JPH10160186A - Indoor unit for flush-type air-conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent dew formation around a diffuser by disposing means for temporarily enlarging the wind passage to make uniform the wind velocity distribution in the section of the diffuser side wind passage between the fan and the diffuser for bending the wind from the fan. SOLUTION: A straightening wind passage 15 is a means for temporarily enlarging the regularly enlarged wind passage in a section A for bending the wind immediately following to a fan 4 to make uniform the wind velocity distribution. Since the diffuser side wind passage 6 is not enlarged regularly over the entire length thereof but the straightening wind passage 15 for temporarily enlarging the regularly enlarged wind passage to make uniform the wind velocity distribution is posed in the section A for bending the wind immediately following to the fan 4 and the wind passage is enlarged gradually toward a diffuser 7, the wind is bent efficiently alter the wind velocity distribution is rendered uniform without requiring and wind guide.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an indoor unit of an embedded type air conditioner, and more particularly to an air path thereof. For convenience of explanation, the following description will be made with respect to an indoor unit of an air conditioner embedded in a ceiling.

[0002]

[Prior art]

Conventional example 1. FIG. 7 is a cross-sectional view of an indoor unit of a conventional ceiling-embedded air conditioner, and FIG. 8 is a schematic diagram illustrating a wind speed distribution in a wind path on the outlet side. In the figure, 1 is a unit body, 2 is a suction port for sucking air in the air-conditioned space, 3 is a heat exchanger located downstream of the suction port 2 for exchanging heat of the sucked air, and 4 is located downstream of the heat exchanger 3. A cross-flow blower 7 for performing a blowing action is an outlet for blowing out the air sucked by the blower 4, and is flush with the inlet 2.
5 is a suction side air passage located between the heat exchanger 3 and the blower 4, and 6 is located between the blower 4 and the outlet 7 and connected to the suction side air passage 5. Reference numeral 8 denotes an upper and lower flap provided at the outlet 7 for deflecting the air to be blown up and down, and reference numeral 9 denotes a left and right louver provided at the outlet 7 to deflect the air in the left and right direction.

Next, the operation will be described. When the once-through blower 4 rotates, the air in the air-conditioned space is sucked in from the suction port 2 by the blowing action thereof, passes through the heat exchanger 3 and exchanges heat, passes through the blower 4 through the suction-side wind path 5, and blows out. Flow from the road 6 to the outlet 7, the upper and lower flaps 8 and the left and right louvers 9
And is blown out again into the air-conditioned space.

[0004] Here, the wind passing through the once-through blower 4 flows in a direction intersecting with the wind path (wind flow) in the blow-out side air path 6 in FIG.
As shown in the figure, the wind speed distribution is non-uniform in the X direction.
Here, in the ceiling cassette type air conditioner, since the unit is concealed in the ceiling, the inlet 2 and the outlet 7 are on the same plane, the blow-out side air path 6 is long, and the wind passing through the blower 4 is directed at 90 degrees. Therefore, it is necessary to improve not only the air path on the suction side but also the air path on the outlet side.

Conventional example 2. FIG. 9 shows, for example, Japanese Patent Publication 5-248.
It is sectional drawing of the other conventional air conditioner shown by Unexamined-Japanese-Patent No. 652. In the drawing, reference numeral 13 denotes a back nose provided in the suction-side air passage, and reference numeral 20 denotes an air passage. Others are the same as FIG.

[0006] The air in the air-conditioned space sucked from the suction port 2 is heat-exchanged by the heat exchanger 3 by the blowing action of the blower 4, and then passes through the blow-side wind path 6 from the suction-side wind path 5 and the back nose 12. Then, the air is blown out from the air outlet 7, and the wind direction is deflected by the upper and lower flaps 8.

Then, turbulence such as backflow generated in the suction side air passage 5 on the upstream side of the blower 4 is generated in the back nose 13 so as to reduce noise and to perform efficient blowing operation. It is intended for.

Conventional example 3. An indoor unit using a sirocco fan is provided with a baffle plate for forcibly bending a part of the airflow inward at a position near the inside of the bent portion in the blow-side air passage. 1-70034
No. 6,086,045.

