JP6573735B1 - Air conditioner - Google Patents

Abstract

Provided is an air conditioner including an outdoor unit having a structure in which water does not easily enter without increasing the number of parts. The air conditioner (1) includes a side plate (114) constituting the housing (110) of the outdoor unit (10), and a pipe cover (120) attached so as to cover the side plate (114). 120 is provided on the contact surface portion (131) in surface contact with the side surface plate (114) and the contact surface portion (131), and retains water that has entered the gap between the side surface plate (114) and the contact surface portion (131). A groove (132) for flowing down, and a drainage groove (133) for guiding the water that has entered the contact surface part (131) to the lower space (139) separated from the first opening (114c) of the side plate (114), Have.

Description

  The present invention relates to an air conditioner.

  The piping of the indoor unit of the air conditioner is pulled out outdoors and connected to the outdoor unit. When water such as rainwater falls on the contact surface between the outer plate of the outdoor unit of the air conditioner and the piping cover, it is necessary to prevent water from entering the opening of the outer plate of the outdoor unit inside the piping cover.

  Patent Document 1 discloses an outdoor unit that includes a metal cover member that covers a connector provided on an upper portion of one side surface of an outdoor unit body and a connection valve means provided on a lower side of the side surface from the outside of the outdoor unit body. Have been described. The outdoor unit described in Patent Document 1 describes that the cover member includes a packing at the upper end.

JP 2012-202616 A

  However, since the outdoor unit of Patent Document 1 includes a sealing member such as a packing, there is a problem that the number of parts and the number of mounting steps of the sealing member increase.

  This invention is made | formed in view of such a situation, and makes it a subject to provide an air conditioner provided with the outdoor unit of a structure where water does not enter easily, without increasing a number of parts.

In order to solve the above-described problems, an air conditioner of the present invention includes an outer plate that constitutes a housing of an outdoor unit, and a pipe cover that is attached so as to cover the outer plate, and the pipe cover extends in the vertical direction. A contact surface portion extending in surface contact with the outer plate, and a groove provided in the contact surface portion and extending in a vertical direction, the outer plate having an opening opening inside the housing, The groove extending in the direction is inclined to the inner side in the width direction of the pipe cover below the opening, and the lower end of the groove faces a space between the outer plate and the pipe cover. It was decided that
Other means will be described in the embodiment for carrying out the invention.

  ADVANTAGE OF THE INVENTION According to this invention, an air conditioner provided with the outdoor unit of a structure where water does not enter easily without increasing the number of parts is provided.

