JPH04316938A - Outdoor unit of air conditioner - Google Patents

Abstract

PURPOSE:To prevent back-flow of air into an indoor unit of an air conditioner due to a gust while an outdoor unit with a snowbreak hood is operated in cooling mode. CONSTITUTION:An outdoor unit main body 1 of an air conditioner is provided with an air delivery port 2 on top and a snowbreak hood 5 which surrounds the periphery of the air delivery port 2 and the upper face and has an air outlet 6 that opens on the side. A swing flap 9 is furnished on the opposite side to the air outlet 6 and swingably pivoted to the snowbreak hood 5 at the upper edge so that it is closed by the self-weight and opened by a gust which blows into the hood 5 through the air outlet 6.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an outdoor unit for an air conditioner, and more particularly to an outdoor unit for an air conditioner equipped with a snow protection hood.

0002

[Prior Art] When installing an outdoor unit for an air conditioner with an air outlet on the top surface, in areas with heavy snowfall, if snow accumulates on the air outlet of the outdoor unit, the air cannot blow out and the operation cannot be carried out. Therefore, snow accumulation on the outdoor unit outlet is prevented by surrounding the area and top surface of the outlet of the outdoor unit with a snow protection hood (
For example, see Utility Model Application Publication No. 15471/1983) As shown in FIG. 9, the above outdoor unit for an air conditioner is
Inside the outdoor unit main body 1' having an air outlet 2' on the top surface, there is a heat exchanger 3' that acts as an evaporator during heating operation and as a condenser during cooling operation, and air that has passed through the heat exchanger 3'. A fan 4' for blowing out W to the air outlet 2'
There is a snow protection hood 5' which surrounds the periphery and upper surface of the air outlet 2' and has an air outlet 6' opening laterally. Reference numeral 7' is a suction port.

[0003] The snow protection hood is not removed even in summer, so during cooling operation, the air W that has cooled the heat exchanger 3' acting as a condenser flows through the air outlet 2' and the snow protection hood 5'. The gust of wind W is blown out from the air outlet 6' side.
', the gust of wind W' is trapped inside the snow protection hood 5' and tends to flow back into the outdoor unit main body 1' from the air outlet 2'. In this case, the phenomenon appears as if the fan 4' has stopped, and a temporary shortage of airflow occurs. Then, the heat exchanger 3' becomes insufficiently cooled and the high pressure increases abnormally, causing a problem that a protection device (for example, a high pressure switch) is activated and abnormally stops.

0004

[Problems to be Solved by the Invention] The above-mentioned problems impair the reliability of outdoor units for air conditioners installed outdoors, and are therefore considered important problems to be solved.

[0005] The present invention has been made to solve the above-mentioned problems, and is a method of preventing backflow of air into the outdoor unit due to gusts of air when operating an outdoor unit for an air conditioner equipped with a snow protection hood for cooling. The purpose is to obtain.

[0006]

[Means for Solving the Problem] In the invention of claim 1, as a means for solving the above problem, as shown in the drawing, an outdoor unit main body 1 having an air outlet 2 on the upper surface is provided with an air outlet 2.
In an outdoor unit for an air conditioner, an air conditioner outdoor unit is equipped with a snow prevention hood 5 having an air outlet 6 that surrounds the periphery and upper surface of the air conditioner and opens laterally. The opening/closing body 9 is pivotably supported on the air outlet 5 and is closed by its own weight and opened by a gust of wind blown from the air outlet 6.

[0007] In the invention of claim 2, as a means for solving the above problem, as shown in the drawing, an air outlet 2 is provided on the upper surface.
In an outdoor unit for an air conditioner, a snow prevention hood 5 having an air outlet 6 that surrounds the periphery and upper surface of the air outlet 2 and opens laterally is attached to an outdoor unit main body 1 having a The side facing the outlet 6 is constituted by a porous member 12 through which air can circulate.

[0008] In the invention of claim 3, as a means for solving the above problem, as shown in the drawing, an air outlet 2 is provided on the upper surface.
In an outdoor unit for an air conditioner, a snow prevention hood 5 having an air outlet 6 that surrounds the periphery and upper surface of the air outlet 2 and opens laterally is attached to an outdoor unit main body 1 having a The side facing the outlet 6 is constituted by a shutter-like member 13 through which air can circulate.

[0009]

[Function] According to the invention of claim 1, the following effects can be obtained by the above-mentioned means.

