KR101449911B1 - Heat exchanger and refrigeration device - Google Patents

Abstract

Provided are a heat exchanger and a freezing device capable of ensuring the drainage on the lid member while maintaining a good fixation state of the lid member and the header collecting tube main body. An outdoor heat exchanger (20) having header collection tubes (22, 23) connected to a flat multi-hole tube (21b) to which a plurality of heat transfer fins (21a) A main body 50, and a baffle 60 as a partition plate. The header collecting tube main body 50 is provided so that the longitudinal direction thereof is the up and down direction. The baffle 60 as a lid member is provided on the inner side of the upper end of the header collecting tube main body 50 and covers the upper side of the header gathering tube main body 50. The header gathering tube main body 50 has a tube end portion 53 extending upward from the baffle 60 as a lid member. A discharge port 52 is formed in a part of the conduit portion 53.

Description

[0001] HEAT EXCHANGER AND REFRIGERATION DEVICE [0002]

The present invention relates to a heat exchanger and a refrigerating device.

Conventionally, for example, a heat exchanger having a pair of header collecting tubes and a plurality of tubes communicating with the header collecting tubes, as in the heat exchanger disclosed in Patent Document 1 (Japanese Patent Application Laid-Open No. 2010-112580) .

In the heat exchanger described in Patent Document 1 (Japanese Unexamined Patent Publication (Kokai) No. 2010-112580), a partition plate for partitioning the inner space of the header collecting tube into upper and lower portions is provided so that the refrigerant flow reciprocates between the pair of header collecting tubes Consists of.

Japanese Patent Application Laid-Open No. 2010-112580

In the heat exchanger disclosed in the above-mentioned Patent Document 1 (Japanese Unexamined Patent Application Publication No. 2010-112580), there is room for improvement in the shape of the upper end portion of the header collecting tube.

For example, a lid member may be fixed to the header collecting tube main body with respect to the upper end of the header collecting tube of the heat exchanger. In this case, the joining portion may include a radial periphery of the lid member, It is difficult to increase the bonding strength.

On the other hand, in order to secure a wider connection portion between the lid member and the header collecting tube main body, for example, an opening is formed inside the end of the header collecting tube main body and the lid member is inserted through the opening, I can think of that. In this case, however, a space is formed in which the upper surface of the lid member is surrounded by the inner peripheral surface of the header collection tube main body. When condensation water or rainwater adhering to the heat exchanger enters the space, it is difficult to discharge the water outside the space, and corrosion of the water surrounding member occurs, or a problem that ice grows .

SUMMARY OF THE INVENTION It is an object of the present invention to provide a heat exchanger and a freezing device capable of ensuring the drainage on the lid member while maintaining a good fixation state of the lid member and the header collecting tube main body have.

According to a first aspect of the present invention, there is provided a heat exchanger including a plurality of flat tubes, a header collecting tube to which the respective flat tubes are connected, and a plurality of fins joined to the flat tubes, Wherein the header collecting tube includes a header collecting tube main body and a lid member. The header collecting tube main body is provided so that its longitudinal direction is the up-and-down direction. The lid member is provided on the inner side of the upper end of the header collection tube main body, and covers the upper side of the header collection tube main body. The header collecting tube main body has a tube end portion extending upward from the lid member. A drainage portion is formed in a part of the conduit portion.

The plurality of flat tubes are not particularly limited, but may be arranged so that their side surfaces are opposed to each other, for example.

In this heat exchanger, condensation water, rainwater, or the like that may exist above the lid member can be drained through a drain portion provided in the main body of the header collecting tube. Therefore, corrosion in the vicinity of the upper end of the header collecting tube can be made less likely to occur.

In the heat exchanger according to the second aspect of the present invention, in the heat exchanger according to the first aspect, the drainage section is a groove in which a part of the tube end portion is recessed downwardly.

In this heat exchanger, since the drainage portion can be formed by forming a groove by making a part of the tube end portion of the body of the header collecting tube concave downward, manufacturing is facilitated.

In the heat exchanger according to the third aspect of the present invention, in the heat exchanger according to the second aspect, the lower end of the drainage groove is located below the upper end of the lid member.

In this heat exchanger, since the drain groove has a portion lower than the upper end portion of the lid member, it is possible to completely discharge the amount of water accumulated above the lid member.

In a heat exchanger according to a fourth aspect of the present invention, in the heat exchanger according to any one of the first aspect to the third aspect, at least a part of the outer circumferential portion of the lid member includes a part of the header collecting tube, As shown in Fig.

In this heat exchanger, the upper portion of the lid member has a portion in contact with the tube end portion, and the lower portion of the lid member has a portion in contact with a portion other than the tube end portion of the header collecting tube main body. Therefore, it is possible to further strengthen the fixation between the main body of the header collecting tube and the lid member.

According to a fifth aspect of the present invention, there is provided a refrigerating apparatus comprising a compressor, a first heat exchanger, an expansion valve, and a refrigerant composed of a first heat exchanger and a second heat exchanger connected to each other, Circuit. The refrigerant circuit can make the second heat exchanger function at least as an evaporator of the refrigerant.

In this refrigeration apparatus, when the second heat exchanger functions as an evaporator of the refrigerant, even if condensation water is present in the upper portion of the header collecting tube, it is possible to easily drain the refrigerant through the drainage section.

In the heat exchanger according to the first aspect of the present invention, corrosion in the vicinity of the upper end of the header collecting tube can be made less likely to occur.

In the heat exchanger according to the second aspect of the present invention, the production is facilitated.

In the heat exchanger according to the third aspect of the present invention, it is possible to completely discharge the amount of water accumulated above the lid member.

In the heat exchanger according to the fourth aspect of the present invention, it is possible to strengthen the fixation between the header collecting tube main body and the lid member.

In the refrigeration apparatus according to the fifth aspect of the present invention, even if condensation water is present in the upper portion of the header collecting tube, it is possible to easily drain the water through the drainage portion.

