WO2024057833A1

WO2024057833A1 - Air conditioning device and component unit

Info

Publication number: WO2024057833A1
Application number: PCT/JP2023/029991
Authority: WO
Inventors: 剛士木村; 学弘和阪; 直伸宮谷
Original assignee: ダイキン工業株式会社
Priority date: 2022-09-16
Filing date: 2023-08-21
Publication date: 2024-03-21
Also published as: JP7460925B1; JP2024051181A

Abstract

The present invention provides a component unit of an air conditioning device, the component unit comprising: a support member (75) having a fixed part (79) which is fixed to the portion of the inner surface of a top plate (36a) that is located in the interior of an opening (73) while also supporting a heat exchanger (65); and a restraining member (90) that keeps condensation water from being transmitted to the support member (75) from a first region (R1) of the inner surface of the top plate (36a) between the fixed part (79) and a first edge (73a) formed by the opening (73).

Description

Air conditioning equipment and component units

The present disclosure relates to an air conditioner and a component unit.

The air conditioner disclosed in Patent Document 1 includes an indoor unit as a constituent unit. A heat exchanger having heat transfer tubes is arranged inside the casing of the indoor unit. In a heat exchanger, air is cooled or heated by a refrigerant. The air whose temperature has been adjusted by the heat exchanger is supplied to the indoor space.

JP 2019-100643 Publication

The inventor of the present application created the following configuration.

A heat insulating member is provided on the inner surface of the top plate of the casing of the component unit. The heat exchanger is fixed to the top plate of the casing by a support member. Specifically, by forming an opening in the heat insulating member, the fixing portion of the support member is fixed to the top plate through the opening.

In this configuration, the opening is designed to be slightly larger than the fixed part of the support member, taking into account manufacturing errors and assembly errors of the heat insulating member. Therefore, a region of the inner surface of the top plate between the edge formed by the opening and the fixing portion of the support member is exposed to the space inside the casing. As a result, moisture in the air may condense on the surface of this area, resulting in dew condensation.

On the other hand, when the heat exchanger tubes of the heat exchanger are made of aluminum material, the ionization tendency of the heat exchanger tubes is higher than that of the top plate containing an iron-based material. In this case, if condensed water generated in the region of the top plate flows along the support member to the heat exchanger, there is a possibility that the heat exchanger tubes will be electrically corroded.

An object of the present disclosure is to suppress electrical corrosion of a heat exchanger supported by a support member.

A first aspect includes a casing (35) having a top plate (36a) made of a metal material, and a metal that is disposed within the casing (35) and has a higher ionization tendency than the top plate (36a). a heat exchanger (65) having a heat exchanger tube (66) made of a material; a heat insulating member (70) that covers the inner surface of the top plate (36a) and has an opening (73); a support member (75) that supports the top plate (65) and has a fixing portion (79) fixed to a portion of the inner surface of the top plate (36a) located inside the opening (73); Condensation water flows from the first region (R1) between the first edge (73a) formed by the opening (73) and the fixing part (79) on the inner surface of the support member (75). This is a constituent unit of an air conditioner including a suppressing member (90) that suppresses the transmission of air.

In the first aspect, the ionization tendency of the heat exchanger tubes (66) of the heat exchanger (65) is higher than the ionization tendency of the top plate (36a) of the casing (35). However, the suppressing member (90) has a first area (R1 ) to the supporting member (75). Therefore, electrical corrosion of the heat exchanger tube (66) can be suppressed.

In a second aspect, in the first aspect, the suppressing member (90) suppresses the condensed water generated in the first region (R1) from being transmitted to the supporting member (75).

In the second aspect, even if condensed water occurs in the first region (R1), the suppressing member (90) suppresses this condensed water from being transmitted to the support member (75).

In a third aspect, in the second aspect, the suppressing member (90) includes a protrusion (92) extending downward from the first region (R1).

In the third aspect, even if condensed water occurs in the first region (R1), the protrusion (92) serving as the suppressing member (90) can inhibit the condensed water from being transmitted to the support member (75).

In a fourth aspect, in the third aspect, the suppressing member (90) has a protrusion (92) and a height lower than the protrusion (92), and the protrusion (92) and the fixing part ( 79) and a base (93) formed between the base (93) and the base (93).

In the fourth aspect, even if condensed water occurs in the first region (R1), the protrusion (92) can prevent the condensed water from transmitting to the support member (75). The base (93) reduces the area of the first region (R1) exposed to the interior space of the casing (35). Therefore, generation of dew condensation water in the first region (R1) can also be suppressed.

In a fifth aspect, in the third aspect, the protrusion (92) is formed to extend over the fixing part (79).

In the fifth aspect, the area of the first region (R1) covered by the protrusion (92) increases, and the area of the first region (R1) exposed to the space inside the casing (35) decreases. Therefore, generation of dew condensation water in the first region (R1) can be suppressed.

