KR20140099555A - Outdoor unit for refrigeration device - Google Patents

Abstract

An aluminum or aluminum alloy bracket for mounting a heat exchanger made of aluminum or aluminum alloy and a side plate made of non-aluminum metal are fixed and corrosion of the bracket made of aluminum or aluminum alloy is prevented. The mounting piece 53 of the bracket 50 made of aluminum is fixed to the side plate 23 on the side of the blower unit of the steel plate. The steel plate side plate 23 on the blower side has an opening 233g through which the mounting piece 53 of the bracket 50 made of aluminum penetrates. The mounting piece 53 of the bracket 50 made of aluminum is fixed through the opening 233g. The resin cover (60) is interposed between the bracket (50) made of aluminum and the blower chamber side plate (23) made of steel and forms a predetermined gap therebetween.

Description

OUTDOOR UNIT FOR REFRIGERATION DEVICE [0002]

The present invention relates to an outdoor unit of a refrigeration system, particularly an outdoor unit of a refrigeration system having a heat exchanger made of aluminum or aluminum alloy.

In recent years, in order to reduce the weight of the heat exchanger, aluminum or an aluminum alloy may be used not only for the fin of the heat exchanger but also for the heat transfer tube and header collecting tube of the heat exchanger. On the other hand, a heat exchanger made of aluminum or aluminum alloy is housed in a casing such as an outdoor unit. However, the casing is formed of a non-aluminum metal other than aluminum or an aluminum alloy such as a steel plate .

Such direct contact of the non-aluminum metal to the heat exchanger made of aluminum or aluminum alloy causes corrosion of the heat exchanger. Therefore, as described in Patent Document 1 (Japanese Unexamined Patent Publication (Kokai) No. 7-234088), conventionally, a bracket made of aluminum or aluminum alloy is attached to a header collecting tube of a heat exchanger made of aluminum or aluminum alloy And the heat exchanger is installed on a non-aluminum metal such as a vehicle body through a bracket made of aluminum or aluminum alloy.

Japanese Patent Application Laid-Open No. 7-234088

However, in such a configuration, a portion of the bracket made of aluminum or aluminum alloy and the non-aluminum metal contact with each other causes corrosion of the bracket made of aluminum or aluminum alloy. Such corrosion of the bracket made of aluminum or aluminum alloy causes problems such as poor appearance and loosening of the heat exchanger installation.

An object of the present invention is to provide a bracket made of aluminum or aluminum alloy for fixing a heat exchanger made of aluminum or an aluminum alloy and a side plate made of non-aluminum metal, and also to prevent corrosion of brackets made of aluminum or aluminum alloy will be.

An outdoor unit of a refrigeration system according to a first aspect of the present invention is an outdoor unit of an aluminum or aluminum alloy having a heat exchanger made of aluminum or aluminum alloy and a fixed portion directly attached to a heat exchanger made of aluminum or aluminum alloy A side plate made of a non-aluminum metal and fixed to a fixing portion of a bracket made of aluminum or aluminum alloy having an opening through which a fixing portion of a bracket made of aluminum or aluminum alloy is passed through the opening, And a non-metallic member interposed between a bracket made of an aluminum alloy and a side plate made of non-aluminum metal to form a predetermined gap between a bracket made of aluminum or aluminum alloy and a side plate made of non-aluminum metal.

The non-metallic member referred to herein includes a member made of a polymer material such as a resin member and a rubber member, and a member made of a non-metallic inorganic material such as a ceramic member.

In the outdoor unit of the refrigeration system according to the first aspect, since the bracket made of aluminum or aluminum alloy and the side plate made of non-aluminum metal are not in contact with each other by the non-metallic member, Corrosion is prevented. In addition, since the fixing portion of the bracket penetrates the opening of the side plate, it is possible to provide a structure capable of performing work such as fixing of the bracket from the outside of the side plate of the out-room unit.

An out-room unit of a refrigeration system according to a second aspect of the present invention is the out-room unit of a refrigeration system according to the first aspect, wherein the non-metallic member is provided between an opening of a side plate made of non-aluminum metal and a bracket made of aluminum or aluminum alloy And a first gap retaining portion disposed around the bracket made of aluminum or aluminum alloy so as to have a gap therebetween.

In the outdoor unit of the refrigeration system according to the second aspect, since the gap between the bracket and the opening of the side plate is formed by the first interval holding portion, even in the vicinity of the opening of the side plate, And corrosion of the bracket made of aluminum or aluminum alloy due to these contacts can be prevented.

In the outdoor unit of the refrigeration system according to the third aspect of the present invention, in the outdoor unit of the refrigeration system according to the second aspect, in the state where the fixing portion of the bracket made of aluminum or aluminum alloy is inserted into the non- And further comprises a non-aluminum metal latching member for fastening the non-metallic member to the metal side plate.

In the outdoor unit of the refrigeration apparatus according to the third aspect, in order to fasten the nonmetal member by the latching support member, non-aluminum metal is used as the latching support member, for example, So that the bracket and the side plate can be fastened at a low cost while securing the necessary strength.

The outdoor unit of the refrigeration system according to the fourth aspect of the present invention is the outdoor unit of the refrigeration system according to the third aspect, wherein the bracket made of aluminum or aluminum alloy is larger in size than the non- A through hole is formed and the non-aluminum metal latching support member penetrates the through hole so as not to come into contact with the bracket made of aluminum or aluminum alloy, and a non-metallic member is fastened to the side plate made of non-aluminum metal.

