ES2641692T3 - Outdoor unit of refrigeration apparatus - Google Patents

Abstract

An outdoor unit (2) of a refrigeration appliance comprising a heat exchanger (13), a bracket (40, 50, 90) having a clamping part (42, 52) which is directly attached to the heat exchanger and a fixing part (43, 53) having a through hole (43a, 53a) to fix the bracket to a structural part (23, 24, 28) made of a metal other than aluminum, an anchoring part (80) having an external shape that is smaller than the through hole in the fixing part; and an anchored structure (70, 93) that works in conjunction with the anchoring part to retain the fixing part of the support in the structural part, characterized in that the outdoor unit (2) 15 further comprises: a non-metallic component ( 60, 92) which is interposed between the fixing part of the support and the structural part which are fixed to each other and is intended to place both in a non-contact state, and in which the heat exchanger is made of aluminum or of a aluminum alloy, the bracket is made of aluminum or an aluminum alloy and the anchoring part is made of a metal other than aluminum, and in which the non-metallic component maintains, in a state in which the anchoring part It is passing through the through hole in the fixing part, a non-contact state between the bracket made of aluminum or an aluminum alloy and the anchoring part made of a metal other than aluminum.

Description

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DESCRIPTION

Refrigeration device outdoor unit Technical field

The present invention relates to an outdoor unit of a refrigeration apparatus and particularly an outdoor unit of a refrigeration apparatus equipped with a heat exchanger made of aluminum or an aluminum alloy.

Prior art

In recent years, in order to manufacture lighter weight heat exchangers, aluminum and aluminum alloys have sometimes been used not only for heat exchanger fins but also for heat transfer tubes and tubes collector collection of heat exchanger. At the same time, the heat exchanger made of aluminum or an aluminum alloy is housed in a housing of an outdoor unit, for example, and due to advantages such as easy processing since the cost is common for a different metal of aluminum or of an aluminum alloy, such as a rolled steel for example, to be used for the housing.

Direct contact between the metal other than aluminum and the heat exchanger made of aluminum or an aluminum alloy leads to corrosion of the heat exchanger. Therefore, as described in patent document 1 (JP-A No. H7-234088) for example, usually a support made of aluminum or an aluminum alloy has been fixed to the collector collection tube of the Heat exchanger made of aluminum or an aluminum alloy and the heat exchanger has been connected by means of the support made of aluminum or aluminum alloy to a metal other than aluminum of a vehicle body of a car, for example.

Summary of the invention

<Technical problem>

However, in this configuration, the section in which the support made of aluminum or an aluminum alloy and the metal other than aluminum are in contact with each other causes corrosion of the support made of aluminum or an aluminum alloy. The corrosion of the support made of aluminum or an aluminum alloy triggers problems such as a poor external appearance and loosening of the heat exchanger joint.

JP 2004 183906 A discloses an air conditioner according to the preamble of claim 1, which allows easy fixation of a heat exchanger on a bottom plate without using the heat exchanger side plate. The heat exchanger comprises a retention part that has a pair of retention bodies with a storage part that stores a fork part and an articulation part and that can be opened and closed. The heat exchanger keeps the fork part in storage by means of a fixing device having a column body with a screw part formed by a through hole formed in one of the retention bodies corresponding to a through hole formed in the part of the bottom plate flange and a screw hole formed on the other of the retaining bodies opposite to the through hole. A screw passed through the screw hole in the through hole is threaded to the screw part to fix the heat exchanger on the bottom plate. The fixing device is made of synthetic resins.

It is an object of the present invention to prevent corrosion of a support made of aluminum or of an aluminum alloy to join a heat exchanger made of aluminum or of an aluminum alloy.

<Solution to the problem>

An outdoor unit of a refrigeration apparatus belonging to a first aspect of the present invention is an outdoor unit of a refrigeration apparatus comprising a heat exchanger made of aluminum or an aluminum alloy, a support made of aluminum or of an aluminum alloy that has a fastening part that is directly attached to the heat exchanger and a fixing part that has a through hole to fix the support to a structural part made of a metal other than aluminum and a nonmetallic component which is interposed between the fixing part of the support and the structural part that are fixed to each other and is intended to place both in a non-contact state, also comprising the outdoor unit of the refrigeration apparatus: an anchoring part made of a metal other than aluminum that has an external shape that is smaller than the through hole in the fixing part; and an anchored structure that works in conjunction with the anchoring part to fasten the fixing part of the support to the structural part by means of the non-metallic component, in which the non-metallic component maintains, in a state in which the part Anchoring is passing through the through hole in the fixing part, a contactless state between the support made of aluminum or an aluminum alloy and the anchoring part made of a metal other than aluminum.

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The nonmetallic component includes in this case an element comprising a polymeric material, such as a resin element or a rubber element, and an element comprising a non-metallic inorganic material, such as a ceramic element.

In the outdoor unit of the refrigeration apparatus belonging to the first aspect, in a state in which the support made of aluminum or an aluminum alloy is fixed to, and without being in contact with, the structural part made of a metal other than aluminum by means of the nonmetallic component, the nonmetallic component can maintain the anchoring part, whose external shape is smaller than the external shape of the through hole, in a contactless state in relation to the support made of aluminum or an aluminum alloy. Because the anchoring part made of a metal other than aluminum is not in contact with the support made of aluminum or an aluminum alloy, corrosion of the support caused by the corrosion that appears between the metal other than aluminum and aluminum metal

An outdoor unit of a refrigeration apparatus belonging to a second aspect of the present invention is the outdoor unit of the refrigeration apparatus belonging to the first aspect, which further comprises a housing made of a metal other than aluminum to house the exchanger of heat made of aluminum or an aluminum alloy, in which the housing made of a metal other than aluminum is the structural part made of a metal other than aluminum.

In the outdoor unit of the refrigeration apparatus belonging to the second aspect, the support made of aluminum or an aluminum alloy can fix the housing made of a metal other than aluminum by means of the non-metallic component.

An outdoor unit of a refrigeration apparatus belonging to a third aspect of the present invention is the outdoor unit of the refrigeration apparatus belonging to the second aspect, in which the nonmetallic component has an intercalated structure that is sandwiched from both sides with the fixing part of the support made of aluminum or an aluminum alloy, and the anchoring part and the anchored structure together hold the intercalated structure of the non-metallic component and the fixing part of the support made of aluminum or of an aluminum alloy.