In a sixth aspect, based on the first aspect, the suppressing member (90) suppresses generation of dew condensation water in the first region (R1), so that the suppressing member (90) moves the supporting member from the first region (R1). (75) to prevent condensed water from being transmitted to (75).

In the sixth aspect, the suppressing member (90) suppresses the generation of condensed water itself in the first region (R1). Therefore, electrical corrosion of the heat exchanger tube (66) can be suppressed.

In a seventh aspect, in the sixth aspect, the suppressing member (90) is configured separately from the heat insulating member (70), and is an auxiliary heat insulating member (98) that covers the first region (R1). Contains.

In the seventh aspect, by covering the first region (R1) with the auxiliary heat insulating member (98), it is possible to suppress the generation of condensed water in the first region (R1).

In an eighth aspect, in any one of the first to seventh aspects, the suppressing member (90) has an intermediate portion (95) located between the top plate (36a) and the fixing portion (79). ).

In the eighth aspect, an intermediate portion (95) is provided between the top plate (36a) and the fixed portion (79). Therefore, generation of dew condensation water can be suppressed in the portion of the inner surface of the top plate (36a) where the fixing portion (79) is located.

A ninth aspect is the same as the eighth aspect, and includes a fastening member (85) that fastens the fixing part (79) together with the intermediate part (95) to the top plate (36a).

In the ninth aspect, by fastening the fastening member (85) to the top plate (36a), the intermediate portion (95) of the suppressing member (90) and the support member (75) can be easily attached to the top plate (36a). Can be fixed.

A tenth aspect is that in the ninth aspect, the hardness of the intermediate portion (95) is higher than the hardness of the heat insulating member (70).

In the tenth aspect, it is possible to prevent the intermediate portion (95) from being damaged due to tightening of the fastening member (85).

In an eleventh aspect, in the ninth or tenth aspect, a fastening hole (80) through which the fastening member (85) passes is formed in the fixing part (79), and made of resin and fixed to the fastening member (85) so as to close the gap (C) between the second edge (80a) formed by the fastening hole (80) and the fastening member (85). It is equipped with a fixing device (86).

In the eleventh aspect, when condensed water is generated on the top plate (36a) side, the fixed part prevents the condensed water from moving to the support member (75) side through the fastening hole (80) of the fixed part (79). Can be inhibited by ingredients (86).

A twelfth aspect is that in any one of the eighth to eleventh aspects, a notch (95a) is formed in the intermediate part (95), and the fixing part (79) and the top plate (36a) are configured to contact each other through the notch (95a).

In the twelfth invention, the fixing portion (79) of the support member (75) and the top plate (36a) are in contact with each other through the notch (95a), so that the heat exchanger (65), the support member (75), and The casing (35) can be electrically connected to compensate for these grounds.

In a thirteenth aspect, in any one of the first to twelfth aspects, the suppressing member (90) is made of a resin material.

In the thirteenth aspect, corrosion of the suppressing member (90) can be suppressed by making the suppressing member (90) a resin material.

A fourteenth aspect is an air conditioner including the constituent unit of any one of the first to thirteenth aspects.

FIG. 1 is a piping diagram showing an air conditioner according to an embodiment. FIG. 2 is a perspective view of the indoor unit viewed diagonally from below. FIG. 3 is a schematic plan view of the indoor unit with the top plate of the casing body omitted. FIG. 4 is a schematic sectional view of the indoor unit taken along IV-O-IV in FIG. 3. FIG. FIG. 5 is an enlarged perspective view of the main parts of the indoor heat exchanger and the support member. FIG. 6 is a view of the upper plate of the support member viewed from below. FIG. 7 is a sectional view taken along line IIV-IIV in FIG. 6. FIG. 8 is a sectional view taken along IIIV-IIIV in FIG. 6. FIG. 9 is a diagram corresponding to FIG. 8 according to modification example 1. FIG. 10 is a diagram corresponding to FIG. 8 according to modification 2. FIG. 11 is a diagram corresponding to FIG. 8 according to modification example 3. FIG. 12 is a diagram corresponding to FIG. 8 according to another embodiment.

Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings. Note that the present disclosure is not limited to the embodiments shown below, and various changes can be made without departing from the technical idea of the present disclosure. Each drawing is for conceptually explaining the present disclosure, so dimensions, ratios, or numbers may be exaggerated or simplified as necessary for easy understanding.

(1) Overview of the air conditioner As shown in FIG. 1, the air conditioner (10) includes an outdoor unit (20) and an indoor unit (30). Each of the outdoor unit (20) and the indoor unit (30) is a component unit that configures the air conditioner (10).

The outdoor unit (20) and the indoor unit (30) are connected to each other via a pair of connecting pipes (12). In the air conditioner (10), the outdoor unit (20), the indoor unit (30), and the connecting pipe (12) constitute a refrigerant circuit (11) that performs a vapor compression refrigeration cycle.

