JP2011094889A - Duct type air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a duct type air conditioner, which is configured to prevent deterioration of heat exchange efficiency resulting from air not passed through a heat exchanger, while attaining a reduced or compact size of a body even when an electric component box and a drain pump are disposed within the body, and which is further provided with a protection means for protecting the drain pipe from dripping condensate water. <P>SOLUTION: The electric component box 14 and the drain pump 12 for discharging condensate water are provided on one side within a casing, and a wind shielding plate 13 is provided on a side surface of an indoor heat exchanger 10. A lower portion of the wind shielding plate 13 is bent, whereby a protection cover part 13b for protecting the drain pump 12 from condensate water is integrally formed so as not to obstruct the arrangement of the drain pump 12. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a duct type air conditioner, and more particularly to a protection means for a drain pump disposed in a dew tray.

  2. Description of the Related Art A duct type air conditioner in which a blowout duct is connected to a main body that is installed in a ceiling space of a building and accommodates an indoor heat exchanger and a fan is known. The duct type air conditioner has a panel specification type and a duct specification type. For example, the air conditioner 30 shown in FIG. 6 is a duct specification type and is fixed to a plurality of suspension bolts 32 attached to the ceiling surface 50 of the building. The main body 31, the indoor ceiling surface 51, one end serving as the suction port 34 is opened, the other end is connected to the main body 31, and the other end is connected to the main body 31 to serve as the air outlet 36. The main body 31 is provided with an electrical component box 33 that accommodates a control board and the like.

  The main body 31 is composed of a side plate arranged in a rectangular frame shape so as to be opposed to each other, a box body having an open top surface made of a bottom plate, and a top plate covering the open top surface of the box body. A heat insulating material for preventing condensation is attached to the inner or outer surface of the top plate. The inside of the main body 31 is partitioned into a blower chamber and a heat exchanger chamber by a partition plate 40 which will be described later. On the suction duct 35 side, a plurality of blower fans and a partition plate that drives the blower fan are fixed. A fan chamber in which the fan motor is housed is formed, and a heat exchanger chamber in which a heat exchanger and a drain pan for storing condensed water dripping from the heat exchanger is formed on the outlet duct 37 side. Has been.

  The air sucked from the suction port 34 is sucked into the blower chamber in the main body 31 through the suction duct 35, sent out to the heat exchanger chamber by the blower fan, and exchanged heat with the refrigerant through the heat exchanger. . The heat-exchanged air is sent into the room from the air outlet 36 via the air outlet duct 37.

  In recent years, the heat exchanger has been reduced in size by improving the heat exchange efficiency, and as a result, the electrical component box attached to the outside of the housing has been built in the housing. When the electrical component box is built in the housing, a gap occurs on the side of the heat exchanger due to space, and air that is not heat exchanged passes through the gap, resulting in a disadvantage that the heat exchange efficiency decreases. To do.

  Duct type air conditioners are usually placed horizontally between the ceiling surface of the building and the ceiling surface of the room, but there may not be enough space between the ceiling surface of the building and the ceiling surface of the room. The duct type air conditioner is installed vertically when the discharge basket connected to the dew tray is a complicated path meandering up and down in the ceiling surface.

Also, when installed horizontally, the installation location of the duct-type air conditioner is relatively low, and the piping, especially the drainage pipe from the dew tray becomes complicated, and the condensate is discharged. When there is a possibility that trouble will occur, a drain pump is provided on one side of the dew tray, and the condensed water is discharged by the drain pump.

  As described above, when the electrical component box and the drain pump are built in the main body 31 and the prevention means for preventing air that does not pass through the heat exchanger is provided, the main body 31 can be reduced in size and size. As a result, it was an obstacle to downsizing and downsizing duct-type air conditioners.

  Moreover, if a drain pump is installed on the dew tray that stores the condensed water, the condensed water from the heat exchanger may be scattered or dripped onto the drain pump. The drain pump includes a power supply unit and a control unit for driving the motor, and is connected to a wiring cord. If the condensed water is applied, the motor or the like may be broken.

