WO2019053776A1 - Heat exchanger, outdoor unit, and air conditioner - Google Patents

Abstract

A heat exchanger according to the present invention is configured such that a cover covers a portion of a header collector pipe, and covers an interval between the header collector pipe and fins.

Description

Heat exchanger, outdoor unit, and air conditioner

The present invention relates to a heat exchanger provided with a header collecting pipe, an outdoor unit provided with the heat exchanger, and an air conditioner provided with the outdoor unit.

A parallel flow condenser is known as one of the heat exchangers. The parallel flow condenser is disposed between each of a pair of header collecting pipes disposed at the refrigerant inlet and the refrigerant outlet, a plurality of heat transfer pipes disposed between the pair of header collecting pipes, and a plurality of heat transfer pipes. A plurality of heat dissipating corrugated fins. In the parallel flow condenser, an exposed portion in which the surface of the heat transfer tube is exposed is present between the header collecting pipe and the end of the fin closest to the header collecting pipe in manufacture. The parallel flow condenser is referred to as a PFC heat exchanger in the following description.

For example, in the outdoor unit described in Patent Document 1, as a PFC heat exchanger, one in which a header manifold, a heat transfer pipe, and a heat dissipation corrugated fin are formed of aluminum or an aluminum alloy is proposed. And in patent document 1, while covering the space through which the air which is not used for heat exchange flows by covering an exposure part with a contact prevention member, the foreign material which is at least one of metal powder and moisture adheres to a header manifold. It suppresses the electrolytic corrosion that occurs.

JP, 2013-137121, A

However, in the outdoor unit described in Patent Document 1, the contact prevention member is formed with a hole surrounding the periphery of the heat transfer pipe. Therefore, foreign matter intrudes from this hole. When foreign matter intrudes from the hole, the foreign matter comes in contact with the joint portion between the header collecting pipe and the heat transfer pipe. When foreign matter contacts the junction between the header collecting pipe and the heat transfer pipe, electrolytic corrosion occurs at the junction. Therefore, the outdoor unit described in Patent Document 1 is not sufficient as a countermeasure against the entry of foreign matter.
Further, in the outdoor unit described in Patent Document 1, a fastening member such as a screw is required separately for fixing the contact prevention member, and it is considered that there is room for improvement in the assemblability.

The present invention has been made to solve the problems as described above, and it is possible to suppress the blockage of the space through which air not subjected to heat exchange flows and the intrusion of foreign matter without adopting a complicated structure. It is an object of the present invention to provide a heat exchanger, an outdoor unit provided with the heat exchanger, and an air conditioner provided with the outdoor unit.

A heat exchanger according to the present invention comprises a pair of header collecting pipes, a plurality of heat transfer pipes connected in parallel to each of the pair of header collecting pipes, and a plurality of fins installed between the plurality of heat transfer pipes. And a cover attached to at least one of the pair of header manifolds, wherein the cover covers a part of the header manifold, and the space between the header manifold and the fins. .

According to the heat exchanger of the present invention, since the exposed portion can be covered by the cover, it is possible to suppress the blockage of the space through which the air not subjected to the heat exchange flows and the intrusion of foreign matter without adopting a complicated structure. realizable.

It is a schematic block diagram which shows an example of the refrigerant circuit structure of the air conditioner concerning Embodiment 1 of this invention. It is a perspective view which shows roughly an example of the external appearance structure of the outdoor unit which concerns on Embodiment 1 of this invention. It is a perspective view which shows roughly an example of an internal structure of the outdoor unit which concerns on Embodiment 1 of this invention. It is a side view which shows roughly the structure of the edge part of the heat exchanger which concerns on Embodiment 1 of this invention. It is the schematic which shows schematically the structure of the heat exchanger which concerns on Embodiment 1 of this invention. It is a perspective view which shows roughly the state which attached the cover to the header manifold of the heat exchanger which concerns on Embodiment 1 of this invention. It is a top view of the 1st member which constitutes a cover. It is a front view of the 1st member which constitutes a cover. It is a side view of the 1st member which constitutes a cover. It is a rear view of the 1st member which constitutes a cover. It is a top view of the 2nd member which constitutes a cover. It is a front view of the 2nd member which constitutes a cover. It is a side view of the 2nd member which constitutes a cover. It is a rear view of the 2nd member which constitutes a cover. It is a perspective view which shows a part of 1st member which comprises a cover. It is a perspective view which shows a part of 2nd member which comprises a cover. It is a top view which shows roughly the state before attaching a cover to a header manifold. It is a perspective view showing roughly the state before attaching a cover to a header manifold. It is a top view which shows roughly the state which attached the cover to the header manifold. It is a perspective view which shows the state which attached the cover to the header manifold. It is a perspective view which shows roughly the correspondence of the 1st member and 2nd member of a cover. It is sectional drawing which shows roughly the procedure of the fixing method of the 1st member of a cover, and a 2nd member. It is sectional drawing which shows roughly the procedure of the fixing method of the 1st member of a cover, and a 2nd member. It is sectional drawing which shows roughly the procedure of the fixing method of the 1st member of a cover, and a 2nd member. It is sectional drawing which shows roughly the dimensional relationship of the 1st member of a cover, and a 2nd member. It is a side view which shows roughly one of the modifications of a cover. It is a perspective view which shows roughly one of the modifications of a cover. It is a perspective view which shows roughly the heat exchanger provided with the cover shown in FIG. It is a front which roughly shows an example of the cover of the heat exchanger which concerns on Embodiment 2 of this invention. It is a perspective view which shows roughly another example of the cover of the heat exchanger which concerns on Embodiment 2 of this invention.

Hereinafter, an embodiment of the present invention will be described based on the drawings. In addition, in the following drawings including FIG. 1, the relationship of the magnitude | size of each structural member may differ from an actual thing. In addition, in the following drawings including FIG. 1, those given the same reference numerals are the same or correspond to this, and this is common to the whole text of the specification. Furthermore, the form of the component represented in the specification full text is an illustration to the last, and is not limited to these descriptions.

Embodiment 1
FIG. 1 is a schematic configuration view showing an example of a refrigerant circuit configuration of the air conditioner 100 according to Embodiment 1 of the present invention. In FIG. 1, the flow of the refrigerant during the cooling operation is indicated by a solid arrow, and the flow of the refrigerant during the heating operation is indicated by a broken arrow.

<Configuration of Air Conditioner 100>
As shown in FIG. 1, the air conditioner 100 includes an outdoor unit 100A and an indoor unit 100B.

The indoor unit 100B is used as a load side unit or a use side unit, and includes a load side heat exchanger 53 and a blower fan 53A.
The outdoor unit 100A is used as a heat source side unit, and includes a heat exchanger 10, a blower 30, a compressor 51, a four-way switching valve 52, and an expansion valve 54.
And indoor unit 100B and outdoor unit 100A are mutually connected by refrigerant piping 58 including gas side connection piping 56 and liquid side communication piping 57, and refrigerant circuit 55 is constituted by this.