(2) Outdoor unit The outdoor unit (20) is installed outdoors. The outdoor unit (20) includes a compressor (21), a four-way switching valve (22), an outdoor heat exchanger (23), an outdoor fan (25), an expansion valve (24), and a liquid side closing valve ( 26) and a gas side shutoff valve (27).

The compressor (21) is, for example, a scroll or rotary hermetic compressor. The compressor (21) sucks and compresses low-pressure refrigerant, and discharges the compressed refrigerant (high-pressure refrigerant).

The four-way switching valve (22) is a valve for switching the flow of refrigerant in the refrigerant circuit (11). The four-way switching valve (22) switches between a first state shown by a solid line in FIG. 1 and a second state shown by a broken line in FIG. 2. The first state is a state in which high-pressure refrigerant discharged by the compressor (21) is sent to the outdoor heat exchanger (23), and low-pressure refrigerant flowing from the indoor unit (30) is sent to the compressor (21). The second state is a state in which the high-pressure refrigerant discharged by the compressor (21) is sent to the indoor unit (30), and the low-pressure refrigerant that has passed through the outdoor heat exchanger (23) is sent to the compressor (21).

The outdoor heat exchanger (23) is a heat exchanger that exchanges heat between the refrigerant and outdoor air. The outdoor heat exchanger (23) is, for example, a fin and tube heat exchanger. The outdoor fan (25) is a fan that supplies outdoor air to the outdoor heat exchanger (23). The expansion valve (24) is an electrically operated expansion valve whose opening degree is variable.

(3) Overview of the indoor unit The indoor unit (30) is installed indoors, which is a space subject to air conditioning. The indoor unit (30) has an indoor heat exchanger (65) and an indoor fan (50).

As shown in FIG. 2, the indoor unit (30) of this embodiment is a ceiling-embedded indoor unit. As shown in FIGS. 3 and 4, the indoor unit (30) includes a casing (35), an indoor fan (50), an indoor heat exchanger (65), a drain pan (55), and a bell mouth (52). Equipped with.

(3-1) Casing The casing (35) includes a casing body (36) and a decorative panel (40). The casing (35) houses an indoor fan (50), an indoor heat exchanger (65), a drain pan (55), and a bell mouth (52).

The casing body (36) is a roughly rectangular box-shaped member that is open on the bottom. The casing body (36) has a roughly flat top plate (36a) and side plates (36b) that extend downward from the periphery of the top plate (36a).

(3-2) Indoor fan As shown in FIG. 4, the indoor fan (50) is a so-called turbo fan. The indoor fan (50) sucks air from below and blows it radially outward. The indoor fan (50) is arranged at the center inside the casing body (36). The indoor fan (50) is driven by an indoor fan motor (51). The indoor fan motor (51) is fixed to the center of the top plate (36a).

(3-3) Bellmouth The bellmouth (52) is placed below the indoor fan (50). The bell mouth (52) is a member for guiding air flowing into the casing (35) to the indoor fan (50). The bell mouth (52), together with the drain pan (55), divides the internal space of the casing (35) into a primary space (37a) located on the suction side of the indoor fan (50) and a primary space (37a) located on the air outlet side of the indoor fan (50). It is divided into a secondary space (37b) and a secondary space (37b).

(3-4) Indoor heat exchanger The indoor heat exchanger (65) is a so-called cross-fin type fin-and-tube heat exchanger. As shown in FIG. 3, the indoor heat exchanger (65) has a rectangular cylindrical shape when viewed from above, and is arranged to surround the indoor fan (50). The indoor heat exchanger (65) is arranged in the secondary space (37b). The indoor heat exchanger (65) exchanges heat with air passing from the inside toward the outside with the refrigerant in the refrigerant circuit.

The indoor heat exchanger (65) includes a plurality of fins (67) and a heat transfer tube (66) that penetrates the plurality of fins (67) in the thickness direction. A refrigerant flows inside the heat exchanger tube (66). The fins (67) are heat transfer members that promote heat exchange between the refrigerant and air.

(3-5) Drain Pan The drain pan (55) is a member made of so-called styrofoam. As shown in FIG. 4, the drain pan (55) is arranged to close the lower end of the casing body (36). A water receiving groove (56) is formed on the upper surface of the drain pan (55) along the lower end of the indoor heat exchanger (65). The lower end of the indoor heat exchanger (65) enters the water receiving groove (56). The water receiving groove (56) receives drain water generated in the indoor heat exchanger (65).

As shown in FIG. 2, the drain pan (55) is formed with four main blowing passages (57) and four sub-blowing passages (58). The main blowout passage (57) and the sub-blowout passageway (58) are passageways through which air that has passed through the indoor heat exchanger (65) passes, and vertically penetrate the drain pan (55).

The main blowout passage (57) is a through hole with an elongated rectangular cross section. One main blowout passage (57) is arranged along each of the four sides of the casing body (36). The sub-blowout passage (58) is a rectangular through-hole with a slightly curved cross section. One sub-blowout passage (58) is arranged at each of the four corners of the casing body (36).