For the problem that the condensed water or condensed water is scattered or dripped, for example, in Japanese Utility Model Laid-Open No. 1-169724, a support plate provided with a fixing piece for fixing to the frame of the housing on the side plate of the heat exchanger is provided. There is disclosed a technique in which a bent piece facing the dew tray is formed at the lower part of the fixed piece and the condensed water condensed on the support plate is guided to the dew plate. As described above, there is an example in which the guide means for guiding the condensed water and the dew condensation water to the dew tray is formed, but the prevention of the main body from being enlarged when the drain pump is arranged or the protection means for the drain pump is not considered. . Even if the electrical component box and drain pump attached outside the main body are incorporated in the main body 31, the protective means for protecting the drain pump from condensed water or condensed water while preventing the main body 31 from becoming large. And a duct type air conditioner provided with means for preventing the scattering of condensed water has been demanded.

JP 2000-274728 A (page 4, FIG. 5)

  In view of the above-described problems, the present invention prevents an increase in the size of the main body even if an electrical component box and a drain pump are arranged in the main body and a windshield plate is further arranged in the vicinity of the drain pump. An object of the present invention is to provide a duct-type air conditioner that is provided with protection means that achieves downsizing and downsizing and protects a drain pump built in a main body from condensed water dripping from a heat exchanger.

  In order to solve the above-mentioned problems, the present invention provides a blower chamber in which a blower fan is housed in a housing provided with a suction port and a blower outlet, and condensed water dripped from the heat exchanger and the heat exchanger. A duct-type air conditioner that is partitioned into a heat exchanger chamber that stores a dew tray that is stored, a fan motor that drives the blower fan is fixed to the partition plate, and an electrical component box is attached to the housing. In the machine, the electrical component box and a drain pump for discharging condensed water are provided on one side of the housing, and a windshield is provided on the side surface of the heat exchanger and in the vicinity of the drain pump. The lower portion of the windshield is bent so as not to interfere with the drain pump, and the bent portion serves as a protective cover portion for protecting the drain pump from condensed water.

  In addition, the dew tray has a condensate receiving portion when the casing is installed horizontally and a condensate receiving portion when the casing is installed vertically, and the protective cover portion of the heat exchanger A horizontal portion formed by bending a wind shield covering the side surface, a slope portion connected to the horizontal portion, and a water guide portion and a water guide portion formed by bending the tip portion of the slope portion into an L shape. Condensed water dropped from the heat exchanger onto the wind shield part is received by the horizontal part, the slope part, and the water guide part when the dew tray is placed vertically. It has the structure which has the water guide function which leads to a part.

  According to the first aspect of the present invention, the drain pump is formed by bending the lower part of the wind shield so that the wind shield does not obstruct the arrangement of the drain pump while the electrical component box and the drain pump are built in the housing. A protective cover is provided. As a result, the housing can be reduced in size and size while the electrical component box and the drain pump are incorporated.

  According to invention of Claim 2, the said protective cover part consists of a horizontal part, a slope part, the water guide part formed by bending in the L-shape at the front-end | tip part of the slope part, and a water guide part cover. The condensed water dripped from the heat exchanger to the wind shield part has a water guiding function for guiding the condensed water to the dew tray, so that the condensed water scattered in the drain pump can be prevented.

It is the external appearance exploded perspective view and sectional drawing of the duct type air conditioner by this invention. It is explanatory drawing which shows arrangement | positioning with the horizontal type | mold of the duct type air conditioner by this invention, and a vertical type | mold. It is a perspective view which shows the inside of the housing | casing at the time of installing vertically. It is a perspective view which shows the positional relationship of a windshield and a drain pump. It is a perspective view which shows the structure of a windshield. It is explanatory drawing which shows the conventional duct type air conditioner.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail as examples based on the attached drawings.

  The duct type air conditioner by this invention is shown with the perspective view of FIG. 1 (A), and sectional drawing of FIG. 1 (B). The perspective view of FIG. 1 (A) is a perspective view from the blower chamber 4 side, which will be described later, and shows a state in which the top plate 2 is removed.

