JP4906828B2 - Air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air conditioner having small ventilation resistance within an air course, reducing noise and input, and achieving excellent dew formation resistance of a blowout port and a drain pan sidewall etc. <P>SOLUTION: The air conditioner includes: a suction port 2 provided on the lower face of a device body 1; an air blower 3 arranged on the downstream side of the suction port 2; a heat exchanger 5 installed within the air course 4 formed on the downstream side of the air blower 3; a drain pan 6 installed on the lower side of the heat exchanger 5; the blowout port 10 including the sidewall 7 of the drain pan 6 and provided on the downstream side of the heat exchanger 5; and a deflection plate 11 installed between the heat exchanger 5 and the blowout port 10. When the deflection plate 11 is divided into two portions by a vertical line 9 extended upwardly from an upper edge 8 of the sidewall 7 of the drain pan 6, the portion on the upstream side is formed to have an approximately horizontal shape and the portion on the downstream side to have an approximately arcuate shape. The deflection plate 11 is installed on the lower side from a half of the height from the upper edge 8 of the sidewall 7 of the drain pan 6 to an upper inner wall 12 of the device body 1. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to an air conditioner having an air inlet and an air outlet communicated with each other via a blower and an air passage in which a heat exchanger is accommodated, and more specifically, a deflection installed in an air passage. It is about a board.

  A conventional air conditioner indoor unit has an air suction port on the lower surface of the housing. The air is sucked from the air suction port by a blower, and heat is exchanged between the refrigerant and room air by a heat exchanger installed in the air passage. The secondary air is bent by a wind guide plate that is provided in the vicinity of the drain pan provided at the lower part of the heat exchanger and the water receiving portion is formed in a concave curve, and is rectified by the wind guide plate. In some cases, the air is blown into the room from an air outlet provided on the lower surface of the housing (see, for example, Patent Document 1).

Japanese Patent Laying-Open No. 2007-247995 (page 4, FIG. 3)

  Since the ceiling-embedded air conditioner disclosed in Patent Document 1 has an air outlet on the lower surface of the housing, the secondary air that has passed through the heat exchanger is bent by the air guide plate in the housing. For this reason, depending on the shape and installation position of the air guide plate, the air guide plate becomes a draft resistance, the pressure loss in the air passage increases, and noise and input power increase. there were.

  In addition, in the ceiling-embedded air conditioner, secondary air is blown out from a substantially rectangular air outlet that is long in the left-right direction (width direction) provided on the lower surface, but at both ends in the left-right direction of the outlet The wind speed is slower than the central part due to the influence of the side wall of the casing, and it is easy to entrain high-temperature indoor air during the cooling operation. Furthermore, when the secondary air is bent in the air passage, if the dead water area is generated by peeling off at the air guide plate, the air outlet or the wind direction plate, condensation is formed on the air outlet or the air direction plate by the above-mentioned high temperature indoor air. There was also a problem that occurred.

  The present invention has been made to solve the above-described problems, and provides an air conditioner that has low ventilation resistance in an air passage, low noise, low input, and excellent condensation resistance such as an air outlet and a drain pan side wall. It is for the purpose.

An air conditioner according to the present invention includes a suction port provided on a lower surface on the rear side of the apparatus main body, a blower installed on the downstream side of the suction port, and a wind formed on the downstream side and the front side of the blower. A heat exchanger installed in the channel, a drain pan installed in the lower part of the heat exchanger, and a blowout opening on the lower surface including the side wall of the drain pan, provided on the downstream side and the front side of the heat exchanger And a deflection plate installed between the heat exchanger and the outlet,
The drain pan side wall is inclined downwardly from its upper end to the inner wall on the front side of the apparatus main body, in a substantially straight line at an angle α with respect to a vertical line passing through the upper end of the drain pan side wall. Forming,
When the deflecting plate is disposed over the side wall of the drain pan across the side wall and divided into two by a vertical line extending upward from the upper end of the side wall of the drain pan, the upstream side thereof has a substantially horizontal shape, The downstream side is formed in a substantially circular arc shape, and is installed below a half of the height from the upper end of the drain pan side wall to the upper inner wall of the apparatus body,
The angle β formed by the downstream side of the deflecting plate and the vertical line passing through the upper end of the drain pan side wall is formed to be substantially equal to the angle α formed by the side wall of the drain pan and the vertical line.