It is a block diagram which shows the refrigerant circuit of the air conditioner which concerns on embodiment of this invention. It is a perspective view which shows the external appearance structure of the indoor unit with which the air conditioner which concerns on the said embodiment is equipped, and an outdoor unit. It is a perspective view which shows the external appearance structure which attached the piping cover of the outdoor unit of the air conditioner which concerns on the said embodiment. It is a perspective view which shows the external appearance structure which removed the piping cover of the outdoor unit of the air conditioner which concerns on the said embodiment. It is a perspective view which shows the structure of the side plate of the housing | casing of the outdoor unit of the air conditioner which concerns on the said embodiment. It is the perspective view seen from the surface side of the piping cover attached to the side plate of the housing | casing of the outdoor unit of the air conditioner which concerns on the said embodiment. It is the perspective view seen from the back surface side of the piping cover attached to the side plate of the housing | casing of the outdoor unit of the air conditioner which concerns on the said embodiment. It is a principal part enlarged view of the back surface of the piping cover shown to FIG. 5B. FIG. 6B is an enlarged view of the groove and drainage groove of FIG. 6A. It is VIC arrow sectional drawing of FIG. 6B. It is VII arrow sectional drawing of FIG. 6A. It is a figure which shows the relationship between the groove | channel width of the piping cover of the outdoor unit of the air conditioner which concerns on the said embodiment, and the amount of water permeation. It is a figure which shows the relationship between the groove depth of the piping cover of the outdoor unit of the air conditioner which concerns on the said embodiment, and the infiltration amount of water. It is a figure which shows the relationship between the groove | channel width and groove depth of the piping cover of the outdoor unit of the air conditioner which concerns on the said embodiment, and the amount of water permeation. It is a front view which shows the structure of the contact surface part of the piping cover of the modification 1 of the air conditioner which concerns on the said embodiment. It is a front view which shows the structure of the contact surface part of the piping cover of the modification 2 of the air conditioner which concerns on the said embodiment. It is a front view which shows the structure of the contact surface part of the piping cover of the modification 3 of the air conditioner which concerns on the said embodiment.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In addition, the same code | symbol is attached | subjected to the common part in each figure, and the overlapping description is abbreviate | omitted.
(Embodiment)
FIG. 1 is a configuration diagram illustrating a refrigerant circuit Q of an air conditioner 1 according to an embodiment of the present invention. The solid line arrows in FIG. 1 indicate the refrigerant flow during the heating operation, and the broken line arrows in FIG. 3 indicate the refrigerant flow during the cooling operation.
As shown in FIG. 1, the air conditioner 1 includes an outdoor unit 10 installed outside (non-air-conditioned space) on the heat source side, and an indoor unit 20 installed indoors (air-conditioned space) on the use side. The connection pipes 30a and 30b (30) are connected.
The outdoor unit 10 includes a compressor 11, an outdoor heat exchanger 12, an outdoor fan 13, an outdoor expansion valve 14 (expansion valve), and a four-way valve 15.

The compressor 11 is a device that compresses a low-temperature and low-pressure gas refrigerant by driving the compressor motor 11a and discharges it as a high-temperature and high-pressure gas refrigerant.
The outdoor heat exchanger 12 is a heat exchanger in which heat exchange is performed between the refrigerant flowing through the heat transfer tube (not shown) and the outside air sent from the outdoor fan 13.

The outdoor fan 13 is a fan that sends outside air to the outdoor heat exchanger 12 by an outdoor fan motor 13 a and is installed in the vicinity of the outdoor heat exchanger 12.
The outdoor expansion valve 14 has a function of decompressing the refrigerant condensed in the “condenser” (one of the outdoor heat exchanger 11 and the indoor heat exchanger 22). The refrigerant decompressed in the outdoor expansion valve 14 is guided to an “evaporator” (the other of the outdoor heat exchanger 12 and the indoor heat exchanger 21).

  The four-way valve 15 is a valve that switches the refrigerant flow path according to the operation mode of the air conditioner 1. That is, during the cooling operation (see the broken arrow in FIG. 1), the compressor 11, the outdoor heat exchanger 12 (condenser), the outdoor expansion valve 14, and the indoor heat exchanger 21 (evaporator) are four-way valves. In the refrigerant circuit Q, which is sequentially connected in a ring shape via 15, the refrigerant circulates in the refrigeration cycle.

  During the heating operation (see the solid line arrow in FIG. 1), the compressor 11, the indoor heat exchanger 21 (condenser), the outdoor expansion valve 14, and the outdoor heat exchanger 12 (evaporator) are four-way valves. In the refrigerant circuit Q, which is sequentially connected in a ring shape via 15, the refrigerant circulates in the refrigeration cycle. In the refrigerant circuit Q, one of the “condenser” and “evaporator” described above is the outdoor heat exchanger 12, and the other is the indoor heat exchanger 21.

[Outdoor unit 10]
FIG. 2 is a perspective view illustrating an external configuration of the indoor unit 20 and the outdoor unit 10 included in the air conditioner 1 according to the present embodiment. FIG. 3 is a perspective view showing an external configuration of the outdoor unit 10, FIG. 3A is a diagram in which the piping cover 120 of the outdoor unit 10 is attached, and FIG. 3B is a diagram in which the piping cover 120 of the outdoor unit 10 is removed. It is.
As shown in FIG. 2, the air conditioner 1 connects the indoor unit 20 and the outdoor unit 10 with a connection pipe 30 and air-conditions the room where the indoor unit 20 is installed by the refrigerant cycle shown in FIG.

