JPH11101465A - Air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress an increase in ventilation resistance when the inclination angle of a heat exchanger is decreased by disposing drain troughs stepwise under the heat exchanger while superposing the straightener of the lowermost trough on a drain pan and coupling the opposite ends thereby providing a second drain pan comprising a U-shaped guide trough communicating with the first drain pan. SOLUTION: A drain trough 14 is set on the lower projection face of an indoor side heat exchanger 6 and a rising rib 14a is superposed on the rear edge 14c of drain pan surface 14b. From the rear edge 14c of a lowermost drain pan surface 14b, a straightener 14e is extended downward along the heat exchanger 6 and a plurality of troughs 14 are arranged stepwise such that they are superposed on a drain pan 7. Second drain pans 16 coupled with respective drain troughs and communicating with the drain pan 7 are disposed at the opposite ends of the trough 14 and the drain dripping from the heat exchanger 6 is received entirely by the drain trough and introduced through a guide trough 15 to the drain pan 7. According to the structure, condensate is prevented from dripping into the room and the heat exchanger can be inclined by less than 60 deg. without increasing ventilation resistance on the suction side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner for cooling or heating a room.

[0002]

2. Description of the Related Art A conventional embodiment will be described with reference to FIGS. FIGS. 11 and 13 are cross-sectional views of the main part of the ceiling-mounted type air conditioner 1, in which 2 is a front grill, 3 is an outlet, 4 is an inlet, 5 is an air filter, and 6 is a well-known. , A water receiving tray for treating condensed water in the indoor heat exchanger 6, and an air heat exchanged by the indoor heat exchanger 6 is sent to the outlet 3. A cross flow fan, 9 is a stabilizer, and 10 is a fan casing.

FIGS. 10 and 12 show an air conditioner 1 respectively.
3 is a cross-sectional view of the main part of FIG. 1, wherein 11 is a motor for driving the cross flow fan, and 12 is a power supply plate.

FIG. 13 shows an air conditioner 1 showing another conventional example.
13 is a cutaway cross-sectional view of a main part of the evaporating dish 13, wherein an evaporating dish 13 is provided below the indoor heat exchanger 6.
a and a rising rib 1 of any height around the
3b, and a plurality of evaporating dishes are installed horizontally and stepwise.

[0005]