  Since the air conditioner according to the present invention is configured as described above, the ventilation resistance of the air passage in the apparatus main body is reduced, noise and input power can be reduced, and condensation resistance such as an outlet and a drain pan side wall is provided. You can get an excellent air conditioner. Further, since it is not necessary to perform condensation prevention treatment on the air outlet and the wind direction plate, not only can the cost be reduced, but also the separation at the time of recycling can be simplified.

[Embodiment 1]
FIG. 1 is an explanatory cross-sectional view of an air conditioner according to Embodiment 1 of the present invention. In the following description, a ceiling-embedded air conditioner is shown as the air conditioner.
A suction port 2 for introducing room air to the lower surface of the rear side of the box-shaped device body 1 of the air conditioner (in the following description, the right side of the drawing is referred to as the rear side and the left side is referred to as the front side). Is provided. In the following description, the indoor air introduced from the suction port 2 is referred to as primary air.

  The suction port 2 is usually provided with a filter for removing dust and the like contained in the introduced air, and a blower 3 such as a sirocco fan driven by an electric motor is installed downstream of the suction port 2. Has been. And the heat exchanger 5 is arrange | positioned in the air path 4 formed in the downstream of the air blower 3, The primary air suck | inhaled from the suction inlet 2 by this heat exchanger 5 is heat-exchanged. In the following description, the air that has passed through the heat exchanger 5 is referred to as secondary air. A drain pan 6 is provided below the heat exchanger 5 and receives water dropped from the heat exchanger 5.

  Reference numeral 10 denotes a secondary air outlet provided at the same height as the suction port 2 on the lower surface of the front side of the apparatus main body 1. A front side wall 7 (hereinafter referred to as a drain pan side wall) of the drain pan 6 is an outlet 10. Part of. The drain pan side wall 7 is substantially linearly inclined from the substantially arcuate upper end 8 to the outlet 10 toward the front side, and the angle formed with the vertical line 9 passing through the upper end 8 is α.

  Above the upper end portion 8 of the drain pan side wall 7, a deflecting plate 11 for deflecting secondary air flowing through the air passage 4 is provided, and this deflecting plate 11 extends upward from the upper end portion 8 of the drain pan side wall 7. When the vertical line 9 is divided into two, as shown in FIG. 2, the rear side 11a (hereinafter referred to as the upstream side) has a substantially horizontal shape, and the front side 11b (hereinafter referred to as the downstream side) has a substantially circular arc shape. The angle β formed by 11b with the vertical line 9 is formed substantially equal to the angle α formed by the drain pan side wall 7 with the vertical line 9. And the wind direction board 11 is installed in the position below the half of the height of the air path 4 from the upper end part of the drain pan side wall 7 to the upper surface inner wall 12 of the apparatus main body 1. FIG.

  In the air conditioner configured as described above, when the operation switch is turned on, the blower 3 is driven and the room air (primary air) is sucked from the suction port 2. The primary air flowing in from the suction port 2 is sent to the air passage 4 and is heat-exchanged with the refrigerant in the heat exchanger 5, and the flow direction of the secondary air that has passed through the heat exchanger 5 is deflected by the deflecting plate 11 and blown out. It is guided to the mouth 10 and blown into the room.

  In the present embodiment, since the upstream side 11a of the deflection plate 11 has a substantially horizontal shape, as shown in FIG. 3, the secondary air flows into the edge of the upstream side 11a at an incident angle of about 0 °. Therefore, the air flow does not peel off. Since the downstream side 11b has a substantially arcuate curve, the air flow that flows in without being separated at the edge of the upstream side 11a is smoothly deflected toward the outlet 10.

  Further, since the angle β formed with the vertical line 9 on the downstream side 11 b is substantially equal to the angle α formed with the vertical line 9 on the drain pan side wall 7, the air flow that has passed through the deflecting plate 11 flows out at an angle along the drain pan side wall 7. To do. Since the drain pan side wall 7 is formed in a substantially straight line inclined from the upper end 8 to the outlet 10 toward the front side, the air flow that has passed through the deflection plate 11 is blown out along the drain pan side wall 7 without being disturbed. Guided to mouth 10.

  Furthermore, since the deflection plate 11 is installed below one half of the height of the air passage 4 from the upper end portion 8 of the drain pan side wall 7 to the upper surface inner wall 12 of the apparatus main body 1, there is no deflection plate 11. As shown in FIG. 4, the distribution of the air passage 4 in the left-right direction can flow uniformly to the outlet 10 without the secondary air being biased toward the front side inner wall 13 of the apparatus main body 1.