Conventional example 4. In addition, Japanese Unexamined Utility Model Publication No. Hei 7-26645 discloses that a dew condensation is prevented by providing a heat insulating member so as to cover a main body frame of the air outlet, and a wind direction adjusting blade frame can be suspended in the air outlet. Is disclosed.

[0010]

Since the conventional air conditioner is configured as described above, there are the following problems. (1) Although the shape of the air outlet side air path 6 is formed by a certain function, in the ceiling cassette type air conditioner, since the indoor unit is concealed in the ceiling, the suction port 2
And the outlet 7 are on the same plane, and the outlet side air path 6 becomes longer. Therefore, in the conventional shape, the wind speed distribution in the direction intersecting the air path (wind flow direction) of the outlet side air path is not uniform, and the air blowing operation is not performed. There was a problem that the efficiency became poor.

(2) Since the vertical wind speed is not uniform even at the outlet 7, the vertical wind direction is hardly deflected. The wind is entrapped at the outlet 7, resulting in dew during cooling / dry operation. There was a problem.

(3) Heat exchanger 3 sucked through suction port 2
After passing through the blower 4, when passing through the blower 4, since the once-through blower 4 has a connecting portion, it is sucked unevenly in the axial direction of the blower 4 due to the influence thereof, and then passes through the blow-out air passage 6 while being uneven. Since the air is blown out from the air outlet 7, there is a problem in that the efficiency of the air blowing operation is deteriorated, the surging resistance is reduced, and dew occurs during the cooling / dry operation due to the generation of reverse suction.

(4) There is a problem that the wind direction in the left-right direction is not easily deflected because the wind speed in the left-right direction is not uniform even at the outlet.

(5) There is a problem that the wind speed is slow at the end of the outlet 7 and the wind is entrapped depending on the use position of the left and right louvers 9, and that the area around the outlet 7 may become dewed during the cooling / dry operation. However, there is a problem that the deflection adjustment position of the left and right wind direction is limited.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and realizes an efficient blow operation.
It is an object of the present invention to obtain an indoor unit of an embedded type air conditioner capable of uniformizing a wind speed distribution of a wind blown from an outlet, improving a deflection of a wind direction, and preventing dew condensation around the outlet.

[0016]

According to the first aspect of the present invention, there is provided an indoor unit of an embedded type air conditioner, wherein an indoor unit main body, a suction port provided in the main body, for sucking air in an air-conditioned space, and a downstream of the suction port. A heat exchanger for exchanging heat with the sucked air, a blower located downstream of the heat exchanger, and an outlet for blowing air sent from the blower,
A blow-side air path located between the blower and the outlet, and a section that is provided in the section from the blower of the blow-side air path until the wind is bent. And means for uniformizing the wind speed distribution.

According to a second aspect of the present invention, there is provided the indoor unit of the embedded type air conditioner, wherein the blow-out side air passage is provided downstream of the wind speed distribution uniforming means. After narrowing the road width, it gradually expands to the outlet.

The indoor unit of the embedded type air conditioner according to the third aspect of the present invention is provided in the indoor unit main body and the main body, and suctions air in the air-conditioned space, is located downstream of the suction port, and sucks the air. A heat exchanger that exchanges heat with the air, a blower located downstream of the heat exchanger, an outlet that blows out the air sent from the blower, and a suction-side air passage located between the heat exchanger and the blower. A blower-side air path located between the blower and the outlet, and rectifying means provided on at least one of the suction-side air path and the blow-side air path to rectify the air flow in a direction perpendicular to the axis of the blower. It is a thing.

According to a fourth aspect of the present invention, there is provided an indoor unit of an embedded air conditioner, wherein the rectifying means is arranged in accordance with a connecting portion of the blower. .

An indoor unit of an embedded type air conditioner according to the invention of claim 5 is provided with an indoor unit main body, a suction port provided in the main body, for sucking air in an air-conditioned space, and located downstream of the suction port for sucking air. A heat exchanger that exchanges heat with the air, a blower located downstream of the heat exchanger, an outlet that blows out the air sent from the blower, and a suction-side air passage located between the heat exchanger and the blower. A blow-off-side air passage located between the blower and the blow-out opening, and provided at the blow-out opening,
Right and left louvers for deflecting the air to be blown out in the left and right direction,
And a guiding means provided at the outlet to guide air blown through the left and right louvers in a direction perpendicular to the outlet.

