Heat exchanger support device

Abstract

This heat exchanger support device is positioned between a heat exchanger and a base positioned below the heat exchanger and is composed of a resin. Said heat exchanger support device comprises: a base part which has a longitudinal flat shape and has a flat main surface part; a trough part which is formed in the main surface part of the base part, is downwardly recessed from the main surface part and extends in the transverse direction of the base part; a first drainage hole which is formed from a through-hole that is formed in a first end part of the trough part in the extension direction thereof and passes through the sheet thickness of the trough part; and a water-guiding surface part which is formed in the trough part and which descends stepwise or continuously from a second end part of the trough part in the extension direction thereof, on the reverse side from the first end part, towards the first drainage hole formed in the first end part.

Description

[Technical Field]

[0001] The present disclosure relates to a heat exchanger support device that supports a heat exchanger. [Background technology]

[0002] Generally, air conditioners are known to perform cooling and heating operations by switching the flow of refrigerant using a flow switching device such as a four-way valve. When an air conditioner performs heating operations in an environment with low outdoor temperatures, frost forms on the heat exchanger of the outdoor unit, reducing heat exchange efficiency. For this reason, outdoor units are usually equipped with a defrosting function to remove frost.

[0003] The outdoor unit melts frost during defrost operation, causing it to flow downward as meltwater, which is then collected by a metal base located below the interior space of the outdoor unit and then drained to the outside through drainage holes formed in the metal base. However, because the metal base is corrugated, some of the meltwater collected by the metal base may not reach the drainage holes and may remain on the metal base. If the outdoor temperature is below freezing when the defrost operation ends and heating operation is resumed, the meltwater remaining on the metal base will refreeze. Furthermore, because the heat exchanger periodically undergoes defrost operation, the meltwater that has frozen once will continue to freeze, eventually covering the entire metal base with ice.

[0004] When the metal base is covered with ice, the ice blocks the drainage holes in the metal base. This prevents meltwater from draining, causing the ice to grow to the bottom of the heat exchanger and crush the aluminum fins on the heat exchanger. If the ice continues to grow and reaches the heat transfer tubes, in the worst case scenario, the tubes may break, leading to a refrigerant gas leak.

[0005] In addition, in heat exchangers in which the axial direction of the heat transfer tubes extends vertically, heat exchanger headers such as a liquid header and a gas header are arranged below the heat exchanger. Because the heat exchanger headers are made of aluminum, they may be damaged by growing ice. Therefore, when the heat exchanger headers are arranged below the heat exchanger, the risk of gas leakage due to freezing and melting increases even more.

[0006] Therefore, for example, Patent Document 1 discloses a technique in which an anti-freeze heater is installed on the metal base of the outdoor unit to prevent the meltwater from freezing. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] International Publication No. 2013 / 088713 Summary of the Invention [Problem to be solved by the invention]

[0008] However, even if an anti-freeze heater is installed on a metal base, as in the outdoor unit described in Patent Document 1, freezing cannot be completely prevented. In other words, in reality, only the ice near the anti-freeze heater melts, and freezing progresses in areas where the anti-freeze heater is not installed. As a result, the top of the anti-freeze heater will eventually freeze, forming a blanket of ice on the metal base, which could damage the aluminum fins and heat transfer tubes of the heat exchanger.

[0009] Furthermore, because the heat exchanger header is made of aluminum and the metal base is made of steel, it is directly affected by dissimilar metal corrosion, which can cause paint peeling, and paint peeling on the metal base can lead directly to serious malfunctions.

[0010] The present disclosure has been made to solve such problems, and aims to provide a heat exchanger support device that can efficiently drain drain water from a heat exchanger, preventing damage to the heat exchanger due to freezing and suppressing the occurrence of dissimilar metal corrosion. Note that in the following description, drain water includes melt water generated by melting frost during defrosting operation and drain water that adheres to the surfaces of the heat transfer tubes of the heat exchanger due to condensation of moisture in the air. [Means for solving the problem]

[0011] A heat exchanger support device according to the present disclosure is a heat exchanger support device made of resin and disposed between a heat exchanger and a base disposed below the heat exchanger, the heat exchanger support device comprising: a base having a long, flat, plate-like shape and a flat main surface; a groove formed on the main surface of the base, recessed downward from the main surface and extending in a short direction of the base; a first drainage hole formed at a first end in the extension direction of the groove and constituted by a through-hole passing through a plate thickness of the groove; and a water-conducting surface formed inside the groove and descending stepwise or continuously from a second end opposite the first end in the extension direction of the groove toward the first drainage hole formed at the first end. The heat exchanger is disposed in an internal space of the housing, the base is disposed below at least one side surface of the housing, the base is disposed below the internal space of the housing and has a second drain hole for draining drain water generated in the heat exchanger to the outside of the housing, the base is disposed between the heat exchanger and the base in the vertical direction so that the heat exchanger and the base do not come into contact with each other, and the base has an inner edge which is one end edge in the short direction of the base and is disposed on the internal space side of the housing, and the inner edge a side rib portion provided on an edge of the housing, having a long plate-like shape extending in the longitudinal direction of the base, and erected upward from the inner end edge; and a notch portion provided on an upper end of the side rib portion, disposed corresponding to the position of the groove portion in the longitudinal direction of the base, and recessed downward from the upper end of the side rib portion, wherein the water conducting surface portion and the notch portion form a second drainage path through which the drain water flows toward the base disposed inside the housing through the water conducting surface portion and the notch portion when the first drainage hole freezes. It is something. [Effects of the Invention]

[0012] The heat exchanger support device according to the present disclosure allows drain water to flow down the water-conducting surface disposed inside the groove and be discharged to the outside through the first drainage hole made of resin, allowing drain water from the heat exchanger to be drained without coming into contact with the base. This prevents damage to the heat exchanger caused by drain water freezing on the base. Furthermore, because the heat exchanger support device is made of resin and is disposed between the steel base and the aluminum heat exchanger, it is possible to suppress the occurrence of bimetallic corrosion. [Brief explanation of the drawings]