(3-6) Decorative Panel The decorative panel (40) is a resin member formed in the shape of a square thick plate. The lower part of the decorative panel (40) is formed into a square shape that is one size larger than the top plate (36a) of the casing body (36). The decorative panel (40) is arranged to cover the lower surface of the casing body (36). Further, the lower surface of the decorative panel (40) is exposed to the indoor space.

As shown in FIGS. 2 and 4, one square suction port (41) is formed in the center of the decorative panel (40). The suction port (41) vertically penetrates the decorative panel (40) and communicates with the primary space (37a) inside the casing (35). The suction port (41) is provided with a lattice-shaped suction grill (45). A filter (46) is arranged above the suction grill (45).

A generally square ring-shaped air outlet (44) is formed in the decorative panel (40) so as to surround the air inlet (41). As shown in FIG. 2, the air outlet (44) is divided into four main air outlet openings (42) and four sub air outlet openings (43).

The main outlet opening (42) is an elongated rectangular opening. One main air outlet opening (42) is arranged along each of the four sides of the decorative panel (40). The main outlet opening (42) of the decorative panel (40) corresponds one-to-one with the main outlet passage (57) of the drain pan (55). Each main blow-off opening (42) communicates with a corresponding main blow-off passage (57). Moreover, each main blow-off opening (42) is provided with one wind direction adjusting blade (47).

The sub-blowout opening (43) is a 1/4 arc-shaped opening. One sub-blowout opening (43) is arranged at each of the four corners of the decorative panel (40). The sub-air outlet (43) of the decorative panel (40) corresponds one-to-one with the sub-air outlet passageway (58) of the drain pan (55). Each sub-blowout opening (43) communicates with a corresponding sub-blowout passage (58).

(4) Operational operation The air conditioner (10) selectively performs cooling operation and heating operation.

(4-1) Cooling operation In the cooling operation, the four-way switching valve (22) is set to the first state, and refrigerant circulates in the refrigerant circuit (11). In the refrigerant circuit (11), the outdoor heat exchanger (23) functions as a radiator, and the indoor heat exchanger (31) functions as an evaporator. The indoor unit (30) cools the air sucked in from the indoor space in the indoor heat exchanger (31), and blows the cooled air out into the indoor space.

(4-2) Heating operation In the heating operation, the four-way switching valve (22) is set to the second state, and refrigerant circulates in the refrigerant circuit (11). In the refrigerant circuit (11), the indoor heat exchanger (31) functions as a radiator, and the outdoor heat exchanger (23) functions as an evaporator. The indoor unit (30) heats the air sucked in from the indoor space in the indoor heat exchanger (31), and blows out the heated air into the indoor space.

(4-3) Air flow in the indoor unit When the indoor unit is operating, the indoor fan (50) rotates. When the indoor fan (50) rotates, indoor air in the indoor space flows into the primary space (37a) in the casing (35) through the suction port (41). The air that has flowed into the primary space (37a) is sucked into the indoor fan (50) and blown out into the secondary space (37b).

The air that has flowed into the secondary space (37b) is cooled or heated while passing through the indoor heat exchanger (65), and then flows into the four main outlet passages (57) and the four sub-outlet passages (58). It separates and flows in. The air that has flowed into the main blowout passageway (57) is blown out into the indoor space through the main blowout opening (42). The air that has flowed into the sub-blowout passageway (58) is blown out into the indoor space through the sub-blowout opening (43).

(5) Features The indoor unit (30) of the air conditioner (10) of this embodiment includes a heat insulating case (70), a support member (75), a fastening member (85), and a suppressing member (90). We are prepared. The insulation case (70) is provided inside the casing (35) of the indoor unit (30). The support member (75) is fixed to the top plate (36a) of the casing (35) and supports the indoor heat exchanger (65) that is a heat exchanger. The suppressing member (90) suppresses condensed water from being transmitted to the supporting member (75). Details of these configurations will be explained with reference to FIGS. 4 to 8. In the following explanation, words and phrases expressing directions related to "top", "bottom", "right", "left", "front", and "back" are, in principle, based on the directions indicated by the arrows in Figure 5. do.

(5-1) Insulating case As shown in FIG. 4, the insulating case (70) covers the inner surface of the casing body (36). The heat insulating case (70) is a so-called styrofoam heat insulating member. The insulating case (70) is a rectangular box-shaped member with an open bottom surface. The insulation case (70) has a top plate side insulation part (71) formed inside the top plate (36a) and side plate side insulation parts (72) formed inside each side plate (36b). . The heat insulating case (70) suppresses the generation of condensed water on the inner surface of the top plate (36a). Specifically, the heat insulating case (70) covers the inner surface of the top plate (36a) to prevent the inner surface from being exposed to the space inside the casing (35). This prevents the air from cooling down below the dew point temperature on the inner surface of the top plate (36a), and suppresses the generation of dew condensation water on the inner surface.