As shown in FIGS. 2 and 3, the outdoor unit 10 includes a housing 110 that constitutes a main body case. The case 110 is formed of a steel plate that is formed in a hollow rectangular parallelepiped shape and is entirely coated with an anticorrosive paint and covered.
The casing 110 is erected on the bottom plate 111 provided on the lower surface of the casing 110, the front plate 112 standing on the front end portion on the bottom plate 111, and the left and right end portions and the left and right rear end portions of the bottom plate 111. Side plates 113 and 114 (outer plates) and a front cover 112 and a top cover 115 provided at the upper ends of the side plates 113 and 114 are provided. The top cover 115 is an upper plate provided on the upper surface of the housing 110. The top cover 115 is horizontally provided at the upper end portions of the front plate 112 and the side plates 113 and 114.
Leg portions 116 for fixing the outdoor unit 10 are fixed to the front, rear, left and right of the lower surface of the bottom plate 111. A pipe cover 120 (described later) is attached to the side plate 114. The piping cover 120 attached to the side plate 114 constitutes an outer shell of the outdoor unit 10 together with the side plate 113, the top cover 115, and the bottom plate 111.

  In the outdoor unit 10, a compressor, an outdoor heat exchanger, and an outdoor fan (all not shown) are mounted on a bottom plate 111, covered with a housing 110, and connected to a piping connection valve (not shown) from the indoor unit 20. (See FIG. 2). The casing 110 is provided with an outdoor air suction portion on the outer surface facing the outdoor heat exchanger, and a fan cover 116 is provided on the front plate 112 facing the outdoor fan so that air can freely flow. The outdoor fan is rotationally driven so that the outdoor heat exchanger is on the upstream side and the fan cover 116 is on the downstream side, and the outdoor air is circulated to the outdoor heat exchanger.

<Side plate 114>
FIG. 4 is a perspective view showing the configuration of the side plate 114 of the housing 110.
As shown in FIG. 4, the side plate 114 has a main body face plate 114 a having an end portion 114 e that bends to the back surface of the housing 110, a right side of the main body face plate 114 a, and a ventilation port 114 b for taking in outside air, A first opening 114c (opening) formed above the left column side of the main body face plate 114a and a second opening 114d formed below the first opening 114c are provided. When the side plate 114 is attached to the housing 110 (see FIGS. 2 and 3), the terminal block 117 (see FIG. 3B) for drawing the power supply line and the signal line is disposed in the first opening 114c. . In addition, the connection end 31 (see FIG. 3B) of the connection pipe 30 (see FIG. 2) is disposed in the second opening 114d.
A pipe cover 120 is attached to the right row side of the main body face plate 114a so as to close the first opening 114c and the second opening 114d.

<Piping cover 120>
FIG. 5 is a perspective view showing the configuration of the piping cover 120 attached to the side plate 114 of the housing 110, FIG. 5A is a perspective view seen from the surface side of the piping cover 120, and FIG. It is the perspective view seen from the back side. 6A is an enlarged view of the main part of the back surface of the piping cover 120 shown in FIG. 5B, FIG. 6B is an enlarged view of the groove 132 and the drainage groove 133 in FIG. 6A, and FIG. It is. 7 is a cross-sectional view taken along arrow VII in FIG. 6A.
The piping cover 120 is a cover member for a side surface portion that covers the side surface plate 114 of the housing 110 (see FIGS. 2 and 3) from the outside.
As shown in FIG. 5A, the pipe cover 120 is a connector cover 121 that covers the terminal block 117 (see FIG. 3B) disposed in the first opening 114 c of the side plate 114 and the periphery thereof from the outside of the housing 110. And a bulging portion 122 that bulges outward in a transverse cross section (planar cross section) arc shape below the connector cover portion 121 and covers the connection end 31 (see FIG. 3B) installed in the second opening 114d. Prepare. The connector cover part 121 extends in the longitudinal direction (vertical direction, vertical direction) and is connected to the bulging part 122. The bulging portion 122 is provided with a recessed portion 123 extending in a direction (lateral direction) orthogonal to the longitudinal direction of the pipe cover 120. A handle portion 124 serving as a handle of the housing 110 is provided on the upper portion of the connector cover portion 121. A cutout 145 for drawing the connection pipe 30 (see FIG. 2) is provided on the side surface of the bulging portion 122 of the connector cover portion 121. The connector cover 121 is provided with a screw hole 121a for screwing the pipe cover 120 to the side plate 114.
Since the piping cover 120 is formed of a metal material, the mechanical and physical strength can be improved by expanding the bulging portion 122 by sheet metal processing or the like and providing the recessed portion 123. it can.