1 is a circuit diagram for explaining an outline of a configuration of an air conditioner according to an embodiment;
2 is a perspective view showing an appearance of an air conditioner outdoor unit;
3 is a schematic cross-sectional view for explaining an outline of arrangement of each device of an air conditioner outdoor unit;
4 is a schematic perspective view showing an exterior heat exchanger, a gas refrigerant pipe, and a liquid refrigerant pipe.
5 is a schematic rear view showing a schematic structure of an outdoor heat exchanger;
6 is a schematic rear view for explaining a configuration of an outdoor heat exchanger.
7 is a partially enlarged cross-sectional view for explaining a configuration of a heat exchanger of an outdoor heat exchanger;
8 is a schematic perspective view showing an attachment state of the heat conductive fins in the outdoor heat exchanger.
9 is an external perspective view showing the vicinity of the upper portion of the header collection tube main body.
10 is a side view of the header gathering tube main body viewed from the side where the flat multi-hole tube is connected.
11 is a side view seen from the front side of the header assembly body.
12 is an external perspective view of the baffle.
13 is a schematic view of the baffle as viewed in a plane;
Figure 14 is a schematic view of the baffle as viewed from the left side of Figure 13;
15 is a schematic view showing a state in which the baffle is inserted until just before plastic deformation;
16 is a schematic view showing a state in which insertion is completed in a state where the baffle is plastic-deformed;
17 is an external perspective view showing a state of an insertion target in a state in which a baffle as a partition plate is inserted and fixed in a main body of a header collecting tube;
18 is an external perspective view showing a state opposite to an insertion destination in a state in which a baffle as a partitioning plate is inserted and fixed in a main body of a header collecting tube;
19 is an external perspective view showing a state in which a vicinity of an end of the header collecting tube main body is blocked with a baffle;
20 is a cross-sectional view of the header gathering tube main body in a state where the vicinity of an end thereof is closed with a baffle.
21 is an external perspective view showing a state in which the vicinity of an end portion of the header collecting tube main body according to Modification A is clogged with a baffle as a lid member;
22 is an external perspective view showing a state in which the vicinity of an end portion of the header collecting tube main body according to Modification B is clogged with a baffle as a lid member;

(1) Overall configuration of air conditioner

1 is a circuit diagram showing a configuration outline of an air conditioner according to an embodiment of the present invention.

The air conditioner (1) is a device used for cooling and heating the building in which the air conditioning indoor unit (3) is installed by performing a vapor compression type refrigeration cycle operation, and includes an air conditioning outdoor unit (2) Is connected to the refrigerant communication pipe (6, 7).

The refrigerant circuit in which the outdoor air conditioning outdoor unit 2, the air conditioning indoor unit 3 and the refrigerant communication pipes 6 and 7 are connected is composed of a compressor 91, a four-way switching valve 92, an outdoor heat exchanger 20, A valve 40, an indoor heat exchanger 4, an accumulator 93, etc. are connected by a refrigerant pipe. In this refrigerant circuit, a refrigerant cycle is performed in which the refrigerant is sealed, the refrigerant is compressed, cooled, reduced in pressure, heated and evaporated, and then compressed again. As the refrigerant, for example, R410A, R407C, R22, R134a, carbon dioxide and the like can be used.

(2) Detailed configuration of air conditioner

(2-1) Air conditioning indoor unit

The air conditioning indoor unit (3) is installed on a wall surface of a room by a wall hanging or the like, or by embedding in the ceiling of a room such as a building or by a hanging sound. The air conditioning indoor unit (3) has an indoor heat exchanger (4) and an indoor fan (5). The indoor heat exchanger 4 is, for example, a cross pin type pin-and-tube type heat exchanger configured by a heat transfer pipe and a plurality of fins. The heat exchanger 4 functions as an evaporator of the refrigerant during cooling operation, Is a heat exchanger that functions as a refrigerant condenser and heats room air.

(2-2) Outdoor Air Conditioning Unit

The outdoor air conditioning outdoor unit (2) is installed outside the building or the like, and is connected to the air conditioning outdoor unit (3) through the refrigerant communication pipes (6, 7). As shown in Figs. 2 and 3, the air conditioning outdoor unit 2 has a unit casing 10 having a substantially rectangular parallelepiped shape.

3, the air conditioning outdoor unit 2 forms the blower chamber S1 and the machine room S2 by dividing the internal space of the unit casing 10 into two by a partition plate 18 extending in the vertical direction (So-called trunk structure). The air conditioning outdoor unit 2 has an outdoor heat exchanger 20 and an outdoor fan 95 disposed in a blower room S1 of the unit casing 10 and is connected to a compressor Way valve 91, a four-way switching valve 92, an accumulator 93, an expansion valve 40, a gas refrigerant pipe 31, and a liquid refrigerant pipe 32.

The unit casing 10 includes a bottom plate 12, a top plate 11, a side plate 13 on the blower chamber side, a side plate 14 on the machine room side, a blower chamber side front plate 15, So as to constitute a case.

The air conditioning outdoor unit 2 sucks outdoor air into a blower room S1 in the unit casing 10 from a back surface and a part of a side surface of the unit casing 10 and removes the sucked outdoor air from the front surface of the unit casing 10 It is configured to blow out. Specifically, the suction port 10a and the suction port 10b for the blower chamber S1 in the unit casing 10 are connected to the rear end side of the side plate 13 on the blower chamber side and the blower And is formed over the end of the chamber S1 side. Further, the suction port 10c is provided on the blower chamber side front plate 15, and the front side thereof is covered by the fan grill 15a.

The compressor 91 is, for example, a hermetic compressor driven by a compressor motor, and is configured to be able to vary the operation capacity.

The four-way selector valve 92 is a mechanism for changing the flow direction of the refrigerant. Way switching valve 92 is connected to the refrigerant pipe on the discharge side of the compressor 91 and the gas refrigerant pipe 31 extending from one end (gas side end) of the outdoor heat exchanger 20 In addition, the refrigerant communication pipe 7 of the gas refrigerant is connected to the refrigerant pipe on the suction side of the compressor 91 through the accumulator 93 (see the solid line of the four-way selector valve 92 in Fig. 1). The four-way switching valve 92 connects the refrigerant pipe on the discharge side of the compressor 91 and the refrigerant communication pipe 7 of the gas refrigerant to each other through the accumulator 93 during the heating operation, (See the broken line of the four-way selector valve 92 in Fig. 1) connected to the suction side of the outdoor heat exchanger 91 and the gas refrigerant piping 31 extending from one end (gas side end) of the outdoor heat exchanger 20.

The outdoor heat exchanger 20 is arranged vertically (vertically) in the blower chamber S1 and faces the intake ports 10a and 10b. The outdoor heat exchanger 20 is a heat exchanger made of aluminum, and in this embodiment, a design pressure of about 3 MPa to 4 MPa is used. The gas refrigerant piping 31 is extended so that the outdoor heat exchanger 20 is connected to the switching valve 92 from one end (gas side end). The liquid refrigerant pipe 32 is extended from the other end (liquid side end) of the outdoor heat exchanger 20 to be connected to the expansion valve 40.

The accumulator 93 is connected between the four-way selector valve 92 and the compressor 91. The accumulator 93 has a gas-liquid separating function for dividing the refrigerant into a gas phase and a liquid phase. The refrigerant flowing into the accumulator 93 is divided into a liquid phase and a gaseous phase, and a gaseous refrigerant gathering in the upper space is supplied to the compressor 91.

The outdoor fan (95) supplies outdoor air to the outdoor heat exchanger (20) for exchanging heat with the refrigerant flowing through the outdoor heat exchanger (20).