In the outdoor unit of the refrigeration apparatus belonging to the third aspect, the fixing part of the support is held in a state in which it is sandwiched by the intercalated structure of the non-metallic component, so that the support can be fixed in a resistant manner by the nonmetallic component, and the heat exchanger fixation can be reinforced.

An outdoor unit of a refrigeration apparatus belonging to a fourth aspect of the present invention is the outdoor unit of the refrigeration apparatus of the third aspect, in which the anchoring part is a male screw made of a metal other than aluminum and the anchored structure is a nut separated from the structural part and capable of anchoring the male screw, a union plate having a screw hole capable of anchoring the male screw or a female threaded part in the nonmetallic component capable of anchoring the male screw

In the outdoor unit of the refrigeration apparatus belonging to the fourth aspect, using the male screw made of a metal other than aluminum, an anchoring part having the necessary strength at low cost can be obtained.

An outdoor unit of a refrigeration apparatus belonging to a fifth aspect of the present invention is the outdoor unit of the refrigeration apparatus belonging to the fourth aspect, in which the screw hole in the joint plate is deburred.

In the outdoor unit of the refrigeration apparatus belonging to the fifth aspect, the screw hole is deburred, so that the male screw can be adjusted in the joint plate and the number of parts can be reduced.

An outdoor unit of a refrigeration apparatus belonging to a sixth aspect of the present invention is the outdoor unit of the refrigeration apparatus of any of the first aspect to the fifth aspect, in which the support made of aluminum or an alloy of Aluminum has a plurality of fixing parts.

In the outdoor unit of the refrigeration apparatus belonging to the sixth aspect, the fixing of the support can be carried out in a plurality of places using the plurality of fixing parts, so that the stability of the fixing of the heat exchanger can be improved.

<Advantageous effects of the invention>

In the outdoor unit of the refrigeration apparatus belonging to the first aspect, corrosion of the support made of aluminum or of an aluminum alloy can be prevented to join the heat exchanger made of aluminum

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or of an aluminum alloy and problems such as poor external appearance and loosening that appears in the heat exchanger joint due to such corrosion or the like can be prevented.

In the outdoor unit of the refrigeration apparatus belonging to the second aspect, it becomes easier to make the outdoor unit compact.

In the outdoor unit of the refrigeration apparatus belonging to the third aspect, the fixing of the heat exchanger can be reinforced by the intercalated structure of the nonmetallic component and the effect of preventing the occurrence of problems such as loosening of the exchanger joint of heat

In the outdoor unit of the refrigeration apparatus belonging to the fourth aspect, the outdoor unit can be provided at a low cost because an anchoring part having the necessary strength can be obtained at a low cost.

In the outdoor unit of the refrigeration apparatus belonging to the fifth aspect, the number of parts can be reduced and the manufacturing cost of the outdoor unit can be reduced.

In the outdoor unit of the refrigeration apparatus belonging to the sixth aspect, the fixing of the heat exchanger becomes stable, so that problems such as the appearance of noise resulting from the vibration of the heat exchanger can be prevented.

Brief description of the drawings

FIG. 1 is a circuit diagram for describing an overview of the configuration of an air conditioning apparatus belonging to an embodiment;

FIG. 2 is a perspective view showing the external appearance of an outdoor unit;

FIG. 3 is a schematic plan view showing the outdoor unit in a state in which an upper panel has been removed;

FIG. 4 is a schematic rear view showing the general configuration of an outdoor heat exchanger;

FIG. 5 is a partial sectional view to describe the configuration of the outdoor heat exchanger;

FIG. 6 is an enlarged sectional view to describe the configuration of a heat exchange section of the outdoor heat exchanger;

FIG. 7 is an enlarged side view of a blower chamber side panel;

FIG. 8 (a) is a perspective view showing an aspect of a support made of aluminum, FIG. 8 (b) is a plan view of the support, FIG. 8 (c) is a front view of the support and FIG. 8 (d) is a side view of the support;

FIG. 9 is a partially enlarged perspective view showing the support welded to a collector collection tube;

FIG. 10 (a) is a perspective view showing another aspect of a support made of aluminum, FIG. 10 (b) is a plan view of the support, FIG. 10 (c) is a front view of the support and FIG. 10 (d) is a side view of the support;

FIG. 11 (a) is a plan view of a resin cover, FIG. 11 (b) is a front view of the resin cover and FIG. 11 (c) is a bottom view of the resin cover;

FIG. 12 (a) is a left side view of the resin cover, FIG. 12 (b) is a rear view of the resin cover and FIG. 12 (c) is a right side view of the resin cover;

FIG. 13 (a) is a sectional view taken along line I-I of FIG. 12 (b) as seen in the direction of the arrows, FIG. 13 (b) is a sectional view taken along line II-II of FIG. 12 (b) as seen in the direction of the arrows and FIG. 13 (c) is a sectional view taken along line III-III of FIG. 12 (c) as seen in the direction of the arrows;

FIG. 14 (a) is a plan view of a joint plate and FIG. 14 (b) is a front view of the union plate;

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FIG. 15 (a) is a left side view of the joint plate and FIG. 15 (b) is a right side view of the joint plate;

FIG. 16 is an exploded assembly diagram of the support and the resin cover;

FIG. 17 is a perspective view showing a state in which the support, the resin cover and the joint plate are joined; Y

FIG. 18 is a perspective view showing a state of the outdoor unit in which the panels of a unit housing other than a lower panel have been removed.

Description of the embodiment

(1) General configuration of the air conditioning apparatus

A refrigeration apparatus used in an air conditioning apparatus will be described as a refrigeration apparatus belonging to an embodiment of the present invention. FIG. 1 is a circuit diagram showing an overview of an air conditioning apparatus. An air conditioning apparatus 1 is configured by an outdoor unit 2 and an indoor unit 3. The air conditioning apparatus 1 is an apparatus used to cool and heat rooms in a building by performing a compression refrigeration cycle operation. steam. The air conditioning apparatus 1 is equipped with the outdoor unit 2 that serves as a heat source unit, with the indoor unit 3 that serves as a harnessing unit and with refrigerant connection tubes 6 and 7 that interconnect the air conditioning unit. outdoor 2 and indoor unit 3.

