JP7310170B2 - air conditioner - Google Patents

Description

The present invention relates to an air conditioner.

2. Description of the Related Art There is known a technique for melting ice generated on the upper surface of a base in an outdoor unit using heat from a heat exchanger inside the outdoor unit when the outdoor temperature is low. On the other hand, conventionally, in order to prevent electrolytic corrosion of a heat exchanger using aluminum or an aluminum alloy in an outdoor unit of an air conditioner, as shown in FIG. A technique of arranging a spacer made of relatively base metal, synthetic resin, or the like has been adopted (see, for example, Patent Document 1).

However, although the technique of Patent Document 1 can prevent electrolytic corrosion of the aluminum heat exchanger, the heat transfer from the heat exchanger to the base is lower than when the heat exchanger is placed directly on the base. Therefore, it was difficult to melt the ice generated at the base using the heat of the heat exchanger when the outside temperature was low.

On the other hand, in order to sufficiently transfer the heat of the heat exchanger to the base, a metal heat exchange member is provided between the heat exchanger and the base. A means of brazing the bottom (the end faces of the fins) is conceivable. As a result, a minute gap between the heat exchange member and the heat exchanger is filled, so heat transfer is improved. However, when the heat exchange member is brazed to the heat exchanger, if the heat exchange member is provided with a surface that contacts the bottom of the heat exchanger in order to increase the contact area with the heat exchanger, such a heat exchange member is difficult to bend. That is, when the heat exchanger is bent in an L shape in order to be placed on the base of the outdoor unit, when the cross-sectional shape of the heat exchange member to be bent at the same time is rectangular, the direction in which the bending force is applied If the length is long, the section modulus (an index indicating the difficulty of deformation) increases. Furthermore, even if the heat exchange member is bent, it is twisted, and as a result, it becomes difficult to attach the heat exchanger to the base. rice field.

JP-A-2005-114273

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-described problems, and to make it easier to bend the brazed heat exchange members of a heat exchanger in which the heat exchange members are brazed.

In order to achieve the above objects, the present invention is understood as follows.
(1) A first aspect of the present invention is an air conditioner comprising: a heat exchanger; a base on which the heat exchanger is mounted; a heat exchange member having a lower end that contacts the base, the heat exchanger having a bent portion formed by bending in an L shape, the heat exchange member having a flat plate shape, and The heat exchange member is provided at the bent portion of the heat exchanger so that the thickness direction of the heat exchange member is parallel to the bottom portion of the heat exchanger, and the upper end portion is brazed to the bottom portion of the heat exchanger. Characterized by

(2) In (1) above, the heat exchange member is provided at the bottom of the heat exchanger from one longitudinal end to the other longitudinal end.

(3) In (1) or (2) above, the heat exchange member is formed in a bellows shape.

ADVANTAGE OF THE INVENTION According to this invention, the heat exchanger by which the heat-exchange member was brazed can be easily bent.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure explaining an example of the air conditioner which concerns on embodiment of this invention, Comprising: (A) is a refrigerant circuit diagram, (B) is a block diagram of an outdoor unit control means. It is a perspective view showing an example of the internal structure of the outdoor unit concerning the embodiment of the present invention. FIG. 4 is a perspective view schematically showing L-shaped bending of the heat exchanger and the heat exchange member according to the embodiment of the present invention; FIG. 3 is a side view showing a heat exchanger and heat exchange members; 3 is a perspective view showing a heat exchanger and heat exchange members; FIG. It is a bottom view which shows a heat exchanger and a heat exchange member. 1 is a perspective view schematically showing a conventional heat exchanger, spacers and bases; FIG. It is a bottom view which shows the modification of a heat exchanger and a heat exchange member.

(embodiment)
BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail based on the accompanying drawings. The present invention is not limited to the following embodiments, and various modifications can be made without departing from the gist of the present invention.

<Configuration of refrigerant circuit>
First, a refrigerant circuit of an air conditioner 1 including an outdoor unit 2 will be described with reference to FIG. 1(A). As shown in FIG. 1(A), an air conditioner 1 according to the present embodiment includes an outdoor unit 2 installed outdoors, and an outdoor unit 2 installed indoors, which is connected to the outdoor unit 2 by a liquid pipe 4 and a gas pipe 5. It has 3 indoor units. Specifically, the liquid side shut-off valve 25 of the outdoor unit 2 and the liquid pipe connection portion 33 of the indoor unit 3 are connected by the liquid pipe 4 . Also, the gas side shutoff valve 26 of the outdoor unit 2 and the gas pipe connection portion 34 of the indoor unit 3 are connected by the gas pipe 5 . As described above, the refrigerant circuit 10 of the air conditioner 1 is formed.