In the outdoor unit of the refrigeration system according to the fourth aspect, since the engaging member penetrates the through hole of the bracket, the bracket can be strongly tightened by the engaging support member through the nonmetal member. Therefore, have. In addition, since the non-aluminum metal latching member does not contact the bracket made of aluminum or aluminum alloy, corrosion of the bracket due to contact of non-aluminum metal and aluminum can be prevented.

A fifth aspect of the present invention provides an outdoor unit of an outdoor unit according to the third aspect of the present invention wherein the bracket made of aluminum or aluminum alloy is larger in size than a non- A through hole is formed and cooperates with a non-aluminum metal engaging support member passing through the through hole so as not to come into contact with the bracket made of aluminum or aluminum alloy, and the fixing part of the bracket is fastened to the side plate made of non- And a non-aluminum metal piercing support structure.

In the outdoor unit of the refrigeration system according to the fifth aspect, since the fixing portion of the bracket is fastened to the engaging support member made of non-aluminum metal through the non-metallic member and the engaging support structure, the bracket can be firmly fixed by the non- .

A sixth aspect of the present invention is the outdoor unit of the refrigeration system according to any one of the third to fifth aspects of the outdoor unit of the refrigeration system wherein the side plates are arranged so as to intersect with side surfaces constituted by the side plates A first folded surface which is folded so as to extend in the direction of the first folded surface and in which an opening is formed and a second folded surface which is provided subsequent to the first folded surface and folded so as to extend in the direction intersecting the first folded surface, The member is fastened to the second folded surface by the hooking support member.

In the outdoor unit of the refrigeration apparatus according to the sixth aspect, since the non-metallic member is fastened to the second folded surface, the fastening portion of the bracket can be pulled out and inserted in a direction substantially parallel to the second folded surface, Maintenance becomes easy.

The outdoor unit of the refrigeration system according to the seventh aspect of the present invention further includes a front plate made of non-aluminum metal having a folded end face that covers the second folded face of the side plate, , And the non-metallic member further has a second interval maintaining portion interposed between the folded end face and the fixed portion of the bracket made of aluminum or aluminum alloy.

In the outdoor unit of the refrigeration system according to the seventh aspect, since the bracket or the nonmetal member can be covered at the folded end face of the front plate, the appearance can be finely finished with a small number of parts.

In the outdoor unit of the refrigeration system according to the first aspect, the bracket made of aluminum or aluminum alloy for mounting a heat exchanger made of aluminum or aluminum alloy and the side plate made of non-aluminum metal can be fixed from the outside of the side plate, Corrosion of the bracket made of aluminum or aluminum alloy can be prevented.

In the outdoor unit of the refrigeration apparatus according to the second aspect, the corrosion of the bracket made of aluminum or aluminum alloy in the vicinity of the opening of the side plate is prevented, and the effect of preventing corrosion is improved.

In the outdoor unit of the refrigeration apparatus according to the third aspect, the bracket made of aluminum or aluminum alloy and the side plate made of non-aluminum metal can be firmly fixed, and the strength of the outdoor unit can be improved.

In the outdoor unit of the refrigeration system according to the fourth aspect, corrosion of the bracket due to the contact of the non-aluminum metal with aluminum by the latching part is prevented, and the heat exchanger made of aluminum or aluminum alloy is firmly fixed .

In the outdoor unit of the refrigeration system according to the fifth aspect, corrosion of the bracket due to the contact of the non-aluminum metal with aluminum by the latching part is prevented, and by the cooperation of the latching part and the latching support structure, The heat exchanger made of an aluminum alloy can be firmly fixed.

In the outdoor unit of the refrigeration apparatus according to the sixth aspect, assembly and maintenance of the outdoor unit are facilitated, and the cost for manufacturing and maintenance can be reduced.

In the outdoor unit of the refrigeration apparatus according to the seventh aspect, improvement in designability and cost reduction can be achieved.

1 is a circuit diagram for explaining an outline of a configuration of an air conditioner according to an embodiment;
2 is a perspective view showing the appearance of an outdoor unit;
3 is a schematic plan view showing an outdoor unit in which a ceiling plate is removed.
4 is a schematic rear view showing a schematic structure of an outdoor heat exchanger.
5 is a partial cross-sectional view for explaining a configuration of an outdoor heat exchanger.
6 is an enlarged cross-sectional view for explaining a configuration of a heat exchanger of an outdoor heat exchanger.
Fig. 7A is a left side view of the blower chamber side plate, Fig. 7B is a front view of the blower chamber side plate, and Fig. 7C is a right side view of the blower chamber side plate.
Fig. 8 (a) is a plan view of the side panel on the side of the blower chamber, and Fig. 8 (b) is a sectional view taken in the direction of an arrow II in Fig.
9 (a) is a plan view of the bracket, (b) is a front view of the bracket, and (c) is a side view of the bracket.
10 is a partially enlarged perspective view showing a bracket soldered to a header collection tube;
11 (a) is a left side view of the resin cover, and Fig. 11 (b) is a bottom view of the resin cover.
Fig. 12 (a) is a rear view of the resin cover, and Fig. 12 (b) is a right side view of the resin cover.
13 is a partial cross-sectional view showing a mounting state of the bracket and the resin cover on the side plate on the side of the blower chamber.
14 is a partial cross-sectional view showing a mounting state of a bracket and a resin cover according to a modified example on the side plate on the side of the blower chamber.
Fig. 15 (a) is a side view of a resin cover according to a modified example, and Fig. 15 (b) is a side view of a bracket according to a modified example.