In the air conditioning apparatus 1 configured by connecting the outdoor unit 2, the indoor unit 3 and the refrigerant connection tubes 6 and 7, the refrigeration apparatus has a configuration in which a compressor 11, a switching valve four-way 12, an outdoor heat exchanger 13, an expansion valve 14, an indoor heat exchanger 4 and an accumulator 15 and the like are interconnected by coolant tubes. The refrigeration apparatus is charged with refrigerant and a refrigeration cycle operation is performed in which the refrigerant is compressed, cooled, its pressure reduced, heated and evaporated, and compressed again after it. During operation, a stop valve of the liquid refrigerant side 17 and a stop valve of the gas refrigerant side 18 of the outdoor unit 2 which are connected to the refrigerant connection tubes 6 and 7, respectively, are both located In an open state.

During the cooling operation, the four-way switching valve 12 is switched to a state indicated by the continuous lines in FIG. 1, that is, a state in which the discharge side of the compressor 11 is connected to the gas side of the outdoor heat exchanger 13 and in which the suction side of the compressor 11 is connected to the gas side of the heat exchanger indoor heat 4 by means of the accumulator 15, the stop valve of the gas refrigerant side 18 and the refrigerant connection tube 7. In the cooling operation, the air conditioning apparatus 1 causes the outdoor heat exchanger 13 functions as a condenser of the compressed refrigerant in the compressor 11 and causes the indoor heat exchanger 4 to function as an evaporator of the refrigerant that has condensed in the outdoor heat exchanger 13.

During the heating operation, the four-way switching valve 12 is switched to a state indicated by the broken lines in FIG. 1, that is, a state in which the discharge side of the compressor 11 is connected to the gas side of the indoor heat exchanger 4 by means of the stop valve of the gas refrigerant side 18 and the refrigerant connection tube 7 and in which the suction side of the compressor 11 is connected to the gas side of the outdoor heat exchanger 13. In the heating operation, the air conditioning apparatus 1 causes the indoor heat exchanger 4 to function as compressed refrigerant condenser in compressor 11 and causes the outdoor heat exchanger 13 to function as an evaporator of the refrigerant that has condensed in the indoor heat exchanger 4.

(2) Detailed configuration of the air conditioner (2-1) Indoor unit

The indoor unit 3 is installed as a result of being mounted on a wall surface in a room or of being embedded in or suspended from a ceiling in a room of a building or the like. The indoor unit 3 has the indoor heat exchanger 4 and an indoor fan 5. The indoor heat exchanger 4 is, for example, a fin and tube heat exchanger of transverse fin type configured by transfer tubes of heat and various fins; during the cooling operation, the indoor heat exchanger 4 functions as a refrigerant evaporator to cool the room air and, during the heating operation, the indoor heat exchanger 4 functions as a refrigerant condenser to heat the room air .

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(2-2) Outdoor unit

The outdoor unit 2 is installed outside a building or similar and is connected to the indoor unit 3 installed in the room by means of the refrigerant connection tubes 6 and 7. As shown in FIG. 2 and FIG. 3, the outdoor unit 2 is equipped with a substantially cubic unit housing 20. As shown in FIG. 3, the outdoor unit 2 has a structure (a so-called trunk structure) in which a blower chamber S1 and a machine chamber S2 are formed as a result of which the interior space of the unit housing 20 is divided into two by a division panel 28 that extends in the vertical direction. As shown in FIG. 3, the outdoor heat exchanger l3 and an outdoor fan 16 and the like are arranged in the blower chamber S1. In addition, the compressor 11 and the accumulator 15 shown in FIG. 3 and the four-way switching valve 12, the expansion valve 14, the liquid refrigerant side stop valve 17, and the gas refrigerant side stop valve 18 and the like not shown in FIG. 3 are arranged in the machine chamber S2.

The unit housing 20 is configured to include an upper panel 21, a lower panel 22, a blower chamber side side panel 33, a machine chamber side side panel, 24, a front camera side panel blower 25 and a front panel of machine chamber side 26. The upper panel 21 is a panel element made of a rolled steel that configures the upper surface section of the unit housing 20. The lower panel 22 is an element of panel made of a rolled steel that configures the lower surface section of the unit housing 20. The side panel of the blower chamber side 23 is a panel element made of a rolled steel that configures the side surface section of the housing of unit 20 next to blower chamber S1. The side panel of machine chamber side 24 is a panel element made of a laminated steel that configures part of the side surface section of the unit housing 20 close to the machine chamber S2 and the rear surface section of the unit housing 20 near machine chamber S2. The front panel of the blower chamber side 25 is a panel element made of a rolled steel that configures the front surface section of the unit housing 20 in front of the blower chamber S1 and part of the front surface section of the unit housing 20 in front of the machine chamber S2. The front panel of the blower chamber side 25 and the side panel of the blower chamber side 23 can also be formed integrally by pressing and forming a single sheet of rolled steel.

The outdoor unit 2 is configured to suck outdoor air into the blower chamber S1 inside the unit housing 20 from the rear surface part and the side surface of the unit housing 20 and blow out the air from outside sucked in from the front surface of the unit housing 20. For this reason, an air inlet 20a for the outside air sucked into the interior of the blower chamber S1 inside the unit housing 20 is formed between the part end of the side panel of the blower chamber side 23 on the rear surface side and the end portion of the side panel of the machine chamber side 24 on the side of the blower chamber S1 and an air inlet 20b for the outside air is formed in the side panel of the blower chamber side 23. In addition, an air outlet 20c for blowing outside the outside air that has been sucked into the inside of the blower chamber S1 is arranged on the front panel of the blower chamber side 25. The front side of the air outlet 20c is covered by a fan grill 25.

The outdoor heat exchanger 13 is permanently arranged in the upward and downward direction (vertical direction) in the blower chamber S1, which is a space covered by the side panel of the blower chamber side 23, the front panel of Blower chamber side 25, the division panel 28 and a section of the machine chamber side side panel 24. The outdoor heat exchanger 13 has an L-shape as seen in a plan view and opposes to the air inlets 20a and 20b. The outdoor heat exchanger 13 is a heat exchanger made of aluminum. The outdoor heat exchanger 13 made of aluminum is attached, in order to prevent corrosion, by the brackets or the like made of aluminum described below to the unit housing 20 such that the outdoor heat exchanger 13 does not it is in direct contact with the upper panel 21, the lower panel 22, the side panel of the blower chamber side 23, the side panel of the machine chamber side 24 and the division panel 28 and the like which are made of rolled steel . One end of the outdoor heat exchanger 13 is connected to the four-way switching valve 12, and the other end of the outdoor heat exchanger 13 is connected to the expansion valve 14.

