JP2016014505A - Air conditioner outdoor unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air conditioner outdoor unit capable of preventing damage to flat tubes even if a corrugated-fin heat exchanger is mounted in the outdoor unit and a shock is applied to the outdoor unit at a time of transport or falling.SOLUTION: An air conditioner outdoor unit comprises: a corrugated-fin heat exchanger 9 that includes a plurality of flat tubes 9b disposed between two header pipes 9a and communicated with the two header pipes 9a; header-disposed-portion insulating members 15 provided in lower end portions of the header pipes 9a, holding the header pipes 9a, and preventing electrical erosion; flat-tube-disposed-portion insulating members 16 provided in lower end portions of the flat tubes 9b, holding the flat tubes 9b, and preventing electrical erosion, the flat-tube-disposed-portion insulating members 16 each including heat-exchanger holding members holding a side of each flat tube 9b therebetween, and the heat-exchanger holding members 16f holding each flat tube 9b only by holding the sides of the flat tube 9b therebetween without contact with a lower end of the flat tube 9b.

Description

  The present invention relates to an outdoor unit of an air conditioner equipped with a corrugated fin heat exchanger.

In an outdoor unit of an air conditioner equipped with a conventional corrugated fin type heat exchanger, a plurality of two vertical header pipes arranged in parallel at intervals and two header pipes are arranged inside. There is a type equipped with a side flow type parallel flow heat exchanger equipped with a horizontal flat tube in which the refrigerant passage provided in the pipe is communicated with the inside of the header pipe.
Then, a positioning part for seating the lower end of the header pipe of the heat exchanger is formed on the base pan that forms the bottom of the casing of the outdoor unit of the air conditioner. Electricity between different metals is formed between the lower end of the header pipe and the positioning part. As an anti-corrosion measure, an outdoor unit that fixes a heat exchanger by interposing a cap-shaped insulating member and inserting a header pipe into a positioning portion is disclosed (for example, see Patent Document 1).

JP 2011-145029 A (page 3)

Here, when mounting a large corrugated fin type heat exchanger on an outdoor unit, the heat exchanger is fixed to the outdoor unit by inserting the header pipe into the positioning unit, but in some cases, an insulating member is used. The heat exchanger may be held in a form that supports the lower end portion where the flat tube of the heat exchanger is disposed.
At this time, since the flat tube of the corrugated fin heat exchanger is weaker than the header pipe, the weight of the corrugated fin heat exchanger is increased and the flat tube supported by the cap-shaped insulating member is increased. When a load is applied, the flat tube may be deformed. Due to the deformation of the flat tube, there has been a problem that the performance of the heat exchanger is lowered due to the decrease in the fluidity of the refrigerant, or the flat tube itself is ruptured in some cases.

  The present invention has been made to solve the above-described problems. A large corrugated fin-type heat exchanger is mounted on an outdoor unit, and a flat tube is damaged even when an impact is applied during transportation fall. It aims at obtaining the outdoor unit of the air conditioner which never happens.

  An outdoor unit of an air conditioner according to the present invention includes two header pipes arranged in parallel and vertically, and a plurality of flat tubes arranged between the two header pipes and communicated with the two header pipes A heat exchanger provided with a first insulating member that is provided at the lower end of the header pipe and holds the header pipe and prevents electric erosion, and is provided at the lower end of the flat tube and holds the flat tube A second insulating member for preventing electric erosion, and a bottom plate provided with the first insulating member and the second insulating member, and the second insulating member includes a holding portion for holding the side portion of the flat tube. The provided and sandwiching portion sandwiches and holds only the side portion of the flat tube without contacting the lower end of the flat tube.

  According to the present invention, the lower end of the heat exchanger is not in contact with the insulating member by sandwiching the flat tube of the heat exchanger having the above configuration with the heat exchanger sandwiching member. That is, by restraining in the front-rear direction of the flat tube, it is not brought into contact with the insulating member in its own weight direction. Thereby, even when an impact is applied during transportation, damage to the flat tube of the heat exchanger can be prevented.

