JP2009145025A - Air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air conditioner capable of effectively exerting capability of a heat exchanger 30, and having high thermal efficiency, in an air conditioner 1 provided with a circulation passage 11 continuing from a suction opening 13 opened on the undersurface of a casing to a blowout opening 14, a circulation fan 20 circulating indoor air through the circulation passage 11, a heat exchanger 30 incorporated in the upper side of the suction opening 13 in the circulation passage 11, and exchanging heat with air introduced in the circulation passage 11, and a water reception part receiving drain dripping from the inside of the circulation passage 11 toward the suction port 13. <P>SOLUTION: The suction opening 13 is provided with a suction grille 15 formed by arranging a groove-shaped grille bars 150 opened upward in a grid-like form; the grille bars 150 adjacent to each other are arranged without space between in the top view in a state having a space in the vertical direction; and the suction grille 15 is used as the water reception part. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an air conditioner, and more particularly to an air conditioner having a configuration capable of collecting drain dripping from an inner wall of a circulation passage, a surface of a heat exchanger, and the like to a suction port side.

  In an air conditioner that circulates indoor air through a heat exchanger, condensation on the surface of the heat exchanger, that is, so-called drain, is prevented from leaking into the room through the suction port of the casing. Some have a water tray that can collect the drain below.

  FIG. 10 is a schematic vertical cross-sectional view of a conventional air conditioner 6 equipped with the above-described water tray. In the casing 60 fixed to the wall surface of the room, air is blown from a suction port 63 provided on the lower surface of the casing 60. A circulation passage 61 connected to the outlet 64 is formed. The suction port 63 is covered with an intake grill 65 composed of a plurality of grill bars 650 arranged in a lattice pattern, and the indoor air passes through a gap (hereinafter referred to as “slit”) 630 between the grill bars 650. Flows into the circulation passage 61.

  In addition, a circulation fan 70 that circulates indoor air through the circulation passage 61 and a heat exchanger 80 that performs heat exchange with the air taken into the circulation passage 61 are arranged at the intermediate portion of the circulation passage 61. It is installed.

  Further, below the heat exchanger 80, a water tray 90 for receiving condensation generated on the surface of the heat exchanger 80 is disposed.

Therefore, in this case, for example, even if dew condensation generated on the surface of the heat exchanger 80, that is, so-called drain is dropped on the suction port 63 side, the drain is provided in the water tray provided below the heat exchanger 80. 90 is recovered. Accordingly, it is possible to avoid the inconvenience that the drain leaks from the suction port 63 through the slit 630 into the room.
JP 2000-337652 A

  However, in the above-mentioned conventional one, since a relatively wide range below the heat exchanger 80 is covered with the water tray 90 in order to collect drain dripping from the surface of the heat exchanger 80, the slit 630 is used. The air taken into the circulation passage 61 from the suction port 63 side reaches the heat exchanger 80 through a path that bypasses the water tray 90. For this reason, the said air did not pass uniformly over the whole surface of the heat exchanger 80, and the capability of the heat exchanger 80 was not fully exhibited.

The present invention has been made in view of such points,
“A circulation passage that is connected to the air outlet from the suction port established on the lower surface of the casing, a circulation fan that circulates the indoor air through the circulation passage, and the above-described suction port in the circulation passage and into the circulation passage. In the air conditioner equipped with a heat exchanger that performs heat exchange with the air that has been taken in and a water receiver that receives the drain dripping from the inside of the circulation passage to the suction port side, the capacity of the heat exchanger is effectively reduced. It is an object to provide an air conditioner with high thermal efficiency that can be demonstrated.

The technical means of the invention according to claim 1 for solving the above-mentioned problem is as follows:
“The intake port is provided with an intake grille in which groove-like grill bars that open upward are arranged in a grid,
The adjacent grill bars are arranged without a gap in a top view with a gap in the vertical direction,
The intake grill is the water receiving portion ”.

  In this case, since the intake grille, which is formed in a groove shape and is arranged in parallel with no gap in the top view, is provided at the suction port on the lower surface of the casing, it drops from the circulation passage to the suction port side. The drain to be received is received by the intake grill.

  On the other hand, since the adjacent grill bars have a gap in the vertical direction, the indoor air is guided into the circulation passage through the gap between the grill bars, and directly exchanges heat as it is. Reach the vessel.

  That is, by adopting a configuration in which the drain that drops from the circulation passage to the suction port side is received by the intake grille, the air taken into the circulation passage passes through the entire surface of the heat exchanger without detouring. Thereby, the capability of a heat exchanger is exhibited effectively.