(2-2-1) Outdoor heat exchanger

Next, the configuration of the outdoor heat exchanger 13 using FIG. 4, FIG. 5 and FIG. 6. The heat exchanger made of aluminum is configured by heat transfer fins 32 made of aluminum, flat tubes with multiple holes 33 made of aluminum and collector collection tubes 34 and 35 made of aluminum. The outdoor heat exchanger 13 is equipped with a heat exchange section 31 which causes heat exchange between the outside air and the refrigerant to be carried out and the heat exchange section 31 is configured by the various transfer fins of heat 32 made of aluminum and by the various flat tubes with multiple holes 33 made of aluminum. The heat exchange section 31 has an upper heat exchange section 31a, in which flat tubes with multiple gas coolant holes 33a are arranged which are included between the various flat tubes with multiple holes.

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33 and allow gaseous refrigerant or coolant to flow in a biphasic liquid and gaseous state through it when the outdoor heat exchanger 13 functions as a condenser, and a lower heat exchange section 31b, in which flat tubes with multiple are connected Liquid refrigerant holes 33b that are included between the various flat tubes with multiple holes 33 and allow the refrigerant to flow in the liquid and gaseous biphasic state or liquid refrigerant therethrough.

Flat tubes with multiple holes 33 function as heat transfer tubes and cause heat to move between the heat transfer fins 32 and the outside air is exchanged between the refrigerant flowing inside and the transfer fins of heat 32.

The outdoor heat exchanger 13 is equipped with the collector collection tubes 34 and 35 made of aluminum which are each arranged on both ends of the heat exchange section 31. The collector collection tube 34 has a structure of cylindrical pipe made of aluminum and has interior spaces 34a and 34b divided by a separator 34c made of aluminum. A gas tube of heat exchanger side 38 made of aluminum is connected to the inner space 34a at the top of the collector collection tube 34 and a liquid tube of heat exchanger side 39 made of aluminum is connected to the space inside 34b at the bottom of the collector collection tube 34.

The collector collection tube 35 has a cylindrical pipe structure made of aluminum and the interior spaces 35a, 35b, 35c, 35d and 35e are formed in the collector collection tube 35 as a result of which the interior space of the tube is divided collector collection 35 by separators 35f, 35g, 35h and 35i made of aluminum. The various flat tubes with multiple gas coolant holes 33a connected to the interior space 34a at the top of the collector collection tube 34 are connected to the three interior spaces 35a, 35b and 35c of the collector collection tube 35. In addition, the Various flat tubes with multiple holes of liquid refrigerant 33b connected to the interior space 34b at the bottom of the collector collection tube 34 are connected to the three interior spaces 35c, 35d and 35e of the collector collection tube 35.

In addition, the interior space 35a and the interior space 35e of the collector collection tube 35 are interconnected by a connection tube 36 made of aluminum and the interior space 35b and the interior space 35d are interconnected by a connection tube 37 made of aluminum . The interior space 35c also fulfills the function of interconnecting part of the interior space at the top of the heat exchange section 31 (the section connected to the interior space 34a) and part of the interior space at the bottom of the heat exchange section heat 31 (the section connected to the interior space 34b). Due to these configurations, during the cooling operation (when the outdoor heat exchanger 13 functions as a condenser) for example, the gaseous refrigerant supplied to the interior space 35a at the top of the collector collection tube 35 by the gas tube On the side of heat exchanger 38 made of aluminum it performs heat exchange at the top of the heat exchange section 31, some of this refrigerant is liquefied so that the refrigerant changes to a biphasic liquid and gaseous state, the refrigerant in the biphasic liquid and gaseous state it returns to the collector collection tube 35 and travels through the bottom of the heat exchange section 31 in which the remaining gaseous refrigerant is liquefied and the liquid refrigerant exits through the tube of heat exchanger side liquid 39 made of aluminum.

FIG. 6 is a partially enlarged view showing the cross-sectional structure of the heat exchange section 31 of the outdoor heat exchanger 13 cut by a plane perpendicular to the longitudinal direction of the flat tubes with multiple holes 33. The transfer fins Heat 32 are flat plates made of fine aluminum and a plurality of cutouts 32a extending in the horizontal direction are formed adjacent to each other in the upward and downward direction in each of the heat transfer fins 32. The tubes multi-hole planes 33 have upper and lower flat portions that serve as heat transfer surfaces and a plurality of inner flow paths 331 through which the refrigerant flows. The flat tubes with multiple holes 33, which are slightly thicker than the width up and down of the cuts 32a are arranged in a plurality of rows separated from one another in a state in which the flat parts are oriented upwards and towards below (a state in which the side surfaces of the flat tubes with multiple holes 33 are arranged opposite each other) and the flat tubes with multiple holes 33 are temporarily fixed in a state in which they have been adjusted inside the cutouts 32a. The heat transfer fins 32 and the flat tubes with multiple holes 33 are welded together in a state in which the flat tubes with multiple holes 33 have been fitted inside the cutouts 32a in the heat transfer fins 32 of this way. In addition, both ends of each of the flat tubes with multiple holes 33 fit inside and are welded to the collector collection tubes 34 and 35.

The interior spaces 34a and 34b of the collector collection tube 34 and the interior spaces 35a, 35b, 35c, 35d and 35e of the collector collection tube 35 are connected to the internal flow paths 331 in the flat tubes with multiple holes 33 Spacer plates and the like to direct the flow of the refrigerant are arranged in the interior spaces 34a and 34b of the collector collection tube 34 and the interior spaces 35a, 35b, 35c, 35d and 35e of the collector collection tube 35, but will omit the description of the details like these.

(2-2-2) Blower chamber side panel

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FIG. 7 is an enlarged side view of the side panel of the blower chamber side 23. The screw holes 23a and 23b are formed on the front side of the air inlet 20b on the side panel of the blower chamber side 23 made of steel. laminate. The supports 40 and 50 made of aluminum are fixed to the side panel of the side of the blower chamber 23 by means of male screws 80 or the like made of iron (see FlG. 16) which are threaded inside the screw holes 23a and 23b , by means of which the collector collection tube 35 made of welded aluminum is fixed to the supports 40 and 50 made of aluminum.