It is the perspective view which looked at the outdoor unit of the air conditioner of this invention from the front. It is a perspective view which shows the inside of the outdoor unit of the air conditioner of FIG. It is a general view of a corrugated fin type heat exchanger. It is an enlarged view of a corrugated fin type heat exchanger. It is an assembly drawing of the holding | maintenance and clamping component group of a corrugated fin type heat exchanger. FIG. 5 is an exploded view of a holding and clamping component group of the corrugated fin heat exchanger of FIG. It is a general view of a corrugated fin type heat exchanger and an insulating member. It is XX sectional drawing of the corrugated fin type heat exchanger and insulating member of Fig.5 (a). FIG. 6 is a YY sectional view of the corrugated fin heat exchanger and the insulating member of FIG. FIG. 6 is a ZZ cross-sectional view of the corrugated fin heat exchanger and the insulating member of FIG. It is a general view which shows the attachment state of the insulating member of the flat pipe | tube arrangement | positioning part of a corrugated fin type heat exchanger. It is A direction figure which shows the insulating member of the flat pipe | tube arrangement | positioning part of Fig.6 (a). It is a B direction figure which shows the insulating member of the flat tube arrangement | positioning part of Fig.6 (a). It is the perspective view which looked at the outdoor unit of the air conditioner of this invention from the back. It is a general view which shows the rectangular hole for drainage of the insulating member of the flat pipe | tube arrangement | positioning part of a corrugated fin type heat exchanger. It is A direction figure which shows the rectangular hole for drainage of Fig.8 (a). It is a B direction figure which shows the rectangular hole for drainage of Fig.8 (a).

FIG. 1 is a perspective view of an outdoor unit of an air conditioner according to the present invention as viewed from the front.
As shown in FIG. 1, the housing of the outdoor unit 100 of the air conditioner of the present invention has a top panel 1 on the top, a bottom plate 7 on the bottom, a front panel 2 on the front side, and a right side as viewed from the front. The right panel 3, the service cover 4 and the valve cover 5.

FIG. 2 is a perspective view showing the inside of the outdoor unit 100 of the air conditioner of FIG.
As shown in FIG. 2, the interior of the outdoor unit 100 of the air conditioner of the present invention has a blower chamber 20a on the left side and a machine chamber 20b on the right side as viewed from the front, and the blower chamber 20a and the machine The chamber 20b is divided by the separator 6. Moreover, each component inside the outdoor unit 100 is installed on the bottom plate 7 on the bottom surface having legs.

  The machine room 20b is provided with a compressor 8, a refrigerant pipe, and electrical equipment. The refrigerant sent from the indoor unit (not shown) is compressed in the compressor 8, passes through the refrigerant pipe, and is sent to the corrugated fin heat exchanger 9 installed in the blower chamber 20a. In addition, the electrical product supplies power to each component.

  An L-shaped corrugated fin heat exchanger 9, a propeller fan 10, a fan motor 11, a fan motor fixing member 12, and the like are installed in the blower chamber 20a. An L-shaped corrugated fin heat exchanger 9 is erected on the back side of the blower chamber 20a. The L-shaped corrugated fin-type heat exchanger 9 has a short side surface of the corrugated fin-type heat exchanger 9 on the left side of the outdoor unit 100 and a longitudinal surface of the corrugated fin-type heat exchanger 9. Are provided so as to face the back side of the outdoor unit 100.

  Further, in order to force heat exchange between the corrugated fin heat exchanger 9 and the outside, the propeller fan 10 and the propeller fan 10 are driven between the corrugated fin heat exchanger 9 and the front panel 2. A fan motor 11 and a fan motor fixing member 12 for holding them are installed.

  When the fan motor 11 is driven and the propeller fan 10 is rotated, air flows into the outdoor unit 100 from the back side of the corrugated fin heat exchanger 9. Then, the air passes through the corrugated fin heat exchanger 9 and the propeller fan 10 and flows out in the front direction of the outdoor unit. Thus, during the cooling operation, the refrigerant in the corrugated fin heat exchanger 9 is forcibly cooled by air, and the air that has passed through the corrugated fin heat exchanger 9 is heated by exchanging heat with the refrigerant. .