In the air conditioner 100, by switching the path of the four-way switching valve 52, it is possible to switch between the cooling operation and the heating operation. In the case of the path of the four-way switching valve 52 shown by a solid line in FIG. 1, the air conditioner 100 performs a cooling operation. On the other hand, in the case of the path of the four-way switching valve 52 shown by the broken line in FIG. 1, the air conditioner 100 performs the heating operation.

(Outdoor unit 100A)
The outdoor unit 100A is installed in a space separate from the air conditioning target space, and has a function of supplying cold or heat to the indoor unit 100B. Spaces other than the space to be air-conditioned include outdoor spaces such as ceilings or parking lots, underground spaces such as warehouses, or shared spaces such as next to elevators or steps below.

The heat exchanger 10 functions as an evaporator during heating operation and functions as a condenser during cooling operation. The heat exchanger 10 is a PFC heat exchanger.
The heat exchanger 10 will be described in detail later.
The blower 30 supplies air, which is a heat exchange fluid, to the heat exchanger 10. The blower 30 can be configured by a propeller fan having a plurality of wings.

The compressor 51 compresses and discharges the refrigerant. The compressor 51 can be configured by a rotary compressor, a scroll compressor, or the like. When the heat exchanger 10 functions as a condenser, the refrigerant discharged from the compressor 51 is sent to the heat exchanger 10 through the refrigerant pipe 58. When the heat exchanger 10 functions as an evaporator, the refrigerant discharged from the compressor 51 is sent to the heat exchanger 10 after passing through the refrigerant pipe 58 and via the indoor unit 100B.

The four-way switching valve 52 is provided on the discharge side of the compressor 51, and switches the flow of the refrigerant in the heating operation and the cooling operation.
In the case where the refrigerant is circulated in one direction, the four-way switching valve 52 is not an essential component. Also, as a substitute for the four-way switching valve 52, a combination of a two-way valve or a three-way valve may be used.

The expansion valve 54 expands and reduces the pressure of the refrigerant that has passed through the load-side heat exchanger 53 or the heat exchanger 10. The expansion valve 54 may be an electric expansion valve or the like capable of adjusting the flow rate of the refrigerant.
The expansion valve 54 may be disposed not in the outdoor unit 100A but in the indoor unit 100B.

The outdoor unit 100 </ b> A also includes a control unit 20. The control unit 20 centrally controls the overall operation of the air conditioner 100. Specifically, the control unit 20 is communicably connected to an external terminal such as a remote control, and controls the operation of each unit of the air conditioner 100 according to the content of the user operation received by the external terminal.

(Indoor unit 100B)
The indoor unit 100B is installed in a space capable of supplying cold energy or heat to the air conditioning target space, and has a function of cooling or heating the air conditioning target space by cold energy or heat supplied from the outdoor unit 100A. Spaces capable of supplying cold or heat to the air-conditioned space include air-conditioned spaces such as indoors, or other spaces connected to the air-conditioned space via a duct or the like.

The load-side heat exchanger 53 functions as a condenser during heating operation and functions as an evaporator during cooling operation. The load side heat exchanger 53 can be configured of a fin and tube type heat exchanger.
The blower fan 53A supplies air, which is a heat exchange fluid, to the load-side heat exchanger 53. The blower fan 53A can be configured by a propeller fan having a plurality of wings or a cross flow fan.

The refrigerant circuit 55 included in the air conditioner 100 includes the compressor 51, the load-side heat exchanger 53, the expansion valve 54, and the heat exchanger 10, which are element devices mounted in each unit, by the refrigerant pipe 58. It is connected and formed.

<Operation of air conditioner 100>
Next, the operation of the air conditioner 100 will be described along with the flow of the refrigerant. Here, the operation of the air conditioner 100 will be described by taking, as an example, the case where the heat exchange fluid exchanging heat with the refrigerant in the load side heat exchanger 53 and the heat exchanger 10 is air.

First, the cooling operation performed by the air conditioner 100 will be described.
By driving the compressor 51, the refrigerant in the gas state of high temperature and high pressure is discharged from the compressor 51. Hereinafter, the refrigerant flows according to the solid arrow. The high temperature / high pressure gas refrigerant (single phase) discharged from the compressor 51 flows into the heat exchanger 10 functioning as a condenser via the four-way switching valve 52. In the heat exchanger 10, heat exchange is performed between the inflowing high temperature / high pressure gas refrigerant and the air supplied by the blower 30, and the high temperature / high pressure gas refrigerant is condensed to be a high pressure liquid refrigerant (single phase )become.

The high pressure liquid refrigerant delivered from the heat exchanger 10 is converted by the expansion valve 54 into a two-phase refrigerant of low pressure gas refrigerant and liquid refrigerant. The refrigerant in the two-phase state flows into the load side heat exchanger 53 that functions as an evaporator. In the load-side heat exchanger 53, heat exchange is performed between the inflowing two-phase refrigerant and the air supplied by the blower fan 53A, and the liquid refrigerant in the two-phase refrigerant is evaporated to a low pressure. Gas refrigerant (single phase). The room is cooled by this heat exchange. The low-pressure gas refrigerant sent from the load-side heat exchanger 53 flows into the compressor 51 via the four-way switching valve 52, is compressed and becomes a high-temperature and high-pressure gas refrigerant, and is discharged again from the compressor 51. Hereinafter, this cycle is repeated.

Next, the heating operation performed by the air conditioner 100 will be described.
By driving the compressor 51, the refrigerant in the gas state of high temperature and high pressure is discharged from the compressor 51. Hereinafter, the refrigerant flows according to the broken arrow. The high temperature / high pressure gas refrigerant (single phase) discharged from the compressor 51 flows through the four-way switching valve 52 into the load side heat exchanger 53 functioning as a condenser. In the load-side heat exchanger 53, heat exchange is performed between the high temperature and high pressure gas refrigerant flowing in and the air supplied by the blower fan 53A, and the high temperature and high pressure gas refrigerant condenses and the high pressure liquid refrigerant It will be (single phase). This heat exchange heats the room.

The high-pressure liquid refrigerant sent from the load-side heat exchanger 53 is converted by the expansion valve 54 into a two-phase refrigerant of low-pressure gas refrigerant and liquid refrigerant. The two-phase refrigerant flows into the heat exchanger 10 that functions as an evaporator. In the heat exchanger 10, heat exchange is performed between the inflowing two-phase refrigerant and the air supplied by the blower 30, so that the liquid refrigerant is evaporated among the two-phase refrigerant and the low-pressure gas refrigerant It will be (single phase). The low-pressure gas refrigerant sent from the heat exchanger 10 flows into the compressor 51 via the four-way switching valve 52, is compressed and becomes a high-temperature and high-pressure gas refrigerant, and is discharged again from the compressor 51. Hereinafter, this cycle is repeated.

<Details of Outdoor Unit According to Embodiment 1 of the Present Invention>
Next, the outdoor unit 100A according to the first embodiment of the present invention will be described in detail. FIG. 2 is a perspective view schematically showing an example of the appearance of the outdoor unit 100A. FIG. 3 is a perspective view schematically showing an example of the internal configuration of the outdoor unit 100A. The outdoor unit 100A will be specifically described based on FIGS. 2 and 3. 2 and 3, the side where the blower 30 is disposed is the front, the opposite side is the back, the right side in the drawing is the right side, and the left side in the drawing is the left side. Further, FIG. 3 shows a state in which the right side panel 70a, the back panel 70b, the left side panel 70c, the front panel 70d, and the top panel 70e constituting the housing 70 are removed.