<<Refrigerant circuit of outdoor unit>>
First, the outdoor unit 2 will be explained. The outdoor unit 2 includes a compressor 21, a four-way valve 22, an outdoor heat exchanger 23, an expansion valve 24, a liquid side shutoff valve 25 to which the liquid pipe 4 is connected, and a gas side to which the gas pipe 5 is connected. A closing valve 26 and an outdoor fan 27 are provided. These devices other than the outdoor fan 27 are connected to each other by refrigerant pipes, which will be described later, to form an outdoor unit refrigerant circuit 10a forming a part of the refrigerant circuit 10. FIG. An accumulator (not shown) may be provided on the refrigerant suction side of the compressor 21 .

The compressor 21 is a variable capacity compressor whose operating capacity can be changed by controlling the rotation speed by an inverter (not shown). A refrigerant discharge side of the compressor 21 is connected to the port a of the four-way valve 22 by a discharge pipe 61 . A refrigerant suction side of the compressor 21 is connected to the port c of the four-way valve 22 by a suction pipe 66 .

The four-way valve 22 is a valve for switching the direction of refrigerant flow, and has four ports a, b, c, and d. The port a is connected to the refrigerant discharge side of the compressor 21 by the discharge pipe 61 as described above. The port b is connected to one refrigerant inlet/outlet of the outdoor heat exchanger 23 by a refrigerant pipe 62 . The port c is connected to the refrigerant suction side of the compressor 21 by the suction pipe 66 as described above. The port d is connected to the gas side shutoff valve 26 and the outdoor unit gas pipe 64 . In addition, the four-way valve 22 is the channel switching means of the present invention.

The outdoor heat exchanger 23 exchanges heat between the refrigerant and outside air taken into the outdoor unit 2 by the rotation of the outdoor fan 27, which will be described later. One refrigerant inlet/outlet of the outdoor heat exchanger 23 is connected to the port b of the four-way valve 22 by the refrigerant pipe 62 as described above, and the other refrigerant inlet/outlet is connected to the liquid side closing valve 25 by the outdoor unit liquid pipe 63. there is The outdoor heat exchanger 23 functions as a condenser during cooling operation and as an evaporator during heating operation by switching the four-way valve 22, which will be described later.

The expansion valve 24 is an electronic expansion valve driven by a pulse motor (not shown). Specifically, the opening is adjusted by the number of pulses applied to the pulse motor. The opening of the expansion valve 24 is adjusted so that the discharge temperature, which is the temperature of the refrigerant discharged from the compressor 21, reaches a predetermined target temperature during the heating operation.

The outdoor fan 27 is made of a resin material and arranged near the outdoor heat exchanger 23 . The outdoor fan 27 is connected at its center to a rotation shaft of a fan motor (not shown). The rotation of the fan motor causes the outdoor fan 27 to rotate. By the rotation of the outdoor fan 27, outside air is taken into the interior of the outdoor unit 2 from the suction port (not shown) of the outdoor unit 2, and the outside air heat-exchanged with the refrigerant in the outdoor heat exchanger 23 is discharged from the outlet (not shown) of the outdoor unit 2 to the outside. Machine 2 is discharged outside.

In addition to the configuration described above, the outdoor unit 2 is provided with various sensors. As shown in FIG. 1A, the discharge pipe 61 is provided with a discharge pressure sensor 71 for detecting the pressure of the refrigerant discharged from the compressor 21 and the temperature of the refrigerant discharged from the compressor 21 (discharge temperature ) is provided. The suction pipe 66 is provided with a suction pressure sensor 72 that detects the pressure of the refrigerant sucked into the compressor 21 and a suction temperature sensor 74 that detects the temperature of the refrigerant sucked into the compressor 21 .

A heat exchanger temperature sensor 75 that detects the outdoor heat exchanger temperature, which is the temperature of the outdoor heat exchanger 23, is provided at substantially the middle portion of the refrigerant path (not shown) of the outdoor heat exchanger 23. As shown in FIG. An outside air temperature sensor 76 for detecting the temperature of the outside air flowing into the inside of the outdoor unit 2, ie, the outside air temperature, is provided near the suction port (not shown) of the outdoor unit 2 .