The technical means of the invention according to claim 2 is:
In claim 1,
“The grill bar is formed in a substantially V-shaped cross section with both side edges rising obliquely upward”.

  In this case, since both side edges of the grill bar stand up diagonally upward, the indoor air is led into the circulation passage in a laminar flow state along the side edges, and is uniformly distributed over the entire surface of the heat exchanger. Go around. Thereby, the capability of a heat exchanger is exhibited more effectively.

The technical means of the invention according to claim 3 is:
In the claim 1 or 2,
“On the outer peripheral side of the intake grill, a recess capable of storing drain is formed,
The bottom of the upper surface of the grill bar is inclined downward toward the concave portion.

  In this case, the drain dripped onto the grill bar is sequentially sent to the concave part along the bottom of the upper surface, so that even if a relatively large amount of drain is generated in the circulation passage, the drain overflows from the grill bar. Absent.

Since the present invention has the above configuration, the present invention has the following specific effects.
In the invention according to claim 1, the ability of the heat exchanger is effectively exhibited by guiding the air taken into the circulation passage directly to the entire surface of the heat exchanger without detouring. Thermal efficiency is improved.

  In the invention which concerns on Claim 2, since the capability of a heat exchanger is exhibited more effectively by distributing the said air uniformly on the whole surface of a heat exchanger, thermal efficiency improves further.

  In the invention according to claim 3, by draining the drain received by the grill bar to the recess quickly, even if a relatively large amount of drain is generated in the circulation passage, the drain does not overflow from the grill bar. Therefore, it is possible to avoid the inconvenience that the drain leaks into the room from the suction port side.

  Next, the best mode for carrying out the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 is a schematic vertical cross-sectional view of an air conditioner according to an embodiment of the present invention, and FIG. 2 is an enlarged vertical cross-sectional view of the vicinity of the suction port. Details of each part will be described below.

  An air conditioner 1 shown in FIG. 1 is a bathroom heating / drying machine with a mist function embedded in a ceiling, and is attached to a mounting port S opened on a ceiling C of the bathroom in an embedded state from below. The outer casing is formed by 10A and the front panel 10B covering the case opening 100 at the lower end of the main body case 10A.

  Further, a ventilation unit 12 for discharging the air in the bathroom to the outdoors is connected to the unit connection port 101 on the side wall of the main body case 10A.

  In the main body case 10A, a substantially inverted U-shaped circulation passage 11 having both ends opened toward the case opening 100 is formed.

  In addition, a circulation fan 20 that incorporates the air in the bathroom into the circulation passage 11 and sends it back into the bathroom is incorporated in the intermediate portion of the circulation passage 11, and a passage (on the intake side across the circulation fan 20) ( Hereinafter, the lower end opening of 11a is connected to a suction port 13 of the front panel 10B, which will be described later, and the lower end opening of the exhaust side passage (hereinafter referred to as "exhaust passage") 11b is the front panel, which will be described later. It is connected to the outlet 14 of 10B.

  The circulation fan 20 is a cross flow fan that is pivotally supported between the side walls of the circulation passage 11 so as to be rotatable, and is rotated by a rotational driving force of a fan motor (not shown).

  Further, a heat exchanger 30 to which high-temperature hot water is supplied from a water heater (not shown) through a hot water pipe is incorporated in the intake passage 11a, and covers the intake passage 11a side of the circulation fan 20.

  The heat exchanger 30 includes a heat radiating pipe 31 connected to the hot water pipe and a plurality of heat radiating fins 32 arranged side by side so as to intersect the heat radiating pipe 31. The heat of the hot water is released into the air from the surface.

  Further, a ventilation opening 11c connected to the unit connection port 101 is provided on the side wall of the intake passage 11a.

  On the other hand, a duct connection port 120 for connecting a ventilation duct (not shown) connected to the outdoors is provided on the side wall of the ventilation unit 12.

  Further, in the ventilation unit 12, air in the bathroom is taken into the ventilation unit 12 from the suction port 13 of the front panel 10B, which will be described later, through the ventilation opening 11c, and is outdoors from the duct connection port 120 through the ventilation duct. A ventilation fan 40 for discharging the air is accommodated.

  The front panel 10B is provided with a suction port 13 having a lattice-shaped intake grille 15 and a blower outlet 14 covered with a louver 140 for adjusting the wind direction.

  Further, an air filter 110 for removing floating matters such as dust and fungi in the air taken into the intake passage 11 a is attached to the lower surface side of the intake grill 15 and covers the entire intake port 13. .