[0021]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1 FIG. Hereinafter, an indoor unit of a ceiling-mounted type air conditioner according to Embodiment 1 of the present invention will be described with reference to the drawings. FIG. 1 is a sectional view of an indoor unit of an air conditioner embedded in a ceiling according to Embodiment 1 of the present invention, and FIG. 2 is a schematic diagram showing a wind velocity distribution in a blow-side air passage.

In the figure, reference numeral 15 denotes a section A from the time immediately after the blower 4 to the time when the wind is bent, which is a rectifying means for uniformizing the wind speed distribution by temporarily expanding the width of the air path rather than the regularly widened width. It is a part wind path. Others are the same as the conventional example 1, and the description is omitted.

Next, the operation will be described. The wind having a non-uniform wind speed distribution in the X direction that has passed through the blower 4 does not have the shape of the entire blow-out side air path 6 being constantly and regularly expanded as in the related art. In the section A until the wind is bent, the rectifying section air path 15 for once widening the air path width from the regular expansion width to make the wind speed distribution uniform is provided, then narrowed, and then gradually expanded to the outlet 7. By bending the wind after uniforming the wind speed distribution, the wind can be efficiently bent without providing a wind guide plate for forcibly bending the wind in the blow-out side air passage 6. This makes it possible to equalize the wind speed of the wind blown out of the blow-out side air passage 6 and the outlet 7.

As a result, it is possible to improve aerodynamic performance such as noise reduction of the unit by efficient blowing operation. Further, as a further effect, since the air blown out from the outlet 7 becomes uniform, the deflection of the wind direction in the vertical direction is improved, and the occurrence of wind entrainment at the outlet 7 prevents the outlet during cooling / dry operation. 7 It is possible to prevent dew on the surroundings.

Embodiment 2 Hereinafter, an indoor unit of a ceiling embedded type air conditioner according to Embodiment 2 of the present invention will be described with reference to the drawings. FIG. 3 is a cross-sectional view of an indoor unit of a ceiling-mounted type air conditioner according to Embodiment 2 of the present invention, and FIG. 4 is a plan view of the main part. In the drawing, reference numeral 10 denotes a suction-side rectifying plate, which is rectification means provided in one or more sheets in the suction-side air passage 5 in accordance with a connection portion of the blower 4;
1 corresponds to the connecting portion of the blower 4 in the blow-out side air passage 6.
It is a blow-off side rectifying plate which is a rectifying means provided from one to a plurality of pieces.

Since the once-through blower 4 has a connecting portion in the axial direction, the suction-side air passage 5 is connected to the connecting portion of the blower 4 by one.
By installing one to a plurality of suction-side rectifying plates 10 and one or more blowing-side rectifying plates 11 in the outlet-side air passage 6 in accordance with a connection portion of the blower 4, the blower 4
By rectifying both when the air is sucked in and when the air is blown out, it is possible to prevent wind disturbance in the direction perpendicular to the axis of the blower 4 when passing through the blower 4 and to make the flow of the wind uniform. As a result, it is possible to improve aerodynamic performance such as noise reduction of the unit by efficient blowing operation. Further, since the flow of air in the direction perpendicular to the axis of the blower 4 is made uniform, the flow of air in the left and right directions of the outlet 7 becomes uniform, so that the deflection of the wind direction by the left and right louvers 9 is improved, and cooling and It is possible to prevent dew condensation on the vicinity of the outlet 7 and the blower 4 during the dry operation.

Embodiment 3 Hereinafter, an indoor unit of an embedded ceiling air conditioner according to Embodiment 3 of the present invention will be described with reference to the drawings. FIG. 5 is a cross-sectional view of a main part of an indoor unit of a ceiling-mounted type air conditioner according to Embodiment 3 of the present invention, and FIG. In the figure, reference numeral 12 denotes a guide plate which is a guide means for guiding the wind blown out through the left and right louvers 9 provided in the vicinity of the left and right louvers 9 of the air outlet in a predetermined direction.