(Configuration of outdoor unit 100A)
As shown in FIG. 2, the outdoor unit 100 </ b> A has a housing 70 that constitutes the outer shell of the outdoor unit 100 </ b> A. The housing 70 is formed in a box shape by the right side panel 70a, the back panel 70b, the left side panel 70c, the front panel 70d, the top panel 70e, and the bottom panel 70f, and the components are accommodated therein. It has become. Further, in the housing 70, a back side air inlet 71, a side air side inlet 72, and an air outlet 73 are formed. A guard 74 is attached to the blowout port 73.

The back side intake port 71 is formed in the back panel 70 b of the housing 70 so as to open. The side air inlet 72 is formed in the left side panel 70 c of the housing 70 so as to open. The blowout port 73 is formed to open at the front panel 70 d of the housing 70. By driving the blower 30 housed in the housing 70, air outside the housing 70 is sucked into the housing 70 from the back side air inlet 71 and the side air side inlet 72. Then, the air sucked into the inside of the housing 70 is blown out of the air outlet 73 to the outside of the housing 70.

As shown in FIG. 3, the heat exchanger 10, the blower 30, the compressor 51, the partition plate 75, and the control unit 20 are accommodated in the housing 70. The partition plate 75 divides the inside of the housing 70 into a fan room and a machine room. The heat exchanger 10 and the blower 30 are disposed in the blower chamber of the housing 70 partitioned by the partition plate 75. The compressor 51 and the control unit 20 are disposed in the machine room of the housing 70 partitioned by the partition plate 75.

The heat exchanger 10 is bent in a substantially L shape in a top view, and a pair of header collecting pipes 11 is installed at both ends. Further, a cover 60 is attached to each of the pair of header collecting pipes 11. A pair of header manifolds 11 installed at one end of the heat exchanger 10 is referred to as a first header manifold 11a, and one installed at the other end of the heat exchanger 10 with a second header manifold 11b It shall be called.

<Details of Heat Exchanger 10>
FIG. 4 is a side view schematically showing the configuration of the end portion of the heat exchanger 10 according to Embodiment 1 of the present invention. FIG. 5 is a schematic view schematically showing the configuration of the heat exchanger 10. As shown in FIG. The configuration of the heat exchanger 10 will be described in detail based on FIGS. 4 and 5. In addition, in FIG.4 and FIG.5, it has shown schematically in the structural example of the state seen from the flow direction of the air supplied to the heat exchanger 10. As shown in FIG.

As shown in FIGS. 4 and 5, the heat exchanger 10 includes a header collecting pipe 11, a plurality of heat transfer pipes 12 connected to the header collecting pipe 11, and a plurality of fins 13 provided in each of the heat transfer pipes 12. ,have. As described above, the header collecting pipe 11 is installed at both ends of the heat exchanger 10, that is, at both ends of the heat transfer pipe 12, and the heat transfer pipe 12 is connected to each of the pair of header collecting pipes 11. . The header collecting pipe 11, the heat transfer pipe 12, and the fins 13 are made of aluminum or an aluminum alloy.

The header collecting pipe 11 is configured to extend in the direction of standing up from the bottom panel 70f, that is, in the vertical direction. Connected to the header collecting pipe 11 is a refrigerant pipe 58 which allows the refrigerant flowing through the refrigerant circuit 55 to flow in or out. Note that the direction in which the header manifold 11 extends is referred to as the longitudinal direction.

When the refrigerant flows in from the first header collecting pipe 11a, the first header collecting pipe 11a distributes the refrigerant flowing in the first header collecting pipe 11a to the plurality of heat transfer pipes 12 connected to the first header collecting pipe 11a. Do. The distributed refrigerant is sent to the side of the second header collecting pipe 11 b disposed at the other end of the heat exchanger 10. The second header collecting pipe 11 b collects the refrigerant flowing through the plurality of heat transfer pipes 12.
When the refrigerant flows in from the second header collecting pipe 11b, the flow of the refrigerant is in the reverse direction, that is, in the direction from the second header collecting pipe 11b toward the first header collecting pipe 11a.

The plurality of heat transfer tubes 12 are arranged in parallel along the longitudinal direction of the header collecting tube 11. That is, the plurality of heat transfer tubes 12 are arranged in parallel in the vertical direction. One end of each heat transfer pipe 12 is connected to the first header collecting pipe 11a, the other end is connected to the second header collecting pipe 11b, and the refrigerant flows through the inside thereof.

Each heat transfer tube 12 has a flat shape in which the thickness, that is, the dimension in the row direction is smaller than the dimension in the width direction. That is, each heat transfer tube 12 is a flat tube whose horizontal width is larger than the vertical width. Each heat transfer tube 12 is substantially L-shaped in a top view, and the long side portion of the L-shape is located on the back side of the housing 70, and the L-shaped short side portion is located on the left side. The heat exchangers 10, that is, the heat transfer tubes 12 and the fins 13 that constitute the heat exchangers 10 may not be substantially L-shaped in top view, but may be straight in top view.

The plurality of fins 13 are provided in the plurality of heat transfer tubes 12 so as to be aligned along the longitudinal direction of the heat transfer tubes 12, that is, the flow direction of the refrigerant. Each fin 13 is formed in a thin plate shape. Outside air is supplied to the heat transfer tubes 12 and the fins 13 in the L-shaped long side portion through the back side air intake 71. Further, the outside air is supplied to the heat transfer pipes 12 and the fins 13 in the L-shaped short side portion through the side air inlets 72.

As shown in FIGS. 4 and 5, the exposed surface of the heat transfer tube 12 is exposed between the first header collecting pipe 11a and the end 13A of the fin 13 closest to the first header collecting pipe 11a. There is a part 12a. The exposed portion 12 a is a portion where the surface of the heat transfer tube 12 is exposed without the presence of the fins 13.
Similarly, an exposed portion in which the surface of the heat transfer tube 12 is exposed is provided between the second header collecting pipe 11b and the end of the fin 13 closest to the second header collecting pipe 11b.
In FIG. 4, a portion where the header collecting pipe 11 and each heat transfer pipe 12 are joined is illustrated as a joint portion 15.

Although the case where the heat exchanger 10 is a PFC heat exchanger is described as an example, the heat exchanger 10 may be any one provided with the header collecting pipe 11, and the heat exchanger 10 may be a PFC heat exchange. It is not limited to the As a heat exchanger provided with a header collecting pipe 11 other than the PFC heat exchanger, a finned-tube heat exchanger exists.
Further, although the case where the heat transfer tube 12 is a flat tube is described as an example, the heat transfer tube 12 is not limited to a flat tube, and the heat transfer tube 12 may be a circular tube.

<Overview of Cover 60>
FIG. 6 is a perspective view schematically showing a state in which the cover 60 is attached to the header collecting pipe 11 of the heat exchanger 10. A state where the cover 60 is attached to the header collecting pipe 11 of the heat exchanger 10 will be described based on FIG.