Further, the outdoor unit 2 is provided with an outdoor unit control means 200 . The outdoor unit control means 200 is mounted on a control board housed in an electric component box (not shown) of the outdoor unit 2 (see 200a in FIG. 2, which will be described later). As shown in FIG. 1B, the outdoor unit control means 200 includes a CPU 210, a storage unit 220, a communication unit 230, and a sensor input unit 240 (in this specification, outdoor unit control means 200 may be simply referred to as control means).

The storage unit 220 is composed of a flash memory, and stores control programs for the outdoor unit 2, detection values corresponding to detection signals from various sensors, control states of the compressor 21, the outdoor fan 27, and the like. Although not shown, the storage unit 220 stores in advance a rotational speed table that determines the rotational speed of the compressor 21 according to the requested performance received from the indoor unit 3 .

The communication unit 230 is an interface that communicates with the indoor unit 3 . The sensor input unit 240 takes in detection results from various sensors of the outdoor unit 2 and outputs them to the CPU 210 .

The CPU 210 takes in the detection results of the sensors of the outdoor unit 2 described above via the sensor input section 240 . Furthermore, the CPU 210 takes in control signals transmitted from the indoor unit 3 via the communication section 230 . The CPU 210 performs drive control of the compressor 21 and the outdoor fan 27 based on the detection result, the control signal, and the like that have been taken in. In addition, the CPU 210 performs switching control of the four-way valve 22 based on the detection result and the control signal that have been taken in. Furthermore, the CPU 210 adjusts the degree of opening of the expansion valve 24 based on the detected result and the control signal.

<<Refrigerant circuit of indoor unit>>
Next, the indoor unit 3 will be described with reference to FIG. 1(A). The indoor unit 3 includes an indoor heat exchanger 31, an indoor fan 32, a liquid pipe connection portion 33 to which the other end of the liquid pipe 4 is connected, and a gas pipe connection portion 34 to which the other end of the gas pipe 5 is connected. I have it. These devices other than the indoor fan 32 are connected to each other by refrigerant pipes, which will be described in detail below, to form an indoor unit refrigerant circuit 10b forming a part of the refrigerant circuit 10. FIG.

The indoor heat exchanger 31 exchanges heat between the refrigerant and the indoor air taken into the indoor unit 3 from a suction port (not shown) of the indoor unit 3 by rotation of an indoor fan 32 described later. One refrigerant inlet/outlet of the indoor heat exchanger 31 is connected to the liquid pipe connection portion 33 by the indoor unit liquid pipe 67 . The other refrigerant inlet/outlet of the indoor heat exchanger 31 is connected to the gas pipe connection portion 34 by the indoor unit gas pipe 68 . The indoor heat exchanger 31 functions as an evaporator when the indoor unit 3 performs cooling operation, and functions as a condenser when the indoor unit 3 performs heating operation.

The indoor fan 32 is made of a resin material and arranged near the indoor heat exchanger 31 . The indoor fan 32 is rotated by a fan motor (not shown) to take indoor air into the interior of the indoor unit 3 from a suction port (not shown) of the indoor unit 3, and heat-exchange the indoor air with the refrigerant in the indoor heat exchanger 31. It blows into the room from the air outlet (not shown) of the machine 3 .

In addition to the configuration described above, the indoor unit 3 is provided with various sensors. The indoor unit liquid pipe 67 is provided with a liquid side temperature sensor 77 that detects the temperature of the refrigerant flowing into or out of the indoor heat exchanger 31 . The indoor unit gas pipe 68 is provided with a gas-side temperature sensor 78 that detects the temperature of the refrigerant flowing out of or flowing into the indoor heat exchanger 31 . A room temperature sensor 79 for detecting the temperature of the indoor air flowing into the interior of the indoor unit 3, that is, the room temperature, is provided near the suction port (not shown) of the indoor unit 3 .

<Operation of refrigerant circuit>
Next, the flow of the refrigerant in the refrigerant circuit 10 and the operation of each part during the air conditioning operation of the air conditioner 1 according to the present embodiment will be described with reference to FIG. 1(A). Below, the case where the indoor unit 3 performs the heating operation based on the refrigerant flow indicated by the solid line in the drawing will be described. It should be noted that the flow of the refrigerant indicated by broken lines indicates the cooling operation.

When the indoor unit 3 performs the heating operation, the CPU 210 sets the four-way valve 22 to a state indicated by a solid line as shown in FIG. Switch so that b communicates with port c. As a result, the refrigerant circulates in the direction indicated by the solid arrow in the refrigerant circuit 10, and a heating cycle is established in which the outdoor heat exchanger 23 functions as an evaporator and the indoor heat exchanger 31 functions as a condenser.