  As shown in the perspective view of FIG. 1 (A), the duct type air conditioner according to the present invention includes a bottom plate, a side plate provided around the four sides of the bottom plate, and a front plate to which a blowing duct is connected. Is formed by a box body 1 opened and a top plate 2 covering the opened upper surface of the box body 1. The heat insulating material which prevents that dew condensation generate | occur | produces on the surface of a side plate and a top plate is stuck. The side plate of the box body 1 whose upper surface is opened is provided with a plurality of suspension brackets (not shown), which are fixed to suspension bolts suspended from the ceiling of the building, so that the ceiling of the building and the ceiling surface of the room It can be hung between. In addition, an electrical component box 14 containing a control board and the like is built in one side of the housing.

  As shown in the cross-sectional view of FIG. 1B, the inside of the casing made up of the box body 1 and the top plate 2 whose upper surfaces are opened is partitioned into a blower chamber 4 and a heat exchanger chamber 5 by a partition plate 3. Yes. A suction port 6 having a mesh-like grill 6b is formed on one side of the casing on the blower chamber 4 side, and a suction duct (not shown) is connected to the suction port 6. . In addition, as shown in FIG. 1A, the blower chamber 4 is provided with a pair of left and right blower fans 8, and a fan motor 9 having a rotating shaft projecting on both sides is provided at the center of the blower fan 8. It is fixed and arranged on the partition plate 3. The rotating shaft of the fan motor 9 is connected to a rotating blade 8b housed in a casing 8a of the blower fan 8, and is driven to rotate. Further, the outlet 8 d of the blower fan 8 is provided so as to protrude into the heat exchanger chamber 5 from the opening opened in the partition plate 3. Note that the blower fan 8 is a sirocco fan, and has suction ports 8b on both sides of the casing 8a. The air flowing in from the suction port 6 of the casing is sucked from the suction port 8b of the casing 8a, and is rotated by the rotating blade 8c. It sends out to the heat exchanger chamber 5 from the delivery port 8d of the front-end | tip part of the casing 8a.

  The mesh-like grill 6b that forms the suction port 6 of the housing may or may not be connected to a suction duct (not shown) in the opening, and can be selectively used as necessary.

  A front plate 1a is provided on the other side of the housing on the heat exchanger chamber 5 side, and an outlet duct connection port 7 to which an outlet duct (not shown) is connected is formed on the front plate 1a. One end of the blowout duct is connected to the blowout duct connection port 7 and the other end is connected to the opening of the indoor ceiling.

The heat exchanger chamber 5 is provided with an indoor heat exchanger 10 that is inclined downward from the outlet duct connection port 7 toward the partition plate 3. The indoor heat exchanger 10 includes a large number of parallel fins and heat transfer tubes arranged in a meandering manner so as to be orthogonal to the fins, and the heat transfer tubes are connected to an outdoor unit (not shown) via a pipe. It has become so. In addition, a dew tray 11 that receives condensed water condensed on the surface of the indoor heat exchanger 10 is provided on the bottom surface of the heat exchanger chamber 5. The dew receiving tray 11 has a bottom surface portion 11b that receives condensed water during horizontal installation of a case described later,
At the time of vertical installation, the partition plate 3 is formed in an L-shaped cross section having a bottom surface portion 11c of a rising portion 11a capable of receiving condensed water, whereby the duct type air conditioner is a heat exchanger. It can also be used in a vertical installation with the chamber 5 at the top. The condensed water stored in the dew tray 11 is discharged to the outside by a drainage tub not shown.

  The air sucked from the suction port 6 of the housing is sent to the heat exchanger chamber 5 by the blower fan 8 of the blower chamber 4 and is heat-exchanged with the refrigerant in the indoor heat exchanger 10. The air is blown into the room through a blown duct (not shown) connected to perform indoor air conditioning.

  As shown in FIG. 2 (A), the duct-type air conditioner is usually installed horizontally in the ceiling surface, but when a sufficient installation space cannot be secured in the ceiling surface, FIG. 2 (B). As shown in FIG. 2, the suspension fitting 1b is installed vertically in the ceiling surface, and is fixed to a suspension bolt (not shown) so as to be installed in the ceiling surface.

  When installed horizontally, the bottom surface portion 11b of the dew receiving tray 11 serves as a receiving portion for the condensed water dripped from the indoor heat exchanger 10, and the condensed water stored in the bottom surface portion 11b is exposed to the outside by the drain pipe 11d. It is discharged or sucked by a drain pump 12 described later and appropriately discharged by a drain pipe 12a.