[0013] [Figure 1]1 is a perspective view showing a configuration of a heat exchanger supporting device 100 according to a first embodiment. [Figure 2] 1 is an exploded perspective view showing the configuration of a heat exchanger supporting device 100 according to a first embodiment. [Figure 3] 1 is a perspective view showing the configuration of a base 101 provided in a heat exchanger supporting device 100 according to the first embodiment. [Figure 4] 2 is a partially enlarged perspective view showing the configuration of a base 101 provided in the heat exchanger supporting device 100 according to the first embodiment. FIG. [Figure 5] 1 is a schematic plan view showing a configuration of a base 101 provided in a heat exchanger supporting device 100 according to a first embodiment. [Figure 6] 3 is a perspective cross-sectional view showing the configuration of a groove 103 provided in the heat exchanger supporting device 100 according to the first embodiment. FIG. [Figure 7] 3 is a cross-sectional view showing the configuration of a groove 103 provided in the heat exchanger supporting device 100 according to the first embodiment. FIG. [Figure 8] FIG. 2 is a perspective view showing the appearance of an outdoor unit 401 according to the first embodiment. [Figure 9] 3 is a perspective view showing the configuration of a base 301 arranged inside a housing 300 of an outdoor unit 401 according to the first embodiment. FIG. [Figure 10] FIG. 4 is a partially enlarged perspective view showing the configuration of a lower part of an outdoor unit 401 according to the first embodiment. [Figure 11] FIG. 4 is an exploded perspective view showing the configuration of a lower part of an outdoor unit 401 according to the first embodiment. [Figure 12] 1 is a perspective view showing the configuration of a base 301 and a heat exchanger supporting device 100 according to the first embodiment. [Figure 13] 3 is a partial perspective view showing a first drainage path P1 in the heat exchanger supporting device 100 according to the first embodiment. FIG. [Figure 14] 4 is a partial perspective view showing a second drainage path P2 in the heat exchanger support device 100 according to the first embodiment. FIG. [Figure 15] 4 is a partial perspective view showing a second drainage path P2 in the heat exchanger support device 100 according to the first embodiment. FIG. [Figure 16] 10 is a partial perspective view showing a third drainage path P3 in the heat exchanger support device 100 according to the first embodiment. FIG. [Figure 17] 10 is a partial perspective view showing a third drainage path P3 in the heat exchanger support device 100 according to the first embodiment. FIG. [Figure 18] 10 is a partial perspective view showing a third drainage path P3 in the heat exchanger support device 100 according to the first embodiment. FIG. [Figure 19] 10 is a partial perspective view showing a fourth drainage path P4 in the heat exchanger support device 100 according to the first embodiment. FIG. [Figure 20] 10 is a cross-sectional view showing a fourth drainage path P4 in the heat exchanger support device 100 according to the first embodiment. FIG. [Figure 21] 2 is a perspective view showing the configuration of a mounting portion 109 provided on the heat exchanger supporting device 100 according to the first embodiment. FIG. [Figure 22] FIG. 3 is an exploded perspective view showing an example of the configuration of a heat exchanger 304 provided in the air conditioning apparatus 400 according to the first embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0014] Embodiments of a heat exchanger support device according to the present disclosure will be described below with reference to the drawings. The present disclosure is not limited to the following embodiments and can be modified in various ways without departing from the spirit and scope of the present disclosure. Furthermore, the present disclosure includes all possible combinations of the configurations shown in the following embodiments and their modifications. In each drawing, identical symbols denote identical or equivalent components, and this applies throughout the specification. Note that the relative dimensional relationships or shapes of the components in each drawing may differ from the actual ones. In each drawing, the Z direction indicates the up-down direction. The Z direction is, for example, the vertical direction. The X direction is a direction intersecting the Z direction and indicates the longitudinal direction of the heat exchanger support device. The X direction is, for example, the horizontal direction. The X direction is sometimes referred to as the width direction of the heat exchanger. The Y direction is a direction intersecting the Z direction and the X direction and indicates the lateral direction of the heat exchanger support device. The Y direction is, for example, the horizontal direction. The Y direction is sometimes referred to as the depth direction of the heat exchanger.

[0015] Embodiment 1 (Configuration of heat exchanger support device 100) The configuration of the heat exchanger support device 100 according to the first embodiment will be described with reference to Figs. 1 to 5. Fig. 1 is a perspective view showing the configuration of the heat exchanger support device 100 according to the first embodiment. Fig. 2 is an exploded perspective view showing the configuration of the heat exchanger support device 100 according to the first embodiment. Fig. 3 is a perspective view showing the configuration of a base 101 provided in the heat exchanger support device 100 according to the first embodiment. Fig. 4 is a partially enlarged perspective view showing the configuration of the base 101 provided in the heat exchanger support device 100 according to the first embodiment. Fig. 5 is a schematic plan view showing the configuration of the base 101 provided in the heat exchanger support device 100 according to the first embodiment.

[0016] The heat exchanger support device 100 according to the first embodiment supports a heat exchanger 304 (see FIG. 6) housed inside an outdoor unit 401 (see FIG. 8) of an air conditioning apparatus 400 (see FIG. 8). The heat exchanger support device 100 is made of resin. As shown in FIG. 8, which will be described later, the heat exchanger support device 100 is provided below a side surface 300a of a housing 300 of the outdoor unit 401. Therefore, in FIGS. 1 to 5, the Y direction Y1 is the direction from the inside to the outside of the housing 300, and the Y direction Y2 is the direction from the outside to the inside of the housing 300. Therefore, FIGS. 1 and 2 show the heat exchanger support device 100 viewed from the outside to the inside. Meanwhile, FIGS. 3 and 4 show the heat exchanger support device 100 viewed from the inside to the outside. The heat exchanger support device 100 is arranged between a heat exchanger 304 (see Figure 6) housed inside the housing 300 and a base 301 (described later) arranged below the heat exchanger 304 inside the housing 300.

[0017] As shown in FIGS. 1 to 5, the heat exchanger support device 100 includes a base 101 having a main surface 102, a groove 103, a first drain hole 104, and a water guide surface 105.

[0018] The base 101 constitutes the main body of the heat exchanger support device 100. The base 101 has a long, flat plate shape. The base 101 has an inner edge 101a, which is one edge in the short direction of the base 101, and an outer edge 101b, which is the other edge in the short direction. Both the inner edge 101a and the outer edge 101b extend in the longitudinal direction of the base 101. When the heat exchanger support device 100 is attached to the housing 300 of the outdoor unit 401, the inner edge 101a is disposed on the interior space side of the housing 300 (see FIG. 8), and the outer edge 101b is disposed on the exterior side of the housing 300 (see FIG. 8). The base 101 also has a flat main surface portion 102. The main surface portion 102 will be described later. Furthermore, the base 101 has a side flat portion 112, as shown in FIGS. 4 and 5. The side flat portion 112 is provided on the outer edge 101b and extends in the X direction. The side flat portion 112 is arranged horizontally so as to be parallel to the XY plane. The Z-direction position of the side flat portion 112, i.e., its height position, may be the same as or different from the Z-direction position of the upper end portion 106a of the side rib portion 106, which will be described later.

[0019] The groove 103 is formed in the main surface 102 of the base 101. The groove 103 is a recess that is recessed downward from the main surface 102. The groove 103 extends in the short direction of the base 101. As shown in FIG. 2, the groove 103 has a first end 103a that is one end of the groove 103 in the extending direction, and a second end 103b that is the other end in the extending direction. The first end 103a is located closer to the inner edge 101a of the base 101, and the second end 103b is located closer to the outer edge 101b of the base 101. As shown in FIG. 2, a plurality of grooves 103 are arranged at intervals from each other in the longitudinal direction of the base 101.

[0020] As shown in Fig. 2, the first drainage hole 104 is disposed at the first end 103a of the groove portion 103. The first drainage hole 104 is configured as a through-hole that penetrates the plate thickness of the groove portion 103. As shown in Figs. 2 and 5, the first drainage hole 104 has, for example, a rectangular shape in plan view.

[0021] The water conducting surface portion 105 is formed inside the groove portion 103. The water conducting surface portion 105 descends stepwise or continuously from the second end portion 103b of the groove portion 103 toward the first drainage hole 104. That is, as shown in FIG. 3, the water conducting surface portion 105 has a step portion 1051 that descends stepwise from the second end portion 103b of the groove portion 103 toward the first drainage hole 104. Alternatively, the water conducting surface portion 105 has an inclined surface portion 1052 (see FIG. 7) that descends continuously from the second end portion 103b of the groove portion 103 toward the first drainage hole 104. Note that the water conducting surface portion 105 may be configured by combining the step portion 1051 and the inclined surface portion 1052. That is, the step portion 1051 may have the inclined surface portion 1052. In the first embodiment, an example will be described in which the step portion 1051 has an inclined surface portion 1052. A specific description will be given below.