High-pressure refrigerant discharged from the compressor 21 flows through the discharge pipe 61 and flows into the four-way valve 22 . The refrigerant that has flowed into the port a of the four-way valve 22 flows from the port d of the four-way valve 22 through the outdoor unit gas pipe 64 and flows into the gas pipe 5 via the gas side closing valve 26 . The refrigerant flowing through the gas pipe 5 flows into the indoor unit 3 via the gas pipe connection portion 34 .

The refrigerant that has flowed into the indoor unit 3 flows through the indoor unit gas pipe 68 and into the indoor heat exchanger 31, exchanges heat with the indoor air taken into the indoor unit 3 by the rotation of the indoor fan 32, and condenses. do. In this way, the indoor heat exchanger 31 functions as a condenser, and the indoor air that has undergone heat exchange with the refrigerant in the indoor heat exchanger 31 is blown out into the room from an air outlet (not shown), whereby the indoor unit 3 is installed. The room is heated.

The refrigerant that has flowed out of the indoor heat exchanger 31 flows through the indoor unit liquid pipe 67 and flows into the liquid pipe 4 via the liquid pipe connection portion 33 . The refrigerant that has flowed through the liquid pipe 4 and flowed into the outdoor unit 2 via the liquid-side shutoff valve 25 is decompressed when flowing through the outdoor unit liquid pipe 63 and passing through the expansion valve 24 . As described above, the degree of opening of the expansion valve 24 during heating operation is adjusted so that the discharge temperature of the compressor 21 reaches a predetermined target temperature.

The refrigerant that has flowed into the outdoor heat exchanger 23 through the expansion valve 24 exchanges heat with the outside air taken into the outdoor unit 2 by the rotation of the outdoor fan 27 and evaporates. The refrigerant flowing out from the outdoor heat exchanger 23 to the refrigerant pipe 62 flows through the ports b and c of the four-way valve 22 and the suction pipe 66, is sucked into the compressor 21, and is compressed again.

<Configuration of outdoor unit>
Next, the configuration of the outdoor unit 2 will be described. FIG. 2 is a perspective view exemplifying the internal structure of the outdoor unit 2 of the air conditioner 1 according to this embodiment (FIG. The outdoor unit 2 is viewed from the front). As shown in FIG. 2, the outdoor unit 2 includes a compressor 21, an outdoor heat exchanger 23, an outdoor fan 27, and a compressor 21 mounted on a base 300 that is the bottom of the housing of the outdoor unit 2. and an outdoor unit control means 200 that drives and controls the outdoor fan 27 . The outdoor unit 2 is connected to the indoor unit 3 by piping and cables (not shown).

The outdoor heat exchanger 23 is formed by bending into an L shape, and a heat transfer tube 500 (hairpin) is provided while being folded back in the horizontal direction. The outdoor unit control means 200 of the outdoor unit 2 controls the compressor 21, the control valve, etc. according to the instruction from the indoor unit 3, and circulates the refrigerant discharged from the compressor 21 to the refrigerant circuit 10 described later. The fan 27 circulates outside air to the outdoor heat exchanger 23 to perform cooling operation or heating operation.

The outdoor fan 27 rotates clockwise when viewed from the direction of FIG. 1, draws in outside air from the outdoor heat exchanger 23 side, and blows it out to the opposite side (the front side of the outdoor unit 2). A partition plate 401 is installed between the outdoor fan 27 and the compressor 21 , and the partition plate 401 partitions the inside of the housing 400 into a fan room 402 and a machine room 403 . In the machine room 403, the compressor 21, an accumulator (not shown), various refrigerant pipes, etc. are installed and accommodated.

<Heat exchanger and heat exchange member>
The outdoor heat exchanger 23 (hereinafter referred to as the heat exchanger 23) according to this embodiment has a heat exchange member 40 in contact with the base 300 at its bottom. That is, the L-shaped heat exchanger 23, the base 300 on which the heat exchanger 23 is mounted, the upper end portion 41 that contacts the bottom portion 231 of the heat exchanger 23, and the lower end portion 42 that contacts the base 300. The heat exchange member 40 has a flat plate shape and is brazed with the upper end portion 41 in contact with the bottom portion of the heat exchanger 23 . The heat exchanger 23 and the heat exchange member 40 will be described below with reference to FIGS. 3 to 7. FIG.