As shown in FIGS. 5B and 6A, both edges of the back surface of the pipe cover 120 (attachment surface to the side plate 114) extend in the longitudinal direction (vertical direction, vertical direction) and make surface contact with the side plate 114. A surface portion 131 is provided. The contact surface 131 has a width (full width) D from the end of the side surface of the pipe cover 120 to the internal space 138 (inside the opening of the side plate 114 inside the pipe cover 120), and the top cover 115 (see FIG. 2) to a position close to the bottom plate 111 in a longitudinal direction (vertical direction, vertical direction).
The contact surface portion 131 is formed with a groove 132 that retains and flows down water that has entered the contact surface between the pipe cover 120 and the side plate 114. The groove 132 is opened from the upper part of the contact surface part 131, extends to a lower part of the connector cover part 121, and communicates with the drain groove 133. The groove 132 is formed so as to cover at least the connector cover 121 portion that covers the first opening 114c (see FIG. 3B) of the side plate 114.
One or a plurality of drain grooves 133 (one in this embodiment) are formed with respect to the grooves 132. The drain groove 133 is inclined so as to guide the water that has entered the contact surface portion 131 to the lower space 139 inside the pipe cover 120. The inclined surface may be a curved surface.

  As shown in FIGS. 5B and 6A, on the back surface of the connector cover 121 of the piping cover 120, there is a space between the standing wall 134 that covers the first opening 114c (see FIG. 3B) of the side plate 114 from both sides and the standing walls 134 on both sides. Connecting partition plates 135, 136, and 137. The standing wall 134 has a stepped portion 134a whose portion facing the first opening 114c (see FIG. 3B) of the side plate 114 is higher, and is an upper space partitioned by the standing wall 134, the partition plate 135, and the partition plate 136 on both sides. Suppress water intrusion into 138. The partition plates 135, 136, and 137 improve the mechanical and physical strength of the connector cover portion 121 of the pipe cover 120.

<Structure of groove 132>
As shown in FIG. 6A, a groove 132 and a drain groove 133 are opened in the contact surface portion 131 of the pipe cover 120 that contacts the side plate 114 of the housing 110. The groove 132 communicates from the upper part of the contact surface part 131 to the drainage groove 133 in the lower part of the connector cover part 121. When water enters from the outside, the groove 132 collects the intruded water and flows it downward as a water flow. The drainage groove 133 guides and discharges the water flowing along the groove 132 to the lower space 139 inside the pipe cover 120. Note that the groove 132 and the drainage groove 133 may be subjected to water repellent treatment, and water discharge can be promoted.

  As shown in FIG. 6B and FIG. 7, the width (groove width) d1 of the groove 132 is 20% or more, preferably 20 to 60%, more preferably 20 to the width (full width) D of the contact surface portion 131. 30%. Further, as shown in FIGS. 6C and 7, the groove depth d2 of the groove 132 is, for example, 1 mm or more. In this embodiment, the groove width d1 and the groove depth d2 of the groove 132 and the drainage groove 133 are the same. By forming the grooves identically, the workability of the groove processing can be improved, and the flow rate of the water flowing from the grooves 132 into the drain grooves 133 can be stabilized.