[0022] FIG. 6 is a perspective cross-sectional view showing the configuration of the groove 103 provided in the heat exchanger support device 100 according to the first embodiment. FIG. 6 shows a cross-section of the groove 103 of the heat exchanger support device 100 taken along an imaginary plane parallel to the YZ plane. As shown in FIG. 6, a water conducting surface 105 is formed inside the groove 103. Drain water generated and collected on the heat exchanger surface flows on the water conducting surface 105 as indicated by the arrows in FIG. 6. As shown in FIG. 6, the water conducting surface 105 has a step 1051. In the example shown in FIG. 6, the step 1051 descends in two steps from the second end 103b of the groove 103 toward the first drain hole 104. The number of steps in the step 1051 is not limited to two and may be determined as appropriate.

[0023] FIG. 7 is a cross-sectional view showing the configuration of the groove portion 103 provided in the heat exchanger support device 100 according to the first embodiment. As shown in FIG. 7, the water guide surface portion 105 has an inclined surface portion 1052. The inclined surface portion 1052 continuously descends from the second end portion 103b of the groove portion 103 toward the first drainage hole 104. In the example of FIG. 7, a step is provided in the inclined surface portion 1052 by the stepped portion 1051, but such a step need not be provided. In other words, the inclined surface portion 1052 may be composed of a single inclined surface.

[0024] In the example shown in FIG. 7, the inclined surface portion 1052 has a first inclined surface portion 1052a, a second inclined surface portion 1052b, and a third inclined surface portion 1052c. The first inclined surface portion 1052a continuously descends at a first inclination angle α1 as it progresses from the second end portion 103b (see FIG. 5) toward the first end portion 103a (see FIG. 5). The second inclined surface portion 1052b is disposed closer to the first end portion 103a than the first inclined surface portion 1052a. In other words, the second inclined surface portion 1052b is disposed closer to the first end portion 103a than the first inclined surface portion 1052a. The second inclined surface portion 1052b continuously descends at a second inclination angle α2 as it progresses from the second end portion 103b (see FIG. 5) toward the first end portion 103a (see FIG. 5). The third inclined surface portion 1052c connects the first inclined surface portion 1052a and the second inclined surface portion 1052b. The third inclined surface portion 1052c continuously slopes downward at a third inclination angle α3 from the second end portion 103b (see FIG. 5) toward the first end portion 103a (see FIG. 5). The third inclined surface portion 1052c is greater than the first inclined angle α1 and the second inclined angle α2. That is, the third inclined surface portion 1052c has the steepest slope shape. The first inclined angle α1 is equal to or greater than the second inclined angle α2. Specifically, for example, the first inclined angle α1 is approximately 4 to 5°, the second inclined angle α2 is approximately 3 to 4°, and the third inclined angle α3 is approximately 60°. Note that these numerical values ​​are merely examples and are not limited to these values.

[0025] In the above description of the step portion 1051, it was described that the step portion 1051 has two steps. Using the example of FIG. 7, the step of the third inclined surface portion 1052c extending from the first inclined surface portion 1052a to the second inclined surface portion 1052b is the first step. Also, as shown in FIG. 6, the step 1052d extending from the second inclined surface portion 1052b to the first drain hole 104 is the second step. In this manner, in the first embodiment, the step portion 1051 and the inclined surface portion 1052 are combined to form the water guide surface portion 105. By providing one or more inclined surface portions 1052 in the step portion 1051, the flow rate of the drain water is increased, allowing the drain water to be drained quickly. In the first embodiment, a steep third inclined surface portion 1052c is provided in the center of the step portion 1051 in the Y direction. Therefore, even if the flow rate of the drain water at the first inclined surface portion 1052a temporarily slows down due to the influence of accumulated garbage or the like, it speeds up again at the third inclined surface portion 1052c. Then, the drain water continues to flow down toward the second inclined surface portion 1052b, so that the drain water can be prevented from accumulating on the water conducting surface portion 105 without flowing away.

[0026] As shown in FIG. 4, the heat exchanger support device 100 includes a side rib portion 106. As shown in FIGS. 2 and 3, the side rib portion 106 is provided on the inner edge 101a of the base 101. The side rib portion 106 has a long plate shape extending in the longitudinal direction of the inner edge 101a of the base 101. The side rib portion 106 stands upright from the inner edge 101a toward the upper side in the Z direction. As shown in FIG. 3, the side rib portion 106 has a corrugated shape with projections and depressions in a side view. That is, only in the portion where the groove portion 103 of the base 101 is provided, the side rib portion 106 has a convex portion that protrudes downward, and the other portion of the side rib portion 106 has a long rectangular shape extending in the X direction. Thus, the side rib portion 106 has a convex portion arranged corresponding to the position of the groove portion 103 in the longitudinal direction of the base portion 101, and a rectangular flat portion arranged between the convex portions.

[0027] 4, notches 107 are formed in the side rib portion 106. The notches 107 are provided in the upper end portion 106a of the side rib portion 106. As shown in FIGS. 2 to 4, a plurality of the notches 107 are arranged corresponding to the positions of the grooves 103 in the longitudinal direction of the base 101. The notches 107 are recessed downward in the Z direction from the upper end portion 106a of the side rib portion 106.

[0028] As shown by the arrows in FIG. 6 , drain water normally flows along first drainage path P1, through water conducting surface portion 105, and toward first drainage hole 104. As shown in FIG. 6 , first drainage hole 104 is disposed corresponding to second drainage hole 302 formed in base 301, which will be described later. First drainage hole 104 is disposed directly above second drainage hole 302, or is disposed inside second drainage hole 302 and at the same height as second drainage hole 302. Therefore, water conducting surface portion 105 and first drainage hole 104 form first drainage path P1 along which drain water flows. In first drainage path P1, drain water passes through water conducting surface portion 105 and first drainage hole 104 without coming into contact with base 301, and is discharged directly to the outside of housing 300 of outdoor unit 401.

[0029] However, drain water may freeze near first drain hole 104, blocking first drain hole 104 with the frozen drain water. In this case, as shown by the arrows in FIG. 15 (described later), drain water passes through water guide surface 105 and then flows through notches 107 formed in side rib portion 106. Therefore, water guide surface 105 and notches 107 form second drainage path P2 when first drain hole 104 freezes. In second drainage path P2, drain water passes through water guide surface 105 and notches 107 and flows toward base 301 disposed inside housing 300. Then, from base 301, drain water flows toward the outside of housing 300 of outdoor unit 401 and is discharged.

[0030] 1 and 2, the heat exchanger support device 100 is provided with a heat exchanger protection wall 200. The heat exchanger protection wall 200 is provided on the outer edge 101b in the short direction of the base 101. The heat exchanger protection wall 200 has a long plate shape extending in the longitudinal direction of the outer edge 101b of the base 101. The heat exchanger protection wall 200 stands upright from the outer edge 101b upward in the Z direction. Therefore, the heat exchanger protection wall 200 and the side rib portion 106 face each other.