(2-2-3) Brackets made of aluminum

FIGS. 8 (a) to 8 (d) show the support 40 made of aluminum for joining the outdoor heat exchanger 13 to the side panel of the blower chamber side 23. FIG. 8 (a) is a perspective view of the support 40 made of aluminum, FIG. 8 (b) is a plan view of the support 40, FIG. 8 (c) is a front view of the support 40 and FIG. 8 (d) is a side view of the support 40.

The support 40 is formed, for example, by pressing a single aluminum foil. Two grip parts 42 that are attached to the collector collection tube 35 of the outdoor heat exchanger 13 extend from a body part 41 of the support 40. The grip parts 42 are each formed in a circular arc shape to fit the outer periphery of the cylindrical manifold collection tube 35. Two union pieces 43 extend from the side of the support 40 opposite the side with the grip parts 42. A through hole 43a to allow a screw to pass through it by attaching the support 40 to the side panel of the blower chamber side 23 is arranged in each of the connecting pieces 43. The through holes 43a are elongated holes of m1 x n1. In order to place the support 40 and a resin cover 60, homologous adjustment elements 43b formed as a result of which parts of the upper edge end portions of the joint pieces 43 are disposed are arranged in the joint pieces 43 A sensor retaining part 44 formed concavely is disposed in the body part 41. It can be seen that the shape of the sensor retaining part 44 forms a tubular hole 44a and a recess 44b. The slit 44b formed on the side opposite the collector collection tube 35 allows a temperature sensor 19 retained in the sensor retaining portion 44 to be in contact with the collector collection tube 35.

FIG. 9 shows a state in which the support 40 made of aluminum has been welded to the collector collection tube 35. Welding of the support 40 to the collector collection tube 35 is carried out, for example, by forming a welding filler metal in the surface of the collector collection tube 35 in advance and, in a state in which the support 40 has been temporarily attached to the collector collection tube 35, placing everything in an oven in a state in which the transfer fins of Heat 32 made of aluminum and flat tubes with multiple holes 33 made of aluminum have been put together as shown in FIG. 5 and in FIG. 6.

The support 40 is attached to the collector collection tube 35 in the area around the interior space 35a shown in FIG. 5. The internal dimension of a cylindrical hole formed by the sensor retaining part 44 of the support 40 and by the collector collection tube 35 is formed slightly smaller than the external dimension of a housing of a temperature sensor 19 (see Figure 9). By strongly pressing the temperature sensor 19 inside the housing, the temperature sensor 19 is fixed in the cylindrical hole.

FIGS. 10 (a) to 10 (d) show the support 50 made of aluminum, FIG. 10 (a) a perspective view, FIG. 10 (b) a plan view, FIG. 10 (c) a front view and FIG. 10 (d) a side view. Like the support 40, the support 50 is also formed, for example, by pressing a single aluminum foil. The support 50 differs in shape with respect to the support 40 but has the same configuration as that of the support 40 because it has a body part 51, grip parts 52 and joint parts 53. In addition, a through hole 53a is also formed in each of the joint pieces 53, but the positions in which the through holes 53a are formed differ from those of the through holes 43a in the joint pieces 43. The through holes 53a are also elongated holes m1 x n1. In order to place the support 40 and the resin cover 60, homologous adjustment elements 53b formed as a result of which parts of the end parts of the joint pieces 53 are disposed are arranged in the joint pieces 53. The sensor of temperature 19 is not attached to the support 50, so that a configuration such as that of the sensor retention part 44 in the support 50 is not formed.

(2-2-4) Resin cover

The supports 40 and 50 are made of aluminum, so that if the supports 40 and 50 are put in direct contact with the side panel of the blower chamber side 23 made of rolled steel, the corrosion of the supports 40 and 50 for the contact between iron and aluminum, which are metals with different ionization tendencies. Therefore, the resin cover 60 shown in FIGS. 11 (a) to 11 (c), in FIGS. 12 (a) to 12 (c) and in FIGS. 13 (a) to 13 (c) joins the brackets 40 and 50 and the brackets 40 and 50 are attached to the side panel of the blower chamber side 23 in a state in which the resin cover 60 is interposed between the side panel of blower chamber side 23 and brackets 40 and 50. FIG. 11 (a) is a plan view of the resin cover, FIG. 11 (b) is a front view of the resin cover and FIG. 11 (c) is a bottom view of the resin cover. FIG. 12 (a) is a left side view of the resin cover, FIG. 12 (b) is a rear view of the

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resin cover and FIG. 12 (c) is a right side view of the resin cover. In addition, FIG. 13 (a) is a sectional view taken along line I-I of FIG. 12 (b) as seen in the direction of the arrows, FIG. 13 (b) is a sectional view taken along line II-II of FIG. 12 (b) as seen in the direction of the arrows and FIG. 13 (c) is a partially enlarged sectional view taken along line III-III of FIG. 12 (c) as seen in the direction of the arrows.

The resin covers 60 are used for the two supports 40 and 50 although the shapes of the supports 40 and 50 differ from each other. For this reason, the shape of the resin cover 60 is complex, but the resin cover 60 can be formed, for example, by injection molding at one time. A body part 61 of the resin cover 60 has an insert part 62 and an insert part 63 for joining the joint pieces 43 and 53 of the supports 40 and 50. Among the joint pieces 43 and 53, of those that the supports 40 and 50 each have two, respectively, the connecting pieces 43 and 53 whose shapes are the same between them are inserted inside the insert part 62. A recess 65 in the front part of the part The body 61 has a shape that adapts to the shape of the body part 41 of the support 40 and is processed in this way in order to join the temperature sensor 19.

In order to place the support 40 or 50 and the resin cover 60, adjustment projections 62c and 63c projecting from parts of the upper surfaces of the insert parts 62 and 63 are arranged in the insert parts 62 and 63. The adjustment projections 62c and 63c are adjusted inside the homologous adjustment elements 43b and 53b of the joining pieces 43 and 53 of the supports 40 and 50 to thereby define the positioning relationship between the supports 40 and 50 and the resin cover 60 in the front and rear direction. The joining pieces 43 and 53 whose shapes differ from each other between the supports 40 and 50 are inserted inside the insert part 63, in which the upper surface, the rear surface and the right and left side surfaces are enclosed . Leaving the insertion part 63 open at the two sites of its front surface and its lower surface, the joining pieces 43 and 53 can be housed whose shapes differ from each other.