FIG. 8 is a diagram showing the relationship between the groove width d1 and the groove depth d2 and the amount of water entering the first opening 114c of the side plate 114 inside the pipe cover 120. FIG. 8A shows the relationship between the groove width d1 and the water FIG. 8B is a diagram showing the relationship between the groove depth d2 and the amount of water intrusion.
The amount of water intrusion varies depending on the water pressure and flow rate when water is sprayed on the relevant part, and the spray angle. In FIG. 8, an example of actual measurement of the amount of water intrusion when the groove width d1 or the groove depth d2 is changed after the conditions for spraying the water are indexed (maximum value “5”, minimum value “0”). )).
As shown in FIG. 8A, when the groove width d1 is 0 [mm], the water intrusion amount is “5”, and when the groove width d1 is 1.4 [mm], the water intrusion amount is “4” and the groove width d1. Is 2.6 [mm], the amount of water intrusion is “3”. It was found that if the groove width d1 is increased, the amount of water intrusion can be prevented.

  As shown in FIG. 8B, when the groove depth d2 is 0 [mm], the water penetration amount is “5”, and when the groove depth d2 is 0.5 [mm], the water penetration amount is “4.8”. When the groove depth d2 is 1 [mm], the water penetration amount is “4.6”, and when the groove depth d2 is 1.5 [mm], the water penetration amount is “4.4” and the groove depth. When d2 is 2.5 [mm], the infiltration amount of water is “4”. It has been found that if the groove depth d2 is increased, the amount of water intrusion can be prevented.

FIG. 9 is a diagram showing the relationship between the groove width d1 and the groove depth d2 and the amount of water intrusion. The left vertical axis represents the groove width d1, the right vertical axis represents the groove depth d2, and the horizontal axis represents the amount of water intrusion.
As shown in FIG. 9, the larger the groove width d1 and the deeper the groove depth d2, the smaller the amount of water intrusion. When the groove width d1 and the groove depth d2 are 0, the amount of water intrusion is maximized. In addition, comparing the slopes of the respective graphs in FIG. 9, the effect of preventing the water intrusion by the former is large in the amount of water intrusion with respect to the groove width d1 and the amount of water intrusion with respect to the groove depth d2. For this reason, increasing the groove width d1 is more effective than increasing the groove depth d2. Therefore, in this embodiment, the groove depth d2 is set to a predetermined value (for example, 1 [mm]), and the groove width d1 of the groove 132 is 20% or more with respect to the width (full width) D of the contact surface portion 131, preferably 20 to 60%, more preferably 20 to 30%.
The depth of the drainage groove 133 is preferably 1 mm or more. When the depth is less than 1 mm, water droplets do not enter the drain groove 133 and spread on the contact surface.
The groove width d1 is preferably 20% or more with respect to the entire width of the contact surface. Moreover, it is preferable that the minimum value of the groove width d1 is 1.4 mm.

The groove width d1 and the groove depth d2 will be further considered. The reason why the upper limit value (˜60% with respect to D) is provided for the groove width d1 and the groove depth d2 is as follows.
As shown in FIG. 6B, the drainage groove 133 has an opening 134 that discharges the flowing water into the lower space 139 inside the pipe cover 120. The opening 134 opens to the end surface of the contact surface portion 131 and has a rectangular shape when viewed from the end. Since the drainage groove 133 is inclined toward the lower space 139 inside the pipe cover 120, the lateral width of the opening 134 is longer than the groove width d1 of the drainage groove 133.

  The groove width d1 and the groove depth d2 of the drainage groove 133 are not particularly required to have upper limit values from the viewpoint of the flow rate for discharging water. However, it has been found that when the opening area of the opening 134 is increased, a gap into which insects enter the cocoon is generated. In particular, in the outdoor unit 10, various insects may get trapped inside the housing 110 during use over time. If the insect enters the drainage groove 133 or the groove 132, the groove is clogged and it becomes difficult for water to flow, and the effect of the groove 132 collecting water is reduced. If the opening area of the opening 134 is equal to or smaller than the above upper limit value, there is no gap for insects to enter the cocoon, and such a problem can be prevented in advance.