(1) Overall configuration of air conditioner

As a refrigerating device according to an embodiment of the present invention, a refrigerating device used in an air conditioner will be described. 1 is a circuit diagram showing an outline of an air conditioner. The air conditioner (1) is composed of an outdoor unit (2) and an indoor unit (3). This air conditioner (1) is a device used for cooling and heating each room in a building by performing a vapor compression refrigeration cycle operation. The air conditioner 1 includes an outdoor unit 2 serving as a heat source unit, an indoor unit 3 serving as a utilization unit and refrigerant communication tubes 6 and 7 for connecting the outdoor unit 2 and the indoor unit 3 to each other Respectively.

An air conditioner (1) in which an outdoor unit (2), an indoor unit (3) and refrigerant communication pipes (6, 7) are connected to each other and includes a compressor (11), a four- The compressor 13, the expansion valve 14, the indoor heat exchanger 4, the accumulator 15, etc. are connected by a refrigerant pipe. The refrigerating apparatus is filled with a refrigerant, and the refrigerating cycle operation is performed such that the refrigerant is compressed, cooled, reduced in pressure, heated and evaporated, and then compressed again. The liquid refrigerant side close valve 17 and the gas refrigerant side close valve 18 of the outdoor unit 2 connected to the refrigerant communication pipes 6 and 7 are in the open state.

1, that is, when the discharge side of the compressor 11 is connected to the gas side of the outdoor heat exchanger 13 and the suction side of the compressor 11 is connected to the gas side of the outdoor heat exchanger 13 Is connected to the gas side of the indoor heat exchanger (4) through the accumulator (15), the gas refrigerant side close valve (18) and the refrigerant communication pipe (7). In the cooling operation, the air conditioner 1 controls the outdoor heat exchanger 13 as the condenser of the refrigerant compressed in the compressor 11, and the indoor heat exchanger 4 as the condenser of the condensed refrigerant in the outdoor heat exchanger 13 And functions as an evaporator of the refrigerant.

1, that is, the discharge side of the compressor 11 is connected to the indoor heat exchanger 4 via the gas refrigerant-side closing valve 18 and the refrigerant communication pipe 7. In the heating operation, And the suction side of the compressor 11 is connected to the gas side of the outdoor heat exchanger 13. As shown in Fig. In the heating operation, the air conditioner 1 is configured so that the indoor heat exchanger 4 serves as a condenser for refrigerant compressed in the compressor 11, and the outdoor heat exchanger 13 serves as a condenser for the refrigerant compressed in the indoor heat exchanger 4 And functions as an evaporator of the refrigerant.

(2) Detailed configuration of air conditioner

(2-1) Indoor unit

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

(2-2) Outdoor unit

The outdoor unit 2 is installed outside the building or the like and is connected to the indoor unit 3 installed in the room through the refrigerant communication pipes 6 and 7. As shown in Figs. 2 and 3, the outdoor unit 2 is provided with a unit casing 20 having a substantially rectangular parallelepiped shape. As shown in Fig. 3, the out-room unit 2 has a structure in which the internal space of the unit casing 20 is divided into two by a partitioning plate 28 extending in the vertical direction to form the blower room S1 and the machine room S2 (So-called trunk structure). In the blower room S1, as shown in Fig. 3, an outdoor heat exchanger 13, an outdoor fan 16, and the like are disposed. The machine room S2 is provided with a compressor 11 and an accumulator 15 shown in Fig. 3 and a four-way switching valve 12, an expansion valve 14 and a liquid refrigerant closing valve 17 ), A gas refrigerant-side closing valve 18, and the like are disposed.

The unit casing 20 includes a top plate 21, a bottom plate 22, a blower chamber side plate 23, a machine chamber side plate 24, a blower chamber side front plate 25, As shown in Fig. The ceiling plate 21 is a plate-like member made of a steel plate that forms a ceiling portion of the unit casing 20. The bottom plate 22 is a plate-like member made of a steel plate that constitutes a bottom portion of the unit casing 20. [ The blower chamber side lateral plate 23 is a plate-like member made of a steel plate that constitutes a side portion of the unit casing 20 close to the blower chamber S1. The machine room side lateral plate 24 is a plate-like member made of a steel plate that constitutes a part of a side portion close to the machine room S2 of the unit casing 20 and a back portion close to the machine room S2 of the unit casing 20. [ The front panel 25 of the blower actual side is a plate-like member made of a steel sheet constituting a front portion of the blower chamber S1 of the unit casing 20 and a part of the front surface portion of the machine room S2 of the unit casing 20. [ The fan front-side front plate 25 and the fan-chamber-side lateral plate 23 may be integrally formed by press-forming one sheet of steel plate.

The outdoor unit 2 sucks the outdoor air from the back surface and a part of the side surface of the unit casing 20 into the blower room S1 in the unit casing 20 and discharges the sucked outdoor air from the front surface of the unit casing 20 . The intake port 20a of the outdoor air sucked into the blower chamber S1 in the unit casing 20 is located between the end of the back side of the blower chamber side plate 23 and the end of the machine room side plate 24 of the blower chamber S1 And a suction port 20b for the outdoor air is formed in the blower chamber side lateral plate 23. Further, a blowout port 20c for blowing out the outdoor air sucked into the blower chamber S1 is provided on the blower-room-side front plate 25. The front side of the air outlet 20c is covered with a fan grille 25a.