The insulating case (70) is formed with openings (73) for fixing the support members (75) to the top plate (36a). Specifically, the top plate-side insulating section (71) of the insulating case (70) is formed with openings (73) corresponding to the portions to which the support members (75) are fixed. The indoor unit (30) of this example has multiple support members (75). The insulating case (70) is formed with multiple openings (73) so that one opening corresponds to each of the multiple support members (75).

The opening (73) exposes the inner surface of the top plate (36a) to the interior space of the casing (35). Thereby, the support member (75) can be fixed to the top plate (36a) through the opening (73) in a state where the heat insulating case (70) is attached inside the casing (35).

(5-2) Support member As shown in FIG. 5, the support member (75) is arranged inside the indoor heat exchanger (65) within the casing (35). In other words, the support member (75) is arranged in the primary space (37a) on the upstream side of the air flow than the indoor heat exchanger (65). Although not shown, the indoor unit (30) of this example includes three support members (75). Each support member (75) is provided corresponding to a different side of the indoor heat exchanger (65).

The support member (75) is formed into a plate shape extending in the vertical direction. The support member (75) is formed by folding back a sheet metal. The support member (75) has a main body plate (76), a lower plate (77), a vertical plate (78), and an upper plate (79).

The main body plate (76) extends vertically along the inner surface of the indoor heat exchanger (65). The main body plate (76) is formed into a vertically elongated rectangular plate shape. First folded portions (76a) projecting forward are formed on both left and right sides of the main body plate (76).

The lower plate (77) extends rearward from the lower end of the main body plate (76) along the lower surface of the indoor heat exchanger (65). The vertical plate (78) extends upward from the rear end of the lower plate (77) along the outer surface of the indoor heat exchanger (65). The indoor heat exchanger (65) is held between the main body plate (76), the lower plate (77), and the vertical plate (78). In other words, the support member (75) has a hook portion that supports the indoor heat exchanger (65) from below.

The upper plate (79) extends forward from the upper end of the main body plate (76). The upper plate (79) extends on the opposite side from the indoor heat exchanger (65). The upper plate (79) constitutes a fixing part for fixing the support member (75) to the top plate (36a). The upper plate (79) is formed into a rectangular shape in plan view. A second folded portion (79a) projecting downward is formed at the front end, right end, and left end of the upper plate (79), respectively.

The opening (73) is formed in the heat insulating case (70) at a position corresponding to the upper plate (79). In other words, the upper plate (79) is located inside the opening (73).

A first fastening hole (80) into which the fastening member (85) is inserted is formed in the upper plate (79). The first fastening hole (80) is formed to penetrate the upper plate (79) in its thickness direction. The first fastening hole (80) is formed in a circular shape in plan view.

(5-3) Fastening member The fastening member (85) is a component for fixing the support member (75) to the top plate (36a). The fastening member (85) may be a screw, or may be a bolt and a nut. By tightening the fastening member (85), the upper plate (79) of the support member (75) is fixed to the top plate (36a).

(5-4) Relationship between ionization tendencies of main parts The casing (35) and the support member (75) are made of iron-based metal materials. On the other hand, the heat exchanger tubes (66) and fins (67) of the indoor heat exchanger (65) are made of aluminum-based metal material. Therefore, the ionization tendency of the heat exchanger tube (66) is higher than that of the top plate (36a). In addition, the ionization tendency of the heat exchanger tube (66) is higher than that of the support member (75). The ionization tendency of the support member (75) is the same as or lower than that of the top plate (36a). The ionization tendency of the fastening member (85) is the same as or lower than that of the top plate (36a). The materials of these parts are merely examples, and other materials may be used.

(5-5) Concerning the occurrence of condensation The above-mentioned heat insulating case (70) is designed so that the size of the opening (73) in plan view is slightly larger than that of the upper plate (79) in consideration of manufacturing and assembly errors. be done. This is because if the positions of the upper plate (79) and the opening (73) shift due to these errors, the upper plate (79) may not be able to be fixed to the top plate (36a).

When the size of the opening (73) is set slightly larger in this way, the first edge (73a) formed by the opening (73) on the inner surface of the top plate (36a) and the upper plate (79) A region (hereinafter referred to as a first region (R1)) is formed in between. Due to this, if the first region (R1) of the top plate (36a) is exposed to the internal space of the casing (35), the air will be cooled in the first region (R1) and dew condensation will occur. There is a possibility that it will happen.

As described above, the heat exchanger tube (66) is made of a material that has a higher ionization tendency than the top plate (36a). Therefore, if condensed water is transmitted from the first region (R1) to the heat exchanger tube (66) via the support member (75), there is a possibility that the heat exchanger tube (66) will be electrically corroded.

