JP2013200106A - Mounting structure of heat insulating material in air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mounting structure of a heat insulating material, in which the heat insulating material can be easily mounted on a body case of an air conditioner, a structure of the heat insulating material can be simplified, and degradation in heat insulating property can be suppressed.SOLUTION: A heat insulating material 54 is mounted on an inner face of a wall part 35 of a body case 31 that accommodates a heat exchanger 13, by interposing the heat insulating material 54 between the wall part 35 and a mounting member 66 for an actuator 62 to be fixed to the inner face of the wall part 35. It is allowed that protrusions 72 are formed on the inner face of the wall part 35, recesses 75 to be fitted to the protrusions 72 are formed in the heat insulating material 54 and the mounting member 66 is fixed to top ends of the protrusions 72.

Description

  The present invention relates to a heat insulating material mounting structure in an air conditioner.

  Patent Document 1 below discloses an air conditioner including a ceiling-embedded indoor unit housed in a ceiling. This indoor unit includes a decorative panel on the lower surface of a box-shaped main body case, and the decorative panel is provided with an air inlet and an outlet. The inside of the main body case is partitioned into a machine room (blower room) and a heat exchange chamber by a partition plate, a fan unit is arranged in the machine room, and a heat exchanger, a drain pan, a drain pump, etc. are arranged in the heat exchange room Has been. And the air inhaled from the inlet by the blower unit is blown out from the outlet after heat exchange with the heat exchanger, and adjusts the temperature and humidity in the room.

JP 2006-97995 A

Generally, components such as a drain pump disposed in a heat exchange chamber in the main body case are attached to the inner surface of the main body case via a bracket or the like. On the other hand, a heat insulating material is provided on the inner surface of the main body case in the heat exchange chamber so that heat does not escape to the outside. The opening part matched with shapes, such as, was formed in the heat insulating material. Therefore, the structure of the heat insulating material becomes complicated, and a part of the inner surface of the main body case is not covered with the heat insulating material due to the opening, and the heat insulating property is reduced accordingly.
Conventionally, when the heat insulating material is attached to the inner surface of the main body case, the heat insulating material is positioned by using a double-sided tape or the like, so that the attaching operation is very troublesome.

  The present invention has been made in view of the above circumstances, and can easily attach a heat insulating material to a main body case, and further simplifies the structure of the heat insulating material and reduces the heat insulating property. It aims at providing the attachment structure of the heat insulating material which can be suppressed.

  The heat insulating material mounting structure according to the present invention includes a heat insulating material sandwiched between the wall portion of the main body case that houses the heat exchanger and the mounting member for the actuator that is fixed to the inner surface of the wall portion. The said heat insulating material is attached to the inner surface of the said wall part, It is characterized by the above-mentioned.

According to this structure, a heat insulating material can be easily attached with respect to the inner surface of the wall part of a main body case by utilizing the attachment member for actuators. Moreover, since it becomes unnecessary to form the opening part etc. for avoiding an attachment member in a heat insulating material, while being able to simplify the structure of a heat insulating material, a heat insulation fall can be suppressed.
The actuator may be provided with a motor or a solenoid that is operated by electric power, or may be provided with a cylinder that is operated using the pressure of fluid (air, oil).

Said structure WHEREIN: A convex part is formed in the inner surface of the said wall part, The recessed part fitted to the said convex part is formed in the said heat insulating material, and it is preferable that the said attachment member is fixed to the front-end | tip of the said convex part.
According to this configuration, the heat insulating material can be easily positioned with respect to the wall portion by fitting the concave portion provided in the heat insulating material to the convex portion provided in the wall portion.

A plurality of the convex portions and the concave portions may be formed.
According to this configuration, the heat insulating material can be more reliably positioned by fitting the concave portions to the plurality of convex portions, respectively.

  The actuator may be a drain pump that sucks condensed water dripped from the heat exchanger.

  According to the present invention, it is possible to easily attach the heat insulating material to the main body case, and it is possible to simplify the structure of the heat insulating material and suppress deterioration of the heat insulating property.