[Comparative example]
Next, a comparative example of the air conditioner according to the present embodiment will be described.
First, when the deflecting plate is not provided, as shown in FIG. 4, when the secondary air exiting from the heat exchanger 105 bends 90 ° toward the outlet 110, the upper end 108 of the drain pan side wall 107. Then, since it cannot be bent suddenly, it is biased toward the front inner wall 113 side of the apparatus main body 101.

  As a result, there is a problem that ventilation resistance increases at the drain pan side wall 107 and the outlet 110, and noise and input power increase. Further, since a dead water area is formed on the drain pan side wall 107 side of the outlet 110, there is a problem in that dew condensation occurs due to entrainment of indoor air having a high temperature during the cooling operation.

  Further, even when a deflection plate is provided in the air passage, depending on the shape and installation position, the air flow is separated at the front edge of the deflection plate 111 as shown in FIG. There is a problem that noise and input power increase as the size increases. In addition, a dead water area is also formed on the side of the drain pan side wall 107 at the outlet 110, and the ventilation resistance is further increased, and noise and input power are further increased.

  Furthermore, there is a problem that indoor air having a high temperature is easily trapped during cooling operation, and condensation is generated at the outlet 110. In order to prevent this dew condensation, hair must be planted or a heat insulating material must be attached to the outlet 110, which not only increases the cost, but also makes it difficult to separate at the time of recycling.

In the present embodiment, since the air conditioner is provided with the deflecting plate 11 as described above, the air flow is not separated at the upstream edge of the deflecting plate 11, the drain pan side wall 7, and the outlet 10. Ventilation resistance in the air passage 4 is reduced, and noise and input power can be reduced.
Moreover, since a dead water area does not arise in the blower outlet 10, the indoor air with high temperature is not caught, and the dew condensation tolerance of the blower outlet 10 at the time of air_conditionaing | cooling operation improves. For this reason, since it is not necessary to perform dew condensation prevention processing, such as flocking and sticking of a heat insulating material, cost can be reduced and separation at the time of recycling can be simplified.

[Embodiment 2]
6 is a cross-sectional explanatory view of an air conditioner according to Embodiment 2 of the present invention, and FIG. 7 is a line showing the relationship between the vertical position of the deflection plate of FIG. 6, the air volume distribution above and below the deflection plate, and the ventilation resistance. FIG. The same parts as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

In the present embodiment, the distance from the upper end 8 of the drain pan side wall 7 to the upper inner wall 12 of the apparatus body 1 is H ₁ + H _2, and the distance from the upper end 8 of the drain pan side wall 7 to the deflection plate 11 is H ₂ . In this case, the position of the deflection plate 11 is set in a range of 0.2 <H ₂ / (H ₁ + H ₂ ) <0.3.

  Thus, by setting the position of the deflecting plate 11, as shown in FIG. 7, the upper and lower air volume distributions of the deflecting plate 11 in this region are almost 50% each, and the curvature is the largest and the secondary air is peeled off. The air flow in the vicinity of the drain pan side wall 7 can be secured easily, thereby suppressing the separation of the air flow in the drain pan side wall 7 and the outlet 10 and reducing the ventilation resistance in the air passage 4 to reduce noise and input power. Can be reduced.

  Moreover, since there is no dead water area in the blower outlet 10, the dew-proof strength of the blower outlet 10 at the time of air_conditionaing | cooling operation can be improved, without involving high temperature indoor air. Furthermore, since it is not necessary to perform dew condensation prevention treatment such as flocking or sticking of a heat insulating material, the cost can be reduced and the separation at the time of recycling can be simplified.

[Embodiment 3]
FIG. 8 is a side view of the deflector plate of the air conditioner according to Embodiment 3 of the present invention, and FIG. is there.
In the present embodiment, the outlet angle (angle with respect to the vertical line 9a) γ of the downstream side 11b of the deflection plate 11 is set to α <γ <α + 2 ° (where α is the angle of the drain pan side wall 7 with respect to the vertical line 9). 1).

  In the present embodiment, since the deflecting plate 11 is configured as described above, the air flow that has passed through the deflecting plate 11 is guided to the outlet 10 without colliding with the drain pan side wall 7. For this reason, since no dead water area is generated in the air outlet 10 and the condensation resistance of the air outlet 10 during cooling operation can be improved, there is no need to perform condensation prevention treatment such as flocking or sticking of a heat insulating material. Thereby, cost can be reduced and separation at the time of recycling can be simplified.