As shown in FIG. 6, the cover 60 is attached to the header manifold 11 so as to cover the exposed portion 12a.
The cover 60 includes a first member 61 and a second member 62, and is configured by combining the first member 61 and the second member 62. When the cover 60 is attached to the header manifold 11, the exposed portion 12a is covered by the cover 60. Therefore, the cover 60 prevents the foreign matter, which is at least one of the metal powder and the moisture, from adhering to the exposed portion 12a. Therefore, the foreign matter does not intrude into the joint portion 15 between the header collecting pipe 11 and each of the heat transfer pipes 12, and electrolytic corrosion of the joint portion 15 can be suppressed. In addition, the cover 60 can close a space where air not used for heat exchange flows.

<Details of Cover 60>
FIG. 7 is a plan view of the first member 61 constituting the cover 60. FIG. FIG. 8 is a front view of the first member 61 constituting the cover 60. As shown in FIG. FIG. 9 is a side view of the first member 61 constituting the cover 60. As shown in FIG. FIG. 10 is a rear view of the first member 61 constituting the cover 60. As shown in FIG. FIG. 11 is a plan view of the second member 62 constituting the cover 60. FIG. FIG. 12 is a front view of the second member 62 constituting the cover 60. FIG. FIG. 13 is a side view of the second member 62 constituting the cover 60. FIG. FIG. 14 is a rear view of the second member 62 constituting the cover 60. FIG. FIG. 15 is a perspective view showing a part of the first member 61 constituting the cover 60. As shown in FIG. FIG. 16 is a perspective view showing a part of the second member 62 constituting the cover 60. As shown in FIG. The configuration of the cover 60 will be described based on FIGS. 7 to 16. Note that FIG. 7 shows the first member 61 in an enlarged manner. Similarly, FIG. 11 shows the second member 62 in an enlarged manner.

As described above, the cover 60 includes the first member 61 that constitutes a part of the cover 60 and the second member 62 that constitutes a part of the cover 60. The first member 61 and the second member 62 are made of an insulating material. Examples of the insulating material include polypropylene, polyethylene, polystyrene, polyvinyl chloride, and synthetic resins such as acronitrile butadiene styrene resin.

Also, as described above, the header collecting pipe 11 is configured to extend long in the direction of standing up from the bottom panel 70f. Therefore, as shown in FIGS. 8 to 10, the first member 61 is configured to extend in the vertical direction in the drawing in correspondence with the header manifold 11. Similarly, as shown in FIGS. 12 to 14, the second member 62 is also configured to extend in the vertical direction in the drawing corresponding to the header manifold 11. The direction in which the first member 61 and the second member 62 extend is referred to as the longitudinal direction. Further, how to fix the first member 61 and the second member 62 will be described in detail later.

The first member 61 includes a first flat surface portion 611, a first curved surface portion 612, and a first connection portion 613.
The first flat surface portion 611 extends in a planar manner in the longitudinal direction, and is a portion to which the first curved surface portion 612 is connected at one end. The first flat portion 611 is attached to a part of the side surface of the heat exchanger 10 and covers the exposed portion 12 a. That is, the first flat surface portion 611 is configured as a flat shape capable of covering at least the exposed portion 12a.
The first flat portion 611 may cover at least the exposed portion 12 a, but may cover the end 13 </ b> A which is a part of the fin 13.

As shown in FIG. 7, the first curved surface portion 612 is curved in top view, the first flat surface portion 611 is connected to one end, and the first connection portion 613 is connected to the other end. It is a part. That is, the first curved surface portion 612 is located between the first flat surface portion 611 and the first connection portion 613 and connects them. Further, the first curved surface portion 612 is configured to have the same radius as the arc of the outer periphery of the header manifold 11, and is attached so as to cover a part of the outer periphery of the header manifold 11.

The first connection portion 613 extends in a planar manner in the longitudinal direction, and is a portion to which the first curved surface portion 612 is connected at one end. The first connection portion 613 has a first locking portion 615, a first convex portion 616, a first through hole 6110, and a first concave portion 6111, and the second connection portion 623 of the second member 62 Connecting. The side on which the first locking portion 615 of the first member 61 is formed is referred to as the inside of the first member 61, and the side on which the first locking portion 615 of the first member 61 is not formed is the first member. It shall be called the outside of 61.

The first locking portion 615 is provided to protrude to the inside of the first connection portion 613. The first locking portion 615 is configured to be insertable into the second through hole 625 formed in the second connection portion 623 of the second member 62. The first locking portion 615 may have a hook shape or the like having a substantially L-shape in a side view and extending toward the lower side of the drawing as shown in FIG. That is, the first locking portion 615 may have any shape as long as it can be locked to the peripheral edge of the inserted second through hole 625.

The first convex portion 616 is provided to protrude to the inside of the first connection portion 613. The first convex portion 616 is configured to be able to be fitted to the second concave portion 626 formed in the second connection portion 623 of the second member 62. The first convex portion 616 may have a shape or the like in which a portion fitted to the second concave portion 626 is protruded toward the left side of the drawing as shown in FIG. That is, the first convex portion 616 may have a shape that can be fitted to the inserted second concave portion 626.

The specific configuration of the first convex portion 616 will be described.
As shown in FIGS. 8 and 15, a U-shaped cutout 616 B is formed in the first connection portion 613. A portion of the first connection portion 613 surrounded by the notch 616B by forming the notch 616B functions as the tongue piece 616A. The first projection 616 is formed on the tongue piece 616A. By doing so, the tongue piece portion 616A is more easily bent than the first connection portion 613 by the notch portion 616B. That is, the tongue piece 616A is easily bent in the direction of the arrow X1 shown in FIG. 15 with the base end of the tongue piece 616A as an axis. Along with the movement of the tongue portion 616A, the first convex portion 616 also moves. The base end of the tongue portion 616A is a portion on the upper side of the drawing which is not cut out by the cutout portion 616B.

However, the first convex portion 616 may be formed in the first connection portion 613 without forming the notch portion 616B and the tongue piece portion 616A.

The first through hole 6110 is provided to penetrate the first connection portion 613. The first through hole 6110 is formed in a shape in which the second locking portion 6210 formed in the second connection portion 623 of the second member 62 can be inserted. The first through hole 6110 may have a shape into which the second locking portion 6210 can be inserted, for example, a rectangular shape or an elliptical shape. That is, the first through hole 6110 may have any shape as long as the second locking portion 6210 can be inserted and locked.

The first concave portion 6111 is formed so that the second convex portion 6211 provided so as to project to the inside of the second connection portion 623 can be inserted and fitted. The first recess 6111 may be formed so as to penetrate the first connection portion 613, or may be formed by thinning a part of the first connection portion 613. That is, the first concave portion 6111 may have a shape in which the inserted second convex portion 6211 can be fitted.

The specific shape and size of the first locking portion 615, the first convex portion 616, the first through hole 6110, and the first concave portion 6111 are not particularly limited, and the above function can be achieved. The shape and size can be as long as possible.