[0031] As shown in FIG. 6, the heat exchanger 304 has a heat exchanger header 307 connected to the lower ends of the multiple heat transfer tubes 305. The heat exchanger header 307 functions as a liquid header or a gas header. As shown in FIG. 6, the heat exchanger protective wall 200 is disposed on the exterior side of the housing 300 (see FIG. 8) of the outdoor unit 401 (see FIG. 8) relative to the heat exchanger header 307. That is, as shown in FIG. 6, the heat exchanger protective wall 200 is disposed outside the heat exchanger header 307 so as to cover the heat exchanger header 307. However, the heat exchanger protective wall 200 and the heat exchanger header 307 are not in contact with each other, but are disposed apart from each other via a gap. The heat exchanger protective wall 200 also has an upper bent portion 202 at its upper end. The upper bent portion 202 is inclined from the Z direction toward the heat exchanger 304 as it approaches the tip. The upper bent portion 202 is bent to conform to the outer shape of the upper end of the heat exchanger header 307 and covers the upper end of the heat exchanger header 307 from above. However, the upper bent portion 202 and the upper end of the heat exchanger header 307 are not in contact with each other and are spaced apart from each other via a gap. In this manner, the heat exchanger protective wall 200 is disposed to cover the heat exchanger header 307. Therefore, the heat exchanger protective wall 200 prevents damage to the heat exchanger header 307 caused by foreign objects such as pebbles striking the heat exchanger header 307. Furthermore, because the heat exchanger protective wall 200 is disposed outside the heat exchanger header 307, it also functions as a windbreak for the heat exchanger header 307. Therefore, the heat exchanger protective wall 200 can prevent the heat exchanger header 307 from freezing due to wind blowing against the heat exchanger header 307. Furthermore, by providing the heat exchanger protective wall 200, outside air is drawn into the outdoor unit 401 from the side surface 300a of the housing 300 for heat exchange in the heat exchanger 304. At this time, if the heat exchanger protective wall 200 were not provided, outside air would also be drawn in from below the housing 300. This outside air would not be used for heat exchange, and the heat exchange efficiency of the heat exchanger 304 would decrease. In the first embodiment, by providing the heat exchanger protective wall 200, it is possible to prevent a decrease in heat exchange efficiency. The heat exchanger protective wall 200 can also prevent insects from entering the housing 300.

[0032] As shown in FIG. 2, the heat exchanger protective wall 200 has a drain gate 201. The drain gate 201 is provided at the lower end of the heat exchanger protective wall 200. The drain gate 201 is formed so as to be recessed upward in the Z direction from the lower end 200a of the heat exchanger protective wall 200. The drain gate 201 is a long, narrow slit-shaped gap whose longitudinal direction extends in the X direction. The drain gate 201 forms a fourth drain path P4 (described later) for discharging drain water. The drain gate 201 is formed to a size that allows water to pass through but prevents pebbles, wind, insects, etc. from entering.

[0033] The heat exchanger protective wall 200 is made of resin. The heat exchanger protective wall 200 may be integrally molded with the base 101 or the like as a part of the heat exchanger support device 100. Alternatively, the heat exchanger protective wall 200 may be formed separately from the base 101 or the like and attached to the base 101, as shown in the exploded perspective view of FIG. 2 .

[0034] The base 101, main surface 102, groove 103, first drainage hole 104, water guide surface 105, side rib 106, notch 107, and protrusion 108 (described later) are integrally molded from resin.

[0035] (Configuration of outdoor unit 401) The configuration of the outdoor unit 401 of the air conditioning apparatus 400 will be described using Figs. 8 to 12. Fig. 8 is a perspective view showing the appearance of the outdoor unit 401 according to the first embodiment. Fig. 9 is a perspective view showing the configuration of the base 301 arranged inside the housing 300 of the outdoor unit 401 according to the first embodiment. Fig. 10 is a partially enlarged perspective view showing the configuration of the lower part of the outdoor unit 401 according to the first embodiment. Fig. 11 is an exploded perspective view showing the configuration of the lower part of the outdoor unit 401 according to the first embodiment. Fig. 12 is a perspective view showing the configuration of the base 301 and the heat exchanger support device 100 according to the first embodiment.

[0036] As shown in FIG. 8, the outdoor unit 401 of the air conditioning apparatus 400 includes a housing 300. The housing 300 has, for example, a rectangular parallelepiped shape. The housing 300 has four side surfaces 300a and a top surface 300b. The heat exchanger support device 100 is attached to the underside of at least one of the four side surfaces 300a of the housing 300. The side surface 300a to which the heat exchanger support device 100 is attached is sometimes referred to as the front surface of the outdoor unit 401.

[0037] A blower fan 308 is provided at an upper portion inside the housing 300. In the example of FIG. 8, the outdoor unit 401 has two heat exchangers 304 (see FIG. 6) and two blower fans 308, but this is not limiting. The outdoor unit 401 may have one heat exchanger 304 and one blower fan 308. When two heat exchangers 304 are housed in the housing 300, the heat exchangers 304 are arranged side by side in the X direction. Similarly, when two blower fans 308 are housed in the housing 300, the blower fans 308 are arranged side by side in the X direction, as shown in FIG. 8. When the blower fans 308 are driven to rotate, outside air is drawn into the housing 300 from the side surface 300a of the housing 300. The heat exchanger 304 exchanges heat between the drawn outside air and the refrigerant flowing through the heat transfer tubes 305. The outside air that has exchanged heat with the refrigerant is exhausted to the outside from the upper surface 300b of the housing 300.

[0038] A heat exchanger 304 (see FIG. 6) is housed inside the housing 300. The heat exchanger 304 has heat transfer tubes 305 and fins 306 (see FIG. 22). The heat exchanger 304 is, for example, a fin-and-tube heat exchanger. FIG. 22 is an exploded perspective view showing an example of the configuration of the heat exchanger 304 provided in the air conditioning apparatus 400 according to Embodiment 1. As shown in FIGS. 6 and 22, the heat transfer tubes 305 have a tube axis extending in the vertical direction, i.e., the Z direction. The heat transfer tubes 305 are, for example, flat tubes. As shown in FIG. 22, a plurality of the heat transfer tubes 305 are arranged at intervals from each other in the X direction. The flat surfaces of the heat transfer tubes 305 are arranged parallel to the YZ plane, and the flat surfaces of adjacent heat transfer tubes 305 face each other. In the example shown in FIGS. 6 and 22, the heat transfer tubes 305 are arranged in two rows in the Y direction. A heat exchanger header 307 is provided for each row. The number of rows of the heat transfer tubes 305 is not limited to two. That is, the number of rows of the heat transfer tubes 305 may be any number equal to or greater than one. The fins 306 are, for example, corrugated fins, but are not limited to this. When the fins 306 are corrugated fins, they are disposed between adjacent heat transfer tubes 305 as shown in FIG. 22. When the fins 306 are flat fins, the fins 306 are disposed at intervals in a direction intersecting the axial direction of the heat transfer tubes 305. The heat transfer tubes 305 are disposed so as to penetrate the fins 306. As shown in FIG. 6, a heat exchanger header 307 is connected to the lower end of the heat transfer tube 305.

[0039] As shown in FIG. 8, the heat exchanger support device 100 is attached to a lower side surface 300a of the housing 300. In the example of FIG. 8, one heat exchanger support device 100 is attached to the housing 300, but this is not limiting. That is, since two heat exchangers 304 are provided inside the housing 300, two heat exchanger support devices 100 may be attached to the housing 300 corresponding to the heat exchangers 304. As shown in the perspective view of FIG. 10 and the exploded perspective view of FIG. 11, the heat exchanger support device 100 has a base 101 disposed inside the housing 300. An inner edge 101a (see FIG. 1) of the base 101 is disposed in the internal space of the housing 300. An outer edge 101b (see FIG. 1) of the base 101 is also disposed in the internal space of the housing 300, but is disposed outside the housing 300 relative to the inner edge 101a. The inner edge 101a and the outer edge 101b face each other as shown in Fig. 5. On the other hand, the heat exchanger protection wall 200 is disposed in the same plane as the side surface 300a of the housing 300 and is exposed to the outside.