  Further, since the downstream side 11b of the deflecting plate 11 has a substantially arc shape, the secondary air flows along the deflecting plate 11 without being separated on the downstream side 11b. For this reason, as shown in FIG. 9, in the said area | region, the ventilation resistance in the air path 4 reduces, and a noise and input electric power can be reduced.

[Embodiment 4]
FIG. 10 is a cross-sectional explanatory view of an air conditioner according to Embodiment 4 of the present invention. The same parts as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.
In the present embodiment, when the deflection plate 11 is divided into two by a vertical line 9 extending upward from the upper end portion 8 of the drain pan side wall 7, the length x when the downstream side 11b is projected onto the horizontal plane, that is, the deflection plate. The distance x between the vertical line 9 that divides 11 into two and the distal end portion on the downstream side 11b of the deflection plate 11 is set so that the distal end portion on the downstream side 11b of the deflection plate 11 and the distal end portion are horizontally opposed to the distal end portion. When the distance from the front side inner wall 13 of the main body 1 is y, the range is set to 0.2 <x / (x + y) <0.4.

  FIG. 11 is a diagram showing changes in ventilation resistance in the air passage 4 when the above x / (x + y) is changed. As shown in the figure, in the region where x is 0.2 <x / (x + y) <0.4, it is understood that the ventilation resistance is lower than that in other regions, and noise and input power can be reduced.

[Embodiment 5]
FIG. 12 is a perspective view of the main parts of the drain pan and the deflection plate of the air conditioner according to Embodiment 5 of the present invention. The same parts as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.
In the present embodiment, the deflecting plate 11 is arranged at a predetermined position, and at least three ends of the drain pan 6 and the three points at the center are fixed via a support plate 14 by bonding or screwing.
According to the present embodiment, the deflecting plate 11 is not displaced when the air conditioner is transported or installed.

[Embodiment 6]
FIG. 13 is a cross-sectional explanatory view of a main part of a deflection plate of an air conditioner according to Embodiment 6 of the present invention.
The deflection plate 11 according to the present embodiment is provided with a plurality of grooves 15 having a rectangular cross section, a triangular shape or the like at predetermined intervals in the longitudinal direction from the upstream side to the downstream side of the upper surface. In addition, the cross-sectional shape of the groove 15 is not limited to the illustrated shape, and may be, for example, a trapezoidal shape or an arc shape.

  In the present embodiment, since the deflecting plate 11 is configured as described above, the secondary air flows along the groove 15 when deflected by the deflecting plate 11 and therefore peels off on the outer peripheral side (upper surface side) of the deflecting plate 11. It flows along the deflection plate 11. For this reason, the ventilation resistance in the air path 4 falls, and a noise and input electric power can be reduced.

[Embodiment 7]
FIG. 14 is an explanatory cross-sectional view of an air conditioner according to Embodiment 7 of the present invention. The same parts as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.
In the air conditioner according to the first embodiment, the present embodiment is provided with a wind direction plate 16 that changes the blowing direction of the secondary air at the outlet 10, and this wind direction plate 16 is connected to the apparatus main body 1. It is fixed so that it can move. The upstream end portion of the wind direction plate 16 is positioned closer to the front inner wall 13 side of the apparatus body 1 than the vertical line passing through the downstream end portion of the deflection plate 11 in any direction. It is supposed to be. That is, even when the upper end portion of the wind direction plate 16 is closest to the deflection plate 11, a gap g is formed between them.

According to the present embodiment, the secondary air blown out from the blowout port 10 can be blown out in an arbitrary direction such as a horizontal direction or a downward direction, so that convenience for the user can be improved.
In addition, no matter which direction the wind direction plate 16 is directed, a gap is formed between the vertical line passing through the lower end portion of the deflection plate 11 and the upper end portion of the wind direction plate 16. When the secondary air passing through the side flows between the drain pan side wall 7 and the wind direction plate 16, it is not interfered by the upper end of the wind direction plate 16, so that the wind path resistance in the wind path 4 is reduced and noise is reduced. , Input power can be reduced.

Although the embodiments of the present invention have been described above, each of these embodiments may be implemented independently or in combination as appropriate.
Moreover, although the case where this invention was implemented to the air conditioner of illustration was shown in said description, it is not limited to this, This invention can be implemented also to the air conditioner of another structure.