By providing the guide plate 12 at the outlet 9, the wind speed at the end of the outlet 7 is prevented from becoming slow.
By arranging the guide plate 12 in parallel with the end of the outlet 7, wind is blown at right angles to the outlet 7 from between the end of the outlet and the guide plate 12, and the effect of the wind causes the left and right louvers. There is no occurrence of wind entrainment due to the use position 9, and it is possible to prevent dew condensation around the outlet 7. In addition, it is possible to increase the deflection width of the wind direction without restricting the deflection adjustment of the left and right louvers 9 from preventing dew condensation. Furthermore, it is possible to prevent dew condensation around the outlet 7 without providing a heat insulating member so as to cover the outer frame of the outlet 7.

[0029]

The indoor unit of the embedded type air conditioner according to the first aspect of the present invention is provided with an indoor unit main body, a suction port provided in the main body, for sucking air in the air-conditioned space, and located downstream of the suction port. A heat exchanger for exchanging heat with the sucked air, a blower located downstream of the heat exchanger, an outlet for blowing air sent from the blower, and a blow-side air passage located between the blower and the outlet. And, provided in the section from the blower of the blow-side air path to the bend from the blower, the wind speed distribution equalization means to once widen the air path width than the regular expansion width to equalize the wind speed distribution As a result, it is possible to equalize the wind speed of the wind blown from the blow-out side air passage and the blow-out port, to improve the aerodynamic performance such as silencing of the unit by efficient blowing operation, and to further improve the vertical direction. Wind direction deflection There is an effect that by preventing the occurrence of entrainment of the wind in the good and the air outlet to prevent condensation on the air outlet around the time of the cooling-dry operation.

According to a second aspect of the present invention, there is provided the indoor unit of the embedded air conditioner according to the first aspect of the present invention, wherein the blow-out side air passage is provided downstream of the wind speed distribution uniforming means. Since the configuration is such that the width of the path is narrowed and then gradually expanded to the outlet, the wind speed of the air blown from the outlet side air path and the outlet can be made uniform.

The indoor unit of the embedded type air conditioner according to the third aspect of the present invention is provided with an indoor unit main body, a suction port provided in the main body, for sucking air in an air-conditioned space, and located downstream of the suction port for sucking air. A heat exchanger that exchanges heat with the air, a blower located downstream of the heat exchanger, an outlet that blows out the air sent from the blower, and a suction-side air passage located between the heat exchanger and the blower. A blower-side air path located between the blower and the outlet, and rectifying means provided on at least one of the suction-side air path and the blow-side air path to rectify the air flow in a direction perpendicular to the axis of the blower. The air flow can be prevented from disturbing in the axial direction of the blower when passing through the blower, and the air flow can be made uniform. Is possible Furthermore, since the air flow in the left and right direction at the air outlet becomes uniform, the deflection of the air direction in the left and right direction is improved, and the effect of preventing dew on the air outlet and around the air outlet during cooling / dry operation due to surging. is there.

In the indoor unit of an embedded air conditioner according to a fourth aspect of the present invention, in the indoor unit of the embedded air conditioner according to the third aspect, the rectifying means is arranged in accordance with a connection portion of the blower. It is possible to prevent wind turbulence in the axial direction of the blower when passing through, and to make the flow uniform, and to improve aerodynamic performance such as noise reduction of the unit by efficient blowing operation.

An indoor unit of an embedded type air conditioner according to a fifth aspect of the present invention is provided with an indoor unit main body, a suction port provided in the main body, for sucking air in an air-conditioned space, and located downstream of the suction port for sucking air. A heat exchanger that exchanges heat with the air, a blower located downstream of the heat exchanger, an outlet that blows out the air sent from the blower, and a suction-side air passage located between the heat exchanger and the blower. A blow-off-side air passage located between the blower and the blow-out opening, and provided at the blow-out opening,
Right and left louvers for deflecting the air to be blown out in the left and right direction,
The air outlet is provided at the outlet, and a guide means for guiding the air blown out through the left and right louvers in a direction perpendicular to the outlet is provided, so that the wind speed becomes slow at the end of the outlet. The left and right louvers can be used to prevent dew condensation around the outlet without wind entrainment depending on the usage position. There is an effect that the deflection width of the wind direction can be increased, and dew condensation around the outlet is prevented without providing a heat insulating member so as to cover the outer frame of the outlet.

