WO2019176263A1 - Air conditioning device - Google Patents

Abstract

In the present invention, a drain mechanism (20) has a drain connection part (24). The drain connection part has a connection pipe (25) and a protector (26). The connection pipe provides a partial passage (29). The partial passage provides a passage cross-section surface (29a) perpendicular to the center axis (AX) of the partial passage. The connection pipe has a barrier plate (31) that protrudes into the partial passage. The barrier plate protrudes from the upper part of the partial passage. The barrier plate provides a first opening (27a) and a second opening (27b) in the passage cross-section surface. The barrier plate functions as a barrier plate with respect to condensed water (WT). The barrier plate rectifies the flow of the condensed water in the partial passage.

Description

Air conditioner Cross-reference of related applications

This application is based on Japanese Patent Application No. 2018-48411 filed in Japan on March 15, 2018, and the content of the basic application is incorporated by reference in its entirety.

The disclosure in this specification relates to an air conditioner having a passage for discharging a fluid containing condensed water.

Patent Document 1 discloses an air conditioner having a drain pan. This technique suppresses noise caused by a drain fluid containing condensed water.

JP 2011-105178 A

In the configuration of the prior art, the inflow direction of the condensed water at the drain port is limited. This causes noise when the gas breaks the liquid film when the liquid mass that is about to flow entrains bubbles. Furthermore, in a thin tube, the liquid film becomes thick and noise may increase. In view of the above, or other aspects not mentioned, there is a need for further improvements in air conditioners.

One disclosed object is to provide an air conditioner in which noise caused by condensed water drainage is suppressed.

Another object disclosed is to provide an air conditioner in which noise caused by drainage of condensed water is suppressed with a relatively simple configuration.

The air conditioner disclosed herein includes a cooling heat exchanger (14) that cools air, a drain pan that is disposed under the cooling heat exchanger and receives condensed water (WT), and is provided in a part of the drain pan for condensation. A drain collector from which water is collected, and an air conditioning unit (13) including a connecting pipe (25) communicating with the drain collector and extending from the drain collector, the connecting pipe having a partial passage Barrier plates (31, 631, 731, 831) that protrude inward and serve as barriers against condensed water are provided.

According to the disclosed air conditioner, the cooling heat exchanger cools the air. Condensed water is generated by cooling the air. Condensed water flows down by gravity. The air conditioning unit has a drain pan, a drain collector, and a connecting pipe for discharging condensed water. The condensed water is received by the drain pan and collected in the drain collector. The partial passage provided by the connecting pipe communicates with the drain collector. Furthermore, the connection pipe has a barrier plate protruding toward the inside of the partial passage. The barrier plate functions as a barrier against the condensed water flowing through the partial passage. At this time, the barrier plate arranges the flow of condensed water. For this reason, the noise resulting from the drainage of condensed water is suppressed.

The plurality of modes disclosed in this specification adopt different technical means to achieve each purpose. The reference numerals in parentheses described in the claims and this section exemplify the correspondence with the embodiments described later, and are not intended to limit the technical scope. The objects, features, and advantages disclosed in this specification will become more apparent with reference to the following detailed description and accompanying drawings.

It is a front view which shows the air conditioner of 1st Embodiment. It is a perspective view which shows an air conditioner. It is a partial expanded front view which shows the bottom part of an air conditioner. It is a top view which shows the internal bottom face of an air conditioning apparatus. It is sectional drawing which shows a drain connection part. It is a top view which shows a drain connection part. It is a perspective view which shows the channel | path which a drain connection part provides. It is a top view which shows the channel | path shape in a flow direction. It is a perspective view which shows the channel | path of 2nd Embodiment. It is a perspective view which shows the channel | path of 3rd Embodiment. It is a top view which shows the channel | path shape of 4th Embodiment. It is a top view which shows the channel | path shape of 5th Embodiment. It is a top view which shows the channel | path shape of 6th Embodiment. It is sectional drawing which shows the drain connection part of 7th Embodiment. It is sectional drawing which shows the drain connection part of 8th Embodiment.

A plurality of embodiments will be described with reference to the drawings. In embodiments, functionally and / or structurally corresponding parts and / or associated parts may be assigned the same reference signs or reference signs that differ by more than a hundred. For the corresponding parts and / or associated parts, the description of other embodiments can be referred to.