The second member 62 includes a second flat surface portion 621, a second curved surface portion 622, and a second connection portion 623.
The second flat surface portion 621 extends flat in the longitudinal direction, and is a portion to which the second curved surface portion 622 is connected at one end. The second flat portion 621 is attached to a part of the side surface of the heat exchanger 10 and covers the exposed portion 12 a. That is, the second flat surface portion 621 is configured as a flat shape capable of covering at least the exposed portion 12a.
The second flat surface portion 621 may cover at least the exposed portion 12 a, but may cover the end 13 </ b> A which is a part of the fin 13.

As shown in FIG. 11, the second curved surface portion 622 is curved in top view, the second flat surface portion 621 is connected to one end, and the second connection portion 623 is connected to the other end. It is a part. That is, the second curved surface portion 622 is located between the second flat surface portion 621 and the second connection portion 623 and connects them. The second curved surface portion 622 is configured to have the same radius as the arc of the outer periphery of the header manifold 11 and is attached so as to cover a part of the outer periphery of the header manifold 11.

The second connection portion 623 extends in a planar manner in the longitudinal direction, and is a portion to which the second curved surface portion 622 is connected at one end. The second connection portion 623 has a second locking portion 6210, a second protrusion 6211, a second through hole 625, and a second recess 626, and the first connection portion 613 of the first member 61. Connecting. The side on which the second locking portion 6210 of the second member 62 is formed is referred to as the inner side of the second member 62, and the side on which the second locking portion 6210 of the second member 62 is not formed is the second member. It shall be called the outside of 62.

The second locking portion 6210 is provided to protrude to the inside of the second connection portion 623. The second locking portion 6210 is configured to be insertable into the first through hole 6110 formed in the first connection portion 613 of the first member 61. The second locking portion 6210 may have a hook shape or the like in a substantially L-shape in a side view extending toward the upper side of the drawing as a portion inserted into the first through hole 6110 as shown in FIG. That is, the second locking portion 6210 may have a shape that can be locked to the peripheral edge of the inserted first through hole 6110.

The second convex portion 6211 is provided to protrude to the inside of the second connection portion 623. The second convex portion 6211 is configured to be capable of being fitted to the first concave portion 6111 formed in the first connection portion 613 of the first member 61. The second convex portion 6211 may have a shape or the like in which a portion fitted to the first concave portion 6111 is protruded toward the right side in the drawing as shown in FIG. That is, the second convex portion 6211 may have a shape that can be fitted to the inserted first concave portion 6111.

The specific configuration of the second convex portion 6211 will be described.
As shown in FIGS. 14 and 16, a U-shaped cutout 6211 B is formed in the second connection portion 623. By forming the notch 6211B, a part of the second connection portion 623 surrounded by the notch 6211B functions as the tongue 621A. The second protrusion 6211 is formed on the tongue piece 6211A. By doing so, the tongue portion 6211A is more easily bent than the second connection portion 623 by the notch 6211B. That is, the tongue piece 6211A is easily bent in the direction of the arrow X2 shown in FIG. 16 with the base end of the tongue piece 6211A as an axis. Along with the movement of the tongue piece 6211A, the second convex portion 6211 also moves. Note that the base end of the tongue piece 6211A is a portion on the sheet tongue side not cut out by the cutout 6211B.

However, the second protrusion 6211 may be formed in the second connection portion 623 without forming the notch 6211 B and the tongue piece 6211 A.

The second through hole 625 is provided to penetrate the second connection portion 623. The second through hole 625 is formed in a shape in which the first locking portion 615 formed in the first connection portion 613 of the first member 61 can be inserted. The second through hole 625 may have a shape into which the first locking portion 615 can be inserted, for example, a rectangular shape or an elliptical shape. That is, the second through hole 625 may have a shape in which the first locking portion 615 can be inserted and locked.

The second concave portion 626 is formed to be insertable and engageable with a first convex portion 616 provided so as to protrude to the inside of the first connection portion 613. The second recess 626 may be formed so as to penetrate the second connection portion 623 or may be formed by thinning a part of the second connection portion 623. That is, the second concave portion 626 may have a shape in which the inserted first convex portion 616 can be fitted.

The specific shape and size of the second locking portion 6210, the second protrusion 6211, the second through hole 625, and the second recess 626 are not particularly limited, and the above function can be achieved. The shape and size can be as long as possible.

Here, although the case where a locking part, a convex part, a through hole, and a crevice were formed in both the 1st member 61 and the 2nd member 62 was shown as an example, it does not limit to this. The locking portion and the projecting portion may be formed in one of the first member 61 or the second member 62, and the through hole and the recess may be formed in the other of the first member 61 or the second member 62. That is, one or more correspondences in which the locking portion and the through hole form one set are formed in the first member 61 and the second member 62, and one or more correspondences in which the protrusion and the recess form one set It may be formed on the one member 61 and the second member 62.

<Mounting structure of cover 60>
FIG. 17 is a plan view schematically showing a state before the cover 60 is attached to the header collecting pipe 11. As shown in FIG. FIG. 18 is a perspective view schematically showing a state before the cover 60 is attached to the header manifold 11. As shown in FIG. FIG. 19 is a plan view schematically showing the header collecting pipe 11 with the cover 60 attached. FIG. 20 is a perspective view schematically showing the header collecting pipe 11 with the cover 60 attached. The attachment of the cover 60 to the header manifold 11 will be described with reference to FIGS. 17 to 20. FIG. In FIG. 17 and FIG. 19, among the two side surfaces located on the upper and lower sides of the sheet perpendicular to the flow of the air supplied to the heat exchanger 10, the side surface on the lower side of the sheet is called the first side surface 10 a Is referred to as the second side surface 10b.

As shown in FIGS. 17 to 20, the first flat surface portion 611 of the first member 61 is in contact with the first side surface 10a and covers the exposed portion 12a. That is, the first flat portion 611 has a structure in which the A dimension is larger than the B dimension shown in FIG.
Similarly, the second flat surface portion 621 of the second member 62 contacts the second side surface 10 b and covers the exposed portion 12 a. That is, like the first flat portion 611, the second flat portion 621 has a structure in which the A dimension is larger than the B dimension shown in FIG.
The B dimension is the length from the center of the header manifold 11 to the end on the right side of the drawing of the exposed portion 12a. The A dimension is the length from the center of the header manifold 11 to the end of the first flat surface 611 on the right side of the drawing.

Accordingly, the cover 60 is attached to the header collecting pipe 11 by the first member 61 and the second member 62 so as to sandwich the header collecting pipe 11. When the cover 60 is attached to the header manifold 11, the first flat portion 611 and the second flat portion 621 cover the exposed portion 12a. Therefore, the cover 60 can close a space through which air not used for heat exchange flows, and can prevent the entry of foreign matter which is at least one of metal powder and water. Therefore, according to the heat exchanger 10, generation | occurrence | production of electrolytic corrosion can be suppressed and it becomes possible to achieve lifetime improvement. In the outdoor unit 100 </ b> A and the air conditioner 100 as well, long life can be expected.

As shown in FIGS. 17 and 19, the seal member 63 may be provided between the first flat portion 611 and the first side surface 10a. Further, as shown in FIGS. 17 and 19, a seal member 63 may be provided between the second flat surface portion 621 and the second side surface 10 b. The seal member 63 may be made of a shrinkable member such as rubber or sponge.
Further, the periphery of the header manifold 11 may be covered with a heat insulating material.

