JP2008122019A - Air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air conditioner improving flowability of air passing through a throating plate. <P>SOLUTION: The air conditioner 1 supplying air heat-exchanged by an indoor heat exchanger 6, into a room comprises a drain pan 12 and the throating plate 27. The drain pan 12 recovers dew condensate produced on the surface of the indoor heat exchanger 6. The throating plate 27 is located upstream of air passing through the indoor heat exchanger 6 and receiving and leading the dew condensate dripping from the indoor heat exchanger 6, to the drain pan 12. The inclination angle of the drain plate 27 to the flow direction of air is variable. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an air conditioner, and more particularly to an air conditioner in which a dew condensation water drainage mechanism is interposed between an indoor heat exchanger and an air suction port.

Conventionally, in an air conditioner, by placing a drain pan at the lower end of an indoor heat exchanger installed in an inclined state, the dew condensation water generated on the indoor heat exchanger is lowered along the indoor heat exchanger. It is configured to fall into the drain pan. In addition, a plurality of draining plates are arranged in a stepped manner below the indoor heat exchanger so that the condensed water can be reliably recovered to the drain pan even if it drops from the indoor heat exchanger until it reaches the drain pan. Thus, it is considered that the condensed water that has dripped gradually descends from the upper drainage plate to the lower drainage plate and finally reaches the drain pan (see, for example, Patent Document 1).
JP-A-8-121823

  However, since the above-described draining plate is located between the indoor heat exchanger and the air suction port, it tends to be resistant to air flowing from the air suction port. In particular, in an air conditioner of a type that selectively switches the air inlet according to the installation location of the air conditioner, the draining plate may be substantially perpendicular to the air flow, and the air flowability is reduced. There was a possibility of lowering.

  The subject of this invention is providing the air conditioning apparatus which improved the circulation | circulation of the air which passes a draining board.

  An air conditioner according to a first aspect of the present invention is an air conditioner that supplies air heat-exchanged by an indoor heat exchanger to a room, and includes a drain pan and a draining plate. The drain pan collects dew condensation water generated on the surface of the indoor heat exchanger. The draining plate is located on the upstream side of the air passing through the indoor heat exchanger, receives the condensed water dripping from the indoor heat exchanger, and guides it to the drain pan. The inclination angle of the draining plate with respect to the air flow direction is variable.

  In this air conditioner, the angle of the draining plate is changed so that the degree of deflection of the air flow by the draining plate is reduced. For this reason, air circulation is improved and the air resistance is decreased. As a result, the air flow rate is increased and the cooling performance is improved.

  An air conditioner according to a second aspect of the present invention is an air conditioner that supplies air heat-exchanged by an indoor heat exchanger into a room, and includes a drain pan and a plurality of draining plates. The drain pan collects dew condensation water generated on the surface of the indoor heat exchanger. The draining plate is located on the upstream side of the air passing through the indoor heat exchanger, receives the condensed water dripping from the indoor heat exchanger, and guides it to the drain pan. The relative position of the draining plates is variable.

  In this air conditioner, the interval between the draining plates is increased by changing the position of the draining plates. For this reason, air circulation is improved and the air resistance is decreased. As a result, the air flow rate is increased and the cooling performance is improved.

  An air conditioner according to a third aspect of the present invention is the air conditioner according to the first or second aspect of the present invention, wherein the draining plate has a water storage area for accumulating a predetermined amount of condensed water.

  In this air conditioner, even if the angle or position of the draining plate changes, the condensed water does not move to a place other than the draining plate. For this reason, since dew condensation water does not spill out, there is no adverse effect such as water splashing on peripheral devices.

  An air conditioner according to a fourth aspect of the present invention is the air conditioner according to the first or second aspect of the present invention, wherein the draining plate has a drainage means for guiding it downward without accumulating condensed water.