FIG. 3A is an overall view of the corrugated fin heat exchanger 9.
As shown in FIG. 3A, the corrugated fin heat exchanger 9 includes a header pipe 9a, a flat tube 9b that is a heat exchange tube, and a corrugated fin 9c. The corrugated fin heat exchanger 9 has header pipes 9a at both left and right ends. The plurality of flat tubes 9b are disposed between the header pipes 9a at the left and right ends. Further, the respective flat tubes 9b are arranged at intervals in parallel to the vertical direction.

FIG. 3B is an enlarged view of the corrugated fin heat exchanger 9. As shown in FIG. 3 (b), the corrugated fins 9c are alternately arranged in a wave shape between the flat tubes 9b arranged in parallel to the vertical direction at a predetermined interval.
The header pipe 9a, the flat tube 9b, and the corrugated fin 9c are made of a metal having a high thermal conductivity such as aluminum. The flat tube 9b and the corrugated fin 9c are fixed by brazing or welding.

FIG. 4A is an assembly view of the holding and clamping component group of the corrugated fin heat exchanger 9.
As shown in FIG. 4A, the holding and clamping component group of the corrugated fin-type heat exchanger 9 is a header plate 9a, a separator plate 13 that is a fixed plate with the separator 6, and a fixed plate with the bottom plate 7. The heat exchange plate 14, the insulating member 15 of the header arrangement part, and the insulating member 16 of the flat tube arrangement part are configured.

FIG. 4B is an exploded view of the holding and clamping component group of the corrugated fin heat exchanger 9 of FIG.
As shown in FIG. 4 (b), in order to prevent the electric corrosion of the header pipe 9a and the flat tube 9b, an insulating member is provided in the gap between each sheet metal part constituting the outdoor unit 100 and the corrugated fin heat exchanger 9. insert.
The header pipe 9a in the short direction of the L-shaped corrugated fin-type heat exchanger 9 has a header arrangement portion at the upper and lower ends of the header pipe 9a in order to prevent electric corrosion with the top panel 1 and the bottom plate 7. Insulating members 15 are respectively inserted.
On the other hand, the header pipe 9a in the longitudinal direction of the L-shaped corrugated fin heat exchanger 9 is provided with a corrugated fin in order to prevent electric corrosion with the separator plate 13, the heat exchanger plate 14, the top panel 1 and the bottom plate 7. An insulating member 15 of the header arrangement portion is inserted into the gap with the mold heat exchanger 9.
Further, in the gap between the flat tube placement portion of the corrugated fin heat exchanger 9 and the bottom plate 7, the insulating member 16 of the flat tube placement portion is inserted.

FIG. 5A is an overall view of the corrugated fin heat exchanger 9 and the insulating member. 5B is a sectional view taken along line XX in FIG. 5A, FIG. 5C is a sectional view taken along line YY in FIG. 5A, and FIG. FIG. 5 is a ZZ cross-sectional view of FIG.
As shown in FIGS. 5B and 5C, the corrugated fin heat exchanger 9 is erected by the insulating member 15 of the header arrangement portion holding the header pipe 9a in the vertical direction. Yes.
On the other hand, as shown in FIG. 5 (d), the insulating member 16 in the flat tube disposition portion includes an insertion portion 16 g having a U-shaped cross section for inserting the corrugated fin heat exchanger 9 and the corrugated fin heat exchanger 9. The heat exchanger holding member 16f is provided. The heat exchanger clamping member 16f is made of an insulating member.
The corrugated fin type heat exchanger 9 is inserted into the insertion portion 16g, and the heat exchanger holding member 16f holds the corrugated fin type heat exchanger 9 from the front side and the back side of the outdoor unit 100. At this time, the heat exchanger holding member 16f is held in a state where a gap is formed between the lower end of the flat tube 9b of the corrugated fin heat exchanger 9 and the bottom of the insertion portion 16g having a U-shaped cross section. Thereby, the insulating member 16 of the flat tube arrangement portion acts as a restraining tool for preventing displacement in the A direction (the front-rear direction of the outdoor unit 100) in FIG.