The outdoor heat exchanger 13 is connected to a blower chamber S1 which is a space covered with a part of the blower chamber side plate 23, the blower chamber side front plate 25, the partition plate 28 and the machine room side plate 24 in the vertical direction As shown in Fig. The outdoor heat exchanger 13 has an L-shape in plan view, and faces the intake ports 20a and 20b. The outdoor heat exchanger (13) is a heat exchanger made of aluminum. In order to prevent corrosion, the aluminum outdoor heat exchanger 13 is attached to the ceiling plate 21, the bottom plate 22, the blower chamber side plate 23, and the machine room side plate (not shown) by a steel bracket or the like 24 and the partition plate 28 and the like. One end of the outdoor heat exchanger (13) is connected to the four-way switching valve (12), and the other end thereof is connected to the expansion valve (14).

(2-2-1) Outdoor Heat Exchanger

Next, the configuration of the outdoor heat exchanger 13 will be described in detail with reference to Figs. 4, 5, and 6. Fig. The heat exchanger made of aluminum is made up of aluminum heat transfer fins 32, flat aluminum multiphase tubes 33 and aluminum header collection tubes 34, 35. The outdoor heat exchanger 13 is provided with a heat exchanging part 31 for exchanging heat between the outdoor air and the refrigerant. The heat exchanging part 31 includes a plurality of aluminum heat transfer fins 32, And a flat multi-vessel 33. The heat exchanging unit 31 is provided with an upper heat exchanging part 33a in which a gas refrigerant or a flattened multiple blood vessel 33a for gas refrigerant for flowing a gas-liquid two- And a lower heat exchange portion 31b to which a liquid refrigerant in the form of a gas-liquid two-phase liquid or a flat multi-flow pipe 33b for liquid refrigerant for flowing liquid refrigerant is connected.

The flat multi-wall vessel 33 functions as a heat transfer tube and exchanges heat between the heat transfer fin 32 and the outside air between the heat transfer fin 32 and the refrigerant flowing therein.

The outdoor heat exchanger (13) is provided with aluminum header aggregation tubes (34, 35) provided at both ends of the heat exchanging section (31). The header collecting tube 34 has a cylindrical pipe structure made of aluminum and has internal spaces 34a and 34b partitioned by aluminum baffles 34c. A heat exchanger side gas pipe 38 made of aluminum is connected to the upper internal space 34a and a liquid pipe 39 on the heat exchanger side made of aluminum is connected to the lower internal space 34b.

The header collecting tube 35 has a cylindrical pipe structure made of aluminum and is partitioned by aluminum baffles 35f, 35g, 35h and 35i to form internal spaces 35a, 35b, 35c, 35d and 35e have. A plurality of flattened multivoltage vessels 33a for gas refrigerant connected to the upper internal space 34a of the header collecting pipe 34 are connected to the three internal spaces 35a, 35b and 35c of the header collecting pipe 35. [ A plurality of flat multi-wall blood vessels 33b for liquid refrigerant connected to the lower internal space 34b of the header collecting tube 34 are connected to the three internal spaces 35c, 35d and 35e of the header collecting tube 35 have.

The inner space 35a and the inner space 35e of the header collecting pipe 35 are connected by a connection pipe 36 made of aluminum and the inner space 35b and the inner space 35d are connected to each other through an aluminum- (Not shown). The internal space 35c connects a part of the upper internal space (a portion connected to the internal space 34a) and a part of the lower internal space (a portion connected to the internal space 34b) of the heat exchange portion 31 The function is also working. The gas refrigerant supplied to the inner space 35a above the header collecting pipe 35 by the aluminum heat exchanger-side gas pipe 38 is cooled by the heat exchanger- Exchanged at the upper part of the heat exchanging part 31 to partially liquefy and become a gas-liquid two-layer state, and the direction is changed in the header collecting tube 35 so that the remaining gas refrigerant is liquefied through the lower part of the heat exchanging part 31, And exits from the liquid pipe 39 on the heat exchanger side.

6 is a partially enlarged view showing a sectional structure of the heat exchanger 31 of the outdoor heat exchanger 13 when cut into a plane perpendicular to the longitudinal direction of the flat multi-walled vessels 33. As shown in Fig. The heat conductive fins 32 are flat plates made of thin aluminum, and a plurality of notches 32a extending in the horizontal direction are arranged in the heat conductive fins 32 in the vertical direction. The flat multi-vessel 33 has upper and lower planar portions serving as heat transfer surfaces, and a plurality of internal flow paths 331 through which refrigerant flows. The flat multi-wall blood vessels 33, which are slightly thicker than the upper and lower widths of the cutouts 32a, are arranged in plural stages at intervals in a state in which the planar portions face up and down (the side faces of the flat multi- And temporarily fixed in a state of being fitted in the notch 32a. As described above, the heat conductive fins 32 and the flattened blood vessels 33 are put into the furnace and soldered with the flattened blood vessels 33 sandwiched between the notches 32a of the heat conductive fins 32. [ Both ends of each flat multi-vessel 33 are fitted and soldered to the header collecting tubes 34 and 35, respectively.