1st Embodiment In FIG.1 and FIG.2, the air conditioner 10 is mounted in the vehicle. The air conditioner 10 is mounted in front of the front seat of the vehicle, for example. The air conditioner 10 can be mounted at various positions such as a rear portion and a ceiling portion of the vehicle. In the drawing, an upward direction UP, a downward direction DW, a left direction LT, a right direction RT, a front direction FR, and a rear direction RR in the vehicle are illustrated. The upward direction UP and the downward direction DW indicate the direction of gravity. The air conditioner 10 can be used for various purposes. One application is an air conditioner for vehicles including vehicles. Here, the term “vehicle” should be interpreted in a broad sense, and includes a moving object such as a vehicle, a ship, and an aircraft, and a fixed object such as an amusement device and a simulation device. Another application is an air conditioner for a stationary facility such as a house or a business establishment.

The air conditioner 10 includes an inside / outside air unit 11, a blower unit 12, and an air conditioning unit 13. The inside / outside air unit 11, the blower unit 12, and the air conditioning unit 13 each have a resin case. These cases form a passage through which air for air conditioning flows. These cases contain functional components such as one or more heat exchangers and one or more flow control doors.

For example, the air conditioning unit 13 includes a cooling heat exchanger 14 for cooling the air and a heating heat exchanger 15 for heating the air. The cooling heat exchanger 14 is provided by an evaporator of a vapor compression refrigeration cycle. The cooling heat exchanger 14 may be provided by various refrigeration cycles such as an adsorption refrigeration cycle, a magnetothermal effect refrigeration cycle, and a thermoelectric effect refrigeration cycle. The heat exchanger 15 for heating is provided by a radiator that radiates waste heat of the vehicle. The heat exchanger 15 for heating may be provided by a condenser of a vapor compression refrigeration cycle. The heating heat exchanger 15 may be provided by various heat pump cycles such as a Joule heat radiator, an adsorption refrigeration cycle, a magneto-thermal effect refrigeration cycle, and a thermoelectric effect refrigeration cycle.

A typical flow of the air AR enters from the inside / outside air unit 11, passes through the blower unit 12, and further passes through the air conditioning unit 13. In the air conditioning unit 13, the air AR passes through the cooling heat exchanger 14 and / or the heating heat exchanger 15, and the temperature is adjusted. The temperature-controlled air AR is blown out from one or a plurality of air outlets 16. This provides air conditioning.

1, the air conditioner 10 has at least a cooling heat exchanger 14. The cooling heat exchanger 14 generates condensed water WT when cooling the air AR. Most of the condensed water WT adheres to the cooling heat exchanger 14 and its periphery. The condensed water WT flows through the surface of the cooling heat exchanger 14 and the case of the air conditioning unit 13, and is discharged to the external environment via the drain mechanism 20. At this time, the drain mechanism 20 discharges a small amount of air AR together with the condensed water WT. In the following description, the fluid flowing through the drain mechanism 20 includes condensed water WT and / or air AR. The drain mechanism 20 has a drain hose 21. The drain hose 21 is provided by a rubber hose, for example. In this embodiment, the drain mechanism 20 discharges the condensed water WT to the outside of the vehicle.

FIG. 3 shows the drain mechanism 20 arranged at the bottom of the air conditioning unit 13. The drain mechanism 20 is disposed below the air conditioning unit 13. The drain mechanism 20 is disposed under the cooling heat exchanger 14. The drain mechanism 20 includes a drain pan 22, a drain collector 23, and a drain connection portion 24. The drain pan 22 is provided by a part of the resin case of the air conditioning unit 13. The drain pan 22 extends under the cooling heat exchanger 14. The drain pan 22 receives the condensed water WT flowing down from the cooling heat exchanger 14. The drain pan 22 is slightly inclined so as to collect the condensed water WT. The drain collector 23 is provided by a part of the resin case of the air conditioning unit 13. The drain collector 23 collects the condensed water WT received by the drain pan 22. The drain collector 23 is a recessed pit in the drain pan 22. The drain collector 23 concentrates the condensed water WT toward the drain connection portion 24.