(5-6) Suppression member
In consideration of the above problems, the indoor unit (30) of this embodiment is provided with a suppressing member (90) that suppresses the transmission of condensed water from the first region (R1) to the support member (75). The suppressing member (90) suppresses the condensed water generated in the first region (R1) from being transmitted to the supporting member (75).

The suppressing member (90) is made of resin material. Preferably, the restraining member (90) is a heat insulating material. The hardness of the suppressing member (90) is higher than that of the heat insulating case (70).

As shown in FIGS. 6 to 8, the suppressing member (90) is arranged inside the opening (73) of the heat insulating case (70). The suppressing member (90) has a side portion (91) located in the first region (R1) of the top plate (36a) and an intermediate portion (95) located between the top plate (36a) and the top plate (79). ).

The side portion (91) of the suppressing member (90) has a protrusion (92) and a base (93). The suppressing member (90) of this embodiment has a plurality of protrusions (92) surrounding the upper plate (79). One protrusion (92) is provided at a position corresponding to each side of the upper plate (79). The protrusion (92) is formed into a plate shape. The protrusion (92) extends downward from the first region (R1).

Specifically, the plurality of protrusions (92) of this embodiment are composed of a first protrusion (92A), a second protrusion (92B), and a third protrusion (92C). In the first region (R1) of the present embodiment, the areas of the front, right, and left portions of the upper plate (79) are relatively large. In this embodiment, three protrusions (92) are provided, one corresponding to each of these parts. The first protrusion (92A) is located on the front side of the upper plate (79). The first protrusion (92A) extends left and right along the front side of the upper plate (79). The second protrusion (92B) is located on the right side of the upper plate (79). The second protrusion (92B) extends back and forth along the right side of the upper plate (79). The third protrusion (92C) is located on the left side of the upper plate (79). The third protrusion (92C) extends back and forth along the left side of the upper plate (79).

The base (93) has a lower height in the vertical direction than the protrusion (92). The base (93) is formed between the protrusion (92) and the upper plate (79) in plan view. In other words, the base (93) is formed to span the protrusion (92) and the upper plate (79) in plan view.

The intermediate portion (95) is interposed between the top plate (36a) and the upper plate (79). The intermediate portion (95) covers an area of the inner surface of the top plate (36a) that is located above (behind) the upper plate (79). The intermediate portion (95) is formed in a rectangular shape in a plan view. The hardness of the intermediate portion (95) is higher than the hardness of the insulating case (70). A second fastening hole (96) is formed in the intermediate portion (95) through which the fastening member (85) is inserted. The second fastening hole (96) is formed in a circular shape in a plan view. The center of the second fastening hole (96) and the center of the first fastening hole (80) are generally aligned. The inner diameter of the second fastening hole (96) is smaller than the inner diameter of the first fastening hole (80).

(5-7) Indoor heat exchanger installation work The indoor heat exchanger (65) is supported on the top plate (36a) by the following procedure.

Attach the insulation case (70) inside the casing (35). Next, the indoor heat exchanger (65) is hooked onto the hook portion of the support member (75). Next, the suppressing member (90) and the upper plate (79) of the supporting member (75) are positioned in the opening (73) of the heat insulating case (70). Insert the middle part (95) of the restraining member (90) between the top plate (79) and the top plate (36a), and align the axes of the first fastening hole (80) and the second fastening hole (96). In this state, the fastening member (85) is fastened to the top plate (36a). Thereby, the suppressing member (90) and the supporting member (75) are fixed to the top plate (36a) by the fastening member (85).

(6) Effects of the embodiment The suppressing member (90) has a first area ( This suppresses the transmission of condensed water from R1) to the support member (75). Specifically, the suppressing member (90) suppresses the condensed water generated in the first region (R1) from being transmitted to the supporting member (75). As a result, the condensed water generated in the first region (R1) can be suppressed from being transmitted to the aluminum heat exchanger tube (66) via the support member (75), so that the heat exchanger tube (66) is electrically corroded. can be restrained from doing so.

More specifically, the suppressing member (90) has a protrusion (92) extending downward from the first region (R1). Therefore, in the first region (R1), if condensed water occurs on the opposite side of the upper plate (79) across the side part (91), this condensed water will flow onto the upper plate (79). Reaching can be obstructed by the protrusion (92). Specifically, since the condensed water falls downward along the side surface of the projection (92), it is possible to suppress the condensed water from moving to the upper plate (79). Therefore, it is possible to suppress the condensed water generated in the first region (R1) from being transmitted to the support member (75).

The suppressing member (90) includes a protrusion (92) and a base (93) that is lower in height than the protrusion (92) and formed between the protrusion (92) and the upper plate (79). I'm here.

The protrusion (92) can prevent condensed water generated in the first region (R1) from reaching the upper plate (79). In addition, the base (93) can suppress the generation of dew water near the upper plate (79). Therefore, it is possible to further suppress the transmission of condensed water from the first region (R1) to the support member (75).