The expansion valve (40) is a mechanism for reducing the pressure of the refrigerant in the refrigerant circuit, and is a motorized valve capable of adjusting the opening degree. The expansion valve 40 is provided between the outdoor heat exchanger 20 and the refrigerant communication pipe 6 of the liquid refrigerant so as to adjust the refrigerant pressure and the refrigerant flow rate, And has a function of expanding the refrigerant.

The outdoor fan (95) is disposed in the blower room (S1) so as to face the outdoor heat exchanger (20). The outdoor fan 95 sucks outdoor air into the unit, performs heat exchange between the refrigerant and outdoor air in the outdoor heat exchanger 20, and then discharges the air after heat exchange to the outside. The outdoor fan 95 is a fan capable of varying the amount of air to be supplied to the outdoor heat exchanger 20, and is, for example, a propeller fan driven by a motor such as a DC fan motor.

(3) Operation of the air conditioner

(3-1) Cooling operation

1, that is, the discharge side of the compressor 91 is connected to the gas side of the outdoor heat exchanger 20 through the gas refrigerant pipe 31. In the cooling operation mode, And the suction side of the compressor 91 is connected to the gas side of the indoor heat exchanger 4 through the accumulator 93 and the refrigerant communication pipe 7. The expansion valve 40 is adjusted so that the degree of superheat of the refrigerant at the outlet of the indoor heat exchanger 4 (that is, the gas side of the indoor heat exchanger 4) becomes constant. In the state of this refrigerant circuit, when the compressor 91, the outdoor fan 95 and the indoor fan 5 are operated, the low-pressure gas refrigerant is compressed by the compressor 91 to become a high-pressure gas refrigerant. The high-pressure gas refrigerant is delivered to the outdoor heat exchanger 20 via the four-way switching valve 92. Thereafter, the high-pressure gas refrigerant undergoes heat exchange with outdoor air supplied by the outdoor fan (95) in the outdoor heat exchanger (20) and condenses to become a high-pressure liquid refrigerant. Then, the high-pressure liquid refrigerant in the supercooled state is transferred from the outdoor heat exchanger (20) to the expansion valve (40). The low-pressure gas-liquid two-phase refrigerant, which has been reduced to the suction pressure of the compressor 91 by the expansion valve 40, is sent to the indoor heat exchanger 4, Heat exchange is performed and evaporation is performed to obtain a low-pressure gas refrigerant.

This low-pressure gas refrigerant is delivered to the air conditioner outdoor unit 2 via the refrigerant communication pipe 7 and again sucked into the compressor 91. In this way, in the cooling operation, the air conditioner 1 controls the outdoor heat exchanger 20 as the condenser of the refrigerant compressed in the compressor 91, and the indoor heat exchanger 4 to the outdoor heat exchanger 20 And functions as an evaporator of the condensed refrigerant.

(3-2) Heating operation

1, the discharge side of the compressor 91 is connected to the gas side of the indoor heat exchanger 4 through the refrigerant communication pipe 7, And the suction side of the compressor 91 is connected to the gas side of the outdoor heat exchanger 20 through the gas refrigerant piping 31. The expansion valve (40) is adjusted so that the supercooling degree of the refrigerant at the outlet of the indoor heat exchanger (4) becomes constant at the target value of the supercooling degree. When the compressor 91, the outdoor fan 95 and the indoor fan 5 are operated in the state of this refrigerant circuit, the low-pressure gas refrigerant is sucked and compressed by the compressor 91 to be a high-pressure gas refrigerant, The direction switching valve 92 and the refrigerant communication pipe 7 to the air conditioning indoor unit 3. [

The high-pressure gas refrigerant transferred to the air conditioning indoor unit 3 undergoes heat exchange with the room air in the indoor heat exchanger 4 to be condensed into high-pressure liquid refrigerant, and then passes through the expansion valve 40 The pressure is reduced in accordance with the degree of opening of the expansion valve (40). The refrigerant that has passed through the expansion valve (40) flows into the outdoor heat exchanger (20). The low-pressure, gas-liquid two-phase refrigerant introduced into the outdoor heat exchanger 20 is heat-exchanged with the outdoor air supplied by the outdoor fan 95 and evaporates to be a low-pressure gas refrigerant, The refrigerant is sucked into the compressor 91 via the refrigerant circuit 92 again. In the heating operation as described above, the air conditioner 1 controls the indoor heat exchanger 4 as the condenser of the refrigerant compressed in the compressor 91 and the outdoor heat exchanger 20 as the condenser of the refrigerant compressed in the indoor heat exchanger 4 And functions as an evaporator of the condensed refrigerant.

(4) Detailed configuration of outdoor heat exchanger

(4-1) Overall configuration of outdoor heat exchanger

Next, a configuration of the outdoor heat exchanger 20 is described with reference to FIG. 4 showing a schematic outline perspective view of the outdoor heat exchanger 20, FIG. 5 showing a schematic rear view of the outdoor heat exchanger, and FIG. 6 showing a schematic rear view. Will be described in detail.

The outdoor heat exchanger 20 is provided with a heat exchanging portion 21 for exchanging heat between the outdoor air and the refrigerant and the heat exchanging portion 21 is provided with a plurality of heat transfer fins 21a, And a tube 21b. The heat transfer fin 21a and the flat multi-hole pipe 21b are all made of aluminum or aluminum alloy. The flat multi-hole pipe 21b functions as a heat transfer pipe and transfers heat, which moves between the heat transfer fin 21a and the outdoor air, to the refrigerant flowing inside.

The outdoor heat exchanger 20 is provided with aluminum header aggregation pipes 22 and 23 made of aluminum and provided at both ends of the heat exchanging part 21. [

The header collecting tube 22 has inner spaces 22a and 22b partitioned in the vertical direction by the first baffle 22c. A gas refrigerant pipe 31 is connected to the upper internal space 22a and a liquid refrigerant pipe 32 is connected to the lower internal space 22b.

The inside of the header collecting tube 23 is partitioned in the vertical direction by the second baffle 23f, the third baffle 23g, the fourth baffle 23h and the fifth baffle 23i to form the inner spaces 23a and 23b , 23c, 23d, and 23e are formed. A plurality of flat multi-hole pipes 21b connected to the upper internal space 22a of the header collecting pipe 22 are connected to the three internal spaces 23a, 23b, and 23c of the header collecting pipe 23 have. A plurality of flat multi-hole pipes 21b connected to the internal space 22b under the header collecting pipe 22 are connected to the three internal spaces 23c, 23d and 23e of the header collecting pipe 23 .

In addition, in the present embodiment, each of the baffles can be used not only as a partition plate of the header collecting tube main body 50 but also as a lid member. In describing these common shapes, The baffle 60 will be described.