Further, when the cover 60 is attached to the header manifold 11, the first connection portion 613 and the second connection portion 623 are connected. At this time, the first locking portion 615 of the first connection portion 613 is locked to the second through hole 625 of the second connection portion 623. Further, the first convex portion 616 of the first connection portion 613 is fitted in the second concave portion 626 of the second connection portion 623. Similarly, the second locking portion 6210 of the second connection portion 623 is locked to the first through hole 6110 of the first connection portion 613. In addition, the second convex portion 6211 of the second connection portion 623 is fitted in the first concave portion 6111 of the first connection portion 613. As a result, the first member 61 and the second member 62 are fixed.

As shown in FIGS. 19 and 20, when the cover 60 is attached to the header manifold 11, the first flat portion 611 and the second flat portion 621 restrict movement of the cover 60 in the rotational direction. When the first member 61 and the second member 62 are fixed, the first curved surface portion 612 and the second curved surface portion 622 cover half or more of the outer periphery of the header manifold 11. Therefore, the movement of the cover 60 in the direction of the arrow X3 shown in FIG. 19 is restricted by the first curved surface portion 612 and the second curved surface portion 622. That is, since the width of the heat transfer tube 12 is smaller than the diameter of the header collecting pipe 11, and the first curved surface portion 612 and the second curved surface portion 622 cover half or more of the outer periphery of the header collecting pipe 11, the header collecting pipe 11 is used as a stopper. The movement of the first flat portion 611 and the second flat portion 621 is restricted. Therefore, the cover 60 can be prevented from falling off.

<Method of Fixing First Member 61 and Second Member 62>
FIG. 21 is a perspective view schematically showing the correspondence between the first member 61 and the second member 62 of the cover 60. As shown in FIG. FIG. 22 is a cross-sectional view schematically showing a procedure of a method of fixing the first member 61 and the second member 62 of the cover 60. As shown in FIG. FIG. 23 is a cross-sectional view schematically showing a procedure of a method of fixing the first member 61 and the second member 62 of the cover 60. As shown in FIG. FIG. 24 is a cross-sectional view schematically showing a procedure of a method of fixing the first member 61 and the second member 62 of the cover 60. As shown in FIG. FIG. 25 is a cross-sectional view schematically showing the dimensional relationship between the first member 61 and the second member 62 of the cover 60. As shown in FIG. A method of fixing the first member 61 and the second member 62 will be described based on FIGS. 21 to 25. 22 to 25 show vertical cross sections of the first member 61 and the second member 62 as viewed from the first connection portion 613 and the second connection portion 623 side. Also, in FIG. 22 to FIG. 25, the header collecting pipe 11 is not shown for convenience.

First, as shown in FIGS. 21 and 22, the first member 61 is moved in the direction of arrow X4, and the second member 62 is moved in the direction of arrow X5. That is, both are moved relatively so that the 1st member 61 and the 2nd member 62 may be closely approached. Then, as shown in FIG. 23, the second locking portion 6210 of the second member 62 is inserted into the first through hole 6110 of the first connection portion 613. Further, as shown in FIG. 23, the second convex portion 6211 of the second member 62 abuts on the first connection portion 613 of the first connection portion 613, and the tongue piece 6211A is bent and deformed. That is, the second convex portion 6211 moves in the X2 direction.

Next, as shown in FIG. 24, the first member 61 is moved in the direction of arrow X6, and the second member 62 is moved in the direction of arrow X7. That is, the first member 61 and the second member 62 are relatively moved to the opposite side. Then, as shown in FIG. 24, the second locking portion 6210 of the second member 62 is locked to the periphery of the first through hole 6110 of the first connection portion 613. Further, as shown in FIG. 24, the second convex portion 6211 of the second member 62 moves to the formation position of the first concave portion 6111 of the first connection portion 613 while sliding on the first connection portion 613. When the second convex portion 6211 is moved to the position of the first concave portion 6111, the bending of the tongue piece 6211A is eliminated, and the second convex portion 6211 is fitted to the first concave portion 6111 by returning to the original state. Thus, the first member 61 and the second member 62 are fixed.

As shown in FIG. 25, the long side and the short side of the first through hole 6110 are equal to or longer than the long side and the short side of the second locking portion 6210. The long side of the first through hole 6110 is the length in the Y direction of FIG. The short side of the first through hole 6110 is the length in the Z direction of FIG. Therefore, when the first member 61 and the second member 62 are combined, the second locking portion 6210 can be inserted into the first through hole 6110.

The first concave portion 6111 is equal to or slightly larger than the outer diameter of the second convex portion 6211. Therefore, when the first member 61 and the second member 62 are combined, the second convex portion 6211 can be fitted in the first concave portion 6111.
The depth of the first concave portion 6111, that is, the length in the X direction in FIG. 25 may be determined according to the projection length of the second convex portion 6211. That is, as shown in FIG. 25, although the first recess 6111 may penetrate the first connection portion 613, the first recess 6111 may be formed to such a depth that the second protrusion 6211 can be fitted. Good.

Also, the dimension C from the tip of the second locking portion 6210 to the center of the second protrusion 6211 is smaller than the dimension D from the upper end surface 6119 of the first through hole 6110 to the center of the first recess 6111 There is. Therefore, as shown in FIG. 23, in a state where the second locking portion 6210 is inserted into the first through hole 6110, the second convex portion 6211 is pressed against the first connection portion 613 of the first member 61. Become.

In this state, the first member 61 and the second member 62 are slid in opposite directions relative to each other. Then, the second convex portion 6211 slides on the surface 617 of the first connection portion 613 toward the first concave portion 6111. In addition, one surface 6218 of the inner surface of the second locking portion 6210 slides on the surface 618 of the first connection portion 613, and the other surface 6219 of the inner surface of the second locking portion 6210 is the 1 slide on the surface 617 of the connection portion 613; Then, when the second convex portion 6211 is fitted in the first concave portion 6111, the first connection portion 613 at the periphery of the first through hole 6110 is sandwiched by the surface 6218 and the surface 6219 of the second locking portion 6210. Thereby, the movement of the first member 61 and the second member 62 in the X direction in FIG. 25 is restricted.

The length of the gap between the surface 6218 and the surface 6219 of the second locking portion 6210 is equal to or slightly smaller than the thickness of the first connection portion 613. Therefore, when the first member 61 and the second member 62 are combined, the second locking portion 6210 is always tensioned by bending of the second locking portion 6210. As a result, the movement of the first member 61 and the second member 62 in the Z direction in FIG. 25 is restricted, and rattling of the first member 61 and the second member 62 can be prevented.

The second convex portion 6211 utilizes the bending of the second locking portion 6210, the bending of the surface 6219 of the second locking portion 6210, and the bending of the surface 617 of the first connection portion 613 to provide tension in the X direction. In this state, the first connection portion 613 slides. The tension in the X direction is a force that automatically fits when the second convex portion 6211 and the first concave portion 6111 are put together. When the second convex portion 6211 is fitted in the first concave portion 6111, the movement of the first member 61 and the second member 62 in the Y direction and the Z direction in FIG. 25 is restricted.