It is a block diagram of the air conditioning apparatus which can apply the attachment structure of the heat insulating material of this invention. It is side surface sectional drawing (AA arrow sectional drawing of FIG. 3) which shows the indoor unit of the air conditioning apparatus in the 1st Embodiment of this invention. It is a plane explanatory view of an indoor unit. It is a front view of an indoor unit. It is a bottom view of an indoor unit. It is side surface sectional drawing (BB sectional drawing of FIG. 3) of an indoor unit. It is a disassembled perspective view which shows the attachment structure of a heat insulating material. It is side surface sectional drawing which shows the attachment structure of a heat insulating material. It is CC sectional view taken on the line of FIG. It is side surface sectional drawing which shows the attachment structure of the heat insulating material which concerns on the 2nd Embodiment of this invention.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a configuration diagram of an air conditioner to which the heat insulating material mounting structure of the present invention can be applied. The air conditioner 10 includes an indoor unit (use side unit) 11 and an outdoor unit (heat source side unit) 12.
The outdoor unit 12 is provided with a compressor 14, a four-way switching valve 18, an outdoor heat exchanger 15, an outdoor expansion valve 16, and the like, which are connected by a refrigerant pipe 25. Further, the outdoor unit 12 is provided with an outdoor blower fan 20.

A gas side shut-off valve 22 and a liquid side shut-off valve 23 are provided at a terminal portion of the internal refrigerant circuit of the outdoor unit 12. The gas side closing valve 22 is arranged on the four-way switching valve 18 side, and the liquid side closing valve 23 is arranged on the outdoor expansion valve 16 side.
The indoor unit 11 is provided with an indoor expansion valve 28, an indoor heat exchanger 13, and the like. The gas side closing valve 22 and the indoor heat exchanger 13 are connected by a gas side refrigerant communication pipe 24, and the liquid side closing valve 23 and the indoor expansion valve 28 are connected by a liquid side refrigerant communication pipe 26.

  In the air conditioner 10 having the above-described configuration, when the cooling operation is performed, the four-way switching valve 18 is maintained in a state indicated by a solid line in FIG. As indicated by solid arrows, the high-temperature and high-pressure gaseous refrigerant discharged from the compressor 14 flows into the outdoor heat exchanger 15 via the four-way switching valve 18, and the outdoor blower fan 20 is operated to Heat exchanges to condense and liquefy. The liquefied refrigerant passes through the substantially fully opened outdoor expansion valve 16 and flows into the indoor unit 11 through the liquid side refrigerant communication pipe 26. In the indoor unit 11, the refrigerant is depressurized to a predetermined low pressure by the indoor expansion valve 28 and further evaporated by exchanging heat with indoor air in the indoor heat exchanger 13. Then, the indoor air cooled by the evaporation of the refrigerant is blown into the room by the indoor blower fan 19 to cool the room. The refrigerant evaporated and vaporized in the indoor heat exchanger 13 returns to the outdoor unit 12 through the gas side refrigerant communication pipe 24, and is sucked into the compressor 14 through the four-way switching valve 18.

  On the other hand, when the heating operation is performed, the four-way switching valve 18 is held in a state indicated by a broken line in FIG. As indicated by dotted arrows, the high-temperature and high-pressure gaseous refrigerant discharged from the compressor 14 flows into the indoor heat exchanger 13 of the indoor unit 11 through the four-way switching valve 18 and exchanges heat with the indoor air. To condense and liquefy. The room air heated by the condensation of the refrigerant is blown into the room by the room blower fan 19 to heat the room. The refrigerant liquefied in the indoor heat exchanger 13 returns to the outdoor unit 12 through the liquid side refrigerant communication pipe 26 from the indoor expansion valve 28 that is substantially fully open. The refrigerant that has returned to the outdoor unit 12 is decompressed to a predetermined low pressure by the outdoor expansion valve 16, and evaporates by exchanging heat with outdoor air in the outdoor heat exchanger 15. Then, the refrigerant evaporated and evaporated in the outdoor heat exchanger 15 is sucked into the compressor 14 through the four-way switching valve 18.