  In this air conditioner, condensed water does not stay on the upper surface of the draining plate, and it is difficult for sediment to accumulate on the upper surface of the draining plate. For this reason, the good drainage of condensed water is maintained for a long time.

  An air conditioner according to a fifth aspect of the present invention is the air conditioner according to the first or second aspect of the present invention, wherein the upper surface of the drainage plate is such that the condensed water dripping onto the upper surface of the drainage plate flows in the longitudinal direction of the drainage plate. Is installed in an inclined state.

  In this air conditioner, the condensed water dripped on the upper surface of the draining plate moves in the inclination direction of the upper surface of the draining plate and does not stay. For this reason, it is hard for sediment to accumulate on the upper surface of the draining plate, and good drainage of the condensed water is maintained.

  In the air conditioner according to the first aspect of the invention, the angle of the draining plate is changed so that the degree of deflection of the air flow by the draining plate is reduced, so that air circulation is improved and air resistance is reduced. As a result, the amount of blown air is increased and the cooling performance is improved.

  In the air conditioner according to the second aspect of the present invention, the distance between the draining plates is increased by changing the position of the draining plates, so that air circulation is improved and air resistance is reduced. As a result, the amount of blown air is increased and the cooling performance is improved.

  In the air conditioner according to the third aspect of the present invention, even if the angle or position of the draining plate changes, the condensed water does not move to a place other than the draining plate. For this reason, the condensed water does not spill out, and there is no adverse effect such as water splashing on peripheral devices.

  In the air conditioner according to the fourth aspect of the present invention, the condensed water does not stay on the upper surface of the draining plate, so that it is difficult for sediment to accumulate on the upper surface of the draining plate, and good drainage of the condensed water is maintained for a long time.

  In the air conditioner according to the fifth aspect of the present invention, the dew condensation water dripped on the top surface of the draining plate moves in the direction of inclination of the top surface of the draining plate and does not stay there. Good drainage is maintained.

[First Embodiment]
<Configuration of air conditioner>
(Refrigeration circuit)
FIG. 1 is a refrigeration circuit of an air conditioner. The air conditioner 1 has a refrigeration circuit in which a compressor 2, a four-way switching valve 3, an outdoor heat exchanger 4, an expansion valve 5, and an indoor heat exchanger 6 are connected by refrigerant pipes 7a and 7b. In FIG. 1, the solid and broken arrows indicate the flow direction of the refrigerant, and the air conditioner 1 can switch between the heating operation and the cooling operation by switching the flow direction of the refrigerant with the four-way switching valve 3. .

(Construction)
Fig.2 (a) is sectional drawing of the air side suction specification of the air conditioning apparatus which concerns on 1st Embodiment of this invention. In FIG. 2 (a), the casing 8 is a box-shaped container made of sheet metal, and is formed with a lateral air inlet 8a, a lower air inlet 8b, and an air outlet 8c. An air filter 9, an indoor heat exchanger 6, and a blower fan 11 are disposed in the internal space of the casing 8. The air filter 9 removes dust contained in the sucked air, and is located on the downstream side of the air flow of the lateral air suction port 8a. Further, the lower air suction port 8 b is closed by the closing plate 10. Therefore, while the blower fan 11 is operating, air flows into the casing 8 from the lateral air suction port 8a.

  The indoor heat exchanger 6 includes a plurality of fins (not shown), and the refrigerant that is sucked from the lateral air suction port 8a and passes between the fins and the refrigerant pipe (not shown) circulates. Is exchanged with the other, and air whose temperature is adjusted to a predetermined temperature is generated. Moreover, this indoor heat exchanger 6 is arrange | positioned so that it may incline below as it goes to the ventilation fan 11 side from the side air suction inlet 8a side. And the drain pan 12 for collect | recovering the dew condensation water which generate | occur | produces at the time of air_conditionaing | cooling operation is provided in the lower end part of the indoor heat exchanger 6. FIG.