[0040] As shown in FIG. 8, a base leg 303 is disposed below the housing 300. The base leg 303 is a support member that supports the base 301 (see FIG. 9) disposed below the internal space of the housing 300. As shown in FIG. 6, the main body 303a of the base leg 303 has an angular U-shape in side view, and opens toward the outside of the housing 300. An attachment portion 303b is provided on the upper edge of the main body 303a of the base leg 303. The attachment portion 303b extends upward in the Z direction from the upper edge of the main body 303a. A screw hole is formed in the attachment portion 303b. By inserting a bolt into the screw hole and tightening the bolt with a nut, the heat exchanger protection wall 200 is fixed to the base leg 303, as shown in FIG. 6. A leg cover 303c (see FIG. 18) is provided at the opening of the angular U-shaped main body 303a, as needed. The leg cover 303c can prevent foreign objects such as pebbles from entering the inside of the base leg 303.

[0041] 6, 10, and 11, the heat exchanger support device 100 is disposed so that the longitudinal direction of the base 101 is parallel to the width direction of the heat exchanger 304. Here, the width direction of the heat exchanger 304 is the stacking direction of the heat transfer tubes 305, which is the X direction. Furthermore, the heat exchanger support device 100 is disposed so that the lateral direction of the base 101 is parallel to the depth direction of the heat exchanger 304. Here, the depth direction of the heat exchanger 304 is the direction intersecting the stacking direction of the heat transfer tubes 305, which is specifically the Y direction.

[0042] As shown in FIG. 6, the length in the Y direction of the installation area 309 of the heat exchanger 304 is defined as "length L1," and as shown in FIG. 5, the length in the Y direction of the base 101 of the heat exchanger support device 100 is defined as "length L2." In this case, the length L2 in the Y direction of the base 101 is longer than the length L1 in the Y direction of the installation area 309 of the heat exchanger 304. In this way, the length L2 in the short side direction of the base 101 of the heat exchanger support device 100 is longer than the length L1, which is the total length in the depth direction of the heat exchanger 304. Here, the installation area 309 of the heat exchanger 304 refers to the area where the heat transfer tubes 305 and the heat exchanger header 307 of the heat exchanger 304 are installed.

[0043] Furthermore, the longitudinal length L3 (see FIG. 3) of the base 101 of the heat exchanger support device 100 is equal to or longer than the length L4 (see FIG. 22), which is the total length in the X direction of the installation area 309 (see FIG. 22) of the heat exchanger 304. Thus, the longitudinal length L3 of the base 101 of the heat exchanger support device 100 is longer than the length L4, which is the total length in the width direction of the heat exchanger 304. Note that in the example of FIG. 8, two heat exchangers 304 are arranged in the housing 300. In this way, when there are multiple heat exchangers 304, the X-direction length L4 of the installation area 309 (see FIG. 22) of the heat exchanger 304 is the sum of the X-direction lengths of all the heat exchangers 304 housed in the housing 300, as shown in FIG. 8.

[0044] In this way, the base 101 is disposed so as to cover the entire lower surface of the heat exchanger 304, including the heat exchanger header 307. Therefore, the base 101 can receive all of the drain water that flows down along the surface of the heat transfer tubes 305.

[0045] A base 301 is disposed below the internal space of the housing 300 of the outdoor unit 401. As shown in FIG. 6 , the base 301 is disposed on base legs 303. A base 101 of the heat exchanger support device 100 is disposed above the base 301. Therefore, the base 101 is disposed between the heat exchanger header 307 provided on the heat exchanger 304 and the base 301 in the Z direction. As described above, the heat exchanger support device 100 is made of resin. The heat exchanger header 307 is made of aluminum, and the base 301 is made of steel. Therefore, when the heat exchanger header 307 and the base 301 are in contact with each other, galvanic corrosion occurs. Galvanic corrosion is a phenomenon in which corrosion occurs when metals with a potential difference come into contact with each other and electrons are exchanged between the dissimilar metals. Therefore, in the first embodiment, the resin heat exchanger support device 100 is disposed between the heat exchanger header 307 and the base 301. This makes it possible to suppress the occurrence of dissimilar metal corrosion.

[0046] As shown in FIGS. 9 and 12 , the base 301 has a rectangular shape in a plan view. The base 301 is made of a corrugated steel plate. By processing the base to have a corrugated shape, drain water flows more easily over the base and the base is strengthened against bending and flexural deformation. The base 301 has raised portions 301a at both ends in the X direction. The raised portions 301a are formed by bending the side edges of the base 301 at both ends in the X direction upward in the Z direction. The base 301 also has a second drain hole 302 that drains drain water generated by melting frost during defrosting operation to the outside of the housing 300, and a drain groove 310 that guides the drain water to the second drain hole 302. The base 301 also has a front edge 301b that constitutes one side edge in the Y direction and a back edge 301c that constitutes the other side edge in the Y direction. The second drainage holes 302 are formed closer to the front edge 301b than the center in the Y direction. The second drainage holes 302 are arranged in the vicinity of the front edge 301b. A plurality of the second drainage holes 302 are arranged at intervals in the X direction. The drainage grooves 310 extend in the Y direction. The drainage grooves 310 are arranged corresponding to the second drainage holes 302.

[0047] As described above, the first drainage hole 104 formed in the heat exchanger support device 100 is positioned directly above the second drainage hole 302 in the base 301. Alternatively, the first drainage hole 104 is positioned inside the second drainage hole 302 in the base 301 and at the same height as the second drainage hole 302, as shown in FIG. 6 . Therefore, the first drainage hole 104 formed in the heat exchanger support device 100 is positioned corresponding to the position of the second drainage hole 302 in the base 301. The opening area of ​​the first drainage hole 104 is smaller than the opening area of ​​the second drainage hole 302. Therefore, the first drainage hole 104 can be positioned so as to fit inside the second drainage hole 302 when viewed from above. As a result, as shown by the arrows in Figure 6, drain water passing through the water-conducting surface portion 105 and the first drainage hole 104 according to the first drainage path P1 is drained directly from the first drainage hole 104 to the outside of the housing 300 without coming into contact with the second drainage hole 302 and the base 301.

[0048] In this way, by arranging the first drain hole 104 made of resin directly above or inside the second drain hole 302 of the base 301, drain water can be drained directly from the first drain hole 104 to the outside of the housing 300 without coming into contact with the base 301. As a result, it is possible to prevent drain water from accumulating in the base 301. Therefore, the base 301 is not covered with ice, and the second drain hole 302 is not blocked by ice. Therefore, in the first embodiment, it is possible to prevent ice from growing down to the bottom of the heat exchanger as in conventional devices, and it is possible to protect the fins 306, the heat exchanger header 307, and the heat transfer tubes 305 from damage due to freezing.

[0049] (First drainage path P1) The first drainage path P1 will be described with reference to FIGS. 6 and 13. FIG. 13 is a partial perspective view showing the first drainage path P1 in the heat exchanger support device 100 according to the first embodiment. FIG. 13 shows a cross section of the water-conducting surface portion 105 of the heat exchanger support device 100 cut along an imaginary plane parallel to the XZ plane. Therefore, the side rib portion 106 is not shown in FIG. 13. FIG. 13 also shows the heat exchanger support device 100 as seen from the internal space side of the housing 300. The drainage water first flows down the surfaces of the heat transfer tubes 305 whose tube axes extend in the Z direction. The drainage water is then received by the base 101 of the heat exchanger support device 100. As described above, the base 101 is provided with the main surface portion 102. As will be described in detail with reference to FIG. 4 in the description of the second drainage path P2 below, the main surface portion 102 has a first main surface portion 102a (see FIG. 4) and a second main surface portion 102b (see FIG. 4). The first main surface portion 102a and the second main surface portion 102b are each inclined so as to decrease in height toward the groove portion 103. Therefore, the drain water received by the main surface portion 102 of the base 101 flows toward the groove portion 103 in the X direction due to the inclination of the first main surface portion 102a and the second main surface portion 102b in the X direction. Then, the drain water that has flowed down into the groove portion 103 flows along the water conducting surface portion 105 arranged in the groove portion 103 and reaches the first drainage hole 104, as shown in FIGS. 6 and 13. The drain water is then drained directly to the outside of the housing 300 through the first drain hole 104 without coming into contact with the second drain hole 302 and the base 301.