2 is a side cross-sectional view (a cross-sectional view taken along the line AA in FIG. 3) showing the indoor unit 11 of the air conditioner 10, FIG. 3 is an explanatory plan view of the indoor unit 11, and FIG. FIG. 5 is a bottom view of the indoor unit 11.
The indoor unit 11 is a ceiling-embedded indoor unit that is installed behind the ceiling of the room, and includes a main body case 31, a decorative panel 32, an indoor blower fan 19, an indoor heat exchanger 13, a drain pan 33, and the like. .

  The main body case 31 includes a rectangular upper wall portion 35 in plan view and four peripheral wall portions (front wall portion 36, rear wall portion 37, left wall portion) that hang downward from four sides of the upper wall portion 35. 38, the right wall portion 39) and a box shape opened downward. A decorative panel 32 is attached to the opening at the lower end of the main body case 31. As shown in FIG. 4, the main body case 31 is suspended from the lower surface of the upper floor above the ceiling 30 via suspension bolts 40, and the decorative panel 32 is disposed along the lower surface of the ceiling 30. ing.

As shown in FIGS. 2 and 3, the interior of the main body case 31 is partitioned into a blower chamber 43 and a heat exchange chamber 44 by a partition plate 42. In the present specification, the blower chamber 43 side is the rear side, and the heat exchange chamber side is the front side.
The decorative panel 32 includes a suction port 45 below the blower chamber 43 and a blower outlet 46 below the front side of the heat exchange chamber 44. A lattice-shaped grille 47 is attached to the suction port 45, and an air guide plate 48 that adjusts the air blowing direction is swingably provided at the air outlet 46.

  In the blower chamber 43, two indoor blow fans 19 are arranged at intervals in the left-right direction. An electric motor 50 is disposed between the two indoor air blowing fans 19, and both the indoor air blowing fans 19 are driven by the electric motor 50. The indoor blower fan 19 of the present embodiment is a sirocco fan including a substantially cylindrical casing 19a and an impeller 19b provided in the casing 19a. A suction port 19a1 is formed on the side surface of the casing 19a, and a discharge port 19a2 projects forward from the front portion of the casing 19a. The discharge port 19a2 is inserted in a state of being sealed in an opening formed in the partition plate.

  When the indoor blower fan 19 is activated, the indoor air is taken into the blower chamber 43 from the suction port 45 and sucked into the suction port 19a1 of the casing 19a, and then blown out from the discharge port 19a2 to the heat exchange chamber 44. Therefore, the space in the blower chamber 43 is a suction space into which air is sucked by the indoor blower fan 19, and the space of the heat exchange chamber 44 is a blowout space in which air is blown out by the indoor blower fan 19.

  The indoor heat exchanger 13 is arranged in the heat exchange chamber 44. The indoor heat exchanger 13 is, for example, a cross-fin type fin-and-tube heat exchanger that includes a large number of fins arranged side by side in the left-right direction and heat transfer tubes provided so as to penetrate the fins. It is said. The indoor heat exchanger 13 has an upper part located on the front side (blower 46 side; downstream side of the airflow) and a lower part located on the rear side (indoor blower fan 19 side; upstream side of the airflow). It is arranged at an angle. The air blown from the indoor blower fan 19 to the heat exchange chamber 44 is heat-exchanged with the indoor heat exchanger 13 and then blown into the room from the blowout port 46. A drain pan 33 is provided below the indoor heat exchanger 13, and the dew condensation water generated in the indoor heat exchanger 13 is received by the drain pan 33.

  The drain pan 33 is made of a highly heat-insulating material such as expanded polystyrene, and also functions as a heat insulating material. In addition, heat insulating materials 54 to 57 made of foamed polystyrene or the like are provided on the inner surfaces of the upper wall portion 35, the front wall portion 36, and the left and right wall portions 38 and 39 of the main body case 31 in the heat exchange chamber 44.