  Further, mounting plates 6a and 6b are provided at the upper end and the lower end of the indoor heat exchanger 6, respectively, and these are joined to the upper surface and the lower surface in the casing 8, respectively. Supported by the casing 8.

  FIG. 2B is a cross-sectional view of the under-air suction specification of the air conditioner according to the first embodiment of the present invention. In FIG.2 (b), the air filter 9 is located in the air flow downstream of the lower air suction inlet 8b. Further, the lateral air suction port 8 a is closed by the closing plate 10. Therefore, while the blower fan 11 is operating, air flows into the casing 8 from the lower air suction port 8b.

(Condensation water recovery route)
2A and 2B, a draining member 25 for guiding the condensed water to the drain pan 12 is disposed below the indoor heat exchanger 6. The draining member 25 has a structure in which a plurality of (four in this embodiment) draining plates 27 are installed between a pair of support plates 26. Each draining plate 27 is disposed along the inclination direction of the indoor heat exchanger 6. A standing part 27a and a standing part 27b are formed at both ends of each draining plate 27. When water drops on each draining plate 27, the water sequentially falls from the standing part 27b to the lower draining plate 27. Are arranged to be.

  In addition, each draining plate 27 covers the entire lower side of the indoor heat exchanger 6, the dimension in the longitudinal direction of the draining plate 27, and the uppermost draining plate 27 to the lowermost draining plate 27. The dimension up to the vertical part 27b is set to a dimension that can surround the vertical lower portion of the indoor heat exchanger 6.

(Position and position of draining board)
Since the plane part of the draining plate 27 extends from the lateral air suction port 8a side to the blower fan 11 side, when the air is sucked from the side as shown in FIG. There is no inhibition. However, when air is sucked in from below as shown in FIG. 2B, the air flow hits the flat surface portion of the draining plate 27, so that the draining plate 27 becomes air resistance. Therefore, in this embodiment, in order to reduce the air resistance, the angle of the draining plate 27 can be changed.

  FIG. 3A is a cross-sectional view showing the posture of the draining plate in the horizontal air suction specification, and FIG. 3B is a cross-sectional view showing the posture of the draining plate in the under-air suction specification. 3 (a) and 3 (b), the draining plate 27 in the under-air suction specification has a smaller inclination angle downward than the draining plate 27 in the lateral air suction specification. As a result, the shortest distance B between the draining plates 27 becomes larger than the shortest distance A in the case of the horizontal air suction specification, and air easily passes.

  As for the air suction specification, either the horizontal air suction specification or the under air suction specification is selected according to the installation location of the air conditioner 1. For example, when the horizontal air suction specification is selected, the inclination angle of the draining plate 27 is manually adjusted so that the shortest distance between the draining plates 27 becomes the dimension A as shown in FIG. 2 (a) and 3 (a), during the cooling operation of the air conditioner 1, the air introduced into the casing 8 from the lateral air suction port 8a is purified by the air filter 9, and then the draining plates 27 are connected to each other. It flows through the space between and flows toward the indoor heat exchanger 6. At this time, the air is cooled by exchanging heat with the refrigerant evaporating in the indoor heat exchanger 6 and supplied to the indoor side as cold air. The condensed water generated in the indoor heat exchanger 6 during this cooling operation reaches the lower end of the indoor heat exchanger 6 and is then discharged to the drain pan 12. Further, when the condensed water is dripped before reaching the lower end portion of the indoor heat exchanger 6, the dripped water is received by the draining plate 27, and flows along each draining plate 27 to be the lowest draining plate 27. To the drain pan 12.

  On the other hand, when the under air suction specification is selected, the inclination angle of the draining plate 27 is manually adjusted so that the shortest distance between the draining plates 27 becomes B larger than A as shown in FIG. The In the under-air suction specification, the air flow is deflected by the flat portion of the draining plate 27, so that the air resistance is increased as compared with the horizontal air suction specification. Therefore, the shortest distance between the draining plates 27 is made larger than the horizontal air suction specification. As a result, the air flow is easily distributed.