The drain connection part 24 has a connection pipe 25 for connecting the drain hose 21. The drain connection 24 provides a part of the drain passage. The drain connection part 24 has a cylindrical tube. The drain connection portion 24 is provided by a part of the resin case of the air conditioning unit 13. The pipe of the drain connection portion 24 protrudes from the outer surface of the resin case. One end of the drain passage provided by the drain connection portion 24 opens into the drain collector 23. The other end of the drain passage provided by the drain connection portion 24 is open. In a state where the drain hose 21 is connected to the drain connection part 24, the other end of the drain passage provided by the drain connection part 24 communicates with the drain hose 21.

FIG. 4 is a plan view in the direction of arrow IV in FIG. The drain mechanism 20 is disposed around the cooling heat exchanger 14. The drain pan 22 spreads on the bottom surface of the resin case. The drain pan 22 extends under the cooling heat exchanger 14 to receive the condensed water WT falling from the cooling heat exchanger 14. Further, the drain pan 22 spreads around the cooling heat exchanger 14 in order to capture the condensed water WT scattered from the cooling heat exchanger 14. A pit as a drain collector 23 is formed at the end of the drain pan 22. The condensed water WT flows along the drain pan 22 and is collected in the drain collector 23 as indicated by the arrow indicated by the broken line.

FIG. 5 shows a cross section taken along line VV in FIG. The drain mechanism 20 has a pit-shaped drain collector 23. The drain collector 23 has at least a first inner surface 23a and a second inner surface 23b. The first inner surface 23a is a bottom surface and is also referred to as a horizontal plane that extends horizontally. The first inner surface 23 a is the final point in the drain mechanism 20. The second inner surface 23b is inclined with respect to the bottom surface. The 2nd inner surface 23b is also called the inclined surface which inclines and spreads with respect to a horizontal surface. The second inner surface 23b is also a side wall surface that defines the periphery of the first inner surface 23a. The second inner surface 23b is located above the first inner surface 23a. The first inner surface 23a and the second inner surface 23b are in contact with each other at the boundary line 23c. As a result, the first inner surface 23 a and the second inner surface 23 b provide corners in the drain collector 23.

The drain connection unit 24 includes a connection pipe 25 and a protector 26. The connecting pipe 25 protrudes from the air conditioning unit 13. The connection pipe 25 is also a nipple pipe connected to the drain hose 21. The connecting pipe 25 is cylindrical. The connection pipe 25 has a cone portion at the tip in order to assist the connection work with the drain hose 21. The protector 26 is disposed concentrically with the connection pipe 25. The protector 26 is a partial cylinder. In a state where the drain hose 21 and the connection pipe 25 are connected, the drain hose 21 is received between the connection pipe 25 and the protector 26. The protector 26 assists the operation of connecting the drain hose 21 and the connection pipe 25. On the contrary, the protector 26 makes it difficult to remove the drain hose 21 from the connection pipe 25.

The connecting pipe 25 is an inclined pipe inclined with respect to the horizontal plane, and provides an inclined passage. The connecting pipe 25 defines an inlet opening 27 at one end and an outlet opening 28 at the other end. The inlet opening 27 is above the outlet opening 28. The outlet opening 28 is below the inlet opening 27. The inlet opening 27 provides an upper end opening. The outlet opening 28 provides a lower end opening. The inlet opening 27 opens on the inner surface of the drain collector 23. The inlet openings 27 are open on both sides of the boundary line 23c. The inlet opening 27 opens over both the first inner surface 23a and the second inner surface 23b. The outlet opening 28 is a circular opening. The outlet opening 28 communicates with the drain hose 21.

The connecting pipe 25 defines a partial passage 29 between the inlet opening 27 and the outlet opening 28. The partial passage 29 extends from the drain collector 23. The partial passage 29 has a central axis AX. The partial passage 29 is a part of the drain passage. The partial passage 29 provides a drain passage together with the drain hose 21. The partial passage 29 is a horizontal passage or a skew passage. Both the lateral passage and the oblique passage cause separation of water and air in the radial direction of the passage.

FIG. 6 is a plan view of the drain connection portion 24 in the direction of arrow VI in FIG. The drain hose 21 is not shown. The protector 26 is disposed along the outer periphery of the connecting pipe 25 in the circumferential direction over 1/3 of the circumference. The range in which the protector 26 extends is not limited to 1/3 round.