  FIG. 6 is a side cross-sectional view of the indoor unit (a cross-sectional view taken along arrow BB in FIG. 3). As shown in FIGS. 3 and 6, an electrical component unit 58 is disposed at the right end of the blower chamber 43. The electrical component unit 58 includes an electrical component box 59, a control board 60, a terminal block 61, and the like housed in the electrical component box 59. In addition, at the right end of the heat exchange chamber 44, a piping group 62 such as a flow divider and a header connected to the indoor heat exchanger 13, and electrical components such as a drain pump 63, an indoor expansion valve 28, and a thermistor are arranged. Yes. The electrical wiring 64 of these electrical components is connected to the electrical component unit 58 from the heat exchange chamber 44 through the partition plate 42.

  As shown in FIG. 6, the drain pump 63 discharges the condensed water stored in the drain pan 33 to the outside by operating a built-in motor (actuator). The drain pump 63 is attached and fixed to the upper wall portion 35 of the main body case 31 via an attachment base (attachment member) 66. A float sensor 65 is also attached to the mounting base 66. The drain pump 63 and the float sensor 65 are assembled as one unit by a connecting frame 67. A guide claw 68 that guides the electrical wiring 64 of the indoor expansion valve 28, the electrical wiring of the thermistor, and the like is integrally formed on the connection frame 67. The guide claw 68 supports the electrical wiring 64 so that it does not hang down to the drain pan 33 side.

The mounting base 66 is formed in a U shape in a side view from front and rear leg plates 69 and a base plate 70 that connects lower end portions of both leg plates 69. A fixing piece 71 bent at a substantially right angle is provided at the upper end portion of the leg plate 69, and the fixing piece 71 is fixed to the upper wall portion 35.
7 is an exploded perspective view showing the heat insulating material mounting structure, FIG. 8 is a side cross-sectional view showing the heat insulating material mounting structure, and FIG. 9 is a cross-sectional view taken along the line CC in FIG. On the upper wall portion 35 of the main body case 31, a truncated cone-shaped convex portion 72 protruding downward is formed side by side in the front-rear direction. The convex portion 72 is formed by bending the upper wall portion 35 toward the inner surface side. A female screw hole 73 is formed in the tip surface of the convex portion 72. Further, the height of the convex portion 72 is set to a dimension that substantially matches or is slightly smaller than the thickness of the heat insulating material 54 attached to the inner surface of the upper wall portion 35.

  On the other hand, the heat insulating material 54 attached to the inner surface of the upper wall portion 35 is formed with a concave portion 75 to be fitted to the convex portion 72. The concave portion 75 has a truncated cone shape that matches the shape of the convex portion 72 and penetrates the heat insulating material 54 in the vertical direction. The heat insulating material 54 is positioned with respect to the upper wall portion 35 by fitting the concave portion 75 of the heat insulating material 54 to the convex portion 72 of the upper wall portion 35. In addition, by forming the convex portion 72 and the concave portion 75 in the shape of a truncated cone, since the hole diameter of the concave portion 75 is larger than the tip diameter of the convex portion 72 at the beginning of fitting the concave portion 75 to the convex portion 72, it is easy. By completely fitting the concave portion 75 with respect to the convex portion 72, the horizontal displacement of both is corrected, and the heat insulating material 54 is accurately positioned with respect to the upper wall portion 35. It has come to be.

  An insertion hole 76 is formed in the fixed piece 71 of the mounting base 66. Then, with the fixing piece 71 in contact with the tip surface of the convex portion 72, the fixing screw 77 inserted through the insertion hole 76 is screwed into the female screw hole 73, thereby fixing the mounting base 66 to the upper wall portion 35. can do. At this time, the heat insulating material 54 is attached to the inner surface of the upper wall portion 35 by being sandwiched between the fixed piece 71 and the upper wall portion 35. Therefore, the mounting base 66 also functions as an attachment member for attaching the heat insulating material 54 to the upper wall portion 35.

  With the configuration as described above, the heat insulating material 54 can be easily positioned and attached to the upper wall portion 35. Since it is not necessary to form a large opening or the like for avoiding the leg plate 69 of the mounting base 66 in the heat insulating material 54, the structure can be simplified, and most of the upper wall portion 35 is made of the heat insulating material 54. It is possible to cover with, and the thermal insulation is hardly deteriorated. In addition, since the upper wall portion 35 and the heat insulating material 54 are respectively formed with two convex portions 72 and a concave portion 75, the front and rear, right and left positions of the heat insulating material 54 with respect to the upper wall portion 35 and the horizontal angle are ensured. Can be positioned.