First, the case where the conventional heat exchanger 23 is bent into an L shape will be described with reference to FIG. Conventionally, only the heat exchanger 23 is bent. It is placed on the base 300 . This prevents electrolytic corrosion of the heat exchanger 23 caused by accumulation of condensed water in the base 300 . For example, if the spacer 60 is made of a metal that is electrically less noble than the heat exchanger 23 made of aluminum, the spacer 60 sacrifices the heat exchanger 23 and is subject to electrolytic corrosion. Problems such as refrigerant leakage caused by corrosion of the heat transfer tubes 500 of the vessel 23 can be prevented. However, on the other hand, compared with the case where the heat exchanger 23 is mounted directly on the base 300, the heat transfer to the base 300 is lowered.

On the other hand, in the heat exchanger 23 according to the present embodiment, since the ice generated on the base 300 is melted using the heat of the heat exchanger 23, as shown on the left side of FIG. A metal heat exchange member 40 is fixed by brazing over the entire bottom portion of the housing. As shown in FIG. 4, the heat exchange member 40 has a flat plate shape, and is brazed with its upper end surface 41 in contact with the bottom portion 231 of the heat exchanger 23 . The end surface 42 abuts the base 300 . The metal used for the heat exchange member 40 is preferably aluminum, which is the same material as the fins (not shown) of the heat exchanger 23 that are in contact with the heat exchange member 40, or a metal that is electrically less noble than aluminum. Thereby, it is possible to prevent electrolytic corrosion from occurring in the portion of the heat exchanger 23 that is in contact with the heat exchange member 40 . It should be noted that the locations where electrolytic corrosion occurs are locations where metals having a potential difference come into contact with each other, and even if the metals are connected via water, corrosion does not occur in relatively distant locations. When the heat exchange member 40 is brazed and fixed to the heat exchanger 23 and bent into an L shape so that the heat exchanger 23 can be placed on the base 300, the heat exchange member 40 becomes thicker than the heat exchanger. In the case where the base 300 has a surface that abuts all over the direction (the front-rear direction in FIG. 5), it is difficult to bend the base 300 into an L-shape corresponding to the corners. That is, when the heat exchanger 23 is bent into an L shape in order to mount the heat exchanger 23 on the base 300 of the outdoor unit 2, if the cross-sectional shape of the heat exchange member 40 to be bent at the same time is rectangular, the heat exchanger 23 is bent. If the length in the direction in which the force is applied is long, the section modulus (an index indicating the difficulty of deformation) increases. Furthermore, even if the heat exchange member 40 is bent, it is twisted, and as a result, it becomes difficult to attach the heat exchanger 23 to the base 300 . It is conceivable to bend the heat exchanger 23 and the heat exchange member 40 separately, but this is not preferable because the number of bending steps increases. Furthermore, the brazing process of the heat exchanger 23 is two steps (welding of the heat transfer tubes and the fins, etc., and welding of the heat exchanger 23 and the heat exchange member 40). A heat exchanger using flat tubes, such as the heat exchanger 23 according to this embodiment, is formed by furnace brazing. In furnace brazing, a phenomenon called erosion occurs unless the temperature and heating time are controlled within appropriate ranges. Erosion is a phenomenon in which Si (silicon) contained in the brazing filler metal diffuses into the base material, thereby reducing strength and corrosion resistance. If the brazing process is performed in two steps, the heating time becomes long and erosion is likely to occur, which is not preferable.

Therefore, in the present embodiment, as described above, the heat exchange member 40 is shaped like a flat plate, and the end surface thereof is brazed while being in contact with the bottom of the heat exchanger 23 . In this way, since the length of the heat exchange member 40 in the direction in which the bending force is applied is short (the thickness dimension of the flat plate-shaped heat exchange member 40), the heat exchange member 40 can be bent into an L shape. becomes easier. As a result, the heat of the heat exchanger 23 is easily transmitted to the base 300 through the heat exchange member 40, and the ice generated on the base 300 is easily melted using the heat of the heat exchanger.

4 shows a side view, FIG. 5 shows a perspective view from the front, and FIG. 6 shows a bottom view (these figures are L-shaped for convenience). front straight heat exchanger 23). The heat exchange member 40 is provided at the bottom of the heat exchanger 23 so as to be in contact with the base 300, as shown in FIG. Condensed water that has not been frozen or has been deiced due to the effect of the heat exchange member 40 is drained to the outside of the base 300 through a drain hole (not shown).