  As described above, the lower end of the flat tube 9b of the corrugated fin heat exchanger 9 is sandwiched and fixed by the heat exchanger sandwiching member 16f made of an insulating member, so that the insertion portion 16g having a U-shaped cross section can be formed. An outdoor unit 100 of an air conditioner that can prevent damage to the flat tube 9b due to an impact at the time of transportation drop can be obtained while maintaining the original function of preventing electric corrosion without contacting the bottom.

FIG. 6A is an overall view showing an attached state of the insulating member 16 in the flat tube arrangement portion of the corrugated fin heat exchanger 9.
As shown in FIG. 6 (a), the insulating member 16 of the flat tube disposition portion is temporarily fixed by hooking hooks 16a disposed at both ends to a flange 7a raised vertically from the back surface of the bottom plate 7. It attaches by fixing the baseplate 7 and the insulating member 16 of a flat tube arrangement | positioning part with the screw 17. FIG.

FIG. 6B is an A direction view showing the insulating member 16 of the flat tube arrangement portion of FIG.
Since the insulating member 16 of the flat tube arrangement portion has a rib 16c matched to the shape of the flange 7a, it can be attached at any position in the C direction (longitudinal direction of the outdoor unit 100) in FIG. It is.

FIG.6 (c) is a B direction figure which shows the insulating member 16 of the flat tube arrangement | positioning part of Fig.6 (a).
After the insulating member 16 of the flat tube arrangement portion is hooked on the flange 7a, if there is a gap between the hook 16a and the flange 7a, the insulating member 16 of the flat tube arrangement portion is not stable. Therefore, in order to provide stability, the insertion stabilizing rib 16b is erected on the hook 16a. When the insertion stabilizing rib 16b is hooked on the flange 7a, the insulating member 16 of the flat tube arrangement portion is stabilized.

FIG. 7 is a perspective view of the outdoor unit 100 of the air conditioner of the present invention as viewed from the back.
As described above, the corrugated fin heat exchanger 9 is held by the heat exchanger holding member 16f so that the lower end of the flat tube arrangement portion of the corrugated fin heat exchanger 9 does not contact the bottom plate 7. Accordingly, a gap is generated between the lower end of the corrugated fin heat exchanger 9 and the bottom plate 7.
Therefore, the insulating member 16 in the flat tube arrangement portion is provided with a substantially rectangular parallelepiped shape (hereinafter referred to as a shape 16d filling the gap) that fills the gap between the lower end of the corrugated fin-type heat exchanger 9 and the bottom plate 7. As a result, foreign matter or the like does not enter from the gap, and the drain port arranged in the bottom plate 7 is not blocked.

FIG. 8A is an overall view showing a drainage rectangular hole in the insulating member 16 of the flat tube disposition portion of the corrugated fin heat exchanger 9. FIG. 8B is a direction A showing the drainage rectangular hole in FIG. 8A, and FIG. 8C is a direction B showing the drainage rectangular hole in FIG.
As shown in FIGS. 8B and 8C, drainage rectangular holes 16 e are arranged on the lower surface and side surface of the insertion portion 16 g of the corrugated fin heat exchanger 9. The insertion part 16g is a place where the corrugated fin heat exchanger 9 is inserted, and drain water or the like generated by condensation of moisture in the air in the corrugated fin type heat exchanger 9 or the like drops and stays in the insertion part 16g. There are things to do. Then, due to the drain water or the like, the aluminum constituting the corrugated fin heat exchanger 9 is corroded or, in a cold region, flattened by the growth of ice attached to the corrugated fin heat exchanger 9 or the like. The tube 9b and the like may be damaged. Therefore, it is possible to prevent the above-described phenomenon by providing a drainage rectangular hole 16e in the insertion portion 16g and draining drain water or the like dripped into the insertion portion 16g.