Additionally, the right and left side surfaces of the joining pieces 43 and 53 inserted inside the insert part 62 and the insert part 63 are covered by the resin cover 60.

For this reason, the resin cover 60 is interposed between the side panel of the blower chamber side 23 placed on a side surface side of the resin cover 60 and the joining pieces 43 and 53, and the supports 40 and 50 they can be fixed to the side panel of the blower chamber side 23 without the supports 40 and 50 made of aluminum directly touching the side panel of the blower chamber side 23.

An internal wall 62a and an external wall 62b form the right and left side surfaces of the insert part 62. Open parts 62aa and 62ba are formed in the external wall 62a and 62b in positions corresponding to the through holes 43a and 53a in the parts of union 43 and 53. The shape of the section superimposed between the open part 62aa and the open part 62ba as seen in a side view is a shape that is substantially the same as that of an elongated hole of m1 x n1 thereof size than through holes 43a and 53a but has an additional trimmed part.

An inner wall 63a and an outer wall 63b form the left and right side surfaces of the insert part 63. The positions of the through holes 43a and 53a in the connecting pieces 43 and 53 with the different shapes are different, so that two open parts 63ba and 63bb are formed in the outer wall 63b. Open parts 63aa and 63ab are also formed which are larger than the open parts 63ba and 63bb in the inner wall 63a in positions corresponding to the open parts 63ba and 63bb. Openings that pass completely through the inner walls 62a and 63a to the outer walls 62b and 63b are formed by the open part 62ba, the open part 62aa, the open parts 63ba and 63bb and the open parts 63aa and 63ab. The shape of the overlapping section between the open part 63aa and the open part 63ba as seen in a side view is a shape that is substantially the same as that of an elongated hole of m1 x n1 of the same size as the through holes 43a and 53rd but it has an additional cropped part. In addition, the shape of the overlapping section between the open part 63ab and the open part 63bb as seen in a side view is a shape that is the same as that of an elongated hole of m1 x n1 of the same size as the through holes 43rd and 53rd.

In addition, observing FIG. 12 (b), an insert part 64 having an opening in the rear surface side is formed in the outer wall 62b. A side plate part 72 of a junction plate 70 described below is inserted into the insert part 64. Because the insert part 64 is formed inside the outer wall 62b, there is an element of resin division 62bc between the supports 40 and 50 made of aluminum inserted inside the insert part 62 and the union plate 70 made of iron inserted inside the insert part 64.

(2-2-5) Union plate

A union plate 70 is fitted inside the resin cover 60 so that the supports 40 and 50 and the resin cover 60 with male screws are attached to the side panel of the blower chamber side 23. FIGS. 14 (a) and 14 (b) and FIGS. 15 (a) and 15 (b) show the junction plate 70, FIG. 14 (a) a plan view, being the

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FIG. 14 (b) a front view, FIG. 15 (a) a left side view and FIG. 15 (b) a right side view.

Side plate portions 72 and 73 are formed that extend vertically from the left and right end edges of a horizontal flat plate base part 71 in the joint plate 70. The base part 71 has a substantially rectangular shape with a recess 71c in the front. The width of the base part 71 is substantially equal to the distance between the inner walls 62a and 63a of the resin cover 60. For this reason, when the joint plate 70 is fitted inside the resin cover 60 in a state in which a front end part 71a of the base part 71 has been brought into contact with front stops 61a of the body part 61 of the resin cover 60, the side plate part 72 of the joint plate 70 is inserted inside the insert part 64 of the resin cover 60 and the side plate part 73 is in contact with and is along the inner wall 63a of the resin cover 60. A contact part 73c of the side plate part 73 makes contact with the area around the rear surface side of the insert part 63 and the front end part 71a of the base part 71 makes contact with the front stops 61a, so that the union plate 70 does not move forward in r elamination with the resin cover 60. In a state in which the union plate 70 does not move forward in this manner, the union plate 70 also does not move towards the rear of the resin cover 60 because a rear end part 71b of the base part 71 makes contact with a rear stop 61b of the body part 61 of the resin cover 60.

The screw holes 72a, 73a and 73b formed in the side plate portions 72 and 73 coincide, as seen in a side view, with the open part 62aa of the inner wall 62a of the resin cover 60, with the parts open 63aa and 63ab of the inner wall 63a, with the open part 62ba of the outer wall 62b and with the open parts 63ba and 63bb of the outer wall 63b. In addition, the external dimension of the male screws described below that are threaded inside the screw holes 72a, 73a and 73b is smaller than the internal dimensions of the overlapping section between the open parts 62aa and 62ba, of the section superimposed between the open parts 63aa and 63ba and of the section superimposed between the open parts 63ab and 63bb as seen in a side view. In addition, the external dimension of the male screws is smaller than the internal dimension of the through holes 43a and 53a in the supports 40 and 50 made of aluminum. For this reason, in a state in which the union plate 70 is properly attached to the resin cover 60, the male screws can be attached to the screw holes 72a, 73a and 73b in the union plate 70 in such a way that the male screws do not contact the supports 40 and 50 or the resin cover 60. The screw holes 72a, 73a and 73b are formed by deburring.

When the union plate 70 is attached to the resin cover 60, the upward movement of the union plate 70 is suppressed as a result of the upper part of the side plate part 72 making contact with the upper surface of the part of insertion 64.

(2-2-6) Mounting brackets, resin cover and joint plate

FIG. 16 shows a mounting state in which the bracket 40 made of aluminum, the resin cover 60 and the union plate 70 made of iron are being fastened with the male screw 80 made of iron to the side panel of the blower chamber side 23 made of rolled steel. In addition, FIG. 17 shows a state in which the support 40 made of aluminum, the resin cover 60 and the union plate 70 made of iron have been mounted in a state in which the side panel of the blower chamber side 23 has been removed As shown in FIG. 17, one of the connecting pieces 43 of the support 40 is attached to an air blocking plate 100.

The union plate 70 made of iron is disposed inside the resin cover 60 in a state in which the union plate 70 is separated by the resin cover 60 of the support 40. The male screw 80 that passes through of the through hole 43a in the holder 40 and the open part 63aa etc. of the resin cover 60 fits inside the screw hole 73a in the joint plate 70.