5 and 6, the connecting pipe 25 has a cylindrical basic form. The connecting pipe 25 has a barrier plate 31 and a rib 32. The barrier plate 31 and the rib 32 characterize the inner surface of the connecting pipe 25, that is, the shape of the partial passage 29. The barrier plate 31 is disposed in a passage cross section 29 a that intersects the central axis AX of the partial passage 29. Specifically, the passage cross section 29a is a passage cross section 29a perpendicular to the central axis AX. The barrier plate 31 and the rib 32 are disposed only in the upper part in the gravity direction on the inner surface defined by the connection pipe 25.

The barrier plate 31 protrudes into the partial passage 29. The barrier plate 31 is positioned in the inner surface of the connection pipe 25, that is, in the partial passage 29. The barrier plate 31 is integrally formed with the case of the air conditioning unit 13 and a resin material. That is, the barrier plate 31 is integrally formed of a resin material that provides the connection pipe 25. The barrier plate 31 is also a radial rib that protrudes radially inward from the inner surface of the connecting pipe 25. The barrier plate 31 is also a low rib that does not reach the central axis AX of the connecting pipe 25. The barrier plate 31 defines a semicircular opening at the central portion of the partial passage 29. The height of the barrier plate 31 in the radial direction is several millimeters.

The barrier plate 31 is located only in the arc range in the circumferential direction of the connecting pipe 25. The barrier plate 31 is disposed at the entrance of the partial passage 29. The barrier plate 31 is in contact with the inlet opening 27. The barrier plate 31 extends along the inlet opening 27. The barrier plate 31 is positioned above the inlet opening 27. The barrier plate 31 extends over a predetermined angle in the inlet opening 27. The predetermined angle is about 180 degrees. The predetermined angle is larger than 90 degrees and smaller than 180 degrees. The barrier plate 31 extends in a partial arc shape along the inner surface of the partial passage 29. The barrier plate 31 has a shape that can also be called a partial ring.

The barrier plate 31 has a predetermined thickness from the edge of the inlet opening 27. The thickness of the barrier plate 31 is several millimeters. The thickness of the barrier plate 31 is such a thickness that bubbles can immediately reach from the back side cavity of the barrier plate 31 into the drain collector 23.

The height in the radial direction of the barrier plate 31 is a height that temporarily blocks the inflow of the condensed water WT from the drain collector 23 into the partial passage 29 when a large amount of the condensed water WT flows into the drain collector 23. The barrier plate 31 temporarily holds the condensed water WT on the drain collector 23. In another aspect, when a large amount of condensed water WT flows through the partial passage 29, the barrier plate 31 forms a cavity for the air AR on the back side of the barrier plate 31, that is, on the upper portion of the partial passage 29. The barrier plate 31 serves as a barrier against the condensed water WT. The barrier plate 31 adjusts the flow of the condensed water WT in the partial passage 29.

The barrier plate 31 is disposed only on the upper part of the partial passage. The barrier plate 31 is not located below the partial passage 29. If the barrier plate 31 is in the lower part, dust contained in the condensed water WT may accumulate. The barrier plate 31 disposed on the partial passage 29 suppresses the accumulation of dust.

The rib 32 is positioned in the inner surface of the connection pipe 25, that is, in the partial passage 29. The rib 32 is integrally formed with the resin case of the air conditioning unit 13. The rib 32 protrudes radially inward from the inner surface of the connection pipe 25. Moreover, the rib 32 is a low rib that does not reach the central axis AX of the connecting pipe 25. The rib 32 is located only at a part of the connecting pipe 25 in the circumferential direction.

The rib 32 extends along the central axis AX of the connecting pipe 25. The rib 32 extends continuously between the inlet opening 27 and the outlet opening 28. The rib 32 is located behind the barrier plate 31. The rib 32 is continuous behind the barrier plate 31. The rib 32 reinforces the connection pipe 25. The rib 32 reinforces the barrier plate 31.

FIG. 7 is a perspective view showing the shape of the partial passage 29 defined by the drain connection portion 24. The partial passage 29 opens into the recess of the drain collector 23 through the inlet opening 27. The inlet opening 27 opens over the first inner surface 23a and the second inner surface 23b. The inlet opening 27 provides a continuous series of openings extending across both the first inner surface 23a and the second inner surface 23b. The barrier plate 31 extends from the second inner surface 23b. Therefore, the barrier plate 31 is inclined with respect to the horizontal plane.