The uppermost internal space 23a and the lowermost internal space 23e of the header collecting pipe 23 are connected by a communication pipe 24. [ The second inner space 23b and the second inner space 23d from the bottom are connected by the communication pipe 25. [ The middle internal space 23c is a part of the upper part of the heat exchanging part 21 (the part connected to the upper internal space 22a) and the lower part (the part connected to the lower internal space 22b) It also functions to connect some parts. 5, the gas refrigerant supplied to the inner space 23a above the header collecting tube 23 by the gas refrigerant piping 31 is supplied to the gas- Exchanged at the upper part of the heat exchanging part 21 and liquefied and returned at the header collecting tube 23 and exits to the liquid refrigerant piping 32 through the lower part of the heat exchanging part 21. [ During the heating operation, the flow of the refrigerant is opposite to the flow shown by the arrow in Fig.

(4-2) Configuration of heat exchanger

7 is a partially enlarged view showing a sectional structure in a plane perpendicular to the flattening direction of the flat multi-hole pipe 21b of the heat exchanger 21 of the outdoor heat exchanger 20. As shown in Fig. 8 is a schematic perspective view showing the attachment state of the heat conductive fins 21a in the outdoor heat exchanger 20. As shown in Fig.

The heat conductive fins 21a are flat plates made of a thin aluminum or aluminum alloy. A plurality of notches 21aa for horizontally extending flat tubes are formed on the heat conductive fins 21a in parallel in the vertical direction. The heat conductive fins 21a are attached so as to have a number of portions protruding toward the upstream side of the air flow.

The flat multi-hole pipe 21b has upper and lower flat surfaces serving as heat transfer surfaces, and a plurality of internal flow paths 21ba through which refrigerant flows. The flat multi-hole pipe 21b, which is slightly thicker than the upper and lower widths of the cutout 21aa, is arranged in a plurality of stages with intervals therebetween in the state that the plane portions face upward and downward, and are fixed in a state sandwiched by the cutout 21aa. Thus, the heat transfer fin 21a and the flat multi-hole pipe 21b are soldered in the fixed state where the flat multi-hole pipe 21b is fitted into the cutout 21aa of the heat transfer fin 21a. Both ends of each flat multi-hole tube 21b are respectively fitted and soldered to the header collecting tubes 22 and 23. [ The internal spaces 22a and 22b of the header collecting tube 22 and the internal spaces 23a and 23b of the header collecting tube 23 and the internal flow paths 21ba of the flat multi- Respectively.

7, the heat transfer fins 21a are vertically connected, so that condensation generated in the heat transfer fins 21a and the flat multi-hole pipes 21b is dropped downward along the heat transfer fins 21a And is discharged to the outside through a path formed in the bottom plate 12. [

(4-3) Construction of the header set

Hereinafter, the configuration of the header collecting tubes 22 and 23 will be mainly described. The header collecting tubes 22 and 23 have different configurations. And a description of the header set tube 23 will be omitted.

The header collecting tube 22 has a header collecting tube main body 50, a baffle 60 as a lid member, and a baffle 60 as a partition plate.

(4-3-1) Header assembly body

Fig. 9 is an external perspective view showing the vicinity of the upper end portion of the header collecting tube main body 50. Fig. Fig. 10 shows a side view of the header gathering tube main body viewed from the side where the flat multi-hole tube is connected. 11 is a side view of the header collecting tube main body viewed from the front.

The header collecting tube main body 50 is a substantially cylindrical member, and upper and lower end portions thereof are respectively opened.

A brazing material 51 is applied to the surface of the outer circumferential surface 51a on the radially outer side of the header collecting tube main body 50. [ The kind of the brazing material 51 is not particularly limited. For example, alumina is preferable as a brazing material containing a common material together with the material of the header gathering tube main body 50 and the material of the baffle 60. From the viewpoint of material cost, it is preferable that the inner peripheral surface 51b and the upper and lower end surfaces in the radially inner side of the header collecting tube main body 50 are not coated with the brazing material.

The header collection tube main body 50 is formed with a plurality of flat tube insertion openings 59, a plurality of baffle insertion openings 56, a plurality of baffle tip opening openings 54 and an opening 55.

The flat pipe insertion opening 59 is an opening for inserting one end of the flat multifilamentary pipe 21b and opens in the radial direction at a portion other than the end portion of the header collection pipe main body 50. [ A plurality of the flat tube insertion openings 59 are provided so as to extend in the longitudinal direction of the header collecting tube main body 50 in the vertical direction. The opening 59 for inserting the flat tube is formed such that the arc portion corresponding to the angle of the axis of the header gathering tube main body 50 is 90 to 120 degrees.

The baffle insertion opening 56 is an opening for inserting the baffle 60 as a partitioning plate to be described later and is formed as a portion other than the end portion of the header collecting tube main body 50 on the side opposite to the flat tube insertion opening 59 And opens in the radial direction. A plurality of baffle insertion openings 56 are provided so as to extend in the longitudinal direction of the header collection tube main body 50 in the vertical direction. The baffle insertion opening 56 is formed in such a manner that a circular arc portion corresponding to an angle of the axis of the header collecting tube main body 50 of about 160 to 200 degrees is excluded. The baffle insertion opening 56 has a thickness upper surface 56d, a thickness lower surface 56e, and a thick contact surface 56b in the radial thickness portion of the header collecting tube main body 50. [ The thick contact surface 56b is a surface enlarged in the radial direction and in the up and down direction of the header collecting tube main body 50. The thick contact surface 56b is a first insertion direction surface 64b of the baffle 60 and the second inserting direction surface 65b of the second engaging and securing portion 65 of the baffle 60, respectively.

The opening 54 for the baffle leading end is an opening formed on the side opposite to the main opening direction of the baffle insertion opening 56, that is, on the same side as the flat pipe insertion opening 59, . The baffle leading end opening 54 has a cylindrical inner surface 54b having a radial direction of the header gathering tube main body 50 in the axial direction in a radial thickness portion of the header collecting tube main body 50. [ The baffle leading end opening 54 is formed at the same height as the baffle insertion opening 56 in the header collecting tube main body 50.

The header gathering tube main body 50 is provided at its end with a tube end portion 53 for attaching a baffle 60 as a lid member to be described later.

The tube portion 53 is a portion formed by extending the arc portion of the header gathering tube main body 50 at an angle of about 160 to 250 degrees and extending in the longitudinal direction of the header gathering tube main body 50. The tubular portion 53 may be formed by extending any part of the arc portion of the header collecting tube main body 50. For example, as shown in the present embodiment, among the arc portion of the header gathering tube main body 50, The longitudinal end of the baffle insertion opening 56 may be formed to extend in the longitudinal direction or the longitudinal end of the baffle insertion opening 56 may extend in the longitudinal direction. The tubular portion 53 has a drain groove 52 and a latching portion 70.