The inner spaces 34a and 34b of the header collecting tube 34 and the inner spaces 35a and 35b of the header collecting tube 35 and the inner flow path 331 of the flattened blood vessel 33 are connected . A rectifying plate or the like for adjusting the flow of the refrigerant is disposed in the inner spaces 34a and 34b of the header collecting tube 34 and the inner spaces 35a, 35b, 35c, 35d and 35e of the header collecting tube 35 , And a detailed description of these details is omitted.

The aluminum outdoor heat exchanger 13 is fixed by the aluminum header assembly pipes 34 and 35 made of aluminum by a bracket made of aluminum to be described later on the side of the fan chamber side plate 23, 28). A method of fixing the outdoor heat exchanger (13) made of aluminum to the blower chamber side plate (23) will be described in detail.

(2-2-2) Blower room side plate

7 shows a left side view of the blower chamber side plate 23 as a structural component. Fig. 7 (b) shows a front view thereof, and Fig. 7 The right side view thereof is shown. 8A is a plan view of the blower chamber side plate 23 as a structural component and FIG. 8B is a sectional view taken along the line I-I in FIG. 7B.

The rear side end portion 232 located on the back side of the main body portion 231 of the fan chamber side lateral plate 23 is formed to be bent substantially perpendicularly to the direction of the machine room side with respect to the main body portion 231. [ The front side end portion 233 has a first end face 233a that is folded substantially vertically toward the inside of the blower chamber S1 (toward the machine room side direction) and a second end face 233b that is substantially perpendicular to the first end face 233a A second end surface 233b which is folded back to the main body portion 231 and extends substantially parallel to the main body portion 231 and a second end surface 233b which is folded substantially vertically toward the direction of the machine room side to form a first end surface 233a And a third end surface 233c extending substantially in parallel with the first end surface 233c.

The blower chamber side plate 23 is fixed to the blower chamber side front plate 25 by a male screw 40. A screw hole 233d into which the male screw 40 is screwed is formed in the third end face 233c and a burring process is performed in the screw hole 233d (see FIG.

A bracket 50 (see Figs. 9 and 10) made of aluminum and a resin cover 60 (see Figs. 11 and 12) described later are formed on the second end surface 233b of the blower- Respectively. A threaded hole 233e into which the male screw 41 is screwed is formed in the second end face 233b and a burring process is applied to the screw hole 233e in order to install these brackets 50 and the resin cover 60 (See Fig. 7 (b)). In addition, two concave portions 233f extending upward and downward are formed to increase the strength of the second end face 233b.

A bracket 50 made of aluminum and an opening 233g having a rectangular shape opened so as to penetrate the resin cover 60 are formed on the first end face 233a of the fan chamber side lateral plate 23 See Fig. 7 (c)). The first end face 233a is formed with three slits 233h to which fitting portions (not shown) formed on the folding end face 25b of the blower chamber side front plate 25 are fitted. And the fitting portion protruding from the blower chamber side front plate 25 is fitted in the slit 233h. Thereby, the bracket 50 made of aluminum and the resin cover 60 provided on the second end face 233b are covered with the blower-body-side front plate 25.

(2-2-3) Bracket made of aluminum

9 and 10 show a bracket 50 made of aluminum for installing the outdoor heat exchanger 13 on the blower chamber side plate 23. 9 (a) is a plan view of the bracket 50, FIG. 9 (b) is a front view of the bracket 50, and FIG. 9 (c) is a side view of the bracket 50. FIG.

The bracket 50 is formed, for example, by pressing one aluminum plate. Four fitting pieces 52 provided in the header collecting pipe 35 of the outdoor heat exchanger 13 are extended from the main body portion 51 of the bracket 50. The fitting piece 52 is formed into an arc shape along the outer periphery of the cylindrical header collection tube 35. One set of attachment pieces 53 is extended on the side of the bracket 50 opposite to the fitting piece 52. The mounting piece 53 is provided with a through hole 53a for allowing the male screw 41 to pass through when installed on the blower chamber side plate 23. [ The through hole 53a is an elliptical hole of m1 x n1. The longitudinal direction of the through hole 53a is the horizontal direction (longitudinal direction). The dimension of the through hole 53a of the bracket 50 (outer shape of the hole) is larger than the outer diameter d of the male screw 41. That is, there is a relation of the outer diameter d < hole diameters m1 and n1. In order to perform positioning of the bracket 50 and the resin cover 60, the mounting piece 53 is provided with a fitted portion 43b formed by cutting off part of the upper end.

A state in which the aluminum bracket 50 is soldered to the header collecting tube 35 is shown in Fig. The soldering of the bracket 50 to the header collecting tube 35 can be performed by forming a soldering material on the surface of the header collecting tube 35 in advance and by disposing the heat conductive fins 32 made of aluminum in the state in which the bracket 50 is temporarily fixed, Or flat aluminum multi-vessel 33 made of aluminum is placed in the furnace in a stacked state as shown in Fig. 5 or Fig.

(2-2-4) Resin cover

Since the bracket 50 is made of aluminum, if the bracket 50 is brought into direct contact with the blower chamber side plate 23 made of a steel plate, the corrosion of the bracket 50 is promoted due to the contact between the iron and aluminum. Therefore, the resin cover 60 shown in Figs. 11 and 12 is provided in the bracket 50, and the resin cover 60 is interposed between the blower chamber side lateral plate 23 and the bracket 50, 50 are installed. Fig. 11 (a) is a left side view of the resin cover, and Fig. 11 (b) is a bottom view of the resin cover. Fig. 12 (a) is a rear view of the resin cover, and Fig. 12 (b) is a right side view of the resin cover.