[0050] (Second drainage path P2) Next, the second drainage path P2 will be described with reference to Figures 14 and 15. Figure 14 is a partial perspective view showing the second drainage path P2 in the heat exchanger support device 100 according to embodiment 1. Figure 14 shows the heat exchanger support device 100 as seen from the internal space side of the housing 300. Figure 15 is a partial perspective view showing the second drainage path P2 in the heat exchanger support device 100 according to embodiment 1.

[0051] The second drainage path P2 is a drainage path when the first drainage hole 104 freezes. When the first drainage hole 104 freezes, drain water flows through the main surface portion 102, the water guide surface portion 105, and the notch portion 107 of the heat exchanger support device 100, as shown by the arrows in Figures 14 and 15. This will be explained in detail below.

[0052] First, the main surface portion 102 will be described using FIG. 4 described above. The main surface portion 102 provided on the base 101 of the heat exchanger support device 100 has a first main surface portion 102a and a second main surface portion 102b. As shown in FIG. 4, the first main surface portion 102a and the second main surface portion 102b are arranged at both ends of the groove portion 103 in the longitudinal direction of the base 101. As shown in FIG. 4, the first main surface portion 102a and the second main surface portion 102b are each inclined downward in the longitudinal direction of the base 101 as they approach the groove portion 103. As shown in FIG. 4, the main surface portion 102 is provided with a protrusion 108. The heat exchanger header 307 is placed on the protrusion 108 and supports the heat exchanger header 307. The main surface 108a of the protrusion 108 is not inclined but is installed horizontally.

[0053] The first main surface portion 102a is disposed between the position of the convex portion 108 and the position of the groove portion 103. More specifically, the starting point of the first main surface portion 102a corresponds to the center of the convex portion 108 in the X direction. The end point of the first main surface portion 102a is one end of the groove portion 103 in the X direction. The first main surface portion 102a is inclined downward from the starting point to the end point.

[0054] Similarly, the second main surface portion 102b is disposed between the position of the convex portion 108 and the position of the groove portion 103. More specifically, the starting point of the second main surface portion 102b corresponds to the center of the convex portion 108 in the X direction. The end point of the second main surface portion 102b is the other end of the groove portion 103 in the X direction. The second main surface portion 102b is inclined downward from the starting point to the end point.

[0055] Therefore, the drain water received by the main surface portion 102 flows in the X direction toward the groove portion 103 due to the inclination of the first main surface portion 102a and the second main surface portion 102b in the X direction. Then, the drain water that flows down into the groove portion 103 passes through the water conducting surface portion 105 and flows from the notch portion 107 toward the base 301.

[0056] Furthermore, each of the first main surface portion 102a and the second main surface portion 102b is inclined not only in the X direction but also in the Y direction. That is, taking the second main surface portion 102b as an example with reference to FIG. 7 described above, the second main surface portion 102b is inclined downward in the direction from the second end 103b to the first end 103a of the groove portion 103. Similarly, the first main surface portion 102a is inclined downward in the direction from the second end 103b to the first end 103a of the groove portion 103.

[0057] Therefore, the drain water received by the main surface portion 102 flows in the Y direction toward the first end portion 103a of the groove portion 103 due to the inclination in the Y direction of each of the first main surface portion 102a and the second main surface portion 102b. Then, the drain water that flows down into the groove portion 103 passes through the water conducting surface portion 105 and flows from the notch portion 107 toward the base 301.

[0058] In this way, the first main surface portion 102a and the second main surface portion 102b are inclined in the X direction and in the Y direction, so that the drain water flows efficiently toward the first drainage hole 104 in the groove portion 103.

[0059] Therefore, in the second drainage path P2, the drain water received by the main surface portion 102 of the heat exchanger support device 100 flows through the water guide surface portion 105 and the notch portion 107, as shown by the arrow in FIG.

[0060] In this way, when the first drainage hole 104 freezes, the water guide surface portion 105 and the notch portion 107 form the second drainage path P2.

[0061] (Third drainage route P3) The third drainage path P3 will be described with reference to Figures 16 to 18. Figure 16 is a partial perspective view showing the third drainage path P3 in the heat exchanger support device 100 according to embodiment 1. Figure 16 shows the heat exchanger support device 100 as seen from the exterior side of the housing 300. Figure 17 is a partial perspective view showing the third drainage path P3 in the heat exchanger support device 100 according to embodiment 1. Figure 18 is a partial perspective view showing the third drainage path P3 in the heat exchanger support device 100 according to embodiment 1.

[0062] The third drainage path P3 is a drainage path when the first drainage holes 104 and the notches 107 freeze. When the first drainage holes 104 and the notches 107 freeze, as shown by the arrows in Figures 16 to 18, the drain water passes through the water guide surface portion 105 and then flows over the upper end portion 106a of the side rib portion 106. This will be explained in detail below.

[0063] 16 to 18, the upper end 106a of the side rib portion 106 is disposed at a position lower than the installation height at which the heat exchanger 304 is installed. More specifically, as shown in Fig. 18, the upper end 106a of the side rib portion 106 is disposed at a position lower than the installation height at which the heat exchanger header 307 of the heat exchanger 304 is installed. Therefore, as shown by the arrows in Figs. 16 and 17, in the third drainage path P3, the drain water passes through the water conducting surface portion 105, then exceeds the upper end 106a of the side rib portion 106, and flows toward the base 301 disposed inside the housing 300.

[0064] In this way, when the first drainage holes 104 and the notches 107 freeze, the water guide surface 105 and the upper end 106a of the side rib 106 form the third drainage path P3, which prevents the heat exchanger header 307 from being submerged (immersed) in the drain water.

[0065] (4th drainage path P4) The fourth drainage path P4 will be described with reference to Figures 19 and 20. Figure 19 is a partial perspective view showing the fourth drainage path P4 in the heat exchanger support device 100 according to embodiment 1. Figure 20 is a cross-sectional view showing the fourth drainage path P4 in the heat exchanger support device 100 according to embodiment 1.

[0066] The fourth drainage path P4, like the third drainage path P3, is a drainage path when the first drainage hole 104 and the notch 107 freeze. When the first drainage hole 104 and the notch 107 freeze, drain water flows toward the outside of the housing 300 through the main surface 102 of the base 101 and the drainage gate 201 of the heat exchanger protection wall 200, as shown by the arrows in Figures 19 and 20. This will be explained in detail below.

[0067] As described above, the drain gate 201 is provided at the lower end of the heat exchanger protective wall 200. The drain gate 201 is a slit-shaped elongated gap, as shown in Fig. 2. The drain gate 201 is formed so as to be recessed upward from the lower end 200a of the heat exchanger protective wall 200.

[0068] As shown in FIGS. 19 and 20, when the first drain hole 104 and the notch 107 freeze, the drain water flows through the drain gate 201 toward the outside of the housing 300.

[0069] In this way, when the first drain hole 104 and the notch 107 freeze, the main surface portion 102 of the base portion 101 and the drain gate 201 form a fourth drain path P4.