Hereinafter, the effect of the piping cover 120 of the outdoor unit 10 of the air conditioner 1 configured as described above will be described.
6A and 6B, water such as rainwater falls on the contact surface between the side plate 114 (outer plate) (see FIGS. 2 and 3) of the casing 110 of the outdoor unit 10 and the piping cover 120. When applied, water may enter the gap between the side plate 114 of the housing 110 and the contact surface portion 131 of the pipe cover 120.
The infiltrated water penetrates into the groove 132 provided in the contact surface portion 131, and a predetermined amount of water is retained here. 6A and 6B, the water retained in the groove 132 is collected along the flow and becomes a water droplet and descends the groove 132. 6A and 6B, the water descending the groove 132 flows along the drainage groove 133 communicating with the groove 132, and is discharged into the lower space 139 inside the pipe cover 120.

  In this way, even if rain water or the like falls on the contact surface of the piping cover 120, the water that has entered the gap between the side plate 114 of the housing 110 and the contact surface portion 131 of the piping cover 120 is provided in the contact surface portion 131. It penetrates into the groove 132 formed and flows downward along the groove 132 and the drainage groove 133. For this reason, the infiltrated water does not reach the first opening 114c of the side plate 114, which is a place to be protected from water, such as a terminal block.

6B, water (for example, condensed water) may also enter the first opening 114c of the side plate 114 from the lower space 139 (see FIG. 6A) inside the pipe cover 120. . The groove 132 provided in the contact surface portion 131 also collects the intruded water and flows downward with respect to the water entering from the lower space 139 inside the pipe cover 120, and thus the side plate of the outdoor unit 110 inside the pipe cover 120. Intrusion of water into the first opening 114c of 114 can be prevented.
As described above, the groove 132 provided in the contact surface portion 131 of the pipe cover 120 collects water from both the outer side and the inner side of the contact surface portion 131 of the pipe cover 120 and retains and causes the water to flow down.

  As described above, the air conditioner 1 of the present embodiment includes the side plate 114 (outer plate) constituting the housing 110 of the outdoor unit 10 and the piping cover 120 attached to cover the side plate 114, The pipe cover 120 includes a contact surface portion 131 that is in surface contact with the side surface plate 114, a groove 132 that is provided on the contact surface portion 131, retains water that has entered the gap between the side surface plate 114 and the contact surface portion 131, and flows down. A drainage groove 133 that guides the water that has entered 131 to the lower space 139 that is spaced apart from the first opening 114 c (opening) of the side plate 114.

With this configuration, the water that has entered the gap between the side surface plate 114 of the housing 110 and the contact surface portion 131 of the pipe cover 120 penetrates into the groove 132 and flows downward along the groove 132 and the drain groove 133. Thereby, even if water permeates from the outside, it is possible to prevent water from entering the first opening 114 c of the side plate 114 of the outdoor unit 110 inside the pipe cover 120.
In particular, in this embodiment, it is possible to prevent water from entering the first opening 114c of the side plate 114 without using a seal member such as packing as in the prior art. It is possible to provide an air conditioner having a structure in which water does not easily enter without increasing the number of parts and the number of mounting steps of the seal member. Since the number of parts and the number of mounting steps of the seal member can be reduced, the cost can be reduced as compared with the prior art, and the outdoor unit 10 can be configured at a low cost.

[Modification]
Next, the modification of the piping cover 120 of the outdoor unit 10 of the air conditioner 1 which concerns on embodiment of this invention is demonstrated.
<Modification 1>
FIG. 10A is a front view showing the configuration of the contact surface portion 131A of the piping cover 120 of the first modification.
As shown in FIG. 10A, the contact surface 131A of the piping cover 120 that contacts the side plate 114 of the housing 110 (see FIGS. 2 and 3) has a groove 132 and a plurality of drain grooves 133A1, which communicate with the groove 132. 133A2 is grooved. The groove 132 communicates from the upper part of the contact surface part 131 to the drainage groove 133A1 in the lower part of the connector cover part 121, and further communicates with the drainage groove 133A2 below the drainage groove 133A2.