A part of the upper end face 53a of the tube end portion 53 has a shape cut out from the end in the longitudinal direction of the header collecting tube main body 50 to the opposite side to the end in the longitudinal direction . The groove depth of the drainage groove 52 (position of the lower end portion 52a) is set such that the upper end surface 51c of the portion other than the tip end portion 53 of the header collecting tube main body 50 and the drainage groove 52, And is formed so as to have the same height position in the longitudinal direction of the header collecting tube main body 50. [ Thus, the water present on the upper surface of the baffle 60 and surrounded by the tube end portion 53 is drained toward the radially outer side of the drainage groove 52.

The engaging and fixing portion 70 includes a first engaging and securing portion 71 extending from the portion of the upper end of the tube end portion 53 along the main direction of one side from the portion where the discharging recess 52 is formed And a second engagement and retention portion 72 extending from the portion where the drainage groove 52 is formed to extend along the main direction of the other side. The width of the engaging portion 70 in the up-and-down direction is made as short as the width of the baffle 60 in the plate thickness direction.

The first fastening and fixing portion 71 includes an upper surface 71a constituting the same surface as the upper end surface 53a of the pipe end portion 53, a lower surface 71c directed downward, And has a surface 71b. The lower surface 71c of the first fastening and fixing unit 71 is positioned above the upper end surface 51c of the header collecting tube main body 50 and below the upper surface 71a of the first fastening and fixing unit 71. The main surface 71b of the first retaining portion 71 has a surface facing the main direction from the upper surface 51c of the header collecting tube main body 50 to the upper surface 71a of the first retaining portion 71, As shown in Fig. The main surface 71b of the first engaging and securing portion 71 is formed so as to be flush with the surface of the lower end portion of the tube end portion 53 below the first engaging and securing portion 71 in the main direction (The side closer to the first engaging and fixing part 71) and in the direction toward the main surface 53b of the tapered end part 53. As shown in Fig. The lower surface 71c of the first fastening and fixing unit 71 is positioned between the upper surface 51c of the header collecting tube main body 50 and the lower surface 71c (A distance equal to the width in the vertical direction of the baffle insertion opening 56) is secured.

The second engaging and fixing unit 72 is also formed in the same shape as the first engaging and fixing unit 71 and is provided so as to be the object of the axis with the first engaging and fixing unit 71. The second engaging and fixing unit 72 includes an upper surface 72a and a lower surface 72c which form the same surface as the upper end surface 53a of the pipe end portion 53 and a lower surface 72c facing downward, And has a kitchen surface 72b. The lower surface 72c of the second fastening and fixing unit 72 is positioned above the upper end surface 51c of the header collecting tube main body 50 and below the upper surface 72a of the second fastening and fixing unit 72. The main surface 72b of the second engaging and fixing unit 72 is formed so that the main surface thereof faces upward from the upper surface 51c of the header collecting tube main body 50 to the upper surface 72a of the second engaging and securing portion 72, In the vertical direction. The main surface 72b of the second engaging and securing portion 72 is formed so as to be flush with the surface of the tube end portion 53 facing the main direction of the lower portion of the second engaging and securing portion 72 (The side closer to the second stopper fixing portion 72) than the main surface 53c and the main surface 53c of the tapered portion 53 toward the main surface 53c. In this way, the lower surface 72c of the second engagement and retention part 72 is formed between the upper surface 51c of the header collecting tube main body 50 and the upper surface 51c of the second group of engagement parts 72b slightly larger than the width of the baffle 60 (A distance equal to the width in the vertical direction of the baffle insertion opening 56) is secured.

(4-3-2) Baffle

Fig. 12 is an external perspective view of the baffle 60. Fig. Fig. 13 shows a schematic view seen from the plane of the baffle 60. Fig. Fig. 14 is a schematic view seen from the side of the baffle 60 when viewed from the left side in Fig.

The baffle 60 is used as a partition plate and as a lid member. In the present embodiment, the baffle 60 as a partition plate and the baffle 60 as a lid member are all made in the same shape, size, and material, and are manufactured as the same parts. Since the shapes and the like are made common in this manner, the manufacturing cost can be lowered as the number of parts is reduced.

The baffle 60 has a baffle main body 61, a convex portion 63, a first engaged portion 64 and a second engaged portion 65. The baffle 60 may be used to divide the flow path by being inserted into the baffle leading end opening 54 of the header gathering tube main body 50 with the side on which the convex portion 63 is provided as the inserting side, It is also possible to use it as a member for blocking the end portion of the guide member 50.

The baffle main body 61 is preferably a substantially plate-shaped substantially circular member made of aluminum or an aluminum alloy and is preferably made of the same material as that of the header gathering tube main body 50 in order to maintain a good solder state. The baffle main body 61 has a semicircular portion that is approximately the same as the outer shape of the header gathering tube main body 50 and a semicircular portion that is approximately the same as the inner diameter of the header gathering tube main body 50. The semicircular part having the same degree as the outer diameter of the header collecting tube main body 50 is attached to the header collecting tube main body 50 and is inserted into the semicircular insertion direction outer peripheral surface 61a located at the outer circumferential surface 51a of the header collecting tube main body 50 ). The semicircular part having the same inner diameter as the inner diameter of the header gathering tube main body 50 is attached to the header gathering tube main body 50 and is inserted into the first insertion direction outer peripheral surface 61b and a second insertion direction outer peripheral surface 61c. The baffle main body 61 also has a first circular surface 61d and a second circular surface 61e which is opposite to the first surface 61d and has a substantially circular shape.

The convex portion 63 has a shape protruding in the radial direction between the first insertion direction outer peripheral surface 61b of the baffle main body 61 and the second insertion direction outer peripheral surface 61c of the baffle main body 61 have. The convex portion 63 has a distal end face 63a facing the protruding direction at the distal end. The first surface 61d of the baffle main body 61 is enlarged above the convex portion 63 and the second surface 61e of the baffle main body 61 is provided below the convex portion 63. [ It has a coplanar part. The width of the convex portion 63 in the main direction is approximately the same as the thickness of the plate of the baffle main body 61. The convex portion 63 includes a front end face 63a constituting the outside of the baffle 60 and a first convex portion side face 63b and a second convex portion side face 63b constituting the side surface in the main direction of the convex portion 63, (63c). The first convex portion side surface 63b is connected to the first insertion direction outer circumferential surface 61b. The second convex portion side surface 63c is connected to the second insertion direction outer circumferential surface 61c. The front end face 63a of the convex portion 63 is located at a boundary portion between the first convex portion side face 63b and the second convex portion side face 63c, The boundary portion with the second surface 61e of the baffle main body 61 and the boundary portion with the second surface 61e of the baffle main body 61 are formed to have a rounded shape. As described above, since the convex portion 63 is formed into a rounded shape, the insertion of the header gathering tube main body 50 into the baffle leading end opening 54 is unlikely to occur, and natural insertion can be performed.