The heat exchange member 40 is formed of a plurality of flat plates, as shown in FIG. The heat exchange member 40 is provided over the entire bottom portion of the heat exchanger 23 , that is, along the heat transfer tube 500 of the heat exchanger 23 from one longitudinal end to the other end. 5 shows the linear heat exchanger 23 instead of the L-shape, as described above, but the heat exchanger 23 provided from one end to the other in the longitudinal direction along the heat transfer tube 500 is the L-shape. The same is true even after being bent into. As described above, the heat exchange member 40 is provided along the heat transfer tube 500 from one end to the other end in the longitudinal direction. Therefore, the contact area between the heat exchanger 23 and the heat exchange member 40 can be increased. As a result, the heat of the heat exchanger 23 is easily transferred to the base 300 via the heat exchange member 40 .

As in the embodiment described above, the heat exchange member 40 can be formed by brazing individual flat plates to the bottom of the heat exchanger 23. A long flat plate may be bent to form one heat exchange member 40 having a bellows shape when viewed from the bottom (similarly when viewed from above) as shown in FIG. By forming the heat exchange member 40 into a single bellows shape in this way, the contact area between the heat exchanger 23 and the heat exchange member 40 is increased, while suppressing an increase in the number of parts and facilitating the assembly process. can also Also, a plurality of long flat plate-like heat exchange members 40 may be provided along the heat transfer tube 500 from one longitudinal end to the other longitudinal end. In FIG. 8, a first heat exchange portion 43 and a second heat exchange portion 44 are provided as the heat exchange member 40 in parallel along the heat transfer tube 500 from one end to the other end in the longitudinal direction. By doing so, the contact area between the heat exchanger 23 and the heat exchange member 40 can be increased.

Note that FIG. 6 shows a schematic configuration, and the heat exchange member 40 is not limited to the illustrated form. For example, the pitch between adjacent vertices of the bellows of the heat exchange member 40 and the number of folds of the bellows can be appropriately adjusted according to the actual heat exchanger 23 and the base 300 .

FIG. 6 also shows the fins 50 of the heat exchanger 23 . When the heat exchanger 23 is bent into an L-shape, the fins 50 adjacent to each other spread out in a fan-like shape at the bent portions, but the dimension of the heat exchange member 40 is short in the direction in which the bending force is applied. 3, the heat exchanger 23 and the heat exchange member 40 are integrally bent into an L shape as shown in FIG. becomes easier.

1 air conditioner 2 outdoor unit 3 indoor unit 4 liquid pipe 5 gas pipe 10 refrigerant circuit 10a outdoor unit refrigerant circuit 10b indoor unit refrigerant circuit 21 compressor 22 four-way valve 23 outdoor heat exchanger (heat exchanger)
24 expansion valve 25 liquid-side shut-off valve 26 gas-side shut-off valve 27 outdoor fan 31 indoor heat exchanger 32 indoor fan 33 liquid pipe joint 34 gas pipe joint 40 heat exchange member 50 fin 60 spacer 61 discharge pipe 62 refrigerant pipe 63 outdoor Machine liquid pipe 64 Outdoor unit gas pipe 66 Intake pipe 67 Indoor unit liquid pipe 68 Indoor unit gas pipe 71 Discharge pressure sensor 72 Intake pressure sensor 73 Discharge temperature sensor 74 Intake temperature sensor 75 Heat exchange temperature sensor 76 Outside air temperature sensor 77 Liquid side temperature Sensor 78 Gas side temperature sensor 79 Room temperature sensor 200 Outdoor unit control means 210 CPU
220 storage unit 230 communication unit 240 sensor input unit 300 base 400 housing 401 partition plate 402 blower room 403 machine room 500 heat transfer tube (hairpin tube)

Claims (3)

a heat exchanger;
a base on which the heat exchanger is mounted;
a heat exchange member having an upper end that contacts the bottom of the heat exchanger and a lower end that contacts the base;
The heat exchanger has a bent portion formed by bending in an L shape,
The heat exchange member has a flat plate shape and is provided at the bent portion of the heat exchanger so that the thickness direction of the heat exchange member is parallel to the bottom portion of the heat exchanger , and the upper end portion is the An air conditioner characterized by being brazed to the bottom of a heat exchanger. 2. The air conditioner according to claim 1, wherein the heat exchange member is provided at the bottom of the heat exchanger from one longitudinal end to the other longitudinal end of the heat transfer tube. 3. The air conditioner according to claim 1, wherein the heat exchange member has a bellows shape in plan view.

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