  Further, a mist nozzle 50 is provided in the vicinity of the air outlet 14 of the front panel 10B to dissipate high-temperature hot water generated by a mist hot water heat exchanger (not shown) in the main body case 10A as a mist into the bathroom.

  The intake grill 15 is composed of a plurality of grill bars 150 which are horizontally mounted in the same direction between the side walls of the intake passage 11a, and a gap (hereinafter referred to as “slit”) 130 between the adjacent grill bars 150. The air in the bathroom passes through the intake passage 11a.

  As shown in FIG. 2, the grill bar 150 is formed in a groove shape having a substantially V-shaped cross section in which the right edge 15 a and the left edge 15 b stand up obliquely upward.

  Further, the right side edge 15a protrudes upward from the left side edge 15b of the adjacent adjacent grill bar 150, and the end surfaces of the right side edge 15a and the left side edge 15b overlap each other when viewed from above. Yes.

  That is, the adjacent grill bars 150 are arranged with a gap of a predetermined width in the vertical direction and without gaps when viewed from above. Accordingly, drain generated in the circulation passage 11 described later is received on the upper surface of the grill bar 150 without passing through the slit 130, while air in the bathroom passes through the slit 130 and reaches the circulation passage 11.

  The “right edge 15a” and the “left edge 15b” correspond to “side edges” as the invention-specifying matters of claim 2 described above.

  Further, as shown in FIG. 3, the upper surface of the bottom portion 15c of the grill bar 150 is inclined downward toward the concave portion 102 formed on the upper surface of the front panel 10B.

  The concave portion 102 is formed on substantially the entire area surrounded by the peripheral wall surrounding the intake grill 15 and the air outlet 14 and the outer peripheral wall of the front panel 10B.

  In this case, for example, when the start of ventilation operation is instructed after bathing, the ventilation fan 40 rotates, and high-temperature air containing a lot of moisture filling the bathroom flows into the intake passage 11a from the slit 130. . And it is taken in into the ventilation unit 12 through the opening part 11c for ventilation of the intake passage 11a, and is further discharged | emitted outside through the ventilation duct which is not shown in figure from the duct connection port 120. FIG.

  At that time, part of the air taken into the intake passage 11a passes through the surfaces of the heat radiating pipes 31 and the heat radiating fins 32 of the heat exchanger 30, but the water temperature in the heat radiating pipes 31 is low as in the cold season. When the temperature is extremely low, condensation occurs on the surfaces of the heat radiating pipe 31 and the heat radiating fins 32 due to the temperature difference between the surface air and the air, and the dew drops toward the suction port 13.

  When the start of the mist operation is instructed, the louver 140 is opened and the circulation fan 20 is rotated. Further, hot water is sent from a hot water heat exchanger (not shown) to the mist nozzle 50, and the bathroom Disperse the mist inside.

  At that time, a part of the mist diffused in the bathroom is sucked into the intake passage 11a from the slit 130 and adheres to the surface of the heat radiating pipe 31 and the heat radiating fin 32 and the inner wall of the circulation passage 11, and the air inlet 13 Drip to the side.

  However, since the suction port 13 is entirely covered by the grill bars 150 arranged without gaps when viewed from above, the dew generated on the surface of the heat exchanger 30 and water adhering to the inner wall of the circulation passage 11, Furthermore, all drainage such as minute leakage water from the missing portion of the heat radiating pipe 31 drops on the right edge 15a, the left edge 15b, and the bottom 15c of the grill bar 150.

  The drain received at the right edge 15a and the left edge 15b is collected on the upper surface of the bottom portion 15c along the inclined surfaces, and further collected on the concave portion 102 of the front panel 10B along the upper surface of the bottom portion 15c. As a result, even if a large amount of drain has dropped from the inside of the circulation passage 11 or the surface of the heat exchanger 30 to the suction port 13 side, the drain does not overflow from the grill bar 15, so The inconvenience of leaking out can be avoided. In addition, the air filter 110 can be prevented from getting wet.

  The drain collected in the recess 102 spreads thinly on the recess 102 formed in a relatively wide area on the upper surface of the front panel 10B, and natural evaporation is promoted.

  On the other hand, the air in the bathroom is guided from the slit 130 through the vertical gap formed between the adjacent grill bars 150 into the intake passage 11a and directly without being detoured in the intake passage 11a. To the heat exchanger 30 and pass through its entire surface. As a result, since the heat dissipation capability of the heat exchanger 30 is effectively exhibited, the thermal efficiency of the air conditioner 1 is improved.

  Further, the air sucked into the intake passage 11a from the slit 130 is guided into the intake passage 11a in a laminar flow state along each right edge 15a rising linearly upward to the right. Thereby, since the said air spreads over the whole surface of the heat exchanger 30, and since the heat dissipation capability of the heat exchanger 30 is exhibited more effectively as a result, the thermal efficiency of the air conditioner 1 improves further.