The inlet opening 27 has a shape defined by the intersection of the first inner surface 23 a and the partial passage 29. The intersection of the first inner surface 23a and the partial passage 29 provides an elongated semicircular edge. The intersection of the first inner surface 23 a and the partial passage 29 is greatly opened at the bottom surface of the drain collector 23. Therefore, the intersection of the first inner surface 23a and the partial passage 29 contributes to receiving the condensed water WT smoothly from the top to the bottom.

The inlet opening 27 has a shape in which the basic shape defined by the intersection of the second inner surface 23 b and the partial passage 29 is restricted by the barrier plate 31. The basic shape is a semicircle. The second opening 27 b is narrowed more narrowly than the basic shape by the barrier plate 31. The barrier plate 31 is parallel to the second inner surface 23b. The barrier plate 31 is provided by an inclined plate that is inclined with respect to a horizontal plane. Thereby, the splash of the condensed water WT by the barrier plate 31 is suppressed. The second opening 27b is smaller than a semicircle. Moreover, the second opening 27b is narrowed at the upper part of the basic shape. The second opening 27b is an Ω (omega) type opening.

The barrier plate 31 defines a first opening 27a and a second opening 27b in a passage section 29a perpendicular to the central axis AX of the partial passage 29. The first opening 27 a and the second opening 27 b are formed in a passage cross section 29 a perpendicular to the central axis AX of the partial passage 29. The first opening 27a provides the main opening in the passage section 29a. The 1st opening 27a is located in the lower part in the channel | path cross section 29a. The 2nd opening 27b is located in the upper part in passage section 29a. The second opening 27b is located above the first opening 27a. The first opening 27a and the second opening 27b are continuous as a series of openings.

The second opening 27b has a partial annular barrier plate 31 only at the top. The barrier plate 31 protrudes in an inner flange shape of about 180 degrees with respect to the partial passage 29 having a cylindrical inner surface shape. The barrier plate 31 has a bowl shape with respect to the partial passage 29 having a cylindrical inner surface shape. The second opening 27b limited by the barrier plate 31 easily allows the air AR having buoyancy to flow out from the bottom to the top. Moreover, the back surface of the barrier plate 31, that is, the region in the partial passage 29, can easily guide the air AR having buoyancy to the vicinity of the second opening 27b. The second opening 27b contributes to smoothly guide the air AR from the bottom to the top.

FIG. 8 is a plan view taken along arrow VIII in FIG. The first opening 27a is also a lower opening located below the second opening 27b. The second opening 27b is also an upper opening located above the first opening 27a. The second opening 27b protrudes upward from the first opening 27a. Moreover, the barrier plate 31 narrows the second opening 27b in the left-right direction. The second opening 27 b provides the uppermost portion of the inlet opening 27.

In the passage section 29a, the first opening 27a provides a passage area A1. In the passage cross section 29a, the second opening 27b provides a passage area A2. The passage area A2 is smaller than the passage area A1 (A2 <A1). The range of the passage area A1 is below the horizontal line defined by the barrier plate 31. The range of the passage area A1 is a range indicated by stippling. The range of the passage area A2 is above the horizontal line. The range of the passage area A1 is a range without stippling.

According to this embodiment, noise caused by the simultaneous flow of the condensed water WT and the air AR is suppressed. Specifically, the noise that the condensed water WT collides with the wall surface and / or the burst sound of the liquid film of the condensed water WT are suppressed.

Consider a case where a large amount of condensed water WT flows from the drain pan 22 to the drain collector 23. For example, the condensed water WT may accumulate in a part of the drain pan 22 due to vehicle inclination, curve traveling, or the like. In this case, a large amount of condensed water WT flows into the drain collector 23 when the inclination of the vehicle is eliminated or when the curve traveling is finished. The barrier plate 31 partially narrows the cross-sectional area of the partial passage 29 as a drain path. As a result, the condensed water WT temporarily remains in the drain collector 23. At this time, the condensed water WT covers the inlet opening 27 of the partial passage 29. As a result, only the condensed water WT flows into the partial passage 29 continuously. Therefore, the condensed water WT can flow down in the partial passage 29 and the drain hose 21 without being mixed with air.