  The draining plate 27 is held in the long hole 26a of the support plate 26 by an adjusting screw 26b. The draining plate 27 can be set to a predetermined angle by rotating the adjusting screw 26b. Further, the draining plate 27 can also be translated in the vertical direction along the long hole 26 a of the support plate 26. In order to move the draining plate 27 in parallel, the adjustment screw 26b is loosened, the draining plate 27 is manually moved to a predetermined position, and the adjustment screw 26b is tightened again.

  FIG. 4 is a cross-sectional view showing the position of the draining plate in the under-air suction specification. In FIG. 2B and FIG. 4, the shortest distance between the draining plates 27 becomes longer from lower to higher. In the case of the under air suction specification, the shortest distance between the draining plates 27 on the side far from the lower air suction port 8b is lengthened so that the air flows easily, so that the air flow is generated in the draining plate 27 on the side closer to the lower air suction port 8b. Care is taken not to concentrate. Accordingly, when it is determined that the adjustment of the inclination angle of the draining plate 27 is insufficient when the under-air suction specification is selected, the air draining plate 27 is translated in the vertical direction to further improve the air circulation. Can be made.

  Further, the posture of the draining plate 27 is generally tilted forward so that the condensed water is likely to fall. However, in order to further improve the flowability of the airflow, the upright portion 27b of the draining plate 27 may be inclined until it exceeds the horizontal position. FIG. 5 is a cross-sectional view showing one posture of the draining plate in the under-air suction specification. In FIG. 5, among the end portions of the draining plate 27, the end portion on the upright portion 27b side is inclined so as to be higher than the horizontal position. As a result, the shortest distance F between the draining plates 27 is maximized, and air circulation is further improved. The condensed water that has been dripped is temporarily stored in the water storage area 27c on the draining plate 27. When a predetermined amount of water has accumulated, it drops from the standing part 27b to the lower draining plate 27, so that the dew condensation occurs outside the water storage area 27c. Water does not spill out.

<Features of First Embodiment>
(1)
In the air conditioner 1, the draining plate 27 is located on the upstream side of the air passing through the indoor heat exchanger 6, receives condensed water dripping from the indoor heat exchanger 6, and guides it to the drain pan 12. Further, the inclination angle of the draining plate 27 with respect to the air flow direction is variable, and the inclination angle of the draining plate 27 is changed so that the degree of deflection of the air flow by the draining plate 27 becomes small. For this reason, air circulation is improved and the air resistance is decreased. As a result, the air flow rate is increased and the cooling performance is improved.

(2)
In the air conditioner 1, the relative position between the draining plates 27 is variable, and the interval between the draining plates 27 is increased by changing the position of the draining plate 27. For this reason, air circulation is improved and the air resistance is decreased. As a result, the air flow rate is increased and the cooling performance is improved.

(3)
In the air conditioner 1, even if the angle or position of the draining plate 27 changes, the dew condensation water does not move to a place other than the water storage area 27c, so there is no adverse effect such as water splashing on peripheral devices.

[Second Embodiment]
Here, a second embodiment in which drainage means is provided on the draining plate to positively drain the condensed water will be described. FIG. 6: is sectional drawing which shows the shape and attitude | position of the draining board in the under air suction specification of the air conditioning apparatus which concerns on 2nd Embodiment of this invention. In addition, about the component similar to 1st Embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  In FIG. 6, the posture of the draining plate 27 is inclined so that the end portion on the side of the standing portion 27b is higher than the horizontal position, so the shortest distance between the draining plates 27 is maximized, and air circulation is further improved. . However, each draining plate 27 is provided with a drain pipe 28 so that the condensed water on the draining plate 27 can be drained onto the lower draining plate 27. As a result, condensed water does not accumulate on the draining plate 27. Although not shown, the drain pipe 28 of the lowest draining plate 27 is led to a drain pan.