However, in recent years, the above-mentioned indoor units have tended to be thin, and accordingly, the height of the casing has been kept low. If this is kept low, the angle of the heat exchanger 5 with respect to the horizontal plane must be reduced when incorporating the heat exchanger 5. When this angle is reduced, in the conventional configuration, fine cut-and-raised slits 19 are provided in the heat transfer fins 17 of the heat exchanger 5 in both front and back directions and alternately with respect to the fin surface.
Condensed water generated in the heat exchanger 5 is easily retained between the heat transfer fins 17, making it difficult for air to pass between the heat transfer fins 17, reducing the cooling capacity and increasing the ventilation resistance of the heat exchanger 5 when wet. And the deterioration of the wind speed distribution of the heat exchanger 5, there is a problem that the temperature distribution of the heat exchanger deteriorates and the main body dew condensation troubles occur. SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and is intended to increase the ventilation resistance of a heat exchanger without retaining condensed water even when the inclination angle of the heat exchanger is reduced. Aims to provide no air conditioner.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention has a suction port and a discharge port on a lower surface, and heat is exchanged in an indoor heat exchanger constituting a well-known refrigeration cycle in a main body. A cross-flow fan that sends the blown air to the outlet, a driving unit that drives the cross-flow fan, and a water tray that treats condensed water in the indoor-side heat exchanger, provided below the indoor-side heat exchanger. A water receiving gutter having a rising rib having a predetermined height on a lower projection surface of the indoor heat exchanger, and having a receiving surface inclined at an arbitrary angle above a horizontal plane and extending toward the heat exchanger; A draining protrusion extending downwardly from the rear edge of the water receiving gutter, the rising rib of the lower water receiving gutter, and the rear edge of the receiving surface of the upper water receiving gutter overlap with each other. From the rear edge of the water pan at the bottom A plurality of water receiving trays are arranged stepwise so that a straightening guide plate extending an arbitrary length downward along the exchanger is superimposed on the water receiving tray, and a respective water receiving gutter is provided at both ends of each water receiving gutter. And connected to the water tray
The provision of the second water tray, which is composed of a U-shaped guide gutter, allows all of the dripping water from the heat exchanger to be received by the water gutter and guided to the water tray by the guide gutter, and the condensed water to be dripped into the room. In addition, it is possible to prevent overflow of condensed water from the water receiving gutter, to guide the wind smoothly from the suction port to the heat exchanger, and to increase the heat exchanger by 60 without increasing the ventilation resistance on the suction side. The main body can be configured without increasing the height and depth of the main body.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to the first aspect of the present invention has a suction port and a discharge port on a lower surface, and the air exchanged by an indoor heat exchanger constituting a well-known refrigeration cycle in a main body is used for the air. A cross flow fan for sending to the outlet, a driving means for driving the cross flow fan, and a water tray for treating condensed water in the indoor heat exchanger, provided below the indoor heat exchanger, and A water receiving gutter having a rising rib having a predetermined height on a lower projection surface of the inner heat exchanger, a water receiving gutter having a receiving surface extending toward the heat exchanger at an arbitrary angle above a horizontal plane, and the water; The protrusion for draining extending downward at the rear edge of the receiving gutter, the rising rib of the lower water receiving gutter, and the rear edge of the receiving surface of the upper water receiving gutter overlap, and the water at the lowermost end Along the heat exchanger from the back edge of the pan A plurality of water receiving trays are arranged stepwise so that a straightening guide plate extending an arbitrary length is superposed on the water receiving tray, and connected to respective water receiving gutters at both ends of each water receiving gutter. By providing the second water receiving tray composed of a U-shaped guide gutter communicating with the receiving tray, all of the dripping water from the heat exchanger can be received by the water receiving gutter and guided to the water receiving tray by the guide gutter. It is possible to prevent dripping of condensed water, overflow of condensed water from a water receiving gutter, and the like. Further, by providing a draining protrusion extending downward at the rear edge of the water receiving gutter, water dripping from the heat exchanger to the rear edge of the water receiving gutter rubs on the back surface of the water receiving gutter. To prevent dripping into the room.

In addition, the tray surface of the water receiving gutter is inclined at an arbitrary angle above the horizontal surface toward the heat exchanger,
By providing a straightening guide plate extending any length downward along the heat exchanger from the rear edge of the water tray at the bottom end,
Able to guide the wind smoothly from the suction port to the heat exchanger and improve the performance by improving the noise value and reducing the capacity due to the deterioration of wind speed distribution, mainly in the area close to the cross flow fan. Can be.

According to a second aspect of the present invention, the shape of the rectifying guide plate extending an arbitrary length downward along the heat exchanger from the rear edge of the water receiving tray at the lowermost end is formed in the longitudinal direction of the heat exchanger. The center of the center is a stepped shape with a predetermined width, so that it is possible to improve the performance of the part where the wind speed is extremely fast near the cross flow fan and also in the longitudinal direction of the heat exchanger, further improving the performance Can be.

According to a third aspect of the present invention, the water receiving gutter is arranged so that the distance between the water receiving trays in the second water receiving tray becomes larger as the distance from the cross flow fan increases, so that the elevation of the heat exchanger can be reduced. The wind speed distribution can be further improved, and the performance can be improved, such as lowering the noise level and increasing the heat exchanger capacity.

[0011]

Embodiments of the present invention will be described below with reference to the drawings.

Embodiment 1 FIG. 1 illustrates an embodiment of the present invention with reference to the drawings. FIG. 2 is a perspective view of a ceiling-installed type air conditioner main body 1 showing a first embodiment of the present invention, and FIGS. 1 and 3 are cutaway cross-sectional views of main parts of the air conditioner main body 1. FIG. 4 and 5 each show a portion of a water receiving tray.