The suppressing member (90) includes an intermediate portion (95) located between the top plate (36a) and the upper plate (79). The intermediate portion (95) covers a portion of the inner surface of the top plate (36a) located on the back side of the upper plate (79). Therefore, generation of dew condensation water in this portion can be suppressed. Therefore, it is possible to suppress condensed water from being transmitted to the support member (75) via the second fastening hole (96) and the first fastening hole (80).

Since the base portion (93) and the intermediate portion (95) are continuously formed as one body, the generation of condensed water from the vicinity of the upper plate (79) to the back side of the upper plate (79) in the first region (R1) can be prevented at the same time. It can be suppressed.

The indoor unit (30) includes a fastening member (85) that fastens the top plate (79) and the middle part (95) to the top plate (36a). Therefore, by fastening the fastening member (85), the suppressing member (90) and the supporting member (75) can be simultaneously fixed to the top plate (36a). In addition, the suppressing member (90) can be easily aligned to a position corresponding to the upper plate (79).

The hardness of the middle part (95) is higher than that of the insulation case (70). Therefore, it is possible to prevent the intermediate portion (95) or the suppressing member (90) from being damaged due to fastening by the fastening member (85). Therefore, it is possible to prevent dew condensation from being generated on the back side of the upper plate (79) due to damage to the intermediate portion (95).

The suppressing member (90) is made of resin material. Therefore, corrosion of the suppressing member (90) due to dew condensation can be suppressed. By using the suppressing member (90) as a heat insulating material, it is possible to suppress the generation of dew water in the portion of the top plate (36a) covered with the suppressing member (90).

(7) Modifications The embodiment described above may have the following configuration. In the following description, points different from the embodiment described above will be explained.

(7-1) Modification example 1
As shown in FIG. 9, the suppressing member (90) of Modification 1 is an auxiliary heat insulating member (98). The auxiliary heat insulating member (98) is composed of a separate component separate from the heat insulating case (70). The auxiliary heat insulating member (98) is arranged inside the opening (73) so as to cover the first region (R1). The auxiliary heat insulating member (98) may be made of the same material as the heat insulating case (70), or may be made of a different material. The auxiliary heat insulating member (98) may cover the entire first region (R1) or may cover a portion thereof. The auxiliary heat insulating member (98) suppresses the generation of condensed water in the first region (R1), thereby suppressing the transmission of condensed water from the first region (R1) to the support member (75). As a result, electrical corrosion of the heat exchanger tube (66) can be suppressed.

The auxiliary insulation member (98) has a smaller volume than the insulation case (70). Therefore, the auxiliary heat insulating member (98) has smaller manufacturing errors and assembly errors than the heat insulating case (70). Therefore, the auxiliary heat insulating member (98) can be placed inside the opening (73) with high precision.

(7-2) Modification example 2
As shown in FIG. 10, in the second modification, the configuration of the above embodiment further includes a resin fixture (86). The fixture (86) is a so-called washer made of resin. The fixture (86) is arranged between the head (85a) of the fastening member (85) and the upper plate (79). A hole is formed in the fixture (86) through which the threaded portion (85b) of the fastening member (85) is inserted. The fixture (86) has a gap (C) between the second edge (80a) formed by the first fastening hole (80) of the top plate (79) and the threaded portion (85b) of the fastening member (85) ) is fixed to the fastening member (85) so as to close it. The fixture (86) prevents condensed water generated on the top plate (36a) from being transmitted to the support member (75) through the gap (C). Therefore, electrical corrosion of the heat exchanger tube (66) can be suppressed. Corrosion of the fixture (86) can also be suppressed by using a resin material for the fixture (86).

(7-3) Modification example 3
As shown in FIG. 11, in the third modification, a cutout (95a) is formed at the center of the intermediate portion (95) of the suppressing member (90) of the embodiment. The notch (95a) constitutes a circular opening that enlarges the inner diameter of the second fastening hole (96) of the embodiment. In modification 3, the upper plate (79) and the top plate (36a) are configured to contact each other through the notch (95a). Specifically, as schematically shown in FIG. 11, in this example, as the fastening member (85) is fastened, the center portion of the top plate (79) is pressed against the top plate (36a). Thereby, the second edge (80a) of the top plate (79) comes into contact with the top plate (36a). Here, the top plate (36a) is grounded. Therefore, by bringing the top plate (36a) and the support member (75) into contact, the top plate (36a), the support member (75), and the heat exchanger (65) can be grounded. As a result, it is possible to suppress generation of sparks and electric shock to workers due to charging of the indoor heat exchanger (65).

(8) Other Embodiments The embodiments and modifications described above may have the following configurations.

The support member (75) and the suppression member (90) may be provided in the outdoor unit (20) as a constituent unit. In this case, the support member (75) supports the outdoor heat exchanger (23), which is a heat exchanger.