Furthermore, even if a large amount of condensed water WT flows into the partial passage 29, the barrier plate 31 leaves a space for the air AR above the partial passage 29. The condensed water WT tends to flow from the drain collector 23 to the partial passage 29 due to its own weight. The barrier plate 31 serves as a barrier against the condensed water WT. As a result, the condensed water WT bypasses the barrier plate 31 and flows to the lower part of the partial passage 29. The barrier plate 31 suppresses the arrival of the condensed water WT behind the barrier plate 31. At the same time, the air AR in the partial passage 29 moves toward the upper portion of the partial passage 29 by buoyancy. Therefore, the condensed water WT can flow down in the partial passage 29 and the drain hose 21 without being mixed with air.

Second Embodiment This embodiment is a modified example based on the preceding embodiment. In the said embodiment, the inlet opening 27 is opened over both the 1st inner surface 23a and the 2nd inner surface 23b. Alternatively, the inlet opening 27 may be opened only in the first inner surface 23a or only in the second inner surface 23b.

In FIG. 9, the inlet opening 27 opens only in the first inner surface 23a. For this reason, the edge of the inlet opening 27 has an elongated circular shape. The barrier plate 31 is disposed only on the upper portion of the passage cross section 29a. Also in this embodiment, the barrier plate 31 is in contact with the inlet opening 27. The barrier plate 31 defines a first opening 227 a and a second opening 227 b in the partial passage 29. Also in this embodiment, the first opening 227 a and the second opening 227 b are formed in the passage cross section 29 a perpendicular to the central axis AX of the partial passage 29. Also in this embodiment, the same effect as that of the above-described embodiment can be obtained.

Third Embodiment This embodiment is a modification in which the preceding embodiment is a basic form. In FIG. 10, the inlet opening 27 is open only to the second inner surface 23b. For this reason, the edge of the inlet opening 27 is circular. The barrier plate 31 is disposed only on the upper portion of the passage cross section 29a. The barrier plate 31 defines a first opening 327 a and a second opening 327 b in the partial passage 29. Also in this embodiment, the first opening 327 a and the second opening 327 b are formed in the passage cross section 29 a perpendicular to the central axis AX of the partial passage 29. Also in this embodiment, the same effect as that of the above-described embodiment can be obtained.

Fourth Embodiment This embodiment is a modified example based on the preceding embodiment. In the above embodiment, the connecting pipe 25 has the rib 32. Instead of this, the connecting pipe 25 may include only the barrier plate 31 without including the rib 32.

In FIG. 11, the partial passage 29 has a barrier plate 31. The partial passage 29 does not include the rib 32. The partial passage 29 has a circular cross section. The barrier plate 31 partitions the first opening 27a and the second opening 427b. The second opening 427b has a slit shape extending in the vertical direction. The second opening 427b communicates with the first opening 27a at the lower end. The second opening 427b reaches the edge of the partial passage 29 at the upper end.

The barrier plate 31 has a right half 431a and a left half 431b located on the left and right of the second opening 427b. The right half 431a and the left half 431b define a second opening 427b between them. Also in this embodiment, the same effect as that of the above-described embodiment can be obtained.

Fifth Embodiment This embodiment is a modified example based on the preceding embodiment. In the above embodiment, the first opening 27a and the second openings 27b, 227b, 327b, and 427b communicate with each other. Alternatively, the second opening may be provided by an opening independent of the first opening.

In FIG. 12, the barrier plate 31 defines the second opening 527b. The second opening 527 b is provided by a through hole that penetrates the barrier plate 31. The second opening 527b is independent of the first opening 27a. Also in this embodiment, the same effect as that of the above-described embodiment can be obtained.

Sixth Embodiment This embodiment is a modification in which the preceding embodiment is a basic form. In the above embodiment, the barrier plate 31 defines the second openings 27b, 227b, 327b, 427b, and 527b. Instead, the barrier plate may have a shape that does not define the second opening.

In FIG. 13, the barrier plate 631 defines the first opening 27a. The barrier plate 631 does not partition the first opening. The barrier plate 631 is provided by a fan-shaped plate surrounded by strings and arcs. Also in this embodiment, the barrier plate 631 functions as a barrier plate for the condensed water WT. Also in this embodiment, the same effect as that of the above-described embodiment can be obtained.

Seventh Embodiment This embodiment is a modified example based on the preceding embodiment. In the above embodiment, the barrier plates 31 and 631 are disposed at the uppermost part of the partial passage 29. Alternatively, the barrier plate can be provided at various positions in the partial passage 29.