As described above, movement in the X direction can be restricted by the second locking portion 6210 and the first through hole 6110, and movement in the Y direction and the Z direction can be restricted by the second projection 6211 and the first recess 6111. ing. Therefore, by fixing the first member 61 and the second member 62, it is possible to restrict movement in three directions. In addition, by fixing the first member 61 and the second member 62, the movement of the cover 60 in the rotational direction can also be regulated by the first curved surface portion 612 and the second curved surface portion 622.

<Modification 1>
FIG. 26 is a side view schematically showing one of the modified examples of the cover 60. As shown in FIG. One modified example of the cover 60 will be described based on FIG.

As described above, the cover 60 is attached to the header manifold 11 by the first member 61 and the second member 62 in a state in which movement in three directions is restricted. In addition to this, as shown in FIG. 26, the stopper 80 may be attached to the lower ends of the first member 61 and the second member 62. In this way, the movement of the first member 61 and the second member 62 can be further restricted. The shape, the constituent material, and the size of the stopper 80 are not particularly limited, but may correspond to the shape of the lower end when the first member 61 and the second member 62 are fixed. Further, the stopper 80 may be attached to the upper end portions of the first member 61 and the second member 62.

<Modification 2>
FIG. 27 is a perspective view schematically showing one of the modified examples of the cover 60. As shown in FIG. FIG. 28 is a perspective view schematically showing the heat exchanger 10 provided with the cover 60 shown in FIG. One modified example of the cover 60 will be described based on FIGS. 27 and 28. FIG.

In the cover 60 shown in FIG. 27, a plurality of first through holes 6110 are formed in the first member 61, and a plurality of second locking portions 6210 are formed in the second member 62. The first through hole 6110 located on the upper side of the drawing of FIG. 27 is referred to as a first through hole 6110-1, and the first through hole 6110 located on the lower side of the drawing of FIG. 27 is referred to as a first through hole 6110-2. . The second locking portion 6210 positioned on the upper side of the drawing of FIG. 27 is referred to as a second locking portion 6210-1, and the second locking portion 6210 positioned on the lower side of the drawing of FIG. It is called -2.

The second locking portion 6210-1 and the second locking portion 6210-2 are configured such that the tips thereof face upward in the drawing. By doing this, the locking direction of the first through hole 6110-1 of the second locking portion 6210-1 and the locking direction of the first through hole 6110-2 of the second locking portion 6210-2 are unified. can do. FIG. 28 shows a state in which the first member 61 and the second member 62 are joined at four places shown by a to d. In the case shown in FIG. 28, the two first through holes 615-1 and the two first through holes 625-1 are also formed in the second member 62. The second through hole 625-2 is formed. As described above, the first member 61 and the second member 62 can be joined by the plurality of locking portions and the plurality of through holes by one slide operation. Therefore, according to the cover 60 shown in FIG. 27 and FIG. 28, it becomes possible to attach to the header manifold 11 more simply and strongly.

As shown in FIG. 28, the first locking portion 615 of the first member 61 and the second through hole 625 of the second member 62 can be configured in the same manner. However, the number of first locking portions 615 formed on the first member 61 and the number of second locking portions 6210 formed on the second member 62 need not be the same. Further, the first through hole and the second through hole may be formed in accordance with the number of corresponding second locking portions and first locking portions.

As mentioned above, the heat exchanger 10 is provided with the cover 60 which covers a part of header manifold 11 and the exposed part 12a. Therefore, according to the heat exchanger 10, the cover 60 can close the space through which the air not subjected to heat exchange flows, and can prevent the foreign matter, which is at least one of the metal powder and the moisture, from intruding from the exposed portion 12a. .

In the heat exchanger 10, since the first member 61 and the second member 62 are fixed by the locking portion being locked in the through hole and the convex portion being fitted in the recess, a screw or the like for fixing This eliminates the need for a fastening member, thereby reducing the time and cost required for fixing and improving the assemblability.

Since the heat exchanger 10 is configured so that the dimension C is smaller than the dimension D, the convex portion is pressed against the first connection portion 613 or the second connection portion 623 when the locking portion is inserted into the through hole. And the fitting force when the convex portion and the concave portion are put together can be obtained. That is, according to the heat exchanger 10, it is not necessary to require complicated mechanism and complicated effort for fitting of a convex part and a crevice.

Since the heat exchanger 10 has the peripheral edge of the through hole sandwiched by the two surfaces of the locking portion, the movement of the first member 61 and the second member 62 is restricted without requiring a complicated mechanism and complicated labor. it can.

Since the heat exchanger 10 is provided on the tongue portion which is a portion surrounded by the notch portion, the heat exchanger 10 may have a shape that is easily deformed without requiring a complicated mechanism and complicated labor. it can.

According to the heat exchanger 10, since the header collecting pipe 11, the heat transfer pipe 12 and the fins 13 are made of aluminum or aluminum alloy, the joint between the header collecting pipe 11 and each heat transfer pipe 12 by the cover 60 15 electrolytic corrosion can be suppressed.

In the heat exchanger 10, the heat transfer tube 12 is formed of a flat tube in which the area of the exposed portion 12a is larger than the area of the exposed portion of the circular tube, and the exposed portion 12a is covered with a cover 60. Therefore, even if a flat tube is used as the heat transfer tube 12, the exposed portion 12 a can be covered by the cover 60, and intrusion of foreign matter into the joint portion 15 can be suppressed.

Since the outdoor unit 100A includes the heat exchanger 10, the blower 30, and the compressor 51, the life can be extended.

The air conditioner 100 includes the outdoor unit 100A and the indoor unit 100B, and has the refrigerant circuit 55 formed by connecting the element devices mounted in the respective units, thus prolonging the life Can be

Second Embodiment
FIG. 29 is a front view schematically showing an example of a cover 60 of a heat exchanger according to Embodiment 2 of the present invention. FIG. 30 is a perspective view schematically showing another example of the cover 60 of the heat exchanger according to Embodiment 2 of the present invention. The heat exchanger according to the second embodiment of the present invention will be described centering on the cover 60 based on FIGS. 29 and 30. FIG. In the second embodiment, differences from the first embodiment will be mainly described, and the same parts as the first embodiment will be assigned the same reference numerals and descriptions thereof will be omitted.

In the first embodiment, the difference in the configuration of the first member 61 and the second member 62 is not particularly described, but in the second embodiment, the first member 61 and the second member 62 are made common. . That is, in FIG. 29 and FIG. 30, the second member 62 illustrated on the left side of the drawing has the same configuration as the first member 61 illustrated on the left side of the drawing rotated 180 degrees, that is, upside down. There is.

In the first member 61 shown in FIG. 29, the first through holes 6110 are provided at symmetrical positions of the first locking portion 615 with reference to the central portion in the longitudinal direction of the first member 61.
Further, in the first member 61 shown in FIG. 29, the first concave portion 6111 is provided at the symmetrical position of the first convex portion 616 with reference to the central portion in the longitudinal direction of the first member 61.
Similarly, in the second member 62 shown in FIG. 29, the second locking portion 6210 is provided at a symmetrical position of the second through hole 625 with reference to the central portion in the longitudinal direction of the second member 62.
Further, in the second member 62 shown in FIG. 29, second convex portions 6211 are provided at symmetrical positions of the second concave portion 626 with reference to a central portion in the longitudinal direction of the second member 62.