In addition, as shown in FIG. 18, the collector collection tube 34 of the outdoor heat exchanger 13 is fixed to the side panel of the machine chamber side 24 and to the division panel 28 by the supports 90 made of aluminum, by the resin covers 92 and by Union plates 93 made of iron. The supports 90 made of aluminum, the resin covers 92 and the joining plates 93 made of iron have similar structures to those of the supports 40 and 50, the resin cover 60 and the joining plate 70, so that it will be omitted The description of them. The supports 90 also have two joining pieces, each similar to the supports 40 and 50, but the two joining pieces are fixed to the side panel of machine chamber side 24 and to the division panel 28. Because their sites of union are different, the supports 90 made of aluminum, the resin covers 92 and the union plates 93 made of iron can also have their structures changed with respect to those of the supports 40 and 50, the resin cover 60 and the union plate 70.

(3) Characteristics of the outdoor unit

(3-1)

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In the outdoor unit 2, the gripping pieces (a clamping part) characterized by the gripping pieces 42 and 52 of the support characterized by the brackets 40, 50 and 90 made of aluminum are joined directly to the outdoor heat exchanger 13 made of aluminum and the connecting parts (a fixing part) characterized by the connecting parts 43 and 53 are fixed by means of the resin cover 60 or 92 to the side panel of the blower chamber side 23 (a composite structural part by a metal other than aluminum), to the side panel of machine chamber side 24 (a structural part made of a metal other than aluminum) or to the division panel 28 made of rolled steel (a structural part composed of a metal other than aluminum), so that aluminum and rolled steel are not in contact with each other.

The support 40 or 50 made of aluminum is held together by the male screw 80 (an anchoring part) made of iron (made of a metal other than aluminum) and by the joining plate 70 (an anchored structure) made of iron and is fixed to the side panel of blower chamber side 23 made of rolled steel. In addition, the support 90 made of aluminum is also held together by a male screw (not shown in the drawings) made of iron and by the union plate 93 (an anchored structure) made of iron and is fixed to the side panel of machine chamber side 24 and division 28 panel made of rolled steel.

However, an external diameter d (external shape) of the male screw 80 (an anchoring part) is smaller than the dimension (external hole shape) of the through hole 43a or 53a in the support 40 or 50. That is, there is the relationship: an external diameter characterized in that the external diameter <an orifice diameter characterized by the diameters ml, n1 of holes. Additionally, the support 40, 50 or 90 made of aluminum is secured by means of the resin cover 60 (a non-metallic component) and the resin cover 92 (a non-metallic component) to a structural part characterized by the side panel of the blower chamber side 23, by the side panel of the machine chamber side 24 and the division panel 28, and the support 40, 50 or 90 made of aluminum is maintained by the resin cover (a non-component metal) characterized by resin covers 60 and 92 in a non-contact state in which the support 40, 50 or 90 is not in contact with the male screw 80 made of iron (made of a metal other than aluminum) that passes through the through hole 43a or 53a in the connecting pieces (fixing parts) characterized by the connecting parts 43 and 53. The through hole 43a or 53a in the fixing part can also be a hole having a cutout in which a part of it reaches the extrem part or of the fixing part (characterized by the connecting pieces 43 and 53).

In this way, the male screw 80 made of iron is not in contact with the support 40, 50 or 90 made of aluminum, so that the corrosion of the supports caused by the corrosion that appears between the iron is prevented (a different metal aluminum) and aluminum metal. Corrosion can be prevented in the surroundings of the joining pieces 43 and 53 of the supports 40, 50 and 90 made of aluminum to join the outdoor heat exchanger 13 made of aluminum and problems such as loosening that appears can be prevented at the junction of the outdoor heat exchanger 13 due to such corrosion or the like.

Obviously, the resin cover 60 or 92 is interposed between the joining pieces 43 or 53 of the support 40, 50 or 90 and at least one of between the side panel of the blower chamber side 23, the side panel of the chamber side of machine 24 and division panel 28 and keep both in a contactless state. For this reason, the side panel of the blower chamber side 23, the side panel of the machine chamber side 24 and the division panel 28 (examples of a structural part) made of rolled steel (made of a metal other than aluminum ) do not make contact with the support characterized by the support 40, 50 and 90 made of aluminum, so that the corrosion of the support caused by the corrosion that appears between the steel (metal other than aluminum) and the aluminum metal between the supports and the structural parts.

In the above embodiment, resin elements such as resin covers 60 and 92 are taken as an example and described as a nonmetallic component, but the nonmetallic component can also be an element comprising a polymeric material, such as a rubber element, or an element comprising a non-metallic inorganic material, such as a ceramic element. Obviously, the non-metallic component in this case is an element configured by a material that does not favor corrosion between it and aluminum or an aluminum alloy as much as a metal other than aluminum.

The side panel of the blower chamber side 23 and the side panel of the machine chamber side 24 (examples of a structural part) made of rolled steel (made of a metal other than aluminum) are the unit housing 20 made of steel laminate (a housing made of a metal other than aluminum). The support 40, 50 or 90 made of aluminum is available to be fixed by means of the resin cover 60 to the unit housing 20, and it becomes easier to make the outdoor unit 2 compact.

(3-2)

The resin cover 60 has the inner wall 62a or 63a and the outer wall 62b or 63b (an interleaved structure) of the insert part 62 or 63 to be sandwiched from both sides of the joint pieces 43 or 53 (a fixing part ) of bracket 40 or 50 made of aluminum.

Additionally, the male screw 80 (an anchor part) and the union plate 70 (an anchored structure) hold

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together the insertion parts 62 and 63 of the resin cover 60 and the joining pieces 43 or 53 of the support 40 or 50 made of aluminum. The joining pieces 43 or 53 of the support 40 or 50 are held in a state in which they are interspersed by the internal walls 62a or 63a and the external wall 62b or 63b of the resin cover 60, so that the support 40 or 50 made of aluminum can be fixed in a resistant manner by means of the resin cover 60. As a result, the fixing of the outdoor heat exchanger 13 made of aluminum can be reinforced and the effect of preventing the occurrence of problems such as loosening of the joint can be improved. of the outdoor heat exchanger 13.