[Brief description of the drawings]

FIG. 1 is a schematic cross-sectional view of an indoor unit of an embedded ceiling air conditioner according to Embodiment 1 of the present invention.

FIG. 2 is a distribution diagram of the air flow on the blow-out side of the indoor unit of the air conditioner with embedded ceiling according to Embodiment 1 of the present invention.

FIG. 3 is a schematic cross-sectional view of an indoor unit of an embedded ceiling air conditioner according to Embodiment 2 of the present invention.

FIG. 4 is a plan view of a main part of an indoor unit of an embedded ceiling air conditioner according to Embodiment 2 of the present invention.

FIG. 5 is a cross-sectional view of a main part of an indoor unit of a ceiling-mounted air conditioner according to Embodiment 3 of the present invention.

FIG. 6 is a schematic diagram of an air flow direction at an outlet of an indoor unit of an embedded ceiling air conditioner according to Embodiment 3 of the present invention.

FIG. 7 is a schematic cross-sectional view of an indoor unit of a conventional ceiling-mounted air conditioner.

FIG. 8 is a distribution diagram of the air flow on the blowout side of an indoor unit of a conventional ceiling-mounted type air conditioner.

FIG. 9 is a cross-sectional view of a conventional air conditioner.

[Explanation of symbols]

1 Unit main body, 2 Suction port, 3 Heat exchanger, 4 Blower, 5 Suction side air path, 6 Outlet side air path, 7
Air outlet, 8 upper and lower flaps, 9 left and right louvers, 10 suction side rectifying plate, 11 outlet side rectifying plate, 12 guide plate, 15 rectifying section air passage.

Claims (5)

[Claims] 1. An indoor unit main body, a suction port provided in the main body, for sucking air in an air-conditioned space, a heat exchanger located downstream of the suction port and exchanging heat with the sucked air, A blower located downstream of the exchanger, an outlet for blowing out the air sent from the blower, a blower-side air passage located between the blower and the blower outlet, and the blower on the blow-side air passage And a wind speed distribution uniforming means provided in a section from the air flow to bending the flow of the wind to temporarily widen an air passage width than a regular enlarged width to uniformize a wind speed distribution. Indoor unit of air conditioner. 2. The blow-out side air path, after narrowing the air path width downstream of the wind velocity distribution equalizing means, gradually expands to the air outlet.
The indoor unit of the embedded air conditioner as described in the above. 3. An indoor unit main body; a suction port provided in the main body, for sucking air in an air-conditioned space; a heat exchanger located downstream of the suction port, for exchanging heat with the sucked air; A blower located downstream of the exchanger, an outlet for blowing out the air sent from the blower, a suction-side air path located between the heat exchanger and the blower, the blower and the blower, And a rectifying means provided in at least one of the suction-side air path and the blow-side air path and rectifying the flow of the air in a direction perpendicular to the axis of the blower. An indoor unit of an embedded type air conditioner, characterized in that: 4. The indoor unit of an embedded type air conditioner according to claim 3, wherein said rectifying means is arranged in accordance with a connecting portion of said blower. 5. An indoor unit main body, a suction port provided in the main body, for sucking air in an air-conditioned space, a heat exchanger located downstream of the suction port, for exchanging heat with the sucked air, A blower located downstream of the exchanger, an outlet for blowing out the air sent from the blower, a suction-side air path located between the heat exchanger and the blower, the blower and the blower, And a left and right louver provided in the outlet and deflecting the air to be blown out in the left-right direction. The air blown through the left and right louvers provided in the outlet is provided. A ceiling cassette type air conditioner, comprising: guidance means for guiding in a direction perpendicular to the air outlet.