  As shown in FIG. 3, the configuration inside the casing when installed vertically is the bottom portion 11 c of the rising portion 11 a of the dew tray 11 serving as a receiving portion for the condensed water dripped from the indoor heat exchanger 10. Since the bottom surface portion 11c has a distance in the height direction to the bottom surface portion of the housing having the hanging metal fitting 1b shown in FIG. 2, the condensed water stored in the bottom surface portion 11c is transferred to the bottom surface portion of the housing. It naturally falls to the drainage pipe 11d located and is discharged to the outside. Therefore, when installed vertically, there is no need to operate the drain pump 12 described later.

  As shown in FIG. 3, a drain pump 12 is provided in the housing, and the drain pump 12 is located at one side of the housing in which the above-described electrical component box 14 is disposed, and a position that is front and rear with the electrical component box 14. Arranged in relation. Further, on one side of the indoor heat exchanger 10 installed in an inclined manner in the heat exchanger chamber 5, a wind shielding plate 13 formed in a flat plate shape is provided so as to be parallel to the indoor heat exchanger 10. It has been. If the air sent to the heat exchanger chamber 5 from the outlet 8 c of the blower fan 8 does not pass through the heat exchanger 10, the air that is not heat exchanged is blown out through the outlet duct connection port 7. Therefore, the cooling / heating efficiency is lowered, so that the air that does not pass through the heat exchanger 10 is provided. As a result, all of the air sent to the heat exchanger chamber 5 passes through the indoor heat exchanger 10 and is subjected to heat exchange, thereby preventing a decrease in cooling / heating efficiency. Further, the wind shielding plate 13 is integrally formed by bending the lower portion so as not to interfere with the drain pump 12 disposed on one side of the dew tray 11, and the further bent portion is a drain. It is formed as a protective cover portion 13b that protects the pump 12 from condensed water.

  Condensed water dripping from the fin 10a of the indoor heat exchanger 10 or the heat transfer tube 10b protruding from the side surface of the indoor heat exchanger 10 may be dripped and scattered on the drain pump 12 disposed on one side of the dew tray 11. However, the protective cover portion 13b is provided to protect the drain pump 12 from the condensed water dripping while avoiding the wind shield plate 13 from interfering with the drain pump 12. The drain pump 12 has a built-in motor serving as a power source and a control board for controlling the motor, and is connected to the power wiring of the motor. If the condensed water is applied to these, the drain pump 12 may be damaged. However, the protective cover portion 13b prevents such a failure from occurring.

  Next, the overall shape of the wind shield 13 will be described. As shown in FIG. 5, the wind shielding plate 13 is formed in a flat plate shape, and includes a wind shielding portion 13 a that covers the side surface of the heat exchanger 10, and the above-described protective cover portion 13 b that is located below the wind shielding portion 13 a. Thus, a plurality of fixing screw holes 13g are formed in the periphery of the wind shield portion 13a.

  The protective cover portion 13b is bent from the wind shield portion 13a and, when installed vertically, a horizontal portion 13c that becomes horizontal, and a tapered slope that is formed continuously from the horizontal portion 13c and becomes a slope. 13d, and a water guide portion 13e and a water guide portion cover 13f formed by bending the tapered tip portion of the slope portion 13d into an L shape. The horizontal portion 13c and the slope portion 13d are assembled. The drain pump 12 is formed so as to escape from the main body, and the water guide portion 13e and the water guide portion cover 13f are formed so as to escape the hose, the connection tool, and the like of the drain pump 12. When installed vertically, the horizontal portion 13c and the slope portion 13d are located on the bottom surface portion 11b side of the dew tray 11 to cover the drain pump 12, and the condensed water flows down from the horizontal portion 13c toward the slope portion 13d. Yes.

  Next, the effect at the time of vertical installation will be described. When the wind shielding plate 13 is installed on the side surface of the heat exchanger 10, the wind shielding portion 13a blocks air that is about to pass through the side surface of the heat exchanger 10, and when the cooling operation is performed during the vertical installation. Condensed water drops from the heat transfer tube 10b protruding from the side surface of the indoor heat exchanger 10 to the wind shield 13a, and the wind shield plate 13 is also cooled by the indoor heat exchanger 10 and collides with the wind shield 13a. Condensation forms, and dew condensation water is generated on the surface of the wind shielding portion 13a.