That is, during cooling operation, the snow protection hood 5
When a gust of wind W' blows in from the air outlet 6 side, the opening/closing body 9 forming the side opposite to the air outlet 6 is opened by the gust of wind W', and the gust of wind W' blown in from the air outlet 6 opens. passes through the opening formed by opening the opening/closing body 9. Therefore, backflow of wind into the outdoor unit main body 1 is prevented.

[0011] In the invention of claim 2, the following effects can be obtained by the above-mentioned means.

That is, during cooling operation, the snow protection hood 5
Even when a gust of wind W' blows in from the air outlet 6 side, the gust of wind W' passes through the porous member 12 that constitutes the side opposite to the air outlet 6. Therefore, backflow of wind into the outdoor unit main body 1 is prevented.

[0013] According to the third aspect of the invention, the following effects can be obtained by the above means.

That is, during cooling operation, the snow protection hood 5
Even when a gust of wind W' blows in from the side of the air outlet 6, the gust of wind W' passes through the shutter-like member 13 forming the side opposite to the air outlet 6. Therefore, backflow of wind into the outdoor unit main body 1 is prevented.

[0015]

According to the invention as claimed in claim 1, there is provided a snow protection hood having an outdoor unit body 1 having an air outlet 2 on the upper surface, and an air outlet 6 that surrounds the periphery and upper surface of the air outlet 2 and opens laterally. In the outdoor unit for an air conditioner, the side of the snow prevention hood 5 opposite to the air outlet 6 is pivotally supported at its upper end relative to the snow prevention hood 5 and is closed by its own weight. The opening/closing body 9 is configured to open when a gust of wind blows in from the air outlet 6, and when a gust of wind W' blows in from the air outlet 6 side of the snow protection hood 5 during cooling operation, the opening/closing body 9 opens the gust of wind W.
Since the air outlet 6 can be opened by
The gust of wind W' blown from the opening and closing body 9 passes through the opening formed by opening the opening/closing body 9, and the gust of wind W' blows into the outdoor unit main body 1.
Backflow of wind inward will no longer occur. Therefore, from the point where insufficient air volume blown out from the air outlet 2 does not occur,
There is no insufficient cooling of the heat exchanger 3, which acts as a condenser, and there is an excellent effect that reliability is greatly improved. Note that during snowfall, the opening/closing body 9 is closed due to its own weight, so there is no possibility that the function as the snow protection hood 5 will be impaired.

According to the invention of claim 2, the air outlet 2 is provided on the upper surface.
In an outdoor unit for an air conditioner, a snow prevention hood 5 having an air outlet 6 that surrounds the periphery and upper surface of the air outlet 2 and opens laterally is attached to an outdoor unit main body 1 having a The side facing the outlet 6 is configured with a porous member 12 through which air can flow, so that even when a gust of wind W' blows from the air outlet 6 side of the snow protection hood 5 during cooling operation, the gust of wind W' can pass through the porous member 12, so the outdoor unit main body 1
Since the inward flow of air no longer occurs and the amount of air blown out from the outlet 2 is no longer insufficient, there is no insufficient cooling of the heat exchanger 3, which acts as a condenser.
This has the excellent effect of significantly improving reliability. Note that during snowfall, since snow gets caught in the porous member 12, there is no risk of impeding the function of the snow protection hood 5.

According to the third aspect of the invention, the air outlet 2 is provided on the upper surface.
In an outdoor unit for an air conditioner, a snow prevention hood 5 having an air outlet 6 that surrounds the periphery and upper surface of the air outlet 2 and opens laterally is attached to an outdoor unit main body 1 having a The side facing the outlet 6 is configured with a shutter-like member 12 through which air can flow, so that even when a gust of wind W' blows from the air outlet 6 side of the snow protection hood 5 during cooling operation, the gust of wind W ' is made to be able to pass through the shutter-like member 12, so that no backflow of wind into the outdoor unit main body 1 occurs, and an insufficient amount of air blown out from the outlet 2 does not occur, so that it acts as a condenser. Insufficient cooling of the heat exchanger 3 does not occur, which has the excellent effect of significantly improving reliability. Note that during snowfall, since snow gets caught on the shutter-like member 12, there is no risk of impairing the function of the snow protection hood 5.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Some preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

Embodiment 1 FIGS. 1 and 2 show an outdoor unit for an air conditioner according to Embodiment 1 of the present invention. This embodiment is based on claim 1
This corresponds to the invention of

The outdoor unit for an air conditioner according to this embodiment has a heat exchanger 3 in an outdoor unit main body 1 having an air outlet 2 on the top surface, which acts as an evaporator during heating operation and as a condenser during cooling operation. and a fan 4 for blowing out the air W that has passed through the heat exchanger 3 to the air outlet 2, and an air outlet 6 that surrounds the periphery and upper surface of the air outlet 2 and opens laterally. The structure is such that a snow protection hood 5 having a snow protection hood 5 is attached thereto. Reference numeral 7 is a suction port.