In the drawing, reference numeral 2 denotes a front grill, 3 denotes an outlet, 4 denotes a suction port, 5 denotes an air filter, 6 denotes an indoor heat exchanger constituting a known refrigeration cycle, and 7 denotes the indoor heat exchanger. Reference numeral 8 denotes a cross-flow fan, 9 denotes a stabilizer, and 10 denotes a fan casing. FIG. 3 is a cutaway vertical sectional view of a main part of the air conditioner, in which 11 is a motor for driving the cross flow fan 8, and 12 is a power supply plate. 14 is a water receiving gutter provided below the indoor heat exchanger 6 and on the projection surface of the heat exchanger, 14a is a rising rib having a predetermined height, and 14b is an arbitrary angle α inclined above a horizontal plane. A plate surface extending toward the heat exchanger 6, 14c is a rear edge of the upper plate, and 14d is a draining projection extending downward from the rear edge. The water receiving tray 14 includes the rising rib 14 a and the receiving tray surface 14.
b is superimposed and the heat exchanger 6 is moved from the rear edge 14c of the receiving surface 14b of the water receiving gutter 14 at the lowermost end.
A plurality of rectifying guide plates 14e extending downward by an arbitrary length along are arranged in a step-like manner so as to overlap with the water receiving tray 7. U-shaped guide gutter 1 connected to and connected to the water receiving tray 7
A second water tray 16 is provided. With this configuration, all the dripping water from the heat exchanger can be received by the water receiving gutter and guided to the water receiving tray by the guide gutter, thereby preventing dripping of the condensed water into the room and overflow of the condensed water from the water receiving gutter. The heat exchanger can be guided smoothly from the suction port to the heat exchanger, and the heat exchanger can be tilted to less than 60 ° without increasing the ventilation resistance on the suction side. The main body can be configured without increasing the number.

Next, a second embodiment of the present invention will be described with reference to FIGS. FIG. 6 is a plan view of the second water receiving tray 18 of the present invention, and FIG. 7 is a transverse sectional view of the same. In the same figure, the heat exchanger 6
Of the rectifying guide plate 17e extending an arbitrary length downward along the shape of the heat exchanger 6 into a stepped shape having a predetermined width around a center (AA) in the longitudinal direction of the heat exchanger 6 by a predetermined width. Accordingly, the performance of the portion 6a, which is close to the cross flow fan 8 in the heat exchanger 6 and is extremely fast, can be improved in the longitudinal direction of the heat exchanger 6, and the performance can be further improved.

Next, a third embodiment of the present invention will be described with reference to FIG. FIG. 8 is a cross-sectional view of a second water receiving tray 20 of the present invention. A plurality of water receiving gutters 19 are arranged stepwise below the heat exchanger 6 as in the first and second embodiments. ,
At both ends, a U-shaped guide gutter 21 communicating with the water receiving tray 7 is provided.
Is provided. The distances 11, 12, and 13 between the water receiving gutters 20 are set to be larger (13>12> 11) as the distance from the cross flow fan 8 increases. This makes it possible to further improve the wind speed distribution on the vertical surface of the heat exchanger, and to improve the performance such as a reduction in the noise value and an increase in the heat exchanger capacity.

[0016]

As is apparent from the above embodiment, the invention according to claim 1 is an indoor heat exchanger having a suction port and a discharge port on the lower surface and constituting a well-known refrigeration cycle in a main body. A cross flow fan that sends the heat-exchanged air to the outlet, a driving unit that drives the cross flow fan, and a water tray that treats condensed water in the indoor heat exchanger, wherein the indoor heat exchange is performed. A rising rib having a predetermined height is provided below the vessel and on a lower projection plane of the indoor heat exchanger, and is formed of a tray surface inclined toward the heat exchanger at an arbitrary angle above a horizontal plane. The water receiving gutter, the drainage protrusion extending downwardly to the rear edge of the water receiving gutter, the rising rib of the lower water receiving gutter, and the rear edge of the receiving surface of the upper water receiving gutter overlap. Together with the water tray at the bottom A plurality of water trays are arranged stepwise so that a straightening guide plate extending any length downward along the heat exchanger from the water tray overlaps with the water tray, and respective water trays are provided at both ends of each water tray. By providing a second water receiving tray formed of a U-shaped guide gutter connected to the receiving gutter and communicating with the water receiving tray, all of the dripping water from the heat exchanger is received by the water receiving gutter, and the water receiving tray is received by the guide gutter. To prevent the condensed water from dropping on the guide, overflow of the condensed water from the water receiving gutter, and the like. Further, by providing a draining protrusion extending downward at the rear edge of the water receiving gutter, water dripping from the heat exchanger to the rear edge of the water receiving gutter rubs on the back surface of the water receiving gutter. To prevent dripping into the room.