It is a section explanatory view of the air harmony machine concerning Embodiment 1 of the present invention. It is a side view of the deflection | deviation plate of FIG. It is explanatory drawing of the flow state of the secondary air from the heat exchanger of FIG. 1 to a blower outlet. It is explanatory drawing of the flow state of secondary air when there is no deflection plate which is a comparative example of FIG. It is explanatory drawing of the flow state of secondary air in case the shape and position of a deflection | deviation plate differ from FIG. It is sectional explanatory drawing of the air conditioner which concerns on Embodiment 2 of this invention. FIG. 7 is a diagram showing the relationship between the vertical position of the deflection plate of FIG. 6, the air volume distribution above and below the deflection plate, and the ventilation resistance. It is a side view of the deflection plate of the air conditioner concerning Embodiment 3 of this invention. It is a diagram which shows the ventilation resistance in an air path at the time of changing the exit angle of the deflection | deviation board of FIG. It is sectional explanatory drawing of the air conditioner which concerns on Embodiment 4 of this invention. It is a diagram which shows the ventilation resistance in an air path at the time of changing x / (x + y) of FIG. It is a perspective view of the principal part of the drain pan and deflection plate of an air conditioner concerning Embodiment 5 of the present invention. It is sectional explanatory drawing of the principal part of the deflection plate of the air conditioner which concerns on Embodiment 6 of this invention. It is sectional explanatory drawing of the air conditioner which concerns on Embodiment 7 of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Apparatus main body, 2 suction inlet, 3 air blower, 4 air path, 5 heat exchanger, 6 drain pan, 7 drain pan side wall, 8 upper end part of drain pan side wall, 10 outlet, 11 deflecting plate, 15 groove, 16 wind direction plate.

Claims (8)

A suction port provided on the lower surface on the rear side of the apparatus main body, a blower installed on the downstream side of the suction port, and a heat exchanger installed in an air passage formed on the downstream side and the front side of the blower A drain pan installed at a lower portion of the heat exchanger, a blowout port that includes a side wall of the drain pan, is provided on the downstream side and the front side of the heat exchanger, and opens on a lower surface, and the heat exchanger and the blowout A deflection plate installed between the mouth and
The drain pan side wall is inclined downwardly from its upper end to the inner wall on the front side of the apparatus main body, in a substantially straight line at an angle α with respect to a vertical line passing through the upper end of the drain pan side wall. Forming,
When the deflecting plate is disposed over the side wall of the drain pan across the side wall and divided into two by a vertical line extending upward from the upper end of the side wall of the drain pan, the upstream side thereof has a substantially horizontal shape, The downstream side is formed in a substantially circular arc shape, and is installed below a half of the height from the upper end of the drain pan side wall to the upper inner wall of the apparatus body,
An air conditioner characterized in that an angle β formed by a downstream side of the deflecting plate with a vertical line passing through an upper end portion of a side wall of the drain pan is substantially equal to an angle α formed by a side wall of the drain pan with the vertical line. When the height from the upper end portion of the drain pan side wall to the upper inner wall of the apparatus body is H ₁ + H ₂ and the height from the upper end portion of the drain pan side wall to the deflection plate is H ₂ , 2. The air conditioner according to claim 1, wherein the air conditioner is installed in a range of 2 <H ₂ / (H ₁ + H ₂ ) <0.3. The deflector, when the outlet angle between the downstream side tip and vertical line and gamma, with respect to the angle α of the side wall of the drain pan makes with the vertical line passing through the upper portion of the side wall, the outlet angle gamma The air conditioner according to claim 1, wherein the air conditioner is installed in a range of α <γ <α + 2 °.   When x is a length obtained by projecting the downstream side of the deflecting plate onto a horizontal plane, and y is a distance between the lower end of the deflecting plate and the inner wall on the front side of the apparatus body facing the lower end, x is 0. The air conditioner according to any one of claims 1 to 3, wherein the air conditioner is set in a range of 0.2 <x / (x + y) <0.4.   The air conditioner according to any one of claims 1 to 4, wherein a plurality of grooves are provided in the longitudinal direction from the upstream side to the downstream side of the upper surface of the deflection plate.   The air conditioner according to any one of claims 1 to 5, wherein the deflecting plate is disposed at a predetermined position and fixed to the drain pan.   The air conditioner according to any one of claims 1 to 6, wherein a wind direction plate is rotatably provided at the outlet.   The air conditioner according to claim 7, wherein an upstream end portion of the wind direction plate is disposed closer to a front side inner wall side of the apparatus body than a downstream end portion of the deflection plate.

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