[Others]
In the above embodiment, the end faces of the right edge 15a and the left edge 15b of the adjacent grill bars 150 are configured to overlap each other when viewed from above, but the right edge 15a approaches the end face of the left edge 15b. You may comprise so that it may take out.

  The intake grill 150 has a configuration in which grill bars 150 having a substantially V-shaped cross section are arranged side by side in the same direction, but in a state where adjacent grill bars 150 have a gap of a predetermined width in the vertical direction. As shown in FIG. 4, the grill bars 150 having a substantially J-shaped cross section may be arranged in parallel in the same direction as long as they are arranged without gaps when viewed from above. As described above, a configuration in which grill bars 150 having a substantially U-shaped cross section are arranged in two rows in the same direction may be employed.

  In addition, it is preferable that the grill crosspiece 150 and the recessed part 102 in the said embodiment are formed with the material with the high effect which suppresses propagation of fungi, such as stainless steel and an antibacterial resin.

  Further, as shown in FIG. 6, a drain hole 16 may be provided on the lowest surface of the concave portion 102 so that the drain in the concave portion 102 can be appropriately discharged when maintenance is performed by the user. As shown in FIG. 8, a drainage passage 17 extending from the lowest surface of the recess 102 to the side wall W of the bathroom may be provided, and the drain may be always drained from the drainage passage 17. A drainage pump 18 may be provided on the lowest surface, and the drainage may be discharged outside the bathroom by the drainage pump 18.

  Alternatively, as shown in FIG. 9, a diversion passage 19 extending from the exhaust passage 11b to the vicinity of the upper surface of the concave portion 102 is provided, and during the heating operation, the warm air is guided from the diversion passage 19 to the concave portion 102 to force the drain. It may be configured to evaporate.

  In these cases, even when a large amount of drain is collected in the recess 102, it is possible to positively remove the drain from the recess 102. Therefore, propagation of mold, germs, etc. on the surface of the recess 102 Can be more effectively suppressed.

  Although the air conditioner 1 in the above embodiment has been described as a ceiling-buried bathroom heating dryer, it may be a wall-mounted bathroom heating dryer that fixes the main body case 10A to the ceiling or side wall of the bathroom.

1 is a schematic vertical sectional view of an air conditioner 1 according to an embodiment of the present invention. The longitudinal cross-sectional view of the suction inlet 13 periphery of the air conditioner 1 which concerns on embodiment of this invention. XX sectional view shown in Drawing 1 of air harmony machine 1 concerning an embodiment of the invention The figure which shows the grill crosspiece 150 of the air conditioner 1 which concerns on other embodiment of this invention. The figure which shows the grill crosspiece 150 of the air conditioner 1 which concerns on other embodiment of this invention. The figure which shows the drain hole 16 of the air conditioner 1 which concerns on other embodiment of this invention. The surface which shows the drainage channel | path 17 of the air conditioner 1 which concerns on other embodiment of this invention. The surface which shows the drainage pump 18 of the air conditioner 1 which concerns on other embodiment of this invention. The figure which shows the shunt path 19 of the air conditioner 1 which concerns on other embodiment of this invention. Schematic diagram of longitudinal section of a conventional air conditioner 6

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Air conditioner 11 ... Circulation channel | path 13 ... Suction inlet 14 ... Outlet 15 ... Intake grill 150 ... Grill crosspiece 15a, 15b ... Side edge 20 ... Circulation Fan 30 ... heat exchanger

Claims (3)

A circulation passage that is connected to the air outlet from the suction port established on the lower surface of the casing, a circulation fan that circulates indoor air through the circulation passage, and a part that is incorporated above the suction port in the circulation passage and is taken into the circulation passage In an air conditioner including a heat exchanger that performs heat exchange with the air and a water receiving portion that receives drain dripping from the circulation passage to the suction port side,
The suction port is provided with an intake grille in which groove-like grill bars that open upward are arranged in a grid,
The adjacent grill bars are arranged without a gap in a top view with a gap in the vertical direction,
The air conditioner, wherein the intake grill is the water receiving portion. In the air conditioner according to claim 1,
The grill bar is an air conditioner formed with a substantially V-shaped cross section with both side edges rising obliquely upward. In the air conditioner according to claim 1 or 2,
On the outer peripheral side of the intake grill, a recess capable of storing drain is formed,
An air conditioner, wherein the bottom of the upper surface of the grill bar is inclined downward toward the recess.

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