The first engaged portion 64 is a radially outer end of the semicircular portion of the baffle main body 61 that is approximately the same as the outer shape of the header gathering tube main body 50 and has an inner diameter equal to the inner diameter of the header gathering tube main body 50 And the second to-be-latched portion 65 is provided on the other side of the boundary portion. The first engaged portion 64 is engaged with the second surface 61e of the baffle 60 as the surface on the second surface 61e side of the baffle 60 faces the insertion direction from the insertion direction And has a first downwardly engaged surface 64a formed so as to be bent upward. The first engaged portion 64 is engaged by the second face 61e of the baffle 60 as the face on the first face 61d side of the baffle 60 faces the insertion direction from the insertion direction, And the first upwardly engaged surface 64c is formed so as to be bent upward. The first to-be-engaged and fixed portion 64 connects the first downwardly-to-be-engaged surface 64a and the first upwardly-to-be-engaged surface 64c in the plate thickness direction, 64b.

The second latched securing portion 65 is the same as the first latched securing portion 64 and has the shape of a shaft object and the first latched securing portion 64. [ That is, the second engaged portion 65 is provided on the second face 61e side of the baffle 60 as the face on the second face 61e side of the baffle 60 faces from the insertion direction toward the semi-insertion direction, And a second downwardly-to-be-engaged surface 65a formed to be bent upward. The second latched and fixed portion 65 is provided so that the surface on the first surface 61d side of the baffle 60 is bent toward the second surface 61e side as it goes from the insertion direction toward the semi-insertion direction And a second upwardly projecting securing surface 65c formed thereon. The second latched securing portion 65 connects the second lower downwardly engaged face 65a and the second upper upwardly engaged face 65c in the plate thickness direction, 65b.

(4-4) Fitting closure by the baffle in the vicinity of the end of the header collecting tube main body

Fig. 15 is a schematic view showing a state in which the baffle 60 is inserted until just before plastic deformation. 16 is a schematic view showing a state in which insertion is completed in a state where the baffle 60 is plastic-deformed. 17 is an external perspective view showing a state of an insertion target in a state in which the baffle 60 as a partition plate is inserted and fixed in the header collecting tube main body 50. As shown in Fig. 18 is an external perspective view showing a state opposite to the insertion destination in a state in which the baffle 60 as the partitioning plate is inserted and fixed in the header collecting tube main body 50. As shown in Fig. 17 and 18, hatching is performed on the baffle 60 to distinguish it from the header collection tube main body 50 for ease of understanding.

The baffle 60 as the partition plate is inserted through the baffle insertion opening 56 of the header collecting tube main body 50 so that the convex portion 63 is in the insertion direction leading end and the baffle 60 as the first downwardly pierced engagement surface 64a (See the baffle 60 of Fig. 15 and the contact portion P of the header gathering tube main body 50) until the state of plastic deformation at the second downwardly-to-be-engaged surface 65a is reached . The baffle 60 as a partition plate is further inserted so that the first downwardly-to-be-engaged surface 64a and the second downwardly-to-be-engaged surface 65a are engaged with the first surface 61d of the baffle 60, (See the baffle 60 of Fig. 16 and the contact portion P 'of the header collecting tube main body 50) toward the inside of the baffle insertion opening 56 while being elastically deformed toward the direction of the baffle insertion opening 56 The first insertion direction outer circumferential surface 61b and the second insertion direction outer circumferential surface 61c of the convex portion 63 are in surface contact with the inner circumferential surface 51b in the radially inner side of the header gathering tube main body 50 in the radial direction The thickness contact surface 56b is formed with respect to the first inserting direction surface 64b of the first engaged securing portion 64 of the baffle 60 and the second inserting direction surface 65b of the second engaged securing portion 65, (Refer to the contact portion Q in Fig. 16), the insertion is completed, and a temporarily fixed state is obtained.

When the baffle 60 as the partition plate is inserted into the baffle insertion opening 56 of the header collecting tube main body 50, the first engaged portion 64 and the second engaged portion (not shown) of the baffle 60 65 are fitted in the vertical direction by the upper and lower surfaces of the baffle insertion opening 56 when they reach the outer peripheral portion of the baffle insertion opening 56, (The upper surface of the baffle insertion opening 56 of the baffle 60), and / or the baffle insertion opening 56 of the header gathering tube main body 50 The lower surface 56d and the lower surface 56e become plastic deformed while leaving residual stress by applying a force. The baffle 60 is stably fixed and the baffle 60 is pushed into the baffle insertion opening 56 so that the first insertion direction outer circumferential surface 61b of the convex portion 63 and the second insertion direction outer surface 61b of the convex portion 63 The second insertion direction outer circumferential surface 61c comes into surface contact with the inner circumferential surface 51b on the radially inner side of the header collecting tube main body 50 in the radial direction, The first insertion direction surface 64b is in surface contact with the thickness contact surface 56b of the header collection tube main body 50. [ The convex portion 63 of the baffle 60 is inserted into the cylindrical inner surface 54b of the baffle leading end opening 54 of the header collecting tube main body 50 by inserting the baffle 60 into such a surface contact state And is located at a position covered by the vertical direction and the main direction. The first convex portion side surface 63b, the second convex portion side surface 63c, the first surface 61d, the second surface 61e, and the boundary portion 63b of the convex portion 63 of the baffle 60, Is brought into contact with the surface of the cylindrical inner surface 54b of the opening 54 for baffle leading end of the header collecting tube main body 50 and the baffle 60 is brought into contact with the side surface And is held by the header collecting tube main body 50. Therefore, compared with the structure (swing structure) supported only at either of the semi-insertion side end and the insertion-side end, fall-off is less likely to occur and can be stably maintained. The distal end face 63a of the convex portion 63 is located on substantially the same plane as the outer circumferential face 51a on the radially outer side of the header collecting tube main body 50. [ The distal end face 63a of the convex portion 63 may be formed in a dimension such that it is positioned radially outwardly of the outer peripheral surface 51a of the header collection tube main body 50 in the radially outer side, Of the inner side of the main body 50 of the header collecting tube. The brazing material 51 provided on the outer circumferential surface of the header collecting tube main body 50 is positioned at the joining portion between the baffle opening 54 and the convex portion 63 in the radially outward dimension It is easy to push.

The vicinity of the outer circumferential surface on the opposite side of the insertion direction of the baffle 60 is formed by the thickness upper surface 56d and the thickness lower surface 56e of the baffle insertion opening 56 of the header collecting tube main body 50, State. The outer circumferential surface 61a of the baffle 60 in the semi-insertion direction is located on the approximately same plane in the radial direction with the outer circumferential surface 51a of the header collection tube main body 50. [

As described above, the header collection tube main body 50 in which the baffle 60 is temporarily fixed is soldered in the furnace by being put into a furnace.