The resin cover 60 is formed by, for example, one injection molding. The main body portion 61 of the resin cover 60 includes a right side wall 61a and a left side wall 61b for forming the insertion portion 62 for installing the mounting piece 53 of the bracket 50, And has a front wall 61c and a front wall 61d. The mounting piece 53 is inserted into the inserting portion 62. In order to position the bracket 50 and the resin cover 60, the insertion portion 62 is provided with a fitting projection 63 protruding from a part of the ceiling surface. The fitting position of the bracket 50 and the resin cover 60 in the longitudinal direction is determined by fitting these fitting projections 63 into the fitted portion 53b of the fitting piece 53 of the bracket 50. [ The length from the lower end of the elliptical hole 53a of the fitting piece 53 of the bracket 50 to the lower side of the fitting piece 53 is set to be shorter than the length of the resin piece 60 from the lower end of the elliptical holes 61aa, Is shorter than the length to the lower side of the cover (60). With this structure, even if the resin cover 60 is shifted upward relative to the mounting piece 53, the lower side of the mounting piece 53 does not contact the blower chamber side lateral plate 23 of the opening 233g. The mounting pieces 53 inserted into the inserting portions 62 of the resin cover 60 are covered with the left and right side surfaces and the resin covers 60 on the upper side and the front side. The resin cover 60 is interposed between the side plate 23 on the side of the resin cover 60 and the mounting piece 53 so that the bracket 50 made of aluminum is attached to the side The bracket 50 can be fixed to the blower chamber side plate 23 without directly contacting the blower chamber side plate 23.

It is the right side wall 61a and the left side wall 61b that form the left and right side surfaces of the insertion portion 62. The left side wall 61b is provided with elliptical holes 61aa and 61ba at positions corresponding to the through holes 53a of the mounting pieces 53. [ The shape of the elliptical holes 61aa and 61ba is n1 x m1, and the through hole 53a is long in the horizontal direction, but long in the vertical direction. The dimension (outer shape of the hole) of the elliptical holes 61aa and 61ba is larger than the outer diameter d of the male screw 41. That is, there is a relation of the outer diameter d < hole diameters m1 and n1. The ends of the elliptical holes 61aa and 61ba of the resin cover 60 are obstructed by the constitution of the through holes 53a and the elliptical holes 61aa and 61ba so that the male screw 41 is provided on the front side of the through hole 53a. . As a result, corrosion of the front side of the through hole 53a due to contact between aluminum and iron is prevented.

A swelling portion 65 is formed on the back side of the right side wall 61a and a flange portion 64 is formed on the back side of the left side wall 61b.

(2-2-5) Installation of bracket and resin cover

13 shows a state in which an assembly made by covering a bracket 50 made of aluminum with a resin cover 60 is provided on the blower chamber side plate 23. The male screw 41 is screwed into the screw hole 233e of the blower chamber side plate 23. The width of the elliptical holes 61aa and 61ba is larger than the outer diameter of the male screw 41 in the forward and backward directions. Further, the width in the front-rear direction is wider than the elliptical holes 61aa and 61ba, and the resin cover 60 maintains the contact state in which the male screw 41 made of iron does not contact the bracket made of aluminum.

Further, the resin cover 60 is sandwiched by the bulged portion 65 into the opening portion 233g without a gap. The flange portion 64 intervenes between the end of the second end face 233b and the root of the fitting piece 53 of the bracket 50. [ The mounting piece 53 of the bracket 50 does not contact the end of the second end face 233b of the blower chamber side lateral plate 23. [ Naturally, since the left side wall 61b of the resin cover 60 is fitted between the mounting piece 53 and the second end face 233b, the mounting piece 53 and the second end face 233b are not in contact with each other Do not. As described above, the resin cover 60 keeps the bracket 50 made of aluminum and the blower chamber side plate 23 made of steel plate in a noncontact state.

(3) Characteristics of outdoor unit

(3-1)

In the outdoor unit 2 of the above-described refrigeration apparatus, the fitting piece 52 (fixed portion) of the bracket 50 made of aluminum is directly installed in the outdoor heat exchanger 13 made of aluminum, 50 are fixed to the side plate 23 (a non-aluminum metal housing) of the steel plate. The steel plate side plate 23 on the blower side has an opening 233g through which the mounting piece 53 of the bracket 50 made of aluminum penetrates. The mounting piece 53 of the bracket 50 made of aluminum is fixed through the opening 233g. The resin cover 60 (nonmetal member) is interposed between the bracket 50 made of aluminum and the blower chamber side plate 23 made of steel and forms a predetermined gap therebetween.

As a result, since the bracket 50 made of aluminum and the blower chamber side plate 23 made of steel plate are kept in contact with each other by the resin cover 60, corrosion caused by non-aluminum metal and aluminum metal Corrosion of the bracket 50 is prevented. In addition, the mounting piece 53 of the bracket 50 passes through the opening 233g and extends outward from the blower chamber S1. The bracket 50 and the resin cover 60 can be fastened to the blower chamber side plate 23 by the male screw 41 from the outside of the blower chamber side plate 23 of the outdoor unit 2. As described above, the bracket 50 made of aluminum for installing the outdoor heat exchanger 13 made of aluminum and the blower chamber side plate 23 made of steel can be fixed from the outside of the blower chamber side lateral plate 23, Corrosion of the aluminum bracket 50 can be prevented.