  Condensed water dripped from the heat transfer tube 10b onto the wind shielding portion 13a and condensed water condensed on the surface of the wind shielding portion 13a are dripped onto the horizontal portion 13c of the protective cover portion 13b and continuously to the horizontal portion 13c. Water is collected by the formed tapered slope portion 13d without being scattered around. The collected condensed water or condensed water flows down the slope portion 13d and is poured into the water guide portion 13e having the water guide portion cover 13f. Subsequently, the condensed water or dewed water flows down from the water guide portion 13e to the bottom surface portion 11c of the rising portion 11a serving as the condensed water receiving portion of the dew tray 11 not shown in FIG. 5 when installed vertically. It is to be stored in. The stored condensed water or condensed water is discharged to the outside through a drainage basin 11d.

  As described above, while the electrical component box 14 and the drain pump 12 are built in the housing, the wind shield plate 13 prevents a decrease in heat exchange efficiency, and the wind shield plate 13 does not interfere with the drain pump 12. As described above, the lower portion of the wind shielding plate 13 is bent and the protective cover portion 13b of the drain pump 12 is provided. As described above, the protective cover portion 13b is formed so that the horizontal portion 13c and the slope portion 13d escape from the main body portion of the drain pump 12, while the drain pump 12 is covered. Condensed water flows down from the portion 13c toward the slope portion 13d. Moreover, the water guide part 13e and the water guide part cover 13f are located in the front side at the time of installing vertically so that the hose etc. of the drain pump 12 may escape. As described above, since the drain pump 12 and the electrical component box 14 can be arranged close to each other, the housing can be reduced in size and size while the drain pump 12 and the electrical component box 14 are incorporated. . Further, the protective cover portion 13b formed integrally with the wind shielding plate 13 not only covers the drain pump 12 but prevents the condensed water or condensed water from splashing on the drain pump 12, but also drops on the wind shielding portion 13a. The condensed water or the generated condensed water is not scattered to the surroundings, but also has a function of guiding the condensed water or the condensed water to the dew tray 11, thereby eliminating the risk of the condensed water or condensed water being applied to the drain pump 12. .

DESCRIPTION OF SYMBOLS 1 Box 2 Top plate 3 Partition plate 4 Blower room 5 Heat exchanger room 6 Suction port 7 Outlet duct connection port 8 Blower fan 8a Fan casing 8b Rotating blade 8c Outlet 9 Fan motor 10 Indoor heat exchanger 11 Dew tray 11a Standing up Portions 11b, 11c Bottom portion 12 Drain pump 12a Drain pipe 13 Wind shield plate 13a Wind shield portion 13b Protective cover portion 13c Horizontal portion 13d Slope portion 13e Water guide portion 13f Water guide portion cover 13g Screw hole 14 Electrical component box

Claims (2)

A heat exchanger containing a blower chamber that houses a blower fan and a dew tray that stores condensed water dripping from the heat exchanger by a partition plate inside a housing having a suction port and a blower outlet. A duct-type air conditioner that is partitioned into a chamber, a fan motor that drives the blower fan is fixed to the partition plate, and an electrical component box is attached to the housing;
The electrical component box and a drain pump for discharging condensed water are provided on one side of the housing, and a wind shielding plate is provided on the side of the heat exchanger and in the vicinity of the drain pump. A duct type air conditioner characterized in that the lower part of the plate is bent so as not to interfere with the drain pump, and the bent part serves as a protective cover part for protecting the drain pump from condensed water.   The dew receiving tray has a condensate receiving portion when the casing is installed horizontally and a condensate receiving portion when the casing is installed vertically, and the protective cover portion covers the side surface of the heat exchanger. A horizontal portion formed by bending the wind shielding portion to be covered, a slope portion connected to the horizontal portion, a water guide portion formed by bending the tip portion of the slope portion into an L shape, and a water guide portion cover Condensed water dripped from the heat exchanger to the wind shield part is received by the horizontal part, the slope part, and the water guide part in the condensed water receiving part when the dew tray is installed vertically. The duct-type air conditioner according to claim 1, wherein the duct-type air conditioner has a function of guiding water.

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