Here, it is possible to prevent the baffle 60 from being detached from the temporarily fixed state even when there is an impact during transportation until the header collection tube main body 50 in which the baffle 60 is temporarily stopped is moved to the furnace It becomes. This temporary fixing state can be achieved only by providing the first engaged portion 64 and the second engaged portion 65 on the baffle 60 and the accuracy of the shape and size of the baffle 60, It is not required to exactly conform to the shape of the baffle insertion opening 56, so that the manufacturing cost can be reduced.

As described above, the convex portion 63 of the baffle 60 has the baffle opening 54 and the convex portion 63, which are provided on the outer peripheral surface of the header collecting tube main body 50, As shown in FIG. The direction of the bundling is determined so that the soldering material (for example, the solder paste) is applied from various directions including the upward, downward, and main directions with respect to the tip end face 63a of the convex portion 63 in the outer peripheral surface 51a of the header collecting tube main body 50 51). This makes it possible to shorten the path length for drawing the brazing material 51 to the vicinity of the distal end of the baffle 60 in comparison with the embodiment in which the convex portion 63 and the baffle opening 54 are not provided Therefore, a sufficient amount of the brazing material 51 can be attracted to the joining portion near the tip in the insertion direction, and the brazing strength can be increased. In the embodiment in which the convex portion 63 and the baffle opening 54 are not formed, the baffle 60 in the vicinity of the tip end in the insertion direction of the baffle 60, which is difficult to visually recognize from the outer periphery of the header collecting tube main body 50 (Whether or not a fillet made of the brazing material 51 is formed in the vicinity of the joint portion by pulling the fillet 51 sufficiently) can be easily recognized from the outer periphery of the header collecting tube main body 50. The brazing material 51 in the peripheral portion of the header gathering tube main body 50 can also easily be pulled in with respect to the joining portion of the outer peripheral surface 51a of the header gathering tube main body 50 with the outer peripheral surface 61a of the baffle 60 in the semi- .

Also, when the baffle 60 is inserted into the baffle insertion opening 56 in a posture opposite to the above-described posture, the baffle 60 can also be temporarily fixed.

(4-5) Fitting by the baffle as the lid member in the vicinity of the end portion of the header gathering tube main body

19 is an external perspective view showing a state in which the vicinity of an end of the header collecting tube main body 50 is closed with a baffle 60 as a lid member. Fig. 20 is a cross-sectional view taken from the side of the same state. 19 and 20, hatching is applied to the baffle 60 for ease of understanding and is shown separately from the header collection tube main body 50. [

The baffle 60 as a lid member is provided between the upper end surface 51c of the header collecting tube main body 50 and the lower surfaces 71c and 72c of the engaging and securing portion 70 such that the convex portion 63 is in the insertion direction leading end And is inserted in the horizontal direction, thereby becoming a temporarily fixed state.

When the baffle 60 as a lid member is inserted between the upper end surface 51c of the header collecting tube main body 50 and the lower surfaces 71c and 72c of the engaging and securing portion 70, The upper end surface 51c of the header collecting tube main body 50 and the lower surface 71c of the engaging and securing portion 70 are engaged with each other when the fixing portion 64 and the second engaged portion 65 reach the engaging portion 70, (The first engaged portion 64 of the baffle 60 and the second engaged portion 64b of the baffle 60) before being fully inserted into the baffle 60, 65 and / or the upper surface 51c of the header collecting tube main body 50 and the lower surfaces 71c, 72c of the retainer 70 become a plastic deformation state by leaving a residual stress ). The baffle 60 is stably fixed and the baffle 60 is pushed inwardly so that the first insertion direction outer peripheral surface 61b and the second insertion direction outer peripheral surface 61c of the baffle 60, The first insertion direction surface 64b of the first engaged portion 64 of the baffle 60 is brought into contact with the inner circumferential surface 51b of the radially inner side of the header collecting tube main body 50 in the radial direction, And is brought into surface contact with the main surface 53b of the tubular portion 53. The baffle 60 is inserted so that the convex portion 63 of the baffle 60 is positioned below the lower end portion 52a of the discharge groove 52 provided in the pipe end portion 53 . Here, the lower portion of the convex portion 63 of the baffle 60 may be supported by the upper surface of the lower end portion 52a of the discharge groove 52 of the tube end portion 53. In this case, Is held by the header collecting tube main body 50 at both of the semi-insertion side end and the insertion side leading end. In this case, as compared with the structure (swing structure) supported only on either of the semi-insertion side end and the insertion-side end, it is possible to make the state that the dropout is less likely to occur and stably maintained. The distal end face 63a of the convex portion 63 is located on substantially the same plane as the outer circumferential face 51a on the radially outer side of the header collecting tube main body 50. [ The distal end face 63a of the convex portion 63 may be formed in a dimension such that it is located radially outwardly of the outer circumferential face 51a of the header gathering tube main body 50 in the radial direction, And the thickness of the tube end portion 53 in the upper surface of the lower end portion 52a of the lower end portion 52a. The brazing material 51 provided on the outer circumferential surface of the header collecting tube main body 50 is drawn to the joint portion between the discharge groove 52 and the convex portion 63 It is easy to put.

The vicinity of the outer circumferential surface on the opposite side of the insertion direction of the baffle 60 is supported by the upper end surface 51c of the header collecting tube main body 50 from below. The outer circumferential surface 61a of the baffle 60 in the semi-insertion direction is located on the approximately same plane in the radial direction with the outer circumferential surface 51a of the header collection tube main body 50. [

As described above, the header collection tube main body 50, in which the baffle 60 as the lid member is temporarily fixed, is soldered in the furnace by putting it in the furnace. Specifically, after the baffle 60 as a partition plate and the baffle 60 as a lid member are temporarily fixed, they are placed in a furnace.

Also, with respect to the baffle 60, it is possible to prevent the baffle 60 from being detached from the temporarily fixed state even if there is an impact or the like during transportation until the baffle 60 is moved to the furnace after temporary fixing. This temporary fixing state can be achieved only by providing the first engaged and retreated portion 64 and the second engaged portion 65 in the baffle 60. The shape and the dimensional accuracy of the baffle 60 can be adjusted It is not required to exactly conform to the shape between the upper end surface 51c of the collecting tube main body 50 and the lower surfaces 71c and 72c of the engaging portion 70 and therefore the manufacturing cost can be reduced.

The convex portion 63 of the baffle 60 is formed on the outer peripheral surface of the header collection tube main body 50 with respect to the portion where the baffle 60 as the lid member is brazed and fixed to the header collection tube main body 50. [ It is possible to attract the brazing material 51 to the joint portion between the discharge groove 52 and the convex portion 63. [ The soldering in the vicinity of the convex portion 63 of the baffle 60 is performed by a soldering material (not shown) provided on the lower portion of the distal end face 63a of the convex portion 63 in the outer peripheral surface 51a of the header collecting tube main body 50 51, it is possible to attract not only the adjacent positions in the main direction of the tubular portion 53, but also the brazing material 51 provided above the barrel portion 53, thereby sufficiently securing the brazing strength, thereby enhancing the reliability. Here, the brazing material 51 on the outer circumferential surface 51a of the header gathering tube main body 50 is liquefied in the furnace so as to pass the gap between the header gathering tube main body 50 and the baffle 60 by surface tension, The fillet F formed at the position along the inner circumferential surface 51b of the header collecting tube main body 50 on the upper surface of the main body 60 can easily be visually recognized from above and the lead material 51 can be easily pulled sufficiently And reliability can be improved.