The left side wall 61b and the swollen portion 65 (first gap holding portion) of the resin cover 60 are provided between the opening 233g of the side plate 23 of the air blower and the aluminum bracket 50 And is disposed around the bracket 50 made of aluminum to have a gap therebetween. The gap between the opening 233g of the blower chamber side plate 23 and the periphery of the fitting piece 53 of the bracket 50 is formed by the left side wall 61b and the bulging portion 65, The non-aluminum metal and the aluminum metal are prevented from coming into contact with each other, and corrosion of the bracket 50 made of aluminum can be prevented from being caused by these contacts, and the effect of preventing corrosion is improved.

In the above-described embodiment, a resin member such as the resin cover 60 has been described as an example of the nonmetal member. However, the nonmetal member may be a member made of a polymer material such as a rubber member or a nonmetallic inorganic material such as a ceramic member none. Of course, the non-metallic member referred to herein is a member made of a material which does not promote corrosion between aluminum and aluminum alloy rather than non-aluminum metal. The through hole (through hole 53a) of the fixing portion also includes a hole having a notch extending partly to the end of the fixing portion (mounting piece 53).

(3-2)

The male screw 41 made of steel (latching support member) is attached to the side of the blower unit side plate 23 made of steel plate with the mounting piece 53 of the bracket 50 made of aluminum inserted into the resin cover 60 Tighten the resin cover (60). Since the resin cover 60 can be fastened by the male screw 41 made of steel, that is, the steel screw can be used, the bracket 50 made of aluminum and the plate- The outer unit 2 can be firmly fixed, and the strength of the out-room unit 2 can be improved.

(3-3)

The bracket 50 made of aluminum is provided with a through hole 53a larger than the male screw 41 made of iron on the mounting piece 53 and the male screw 41 made of iron does not come in contact with the bracket 50 made of aluminum Penetrate through the through hole 53a and fasten the resin cover 60 to the side of the side plate 23 of the steel plate for the blower room.

Since the bracket 50 penetrates the through hole 53a through the male screw 41 made of iron and the bracket can be strongly tightened by the engaging support member through the resin cover 60, have. Since the metal screw 41 of the iron does not contact the bracket 50 made of aluminum, it is possible to prevent the corrosion of the bracket due to the contact between the non-aluminum metal and aluminum, and to fix the aluminum heat exchanger 13 Can be performed firmly.

(3-4)

The bracket 50 made of aluminum has a through hole 53a formed in the mounting piece 53 larger than the male screw 41 made of iron. The threaded hole 233e (engaged structure of non-aluminum metal) formed on the blower chamber side plate 23 of the steel plate by the burring process is inserted into the through hole 53a so as not to come into contact with the bracket 50 made of aluminum, And the mounting piece 53 of the bracket 50 is fastened to the side plate 23 of the steel plate at the blower room side through the resin cover 60 in cooperation with the male screw 41 of the steel penetrating through the resin cover 60. The male screw 41 of steel is fastened to the bracket 50 of the bracket 50 through the resin cover 60 and the side plate 23 of the steel plate. This prevents the bracket 50 from being corroded by the contact of the non-aluminum metal with the aluminum by the male screw 41 of the metal thread and prevents the corrosion of the male screw 41 and the screw hole 233e of the blower chamber side plate 23 It is possible to firmly fix the aluminum outdoor heat exchanger 13 by cooperation.

(3-5)

The blower body side lateral plate 23 is folded so as to extend in a direction substantially orthogonal to the body portion 231 in a plan view (direction intersecting with the side surface constituted by the side plate) to form a first end face 233a Folded surface) is formed. An opening 233g is formed in the first end face 233a. The second end face 233b of the blower chamber side plate 23 is provided following the first end face 233a and extends in a direction substantially perpendicular to the first end face 233a Respectively. The resin cover 60 is fastened to the second end face 233b by the male thread 41 which is screwed into the screw hole 233e. Since the resin cover 60 is fastened to the second end face 233b as described above, the fitting piece 53 of the bracket 50 can be pulled out and inserted in a direction substantially parallel to the second end face 233b . As a result, assembly and maintenance of the outdoor unit 2 are facilitated, thereby reducing the manufacturing and maintenance costs.

(3-6)

The folded end face 25b of the steel plate front fan-side front plate 25 covers the second end face 233b of the fan chamber side lateral plate 23, as shown in Fig. 8 (b). The resin cover 60 has a right side wall 61a and a front wall 61d (second interval holding portion) interposed between the folded end face 25b and the mounting piece 53 of the bracket 50 made of aluminum I have. The front plate 25 on the blower body side and the bracket 50 made of aluminum are provided by the right side wall 61a and the front wall 61d even if the front plate 25 of the blower body is protruded toward the bracket 50. [ Is prevented. Since the bracket 50 and the resin cover 60 can be covered by the folded end face 25b of the front plate 25 of the blower mounted on the steel plate, the appearance can be finely finished with a small number of parts, Reduction is achieved.