[0070] (Method of attaching the heat exchanger support device 100 to the base 301) A method for attaching the heat exchanger support device 100 to the base 301 will be described with reference to Fig. 21. Fig. 21 is a perspective view showing the configuration of the attachment portion 109 provided on the heat exchanger support device 100 according to embodiment 1. As shown in Fig. 21, the heat exchanger support device 100 has a plate-shaped attachment portion 109.

[0071] The mounting portion 109 is fixed to the side rib portion 106. The mounting portion 109 has a rectangular shape in a plan view. The mounting portion 109 extends in a direction intersecting the erection direction of the side rib portion 106. In other words, the mounting portion 109 extends in the Y direction intersecting the Z direction. The mounting portion 109 protrudes from the side rib portion 106 in a direction away from the base 101. The mounting portion 109 has a screw hole 110 that penetrates the plate thickness of the mounting portion 109. The mounting portion 109 is fixed to the base 301 by a screw inserted into the screw hole 110. The fastener inserted into the screw hole 110 may be a bolt and nut.

[0072] The mounting portion 109 is also provided with plate-shaped reinforcing ribs 111. The reinforcing ribs 111 are arranged at both ends of the mounting portion 109 in the longitudinal direction of the base 101. The reinforcing ribs 111 extend upward in the Z direction from both ends of the mounting portion 109 in the X direction. The reinforcing ribs 111 have a triangular or pentagonal shape in side view. Ends 111a of the reinforcing ribs 111 extending in the vertical direction are fixed to the side rib portions 106. By providing the reinforcing ribs 111 on the mounting portion 109, the strength of the mounting portion 109 is improved.

[0073] (Modification of the first drainage hole 104) As shown in FIG. 17, the first drain hole 104 may have a safety guard 113 that prevents foreign objects from entering the first drain hole 104. The foreign object here may be, for example, a user's finger. As shown in FIG. 17, the safety guard 113 has a plurality of rod-shaped members 113a fixed to both ends of the first drain hole 104 in the Y direction. The rod-shaped members 113a extend in the Y direction. The rod-shaped members 113a have, for example, a rectangular column shape, but may also have a cylindrical shape. The rod-shaped members 113a are arranged in the X direction at intervals from each other. Therefore, the safety guard 113 has a flat plate shape formed like a fence.

[0074] As shown in FIG. 17 , a heat exchanger 304 is disposed above the first drainage hole 104. More specifically, a heat exchanger header 307 of the heat exchanger 304 is disposed above the first drainage hole 104. The heat exchanger header 307 may also function as a gas header, in which case it becomes extremely hot. Therefore, a safety guard 113 may be provided on the first drainage hole 104 to prevent a user's fingers from entering the first drainage hole 104 from the outside. In this case, the safety guard 113 will prevent the user's fingers from entering the first drainage hole 104, ensuring safety.

[0075] 17 shows a case where the safety guard 113 has a flat plate shape formed like a fence, but is not limited to this case. The safety guard 113 may have a flat plate shape formed like a lattice, for example. In this case, a second rod-shaped member (not shown) is provided between two adjacent rod-shaped members 113a. The second rod-shaped member extends in the X direction from one of the two adjacent rod-shaped members 113a to the other. A plurality of second rod-shaped members are provided in the Y direction, spaced apart from one another. The second rod-shaped member has, for example, a rectangular pillar shape, but may also have a cylindrical shape. The rod-shaped member 113a and the second rod-shaped member are integrally molded from resin.

[0076] As described above, the safety guard 113 has a fence-like or lattice-like flat plate shape. The safety guard 113 is made of a heat-resistant resin such as a foamed resin. The safety guard 113 may be integrally molded from resin together with the base 101, etc., or may be configured as a separate body from the base 101, etc., and attached to the inside of the first drainage hole 104.

[0077] As described above, in the first embodiment, the heat exchanger support device 100 has the main surface portion 102, the groove portion 103, the water conducting surface portion 105, and the first drainage hole 104. Therefore, the heat exchanger support device 100 allows drain water received by the main surface portion 102 to flow down the water conducting surface portion 105 in the groove portion 103 and to be discharged to the outside of the housing 300 through the first drainage hole 104. Because the first drainage hole 104 is located directly above or inside the second drainage hole 302 provided in the base 301, the drainage water is discharged to the outside of the housing 300 without coming into contact with the base 301. This allows the drainage water from the heat exchanger 304 to be efficiently discharged, thereby preventing damage to the heat exchanger 304 due to ice.

[0078] In the first embodiment, the heat exchanger support device 100 is made of resin. The heat exchanger support device 100 is disposed between the aluminum heat exchanger header 307 and the steel base 301. Therefore, the heat exchanger support device 100 can suppress the occurrence of bimetallic corrosion.

[0079] Furthermore, in the first embodiment, a second drainage path P2 is provided for draining drain water by causing it to flow downward toward the inside of the housing 300 when the first drainage hole 104 freezes. The second drainage path P2 is configured from a notch 107 formed in the side rib portion 106 of the heat exchanger support device 100. Furthermore, in the first embodiment, a third drainage path P3 and a fourth drainage path P4 are provided for draining drain water when the first drainage hole 104 and the notch 107 freeze. The third drainage path P3 is configured by positioning the upper end 106a of the side rib portion 106 lower than the installation height of the heat exchanger 304. Furthermore, the fourth drainage path P4 is configured by providing a drainage gate 201 in the heat exchanger protection wall 200. In this way, in the first embodiment, the heat exchanger support device 100 has the cutout portion 107 for draining water inside the device, the side rib portion 106 that is lower than the installation height of the heat exchanger 304, and the drain gate 201, thereby ensuring multiple drainage paths in the event of freezing. In this way, by ensuring the drainage paths in the event of freezing, the resistance of the outdoor unit 401 to freezing is improved.

[0080] Furthermore, in the first embodiment, the heat exchanger support device 100 is provided with a heat exchanger protective wall 200. The heat exchanger protective wall 200 is disposed on the outside of the heat exchanger header 307 so as to cover the heat exchanger header 307. Therefore, the heat exchanger protective wall 200 protects the heat exchanger header 307 from damage caused by pebbles and the like, and can prevent the heat exchanger header 307 from freezing due to wind. [Explanation of symbols]

[0081] 100 Heat exchanger support device, 101 base, 101a inner edge, 101b outer edge, 102 main surface section, 102a first main surface section, 102b second main surface section, 103 groove section, 103a first end section, 103b second end section, 104 first drainage hole, 105 water guide surface section, 106 side rib section, 106a Upper end, 107 Notch, 108 Convex part, 108a Main surface, 109 Mounting part, 110 Screw hole, 111 Reinforcement rib, 111a End, 112 Side flat part, 113 Safety guard, 113a Bar member, 200 Heat exchanger protection wall, 200a Lower end, 201 Drain gate, 202 Upper bent part, 300 housing, 300a Side, 300b top surface, 301 base, 301a rising portion, 301b front edge, 301c rear edge, 302 second drain hole, 303 base leg, 303a main body, 303b mounting portion, 303c leg cover, 304 heat exchanger, 305 heat transfer tube, 306 fin, 307 heat exchanger header, 308 blower fan, 309 installation area, 310 drain groove, 400 air conditioner, 401 outdoor unit, 1051 step portion, 1052 inclined surface portion, 1052a first inclined surface portion, 1052b second inclined surface portion, 1052c third inclined surface portion, 1052d step, P1 first drain path, P2 second drain path, P3 third drain path, P4 fourth drain path, α1 1st inclination angle, α2 2nd inclination angle, α3 3rd inclination angle.