In addition, the tray surface of the water receiving gutter is inclined at an arbitrary angle above the horizontal surface toward the heat exchanger,
By providing a straightening guide plate extending any length downward along the heat exchanger from the rear edge of the water tray at the bottom end,
Able to guide the wind smoothly from the suction port to the heat exchanger and improve the performance by improving the noise value and reducing the capacity due to the deterioration of wind speed distribution, mainly in the area close to the cross flow fan. Can be.

According to a second aspect of the present invention, the shape of the rectifying guide plate extending an arbitrary length downward along the heat exchanger from the rear edge of the water receiving tray at the lowermost end is formed in the longitudinal direction of the heat exchanger. The center of the center is a stepped shape with a predetermined width, so that it is possible to improve the performance of the part where the wind speed is extremely fast near the cross flow fan and also in the longitudinal direction of the heat exchanger, further improving the performance Can be.

According to the third aspect of the present invention, the water receiving gutter is arranged so that the distance between the water receiving trays in the second water receiving tray becomes larger as the distance from the cross flow fan increases, so that the height of the vertical surface of the heat exchanger can be improved. The wind speed distribution can be further improved, and performance improvements such as a reduction in noise value and an increase in heat exchanger capacity can be achieved.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of an air conditioner according to an embodiment of the present invention.

FIG. 2 is a perspective view of the air conditioner.

FIG. 3 is a longitudinal sectional view of the air conditioner.

FIG. 4 is a front view of a water tray in the air conditioner.

FIG. 5 is a sectional view taken along line AA of FIG. 4;

FIG. 6 is a plan view of a second water tray according to the second embodiment of the present invention.

FIG. 7 is a sectional view taken along the line BB of FIG. 6;

FIG. 8 is a cross-sectional view of a second water tray according to the third embodiment of the present invention.

FIG. 9 is a cross-sectional view of an air conditioner showing a first conventional example.

FIG. 10 is a longitudinal sectional view of the air conditioner.

FIG. 11 is a cross-sectional view of an air conditioner showing a second conventional example.

FIG. 12 is a longitudinal sectional view of the air conditioner.

FIG. 13 is a cross-sectional view of an air conditioner showing a third conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Air conditioner main body 2 Front grille 3 Outlet 4 Suction port 5 Air filter 6 Heat exchanger 7 Water receiving tray 8 Cross flow fan 9 Stabilizer 10 Fan casing 14, 17, 19 Water receiving gutter 14a, 17a, 19a Rising rib 14b, 17b, 19b Receiving surface 14c, 17c, 19c Trailing edge 14d, 17d, 19d Projection 14e, 17e, 19e Rectifying guide plate 15, 17, 21 Guide gutter 16, 18, 20 Second water receiving plate

Claims (3)

[Claims] 1. A lower surface having a suction port and a discharge port,
A cross-flow fan that sends air heat-exchanged by an indoor-side heat exchanger that constitutes a well-known refrigeration cycle to the outlet, a driving unit that drives the cross-flow fan, and an indoor heat exchanger. A water receiving tray for treating condensed water, a rising rib having a predetermined height below the indoor heat exchanger and on a lower projection surface of the indoor heat exchanger, and A water receiving gutter having an angled inclination, a receiving surface extending toward the heat exchanger, a draining protrusion extending downward at a rear edge of the water receiving gutter, and a rising rib of a lower water receiving gutter; The rear edge of the tray surface of the upper water receiving gutter overlaps, and the rectifying guide plate extending an arbitrary length downward along the heat exchanger from the rear edge of the water receiving tray at the lowermost end forms the water. Water tray in a step-like fashion to overlap with the tray Plurality placed, connected with respective water receiving each water receiving trough across the trough, U leading to the water receiving tray
An air conditioner provided with a second water tray formed of a letter-shaped guide gutter. 2. A shape of a rectifying guide plate extending an arbitrary length downward along a heat exchanger from a trailing edge of a water receiving tray at a lowermost end, and a predetermined shape centering on a longitudinal center of the heat exchanger. The air conditioner according to claim 1, wherein the air conditioner has a stepped shape having a width corresponding to a step. 3. The air conditioner according to claim 1, wherein the water receiving gutters are arranged such that an interval between the water receiving plates in the second water receiving tray increases as the distance from the cross flow fan increases.