(4) Variations

(4-1) Variation Example A

In the above-described embodiment, the case of using the aluminum-made member in the outdoor heat exchanger 13 and the like has been described. However, the aluminum-made member can replace the member made of the aluminum alloy, An aluminum alloy outdoor heat exchanger may be used in place of the bracket 13, and an aluminum alloy bracket may be used instead of the aluminum bracket 50. [

(4-2) Variation B

In the above-described embodiment, the description has been given of the case where the engagement support structure of the male screw 80 is the blower chamber side plate 23 on which the screw hole 233e is formed. However, as shown in Fig. 14, for example, the engageable supporting structure has a resin cover 60 penetrating the opening 233g and a butterfly screw (not shown) which is engaged with a male screw 48 passing through the bracket 50 (45). The male screw 48 (latching supporting part) may be engaged with the opening 233j so as to be hooked. Also in this configuration, the butterfly screws 45 can be installed from the outside of the blower chamber side lateral plate 23. In this case, a concave portion 66 for positioning the butterfly screw 45 may be formed in the resin cover 60. In this case, for example, as shown in Fig. 15, a fitting portion 61e and a fitted portion 53c for fixing the positional relationship between the resin cover 60 and the bracket 50 may be provided. In this case, the length of the upper and lower portions of the convex-shaped fitting portion 61e is longer than the length of the upper and lower portions of the cut-out portion 53c, and the fitting portion 53c is fitted into the fitting portion 61e, And the gap between the lower side of the mounting piece 53 of the air chamber side lateral plate 23 and the opening of the opening 233g is securely secured.

(4-3) Variation C

In the above embodiment, the case where iron or steel is used as the non-aluminum metal has been described, but other metals such as copper or a copper alloy may be used.

(4-4) Modification D

In the above embodiment, the main body portion 51 is provided with the sensor holding portion 44 formed in a concave shape. It can be considered that the shape of the sensor holding portion 44 forms the cylindrical hole 44a and the slit 44b. The slit 44b formed on the side opposite to the header collecting tube 35 is for bringing the temperature sensor held in the sensor holding portion 44 into contact with the header collecting tube 35. [

The bracket 50 is provided around the inner space 35a shown in Fig. The inner dimension of the cylindrical hole formed by the sensor holding portion 44 of the bracket 50 and the header collecting tube 35 is formed to be slightly smaller than the outer dimension of the case 54 of the temperature sensor 19. [ In such a case, the case 54 is slightly deformed by strongly pressing the temperature sensor 19 into the case 54, and the temperature sensor 19 is fixed in the cylindrical hole formed in the sensor holding portion 44.

1: Air conditioner
2: Outdoor unit
3: Indoor unit
13: outdoor heat exchanger
20: Unit casing
32:
33: Flat multi-vessel
34, 35: Header collection line
50: Bracket
60: Resin cover

Claims (7)

A heat exchanger 13 made of aluminum or aluminum alloy,
A bracket 50 made of aluminum or aluminum alloy having a fixing portion 53 and a fixing portion 52 directly attached to the heat exchanger made of aluminum or aluminum alloy,
A side plate 233g having an opening 233g penetrating through the fixing portion of the bracket made of aluminum or aluminum alloy and being fixed to the fixing portion of the bracket made of aluminum or aluminum alloy disposed through the opening, (23)
A nonmetal member (60) interposed between the bracket made of aluminum or aluminum alloy and the side plate of the non-aluminum metal to form a predetermined gap between the bracket made of aluminum or aluminum alloy and the side plate made of non-
And an outdoor unit. The method according to claim 1,
The non-metallic member includes a first gap retaining portion (61b) disposed around the bracket made of aluminum or aluminum alloy so as to provide a gap between the opening of the non-aluminum metal side plate and the bracket made of aluminum or aluminum alloy , 65). 3. The method of claim 2,
The non-aluminum metal-made latching support member (41) for fastening the non-metallic member to the side plate of the non-aluminum metal in the state where the fixing portion of the bracket made of aluminum or aluminum alloy is inserted into the non- And the outdoor unit of the refrigeration system. The method of claim 3,
In the bracket made of aluminum or aluminum alloy, a through hole (53a) larger than the non-aluminum metal engagement support member is formed in the fixing portion,
Wherein the non-aluminum metal latching support member passes through the through hole so as not to contact the bracket made of aluminum or aluminum alloy, and fastens the non-metallic member to the side plate made of non-aluminum metal. The method of claim 3,
In the bracket made of aluminum or aluminum alloy, a through hole (53a) larger than the non-aluminum metal engagement support member is formed in the fixing portion,
Aluminum metal cooperating with the engaging support member of non-aluminum metal penetrating through the through hole so as not to contact the bracket made of aluminum or aluminum alloy, and the fixing portion of the bracket is attached to the side plate of the non-aluminum metal through the non- Further comprising: a non-aluminum metal piercing support structure (233e, 45) for fastening. 6. The method according to any one of claims 3 to 5,
The side plate includes a first folded surface (233a) folded so as to extend in a direction intersecting with a side surface formed by the side plate in a plan view and having the opening formed thereon, and a second folded surface And a second folded surface (233b) folded so as to extend in a direction intersecting with the first folded surface,
And the non-metallic member is fastened to the second folded surface by the hooking support member. The method according to claim 6,
Further comprising a front plate (25) made of non-aluminum metal having a folded end face (25b) covering the second folded face of the side plate,
The non-metallic member further includes second gap holding portions (61a, 61d) interposed between the folded end face and the fixed portion of the bracket made of aluminum or aluminum alloy.

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