  In addition, the drain pump (actuator) 63 attached to the mounting base 66 generates vibration and sound when the built-in motor operates, but the heat insulating material 54 is provided between the mounting base 66 and the upper wall portion 35. Since it is interposed, the heat insulating material 54 functions as a cushioning material that relieves vibration and sound, and the transmission of vibration and sound to the upper wall portion 35 can be suppressed. Further, if the height of the convex portion 72 is made slightly lower than the thickness of the heat insulating material 54, the heat insulating material 54 can be compressed between the two when the fixing piece 71 of the mounting base 66 is attached to the convex portion 72. As a result, the mounting base 66 can be mounted more stably and the occurrence of vibrations can be suppressed.

  FIG. 10 is a side sectional view showing a heat insulating material mounting structure according to the second embodiment of the present invention. In the present embodiment, the convex portion 72 as in the first embodiment is not formed, and the concave portion 75 of the heat insulating material 54 is not a truncated cone shape, but is constituted by a cylindrical hole having a constant inner diameter. ing. In the present embodiment, a cylindrical collar 79 is inserted into the recess 75.

  In the present embodiment, the mounting base 66 is formed by screwing the insertion hole 76 formed in the fixing piece 71 of the mounting base 66 and the screw 77 inserted into the collar 79 into the female screw hole 73 of the upper wall portion 35. Is fixed to the upper wall portion 35. Therefore, also in the present embodiment, the heat insulating material 54 can be sandwiched between the upper wall portion 35 and the fixed piece 71, and thus the heat insulating material 54 can be attached to the upper wall portion 35.

  In the present embodiment, the heat insulating material 54 cannot be positioned with respect to the upper wall portion 35, and the number of parts is increased by the collar 79. In these respects, the first embodiment is more advantageous.

The present invention is not limited to the above-described embodiment, and can be appropriately changed within the scope of the invention described in the claims.
For example, the number of the convex portions 72 provided on the upper wall portion 35 is not limited to two, and may be one or three or more. The number of the concave portions 75 provided on the heat insulating material 54 may be the convex portions 72. Can be formed according to the number.

  The present invention can also be applied to attach the heat insulating materials 55 to 57 to the inner surfaces of the wall portions 36, 38 and 39 other than the upper wall portion 35. Further, in the present invention, a heat insulating material may be sandwiched between an attachment member for an actuator other than the drain pump 63 and the wall portion. Further, the present invention can be applied not only to the ceiling-embedded indoor unit 11 but also to the indoor unit 11 such as a ceiling-suspended type and a wall-mounted type. Further, the present invention can be applied not only to the indoor unit 11 but also to the outdoor unit 12.

DESCRIPTION OF SYMBOLS 10: Air conditioning apparatus 13: Indoor heat exchanger 31: Main body case 35: Upper wall part 54: Heat insulating material 63: Drain pump (actuator)
66: Mounting base 72: Convex part 75: Concave part

Claims (4)

  Between the wall part (35) of the main body case (31) that houses the heat exchanger (13) and the mounting member (66) for the actuator (62) fixed to the inner surface of the wall part (35). A heat insulating material mounting structure in an air conditioner, wherein the heat insulating material (54) is attached to the inner surface of the wall (35) by sandwiching the heat insulating material (54).   A convex portion (72) is formed on the inner surface of the wall portion (35), and a concave portion (75) that fits into the convex portion (72) is formed in the heat insulating material (54), and the convex portion (72) The heat insulating material mounting structure in the air conditioner according to claim 1, wherein the mounting member (66) is fixed to a tip.   The attachment structure of the heat insulating material in the air conditioning apparatus of Claim 2 with which the said convex part (72) and the said recessed part (75) are formed in multiple numbers, respectively.   The attachment structure of the heat insulating material in the air conditioning apparatus of any one of Claims 1-3 whose said actuator (62) is a drain pump which attracts | sucks the condensed water dripped from the said heat exchanger (13).

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