In addition, in this Embodiment, although the case where the one insertion part 16g was provided in the insulating member 16 of the flat tube arrangement | positioning part is demonstrated, this invention is not limited to this, Two or more insertion parts 16g are provided. It may be provided. When two or more insertion portions 16g are provided, the number of places where the corrugated fin heat exchanger 9 is sandwiched increases, so that the corrugated fin heat exchanger 9 can be held more stably.
Moreover, in this Embodiment, although the case where the insulating member 16 of a flat tube arrangement | positioning part was provided in the longitudinal direction of the corrugated fin type heat exchanger 9 is demonstrated, this invention is not limited to this, A corrugated fin type You may provide in the transversal direction of the heat exchanger 9. FIG. When the insulating member 16 of the flat tube arrangement portion is provided in the short direction of the corrugated fin heat exchanger 9, it can act as a restraining tool in the C direction (left and right direction of the outdoor unit 100) in FIG. it can.
Moreover, in this Embodiment, although the case where the two hooks 16a were provided in the insulating member 16 of a flat tube arrangement | positioning part was demonstrated, this invention is not limited to this, Three or more hooks 16a are provided. Also good.
Moreover, in this Embodiment, although the rectangular hole 16e for drainage is made into the rectangular hole, this invention is not limited to this, You may make it other shapes, such as a round shape and a triangular shape.

  The corrugated fin heat exchanger 9 corresponds to a “heat exchanger” in the present invention. The insulating member in the header arrangement portion corresponds to the “first insulating member” in the present invention, and the insulating member 16 in the flat tube arrangement portion corresponds to the “second insulating member” in the present invention. The heat exchanger clamping member 16f corresponds to a “clamping portion” in the present invention. Further, the drainage rectangular hole 16e corresponds to the “drainage hole” in the present invention.

  1 top panel, 2 front panel, 3 right panel, 4 service cover, 5 valve cover, 6 separator, 7 bottom plate, 7a flange, 8 compressor, 9 corrugated fin heat exchanger, 9a header pipe, 9b flat tube 9c Corrugated fin, 10 propeller fan, 11 fan motor, 12 fan motor fixing member, 13 separator plate, 14 heat exchange plate, 15 insulating member for header arrangement part, 16 insulating member for flat tube arrangement part, 16a hook, 16b insertion Stabilizing rib, 16c positioning rib, 16d shape filling gap, 16e drainage rectangular hole, 16f heat exchanger clamping member, 16g insertion part, 17 screw, 20a blower room, 20b machine room, 100 outdoor unit.

Claims (6)

A heat exchanger comprising two header pipes arranged in parallel and vertically, and a plurality of flat tubes arranged between the two header pipes and communicated with the two header pipes;
A first insulating member provided at a lower end portion of the header pipe and holding the header pipe and preventing electric erosion;
A second insulating member provided at a lower end portion of the flat tube and holding the flat tube and preventing electric erosion;
A bottom plate provided with the first insulating member and the second insulating member;
With
The second insulating member includes a sandwiching portion that sandwiches a side portion of the flat tube,
The outdoor unit of an air conditioner, wherein the clamping unit holds and holds only the side part of the flat tube without contacting the lower end of the flat tube. The sandwiching portion has a U-shaped section, and the flat tube is inserted into the U-shaped section, and a lower end of the flat tube and a bottom of the U-shaped section The outdoor unit for an air conditioner according to claim 1, wherein only the side portion of the flat tube is sandwiched and held in a state where a gap is formed therebetween. The second insulating member is
Inserted in the gap between the back surface of the heat exchanger and the bottom plate, and fills the gap between the heat exchanger and the bottom plate,
The outdoor unit for an air conditioner according to claim 1 or 2, wherein the outdoor unit is an air conditioner. The heat exchanger comprises a bottom plate erected via the first insulating member and the second insulating member;
The bottom plate is
A flange that is raised vertically from the bottom plate and to which the second insulating member is attached;
The second insulating member is
A plurality of hooks engaged with the flange, the second insulating member is attached to the flange by engaging the flange and the second insulating member via the hook;
The outdoor unit of the air conditioner as described in any one of Claims 1-3 characterized by the above-mentioned. The second insulating member is
A positioning rib for determining the position of the second insulating member on the flange is provided, and the positioning rib is engaged with the flange. An insulating member is positioned on the flange;
The outdoor unit for an air conditioner according to claim 4. The second insulating member is
With at least one drainage hole,
The outdoor unit for an air conditioner according to any one of claims 1 to 5, wherein the outdoor unit is an air conditioner.

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