10A, water that has entered the gap between the side surface plate 114 of the housing 110 (see FIGS. 2 and 3) and the contact surface portion 131 of the piping cover 120 is supplied to the contact surface portion 131. It can penetrate into the provided groove 132. 10A, water that has entered the gap between the side plate 114 and the contact surface portion 131 of the pipe cover 120 from the lower space 139 (see FIG. 6A) inside the pipe cover 120 enters the contact surface portion 131A. It can penetrate into the provided groove 132.
10A, the water that has permeated the groove 132 descends the groove 132 while being collected along the flow. As shown by reference numerals c1 and c2 in FIG. 10A, the water descending the groove 132 flows into the drain groove 133A1 and the drain groove 133A2 and flows into the lower space 139 inside the pipe cover 120.

  In the first modification, the drainage of water can be further promoted by adopting a configuration in which the drainage grooves 133A1 and A2 communicate with the groove 132. That is, in the first modification, the water flowing down from the groove 132 is distributed and flowed into the drainage grooves 133A1 and 133A2, so that the groove width d1 and the groove depth d2 are made smaller than in the case of one drainage groove 133 shown in FIG. 6B. It becomes possible to do. Further, since the groove width d1 and the groove depth d2 can be reduced, it becomes easy to fit the upper limit values of the opening areas of the openings 134A1 and 134A2 of the drain grooves 133A1 and 133A2.

<Modification 2>
FIG. 10B is a front view illustrating the configuration of the contact surface portion 131B of the piping cover 120 according to the second modification.
As shown in FIG. 10B, the contact surface 131B of the piping cover 120 that contacts the side plate 114 of the housing 110 (see FIGS. 2 and 3) communicates with the plurality of grooves 132B1 and 132B2 and the grooves 132B1 and 132B2. A drainage groove 133 is opened. The groove 132B1 opens in the vertical direction outside the contact surface portion 131B of the pipe cover 120, and the groove 132B2 opens in the vertical direction inward of the contact surface portion 131B in parallel with the groove 132B1. The groove 132B1 and the groove 132B2 have different groove widths (for example, groove width of the groove 132B1> groove width of the groove 132B1) or different groove depths (for example, groove depth of the groove 132B1> groove depth of the groove 132B1). It may be.

In the above configuration, as shown by reference numeral a1 in FIG. 10B, water that has entered the gap between the side surface plate 114 of the housing 110 (see FIGS. 2 and 3) and the contact surface portion 131 of the piping cover 120 penetrates into the groove 132B1. Can be made. 10B, water that has entered the gap between the side plate 114 and the contact surface portion 131 of the pipe cover 120 from the lower space 139 (see FIG. 6A) inside the pipe cover 120 penetrates into the groove 132B2. Can be made.
Here, when the water that has entered the gap of the contact surface portion 131 of the pipe cover 120 cannot be absorbed in the groove 132B1, it penetrates into the adjacent groove 132B2 and is discharged by the groove 132B2.

  As shown by reference numerals b1 and b2 in FIG. 10B, the water that has permeated into the grooves 132B1 and 132B2 descends in the grooves 132B1 and 132B2 while being collected along the flow. As shown by reference symbol c in FIG. 10B, the water descending the grooves 132 </ b> B <b> 1 and 132 </ b> B <b> 2 merges at the drain groove 133 and is discharged into the lower space 139 inside the pipe cover 120.

  In the second modification, the total groove width can be set to the total groove width of the grooves 132B1 and 132B2 with respect to the width (full width) D of the contact surface portion 131B. it can. When the modification 2 is applied to the pipe cover 120 having the wide width D of the contact surface portion 131B, it is possible to realize a structure in which water is less likely to enter.