Since the retaining portion 70 of the tube portion 53 is integrally formed with the header collecting tube main body 50, it is possible to suppress the movement of the baffle 60 as a lid member to move out. It is also possible to prevent the baffle 60 from bouncing even if the baffle 60 serving as the lid member is displaced from the header gathering tube main body 50 due to the poor soldering.

(5) Characteristics of the outdoor heat exchanger (20) of the air conditioner (1)

The outdoor heat exchanger 20 of the present embodiment has the tubular portion 53 at least partially on the upper surface of the baffle 60 in a state where the baffle 60 as the lid member is attached to the header collecting tube main body 50 . Therefore, the joining portion of the baffle 60 and the header collecting tube main body 50 is not limited to the lower surface of the baffle as in the conventional example, and it is possible to have the joining portion even on the upper surface side. As a result, it is possible to increase the bonding strength between the header gathering tube main body 50 and the baffle 60 as a lid member.

The tube end portion 53 of the header collecting tube main body 50 is formed so that the entire upper surface in the radially outer side of the baffle 60 as the lid member does not cover the rim, 51b and the outer circumferential surface 51a in the radial direction. Therefore, even if there is condensation water or rainwater on the upper surface side of the baffle 60 as the lid member inside the pipe end portion 53, it is possible to quickly discharge it. Therefore, it is possible to suppress the corrosion of the metal header assembly tube main body 50 and the baffle 60 as the lid member. In addition, icing due to freezing of the water can be suppressed.

Particularly, in the case where the outdoor heat exchanger 20 employing the above-mentioned drainage groove 52 functions as an evaporator of a refrigerant in a refrigeration cycle, condensation water is likely to occur. Even in this case, It becomes possible to drain water.

(6) Modification

Although the embodiment of the present invention has been described in the above embodiment, the present invention is not limited to the above embodiment, but is not limited to the above embodiment. The present invention naturally includes aspects that have been appropriately changed within the scope not departing from the gist of the present invention.

(6-1) Variation Example A

In the header collecting pipe main body 50 of the outdoor heat exchanger 20 of the embodiment, the engaging and fixing part 70 is formed by dividing the divided portions of the first engaging and fixing part 71 and the second engaging and fixing part 72 into I explained the example I have.

However, the present invention is not limited to this. For example, like the header collection tube main body 250 provided with the retainer 270 shown in Fig. 21, the first retainer 71 and the second retainer The second fastening and fixing unit 72 may be connected in the main direction. The retaining portion 270 may be provided with a drain port 72x penetrating in the radial direction so as to connect the inner circumferential surface 51b and the outer circumferential surface 51a.

Instead of the drain hole 52 of the above-described embodiment, only the drain hole 72x may be formed.

Even in these cases, it is possible to secure the water drainability in the space above the baffle 60 as the lid member and in the space inside the tube end portion 53.

(6-2) Variation B

The upper end surface 51c of the lower end portion 52a of the drainage groove 52 and the portion other than the tapered end portion 53 of the header collecting tube main body 50 are located in the longitudinal direction of the header gathering tube main body 50 And the case of the same height position is described as an example.

However, the present invention is not limited to this. For example, as shown in Fig. 22, a baffle 360 as a lid member having no shape corresponding to the convex portion 63 of the above-described embodiment, The drainage structure may be constructed by using the header gathering tube main body 350 having the tube end portion 353 having the drainage groove 352 that is partially over the radially outer end of the baffle 360 as a member. Even in this case, sufficient drainage can be ensured.

1: air conditioner (refrigerator) 2: outdoor air conditioner
3: air conditioning indoor unit 10: unit casing
20: outdoor heat exchanger (heat exchanger) 21: heat exchanger
21a: Heat transfer pin (pin) 21b: Flat multi-hole pipe (flat pipe)
22, 23: header collection pipe 31: gas refrigerant piping
32: liquid refrigerant piping 40: expansion valve
50: Header collecting tube main body 52: Drain groove (drainage section, groove)
52a: lower end portion 53:
60: Baffle (lid member)

Claims (6)

A plurality of flat tubes 21b,
Header collection tubes 22 and 23 connected to the respective flat tubes,
And a plurality of fins (21a) joined to the flat tube,
A heat exchanger (20) for exchanging heat with a fluid flowing inside the flat tube and air flowing outside the flat tube,
The header collection tubes 22,
A header collecting tube main body 50 provided so that its lengthwise direction is a vertical direction,
And a lid member (60) provided on the inner side of the upper end of the header collecting tube main body (50) and covering the upper side of the header collecting tube main body (50)
The header collecting tube main body 50 has a tube end portion 53 extending upward from the lid member 60,
A drainage portion is formed in a part of the pipe end portion 53,
Wherein the drainage portion is a groove (52) in which a part of the tube end portion (53) is recessed downwardly. The method according to claim 1,
Wherein the lower end (52a) of the groove (52) is located below the upper end of the lid member (60). A plurality of flat tubes 21b,
Header collection tubes 22 and 23 connected to the respective flat tubes,
And a plurality of fins (21a) joined to the flat tube,
A heat exchanger (20) for exchanging heat with a fluid flowing inside the flat tube and air flowing outside the flat tube,
The header collection tubes 22,
A header collecting tube main body 50 provided so that its lengthwise direction is a vertical direction,
And a lid member (60) provided on the inner side of the upper end of the header collecting tube main body (50) and covering the upper side of the header collecting tube main body (50)
The header collecting tube main body 50 has a tube end portion 53 extending upward from the lid member 60,
A drainage portion is formed in a part of the pipe end portion 53,
Wherein a portion of the radially outer end of the lid member (60) of the pipe end portion (53) is missing above the drainage portion. The method according to any one of claims 1 to 3,
Wherein at least a part of the outer circumferential portion of the lid member is held between a portion of the header collecting tube other than the tube portion (53) and the tube portion from above and below. A first heat exchanger, an expansion valve, and a second heat exchanger which is a heat exchanger according to any one of claims 1 to 3, are connected to each other, and at least the second heat exchanger functions as an evaporator of the refrigerant A refrigerating device (1) having a refrigerant circuit that can be operated by a user. A refrigerant circuit which is constituted by connecting a compressor, a first heat exchanger, an expansion valve, and a second heat exchanger which is a heat exchanger according to claim 4 to each other and which can function as the evaporator of at least the refrigerant Freezer (1).

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