<Features of Second Embodiment>
In the air conditioner 1, the condensed water is drained to the lower draining plate 27 by the drain pipe 28, so the condensed water does not stay on the upper surface of the draining plate 27, and it is difficult for sediment to accumulate on the upper surface of the draining plate 27. For this reason, the good drainage of condensed water is maintained for a long time.

[Third Embodiment]
FIG. 7 is a perspective view showing the shape of the draining plate of the air conditioner according to the third embodiment of the present invention. In FIG. 7, the drainage groove 27d is formed by pressing the vicinity of the end of the draining plate 27 into a U shape. And the dew condensation water dripped on the draining board 27 moves to the drainage groove 27d side by being disposed in an inclined state in the air conditioner 1 so that the drainage groove 27d side is lowered, and moves along the drainage groove 27d. Then, it descends to the lower draining plate 27. As a result, condensed water does not accumulate on the draining plate 27.

<Features of Third Embodiment>
In the air conditioner 1, since the upper surface of the draining plate 27 is inclined so that the condensed water dripping onto the upper surface of the draining plate 27 flows in the longitudinal direction of the draining plate 27, the condensed water does not stay. For this reason, it is difficult for water scale to accumulate on the upper surface of the draining plate 27, and good drainage of the condensed water is maintained.

  As described above, the present invention is useful for an air conditioner of a type in which the air suction direction is selected because the posture of the draining plate that guides the condensed water generated in the indoor heat exchanger to the drain pan is variable.

Air conditioner refrigeration circuit. (A) Sectional drawing of the air horizontal suction specification of the air conditioning apparatus which concerns on 1st Embodiment of this invention. (B) Sectional drawing of under air suction specification of the air conditioning apparatus. (A) Sectional drawing which shows the attitude | position of the draining board in an air horizontal suction specification. (B) Sectional drawing which shows the attitude | position of the draining board in under air suction specification. Sectional drawing which shows the other attitude | position of the draining board in an under air suction specification. Sectional drawing which shows the other attitude | position of the draining board in an under air suction specification. Sectional drawing which shows the draining board of the air conditioning apparatus which concerns on 2nd Embodiment of this invention. The perspective view which shows the draining board of the air conditioning apparatus which concerns on 3rd Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Air conditioning apparatus 8 Casing 6 Indoor heat exchanger 11 Blower fan 12 Drain pan 27 Drain plate 27c Water storage area 28 Drain pipe (drainage means)

Claims (5)

An air conditioner for supplying air heat-exchanged by an indoor heat exchanger (6) into a room,
A drain pan (12) for recovering the dew condensation water produced on the surface of the indoor heat exchanger (6);
A draining plate (27) located upstream of the air passing through the indoor heat exchanger (6), receiving the condensed water dripping from the indoor heat exchanger (6) and guiding it to the drain pan (12); ,
With
The inclination angle of the draining plate (27) with respect to the air flow direction is variable.
Air conditioner (1). An air conditioner for supplying air heat-exchanged by an indoor heat exchanger (6) into a room,
A drain pan (12) for recovering the dew condensation water produced on the surface of the indoor heat exchanger (6);
A plurality of draining plates (27) which are located upstream of the air passing through the indoor heat exchanger (6), receive the condensed water dripping from the indoor heat exchanger (6) and guide it to the drain pan (12). )When,
With
The relative position between the draining plates (27) was variable,
Air conditioner (1). The draining plate (27) has a water storage area (27c) for accumulating a predetermined amount of the condensed water,
The air conditioner (1) according to claim 1 or 2. The draining plate (27) has drainage means (28) that guides the condensate water downward without accumulating the condensed water.
The air conditioner (1) according to claim 1 or 2. The upper surface of the draining plate (27) is installed in an inclined state so that condensed water dripping on the upper surface of the draining plate (27) flows in the longitudinal direction of the draining plate (27).
The air conditioner (1) according to claim 1 or 2.

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