Claims

1. A heat exchanger support device that is arranged between a heat exchanger and a base arranged below the heat exchanger and is made of resin, a base portion having a long, flat plate-like shape and a flat main surface portion; a groove formed on the main surface of the base, recessed downward from the main surface, and extending in a lateral direction of the base; A first drainage hole formed at a first end in the extension direction of the groove portion and configured as a through hole penetrating the plate thickness of the groove portion; a water guide surface portion formed inside the groove portion and descending stepwise or continuously from a second end portion opposite the first end portion in the extension direction of the groove portion toward the first drainage hole formed in the first end portion; Equipped with The heat exchanger is disposed in an internal space of the housing, the base is disposed below at least one side surface of the housing; the base is disposed below the internal space of the housing and has a second drain hole for draining drain water generated in the heat exchanger to the outside of the housing; the base portion is disposed between the heat exchanger and the base in the vertical direction so that the heat exchanger and the base do not come into contact with each other; The base portion is an inner edge, which is one end edge in the short direction of the base portion and is arranged on the inner space side of the housing; Has, a side rib portion provided on the inner edge, having a long plate shape extending in the longitudinal direction of the base, and erected upward from the inner edge; a notch provided at an upper end of the side rib portion, disposed corresponding to the position of the groove portion in the longitudinal direction of the base, and recessed downward from the upper end of the side rib portion; Equipped with The water guide surface portion and the notch portion form a second drainage path through which the drain water flows toward the base disposed inside the housing through the water guide surface portion and the notch portion when the first drainage hole freezes. Heat exchanger support device.

2. The heat exchanger comprises: A plurality of heat transfer tubes are arranged at intervals in the width direction of the heat exchanger, and the tube axis direction extends in the vertical direction, Has, The base is arranged so that a longitudinal direction of the base is parallel to the width direction of the heat exchanger, and the base is provided on the entire lower surface of the heat exchanger. The heat exchanger support device according to claim 1.

3. The first drainage hole of the base is disposed corresponding to the second drainage hole of the base; the first drainage hole of the base is located directly above the second drainage hole of the base, or is located inside the second drainage hole of the base and at the same height as the second drainage hole; The water guide surface portion and the first drainage hole form a first drainage path through which the drain water passes through the water guide surface portion and the first drainage hole and flows from the first drainage hole toward the outside of the housing. The heat exchanger support device according to claim 1 or 2.

4. the upper end of the side rib portion is disposed at a position lower than an installation height at which the heat exchanger is installed, The water guide surface portion and the upper end portion of the side rib portion form a third drainage path through which, when the first drainage hole and the notch portion freeze, the drain water passes through the water guide surface portion, then exceeds the upper end portion of the side rib portion, and flows toward the base disposed inside the housing. The heat exchanger support device according to claim 1 or 2.

5. The heat exchanger is disposed in an internal space of the housing, The base portion is an inner edge that is one end edge in a lateral direction of the base and is disposed on an inner space side of the housing; an outer edge, which is the other edge in the short direction of the base portion, and which is arranged opposite to the inner edge and is arranged on the outer side of the housing relative to the inner edge; and a heat exchanger protection wall provided on the outer edge, having a long plate shape extending in the longitudinal direction of the base, and erected upward from the outer edge; Preparation, The heat exchanger comprises: a heat exchanger header connected to lower ends of the plurality of heat transfer tubes; Has, the heat exchanger protection wall is disposed on the outer side of the housing relative to the heat exchanger header; The heat exchanger support device according to claim 2.

6. A side rib portion provided on the inner edge, having a long plate-like shape extending in the longitudinal direction of the base, and erected upward from the inner edge; a notch provided at an upper end of the side rib portion, disposed corresponding to the position of the groove portion in the longitudinal direction of the base, and recessed downward from the upper end of the side rib portion; a drain gate provided at a lower end of the heat exchanger protection wall and formed to be recessed upward from the lower end of the heat exchanger protection wall; Preparation, The main surface portion of the base and the drain gate form a fourth drain path through which drain water generated in the heat exchanger flows toward the outside of the housing when the first drain hole and the notch are frozen. The heat exchanger support device according to claim 5.

7. A heat exchanger support device that is arranged between a heat exchanger and a base arranged below the heat exchanger and is made of resin, a base portion having a long, flat plate-like shape and a flat main surface portion; a groove formed on the main surface of the base, recessed downward from the main surface, and extending in a lateral direction of the base; A first drainage hole formed at a first end in the extension direction of the groove portion and configured as a through hole penetrating the plate thickness of the groove portion; a water guide surface portion formed inside the groove portion and descending stepwise or continuously from a second end portion opposite the first end portion in the extension direction of the groove portion toward the first drainage hole formed in the first end portion; Equipped with The water guide surface portion of the base portion has a step portion that gradually descends from the second end portion of the groove portion toward the first drainage hole. Heat exchanger support device.

8. The step portion has an inclined surface portion that continuously descends from the second end portion of the groove portion toward the first drain hole. The heat exchanger support device according to claim 7.

9. The water guide surface portion has an inclined surface portion that continuously descends from the second end portion of the groove portion toward the first drainage hole. The heat exchanger support device according to claim 1 or 2.

10. The inclined surface portion is a first inclined surface portion that continuously descends at a first inclination angle; a second inclined surface portion disposed on the first end side relative to the first inclined surface portion and continuously descending at a second inclination angle; a third inclined surface portion that connects the first inclined surface portion and the second inclined surface portion and that continuously descends at a third inclination angle; Equipped with the third tilt angle is greater than the first tilt angle and the second tilt angle; The first tilt angle is equal to or greater than the second tilt angle. The heat exchanger support device according to claim 8.

11. A heat exchanger support device arranged between a heat exchanger and a base arranged below the heat exchanger, and made of resin, comprising: a base portion having a long, flat plate-like shape and a flat main surface portion; a groove formed on the main surface of the base, recessed downward from the main surface, and extending in a lateral direction of the base; A first drainage hole formed at a first end in the extension direction of the groove portion and configured as a through hole penetrating the plate thickness of the groove portion; a water guide surface portion formed inside the groove portion and descending stepwise or continuously from a second end portion opposite the first end portion in the extension direction of the groove portion toward the first drainage hole formed in the first end portion; Equipped with the main surface portion of the base portion has a first main surface portion and a second main surface portion disposed on both ends of the groove portion in a longitudinal direction of the base portion, The first main surface portion and the second main surface portion are each inclined downward in the longitudinal direction of the base portion toward the groove portion. Heat exchanger support device.

12. A heat exchanger support device arranged between a heat exchanger and a base arranged below the heat exchanger, and made of resin, comprising: a base portion having a long, flat plate-like shape and a flat main surface portion; a groove formed on the main surface of the base, recessed downward from the main surface, and extending in a lateral direction of the base; A first drainage hole formed at a first end in the extension direction of the groove portion and configured as a through hole penetrating the plate thickness of the groove portion; a water guide surface portion formed inside the groove portion and descending stepwise or continuously from a second end portion opposite the first end portion in the extension direction of the groove portion toward the first drainage hole formed in the first end portion; Equipped with the main surface portion of the base portion has a first main surface portion and a second main surface portion disposed on both ends of the groove portion in a longitudinal direction of the base portion, the first main surface portion and the second main surface portion are each inclined downward along a direction from the second end portion to the first end portion of the groove portion; Heat exchanger support device.

13. The first drainage hole is provided with a safety guard having a fence-like or lattice-like flat plate shape to prevent foreign matter from entering the first drainage hole. The heat exchanger support device according to claim 1 or 2.

Images