The support 90 made of aluminum has two connection pieces such as the connection pieces 43 or 53 of the support 40 or 50 made of aluminum. The support 90 can be fixed to the two sites of the side panel of the machine chamber side 24 and of the division panel 28 using the two joining pieces, so that the stability of the fixing of the outdoor heat exchanger 13 and Problems such as the appearance of noise resulting from the vibration of the outdoor heat exchanger 13 can be prevented.

(3-3)

As described above, by fastening with the male screw 80 made of iron and the union plate 70 having the screw hole 72a, 73a or 73b, the placement of the union plate 70 and the resin cover 60 is easy and It becomes easier to handle them. Additionally, using the male screw 80 made of iron, an anchoring part having the necessary strength at low cost can be obtained, so that the outdoor unit 2 can be provided at low cost. In addition, the male screw 80 can be adjusted only on the joint plate 70 because the screw hole 72a, 73a or 73b is deburred, so that the number of parts and the manufacturing cost of the outdoor unit 2 can be reduced .

(4) Modifications by way of example

(4-1) Modification by way of example A

In the previous embodiment, a case was described in which the elements made of aluminum were used for the outdoor heat exchanger 13 and etc., but the elements made of aluminum can also be replaced by elements made of aluminum alloy; for example, an outdoor heat exchanger made of aluminum alloy can be used instead of the outdoor heat exchanger 13 made of aluminum and a support made of aluminum alloy can be used instead of the brackets 40, 50 or 90 made of aluminum.

(4-2) Modification by way of example B

In the previous embodiment, a case was described in which iron and steel were used as a metal other than aluminum, but another metal such as copper or copper alloy can also be used.

(4-3) Modification by way of example C

In the above embodiment, a molded resin body was used for the resin cover 60, but the molded body may also be formed of another material, such as ceramic material or prepreg composite element.

(4-4) Modification by way of example D

In the previous embodiment, a case was described in which the union plate 70 was used for the anchored structure, anchored by the male screw 80, but the anchored structure can also be a nut made of iron and capable of anchoring the male screw 80 or a female threaded part made of resin molded in the resin cover 60 and capable of anchoring the male screw 80, and an anchoring element other than a screw and an anchored structure can also be used.

(4-5) Modification by way of example E

In the above embodiment, a case was described in which the male screw 80 was attached to the joint plate 70 (an anchored structure), but, instead of the screw holes 72a, 73a or 73b in the plate union 70, the screw hole may also be formed in the side panel of the blower chamber side 23, in the side panel of the machine chamber side 24 or in the division panel 28 and the male screw 80 can be screwed into the screw hole in the side panel of the blower chamber side 23, in the side panel of the machine chamber side 24 or in the division panel 28 to fix the support 40, 50 or 90 made of aluminum and the resin cover 60 or 92. In this case, the screw hole in the side panel of the blower chamber side 23, the side panel of the machine chamber side 24 or the division panel 28 becomes an anchored structure.

List of reference symbols

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2 outdoor unit

3 Indoor unit

13 Outdoor heat exchanger

20 Unit housing

34, 35 Collector Collection Tubes

40, 50, 90 Stands

60, 92 Resin Covers

70, 93 Union plates

Reference List

<Patent bibliography>

Patent document 1: JP-A No. H7-234088

Claims (6)

10 fifteen twenty 25 2. 30 3. 35 40 Four. Four. Five 50 5. 6. 55 7. 60 An outdoor unit (2) of a refrigeration apparatus comprising a heat exchanger (13), a support (40, 50, 90) having a clamping part (42, 52) that is directly attached to the heat exchanger and a fixing part (43, 53) that has a through hole (43a, 53a) to fix the support to a structural part (23, 24, 28) made of a metal other than aluminum, an anchoring part (80) having an external shape that is smaller than the through hole in the fixing part; Y an anchored structure (70, 93) that works together with the anchoring part to retain the fixing part of the support in the structural part, characterized in that the outdoor unit (2) further comprises: a nonmetallic component (60, 92) that is interposed between the fixing part of the support and the structural part that are fixed to each other and is intended to place both in a contactless state, and in which the heat exchanger is made of aluminum or an aluminum alloy, the support is made of aluminum or an aluminum alloy and the anchoring part is made of a metal other than aluminum, and in which the nonmetallic component maintains, in a state in which the anchoring part is passing through the through hole in the fixing part, a non-contact state between the support made of aluminum or an aluminum alloy and the Anchor part made of a metal other than aluminum. The outdoor unit of the refrigeration apparatus according to claim 1, further comprising a housing (20) made of a metal other than aluminum to accommodate the heat exchanger made of aluminum or an aluminum alloy, in which the Housing made of a metal other than aluminum is the structural part made of a metal other than aluminum. The outdoor unit of the refrigeration apparatus according to claim 2, wherein the nonmetallic component has an intercalated structure (62a, 62b, 63a, 63b) that is sandwiched from both sides with the fixing part of the support and The anchoring part and the anchored structure jointly hold the interleaved structure of the non-metallic component and the fixing part of the support made of aluminum or an aluminum alloy. The outdoor unit of the refrigeration apparatus according to claim 3, wherein The anchoring part is a male screw (80) made of a metal other than aluminum and The anchored structure is a nut separated from the structural part and capable of anchoring the male screw, a union plate (70, 93) having a screw hole capable of anchoring the male screw or a female screw part in the non-component Metallic capable of anchoring the male screw. The outdoor unit of the refrigeration apparatus according to claim 4, wherein the screw hole in the joint plate is deburred. The outdoor unit of the refrigeration apparatus according to any one of claims 1 to 5, wherein the support (90) has a plurality of the fixing parts. The outdoor unit of the refrigeration apparatus according to any one of claims 1 to 6, wherein The nonmetallic component has an insertion part (62) formed from an internal wall (62a) and an external wall (62b) to receive a receiving part (43, 53) of the support (40, 50, 90) made of aluminum or of an aluminum alloy, the fixing part (43, 53) being interspersed by the inner wall (62a) and the outer wall (62b) of the nonmetallic component, and The nonmetallic component has an additional insert part (63) formed from an internal wall (63a) and an external wall (63b) to receive a fixing part (43, 53) of the support made of aluminum or an alloy of aluminum, the fixing part (43, 53) being interspersed by the inner wall (63a) and the external wall (63b) of the nonmetallic component.