The support member (75) may be placed outside the indoor heat exchanger (65). In other words, the support member (75) may be arranged in the secondary space (37b) on the downstream side of the air flow than the indoor heat exchanger (65).

The suppressing member (90) may be made of a metal material. In this case, the ionization tendency of the suppressing member (90) is preferably the same as or lower than that of the top plate (36a). The potential difference between the suppressing member (90) and the indoor heat exchanger (65) is preferably smaller than the potential difference between the top plate (36a) and the indoor heat exchanger (65).

The suppressing member (90) may have one, two, or four or more protrusions (92). When there are four protrusions (92), it is preferable to arrange one protrusion (92) corresponding to each of the four sides of the upper plate (79).

As shown in FIG. 12, the protrusion (92) in the embodiment may extend across the upper plate (79). In the embodiment described above, the suppressing member (90) with this configuration does not have a base (93) lower than the protrusion (92). The height of the protrusion (92) is the same throughout. With this configuration, the area of the first region (R1) covered by the protrusion (92) becomes large, and the area of the first region (R1) exposed to the space inside the casing (35) becomes small. Therefore, generation of dew condensation water in the first region (R1) can be suppressed.

Although the embodiments and modifications have been described above, it will be understood that various changes in form and details can be made without departing from the spirit and scope of the claims. Furthermore, elements of the above embodiments, modifications, and other embodiments may be combined or replaced as appropriate.

The descriptions of “first,” “second,” “third,” etc. mentioned above are used to distinguish the words to which these descriptions are given, and even the number and order of the words are limited. It's not something you do.

As explained above, the present disclosure is useful for air conditioners and component units.

10 Air conditioner
35 Casing
36a Top plate
65 Indoor heat exchanger (heat exchanger)
67 Heat exchanger tube
70 Insulation case (insulation material)
73 Aperture
73a 1st edge
75 Supporting member
79 Upper plate (fixed part)
80 First fastening hole (fastening hole)
80a 2nd edge
85 Fastening members
86 Fixtures
90 Suppression member
92 Protrusion
93 Base
95 Middle part
95a notch
98 Auxiliary insulation material
C gap
R1 1st area

Claims

a casing (35) having a top plate (36a) made of a metal material;
a heat exchanger (65) having a heat exchanger tube (66) disposed within the casing (35) and made of a metal material having a higher ionization tendency than the top plate (36a);
a heat insulating member (70) that covers the inner surface of the top plate (36a) and has an opening (73);
a support member (75) that supports the heat exchanger (65) and has a fixing portion (79) fixed to a portion of the inner surface of the top plate (36a) located inside the opening (73); ,
On the inner surface of the top plate (36a), the supporting member (75 ) and a suppressing member (90) that suppresses the transmission of condensed water to the air conditioner.
The constituent unit of the air conditioner according to claim 1, wherein the suppressing member (90) suppresses condensed water generated in the first region (R1) from being transmitted to the supporting member (75).
The air conditioner configuration unit according to claim 2, wherein the suppressing member (90) includes a protrusion (92) extending downward from the first region (R1).
The suppressing member (90) includes the protrusion (92) and a base that has a lower protrusion height than the protrusion (92) and is formed between the protrusion (92) and the fixing part (79). (93) The constituent unit of the air conditioner according to claim 3.
The air conditioner component unit according to claim 3, wherein the protrusion (92) is formed to span the fixing part (79).
The suppressing member (90) suppresses the transmission of condensed water from the first region (R1) to the support member (75) by suppressing the generation of condensed water in the first region (R1). A constituent unit of an air conditioner according to claim 1.
The air conditioner according to claim 6, wherein the suppressing member (90) is configured separately from the heat insulating member (70) and includes an auxiliary heat insulating member (98) that covers the first region (R1). Component unit of the device.
The air according to any one of claims 1 to 7, wherein the suppressing member (90) includes an intermediate part (95) located between the top plate (36a) and the fixing part (79). Constituent unit of harmonization device.
The air conditioner component unit according to claim 8, further comprising a fastening member (85) that fastens the fixing part (79) and the intermediate part (95) to the top plate (36a).
The air conditioner component unit according to claim 9, wherein the intermediate portion (95) has a higher hardness than the heat insulating member (70).
A fastening hole (80) through which the fastening member (85) passes is formed in the fixing part (79),
The fastening member is arranged so as to close a gap (C) between the second edge (80a) provided on the lower side of the fixing part (79) and formed by the fastening hole (80) and the fastening member (85). The air conditioner configuration unit according to claim 9 or 10, further comprising a resin fixture (86) fixed to (85).
A notch (95a) is formed in the intermediate portion (95),
The air conditioner component unit according to any one of claims 8 to 11, wherein the fixing part (79) and the top plate (36a) are configured to contact each other through the notch (95a).
The structural unit of an air conditioner according to any one of claims 1 to 12, wherein the suppressing member (90) is made of a resin material.
An air conditioner comprising the component unit according to any one of claims 1 to 13.