The first member 61 shown in FIG. 30 includes a first connection portion 613-1, a first connection portion 613-2, and a first connection portion 613-3.
A first through hole 6110-1 is formed in the first connection portion 613-1.
In the first connection portion 613-2, a first recess 6111, a first through hole 6110-2, a first locking portion 615-1, and a first protrusion 616 are formed.
A first locking portion 615-2 is formed in the first connection portion 613-3.

The second member 62 shown in FIG. 30 includes a second connection portion 623-1, a second connection portion 623-2, and a second connection portion 623-3.
A second locking portion 6210-1 is formed in the second connection portion 623-1.
In the second connection portion 623-2, a second convex portion 6211, a second locking portion 6210-2, a second through hole 625-1, and a second concave portion 626 are formed.
A second through hole 625-2 is formed in the second connection portion 623-3.

Then, in the first member 61 shown in FIG. 30, the first through holes 6110-2 are provided at symmetrical positions of the first locking portion 615-1 with reference to the central portion in the longitudinal direction of the first member 61.
Further, in the first member 61 shown in FIG. 30, the first concave portion 6111 is provided at the symmetrical position of the first convex portion 616 with reference to the central portion in the longitudinal direction of the first member 61.
Similarly, in the second member 62 shown in FIG. 30, the second locking portion 6210-2 is provided at the symmetrical position of the second through hole 625-1 with reference to the central portion in the longitudinal direction of the second member 62.
Further, in the second member 62 shown in FIG. 30, second convex portions 6211 are provided at symmetrical positions of the second concave portion 626 with reference to a central portion in the longitudinal direction of the second member 62.

With such a configuration, the first member 61 and the second member 62 can have the same shape, and parts can be shared. Therefore, compared with the case where the 1st member 61 and the 2nd member 62 are created separately, parts kind will decrease. Therefore, according to the cover 60 shown in FIGS. 29 and 30, it is possible to reduce the parts management cost and the initial cost of the mold.

If the diameter of the first header collecting pipe 11a and the diameter of the second header collecting pipe 11b are the same, the cover 60 can be used for both of the header collecting pipes 11. In this case, since it is possible to use the first member 61 and the second member 62 having the same shape, the reduction of the part management cost and the reduction of the initial cost of the mold become more remarkable.

As described above, in the heat exchanger according to the second embodiment of the present invention, since the first member 61 and the second member 62 have the same shape, reduction of parts management cost and reduction of initial cost of the mold Can be realized.

DESCRIPTION OF SYMBOLS 10 heat exchanger, 10a 1st side surface, 10b 2nd side surface, 11 header manifold, 11a 1st header manifold, 11b 2nd header manifold, 12 heat exchanger tube, 12a exposed part, 13 fins, 13A end, 15 Junctions, 20 control units, 30 blowers, 51 compressors, 52 four-way switching valves, 53 load side heat exchangers, 53A blower fans, 54 expansion valves, 55 refrigerant circuits, 56 gas side communication pipes, 57 liquid side communication pipes, DESCRIPTION OF SYMBOLS 58 Refrigerant piping, 60 cover, 61 1st member, 62 2nd member, 63 seal member, 70 case, 70a right side panel, 70b rear panel, 70c left side panel, 70d front panel, 70e top panel, 70f bottom surface Panel, 71 back side air intake, 72 side air intake, 73 air outlet, 74 guard, 75 Partition plate, 80 stopper, 100 air conditioner, 100A outdoor unit, 100B indoor unit, 611 first flat surface portion, 612 first curved surface portion, 613 first connection portion, 613-1 first connection portion, 613-2 first surface Connecting portion, 613-3 first connecting portion, 615 first locking portion, 615-1 first locking portion, 615-2 first locking portion, 616 first convex portion, 616A tongue piece portion, 616B notch portion , 617, 618, 621 second flat surface, 622 second curved surface, 623 second connection, 623-1 second connection, 623-2 second connection, 623-3 second connection, 625 Second through hole, 625-1 second through hole, 625-2 second through hole, 626 second recess, 6110 first through hole, 6110-1 first through hole, 6110-2 first through hole, 111 first concave portion, 6119 upper end surface, 6210 second locking portion, 6210-1 second locking portion, 6210-2 second locking portion, 6211 second convex portion, 6211 A tongue piece portion, 6211 B notch portion, 6218 Plane, 6219 plane.

Claims (10)

1. A pair of header manifolds,
   A plurality of heat transfer pipes connected in parallel to each of the pair of header collecting pipes;
   A plurality of fins disposed between the plurality of heat transfer tubes;
   A cover attached to at least one of the pair of header collecting pipes;
   The cover is
   A heat exchanger covering a part of the header collecting pipe and between the header collecting pipe and the fins.
2. The cover is composed of a first member and a second member,
   The first member is
   A first curved surface portion covering a part of the header manifold;
   A first flat portion covering between the header manifold and the fins;
   And a first connection portion connected to the second member,
   The second member is
   A second curved surface portion covering a part of the header collecting pipe;
   A second flat portion covering between the header manifold and the fins;
   And a second connection portion connected to the first member,
   At least one locking portion is provided on at least one of the first connection portion and the second connection portion;
   A through hole is provided at a position corresponding to the formation position of at least one of the first connection portion and the second connection portion,
   At least one convex portion is provided on at least one of the first connection portion and the second connection portion,
   A concave portion is provided at a position corresponding to the formation position of at least one of the first connection portion and the second connection portion.
   The heat exchanger according to claim 1, wherein the first member and the second member are fixed by the locking portion being locked in the through hole and the convex portion being fitted in the recess.
3. The dimension from the tip of the locking portion to the center of the protrusion is
   The heat exchanger according to claim 2, wherein the heat exchanger is smaller than the dimension from the upper end surface of the through hole to the center of the recess.
4. The locking portion is formed in a hook shape,
   The heat exchanger according to claim 2 or 3, wherein a peripheral edge of the through hole is sandwiched by two surfaces of the locking portion.
5. The convex portion is
   A U-shaped notch is formed in at least one of the first connection portion and the second connection portion, and provided in a tongue piece portion which is a portion surrounded by the notch. The heat exchanger according to any one of 4.
6. The heat exchanger according to any one of claims 2 to 5, wherein the first member and the second member have the same shape.
7. The header collecting pipe, the heat transfer pipe, and the fins
   The heat exchanger according to any one of claims 1 to 6, which is made of aluminum or an aluminum alloy.
8. The heat transfer tube is
   The heat exchanger according to any one of claims 1 to 7, which is configured by a flat tube.
9. A heat exchanger according to any one of claims 1 to 8;
   A blower for supplying air to the heat exchanger;
   An outdoor unit comprising: a compressor that circulates a refrigerant in a refrigerant circuit including the heat exchanger.
10. An outdoor unit according to claim 9;
    And an indoor unit,
    An air conditioner that has a refrigerant circuit formed by connecting the component devices mounted on each unit.

Images