<Modification 3>
FIG. 10C is a front view showing the configuration of the contact surface portion 131C of the piping cover 120 of the third modification.
As shown in FIG. 10C, the contact surface portion 131C of the pipe cover 120 that contacts the side plate 114 of the housing 110 (see FIGS. 2 and 3) includes a meandering groove 132C. The meandering groove 132C is formed by connecting, for example, semicircular rings.

  In the above configuration, as shown by reference signs a1 and a2 in FIG. 10C, the water that has entered the gaps in the contact surface portion 131 of the pipe cover 120 penetrates into the groove 132C. 10C, the water that has permeated the groove 132C descends while meandering the groove 132C while being collected along the flow. 10C, the water descending while meandering through the groove 132C is discharged into the lower space 139 (see FIG. 6A) inside the pipe cover 120.

  In the third modification, a meandering groove 132C is provided in the contact surface portion 131C. The meandering groove 132C has a larger volume of the flow path than the straight groove. Further, since the length of the side surface of the groove 132C in which the invaded water wraps around the groove 132C is longer than the straight groove, the infiltrated water easily permeates through the groove 132C. For this reason, water can be discharged stably regardless of the amount of water entering. If the modification 3 is applied to the pipe cover 120 having the wide width D of the contact surface portion 131C, it is possible to realize a structure in which water is less likely to enter.

(Other embodiments)
As mentioned above, the embodiments and the modifications have been described in detail with reference to the drawings, but the present invention is not limited to these embodiments, and there are processes, manufacturing, design changes, and the like within the scope not departing from the gist of the present invention. An example is given below.
In addition, a part of the configuration of an embodiment and a modification can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of an embodiment.
Further, it is possible to add, delete, and replace other configurations for a part of the configuration of the embodiment.

DESCRIPTION OF SYMBOLS 1 Air conditioner 10 Outdoor unit 11 Compressor 12 Outdoor heat exchanger 13 Outdoor fan 14 Outdoor expansion valve (expansion valve)
15 Four-way valve 20 Indoor unit 30, 30a, 30b Connection pipe 31 Connection end 110 Housing 111 Bottom plate 112 Front plate 113, 114 Side plate (outer plate)
115 Top cover 116 Fan cover 114a Main body face plate 114b Ventilation opening 114c First opening (opening)
114d second opening 114e end 117 terminal block 120 piping cover 121 connector cover part 122 bulging part 123 recessed part 124 handle part 131, 131A, 131B, 131C contact surface part 132, 132B1, 132B2, 132C groove 133, 133A1, 133A2 Drainage groove 134 Opening part 138 Upper space 139 Lower space D Full width of contact surface part d1 Groove width d2 Groove depth

Claims (7)

An outer plate constituting a housing of the outdoor unit, and a piping cover attached so as to cover the outer plate,
The pipe cover extends in the up-down direction and comes into surface contact with the outer plate, and
A groove provided in the contact surface portion and extending in the vertical direction ;
The outer plate has an opening that opens into the housing,
The groove extending in the up-down direction is inclined inward in the width direction of the pipe cover below the opening, and the lower end of the groove faces a space between the outer plate and the pipe cover. air conditioner is out. 2. The air conditioner according to claim 1, wherein the groove has a function of retaining and flowing down water that has entered the gap between the outer plate and the contact surface portion. Before SL contact surface is in surface contact with the outside of the opening,
The air conditioner according to claim 1, wherein the groove has a drainage groove that guides water that has entered the contact surface portion to a lower space separated from the opening. The air conditioner according to claim 1, wherein the contact surface portion includes a plurality of rows of the grooves. The air conditioner according to claim 3 , wherein the contact surface portion includes a plurality of the drain grooves diverging from the groove. The air conditioner according to any one of claims 1 to 5, wherein the groove is straight or meandering. The air conditioner according to any one of claims 1 to 6, wherein the groove has a groove width of 20 to 60% with respect to a full width of the contact surface portion.

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