In FIG. 14, the barrier plate 731 is provided in the middle part of the partial passage 29. Also in this embodiment, the barrier plate 731 functions as a barrier plate for the condensed water WT. Also in this embodiment, the same effect as that of the above-described embodiment can be obtained.

Eighth Embodiment This embodiment is a modification example based on the preceding embodiment. In FIG. 15, the barrier plate 831 is provided at the lower end of the partial passage 29. Also in this embodiment, the barrier plate 831 functions as a barrier plate for the condensed water WT. The barrier plate 831 provides a barrier at the boundary between the partial passage 29 and the cylindrical cavity in the drain hose 21. Therefore, the barrier plate 831 adjusts the flow of the condensed water WT from the partial passage 29 to the drain hose 21. Also in this embodiment, the same effect as that of the above-described embodiment can be obtained.

Other Embodiments The disclosure in this specification, the drawings, and the like is not limited to the illustrated embodiments. The disclosure encompasses the illustrated embodiments and variations by those skilled in the art based thereon. For example, the disclosure is not limited to the combinations of parts and / or elements shown in the embodiments. The disclosure can be implemented in various combinations. The disclosure may have additional parts that can be added to the embodiments. The disclosure includes those in which parts and / or elements of the embodiments are omitted. The disclosure encompasses the replacement or combination of parts and / or elements between one embodiment and another. The technical scope disclosed is not limited to the description of the embodiments. Some technical scope disclosed is shown by the description of the scope of claims, and should be understood to include all modifications within the meaning and scope equivalent to the description of the scope of claims.

In the above embodiment, the barrier plates 31, 631, 731, and 831 extend in the passage section 29 a perpendicular to the central axis AX of the partial passage 29. Instead of this, the barrier plate may be inclined at a predetermined angle with respect to the passage cross section 29a. For example, the barrier plate can be inclined along the flow of the condensed water WT.

In the above embodiment, the partial passage 29 is provided by an inclined passage. Instead of this, the partial passage 29 may be a horizontal passage extending in the horizontal direction. Also in this case, the upper part and the lower part can be defined in the partial passage 29. Further, the partial passage 29 may be a vertical passage extending in the vertical direction.

Claims (10)

1. A cooling heat exchanger (14) for cooling the air;
   A drain pan disposed under the cooling heat exchanger for receiving condensed water (WT), a drain collector provided in a part of the drain pan for collecting the condensed water, and communicating with the drain collector from the drain collector An air conditioning unit (13) including a connecting pipe (25) providing a partial passage (29) extending;
   The said connection pipe is an air conditioner provided with the barrier plate (31,631,731,831) which protrudes toward the said partial channel | path and becomes a barrier with respect to the said condensed water.
2. The air conditioner according to claim 1, wherein the barrier plate is disposed only above the partial passage.
3. The air conditioner according to claim 1 or 2, wherein the barrier plate is inclined with respect to a horizontal plane.
4. The air conditioner according to any one of claims 1 to 3, wherein the barrier plate is disposed in a passage cross section (29a) intersecting the central axis (AX) of the partial passage.
5. The air conditioner according to any one of claims 1 to 4, wherein the barrier plate is integrally formed with a resin member that provides the connecting pipe.
6. The barrier plate defines a first opening (27a) positioned below and a second opening (27b) positioned above the first opening in the passage cross section (29a) of the partial passage,
   The air conditioner according to any one of claims 1 to 4, wherein a passage area provided by the second opening is smaller than a passage area provided by the first opening (A2 <A1).
7. The air conditioner according to claim 6, wherein the first opening and the second opening are continuous as a series of openings.
8. The drain collector has a first inner surface (23a) as a bottom surface and a second inner surface (23b) that is inclined with respect to a horizontal plane and is located above the bottom surface,
   The partial passage is an inclined passage that is inclined with respect to a horizontal plane, and is open over both the first inner surface and the second inner surface,
   The air conditioner according to any one of claims 1 to 7, wherein the barrier plate extends from the second inner surface.
9. The air conditioner according to any one of claims 1 to 8, wherein the barrier plate extends in a partial arc shape along an inner surface of the partial passage.
10. The air conditioner according to any one of claims 1 to 9, wherein the barrier plate is disposed at an entrance of the partial passage.

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