heat transfer tube and a second heat transfer tube arranged in parallel to each other;
A fin disposed between the first heat transfer tube and the second heat transfer tube;
Air conditioner equipped with.
The condenser is
A first header and a second header arranged in parallel with each other;
The air conditioner according to claim 1, wherein the first heat transfer tube and the second heat transfer tube are arranged in parallel with each other between the first header and the second header.
The first header and the second header extend in a horizontal direction,
The first header is disposed above the second header;
The air conditioner according to claim 2, wherein the watering device is configured to spray the condensed water on an upper surface of the first header.
When the condenser is viewed from the upper surface of the first header,
The air conditioning apparatus according to claim 2 or 3, wherein an end of the fin protrudes beyond an end of the first header.
The air conditioner according to any one of claims 2 to 4, wherein the upper surface of the first header is an inclined surface inclined with respect to a horizontal plane or a curved surface protruding upward.
The air conditioner according to any one of claims 2 to 5, wherein the second header has a water storage portion formed with an upper surface recessed downward.
The air conditioner according to any one of claims 2 to 6, wherein the first header, the second header, the first heat transfer tube, the second heat transfer tube, and the fin are made of aluminum.
The air conditioner according to any one of claims 1 to 7, wherein the fin is a corrugated fin.
The evaporator is
A plurality of evaporator-side heat transfer tubes through which the refrigerant flows;
A plurality of evaporator side fins joined to the plurality of evaporator side heat transfer tubes;
With
The air conditioner according to any one of claims 1 to 8, wherein the plurality of evaporator side heat transfer tubes and the plurality of evaporator side fins are made of aluminum.
A compressor, the condenser, an expansion valve, and the evaporator are connected by a refrigerant pipe and include a refrigerant circuit for circulating the refrigerant;
The air conditioner according to any one of claims 1 to 9, wherein the refrigerant pipe is made of aluminum.
The air conditioner according to any one of claims 1 to 10, further comprising an ion exchange resin that removes a metal nobler than aluminum contained in the condensed water generated in the evaporator.