The snow protection hood 5 has side portions 5a, 5a surrounding the periphery and the upper surface of the air outlet 2;
It is a box-shaped body consisting of a back surface portion 5b and a ceiling portion 5c that covers the upper surface of the air outlet 2, and the back surface portion 5b and the ceiling portion 5c have a downward slope toward the side opposite to the air outlet 6. has been done. The snow protection hood 5 configured in this manner is supported on the surface of the outdoor unit main body 1, and therefore has excellent durability against snow accumulation.

[0022] An opening 8 opposing the air outlet 6 is formed in the back surface portion 5b, and an opening/closing body 9 for opening and closing the opening 8 is attached.

The upper end of the opening/closing body 9 has hinges 10, 10.
It is pivotably supported to the rear end of the ceiling part 5c via the air outlet 6, and is opened by wind force when a gust of wind W' blows in from the air outlet 6 side, but in other cases, it is closed by its own weight. It is to be done. In other words, in the case of this embodiment, the snow protection hood back portion 5b is constituted by the opening/closing body 9.

The outdoor unit for an air conditioner constructed as described above operates as follows.

When operating in a normal wind environment, the air W that has passed through the heat exchanger 3 is blown out through the air outlet 2 and the air outlet 6 of the snow protection hood 5.

By the way, during the cooling operation when the wind is strong, a gust of wind W' may blow in from the air outlet 6 side of the snow protection hood 5. However, as shown by the chain line in Figure 1, the gust W
', and the gust of wind W' passes through the opening 8 formed by opening the opening/closing body 9. Therefore, backflow of wind into the outdoor unit main body 1 does not occur,
Since the amount of air blown out from the outlet 2 will not be insufficient, the heat exchanger 3 functioning as a condenser will not be insufficiently cooled, and reliability will be greatly improved.

It should be noted that during snowfall, the opening/closing body 9 is closed due to its own weight, so there is no risk of impairing the function of the snow protection hood 5.

Embodiment 2 FIG. 3 shows an outdoor unit for an air conditioner according to Embodiment 2 of the present invention. This embodiment corresponds to the invention of claim 1.

In the case of this embodiment, openings 8, 8 are formed in the back side of the snow hood 5b and are divided into two vertically by the middle crosspiece 11, and an opening/closing body 9 is provided to open and close these openings 8, 8, respectively. , 9 are attached. In addition, the number of opening/closing bodies 9 can also be two or more.

The upper ends of the opening/closing bodies 9, 9 are connected to the rear end of the ceiling portion 5c and the middle crosspiece 11 by hinges 10, 1.
0, respectively, and are pivotably supported.

[0031] Other configurations and effects are as in Example 1.
Since it is similar to , the explanation will be omitted.

Embodiment 3 FIGS. 4 and 5 show an outdoor unit for an air conditioner according to Embodiment 3 of the present invention. This embodiment is based on claim 2
This corresponds to the invention of

In the case of this embodiment, the opening 8 formed in the back portion 5b of the snow protection hood is covered with a wire mesh 12 having a mesh size of approximately 3 mm, which is a porous member through which air can flow. That is, in the case of this embodiment, the snow protection hood rear part 5b is connected to the wire mesh 1.
It is supposed to be composed of 2. In addition,
In addition to the wire mesh of this embodiment, a punch plate or the like may be used as the porous member. The other configurations are the same as in the first embodiment.

With the above configuration, during cooling operation, gusts of wind W are removed from the air outlet 6 side of the snow protection hood 5.
Even when the gust of wind W' blows into the wire mesh 1,
2, and no backflow of wind into the outdoor unit body occurs. Therefore, since the amount of air blown out from the outlet 2 will not be insufficient, the heat exchanger 3 functioning as a condenser will not be insufficiently cooled, and reliability will be greatly improved.

[0035] Furthermore, during snowfall, since snow gets caught on the wire mesh 12, there is no risk of impairing the function of the snow protection hood 5.

Embodiment 4 FIG. 6 shows an outdoor unit for an air conditioner according to Embodiment 4 of the present invention. This embodiment corresponds to the second aspect of the invention.

[0037] This example is a modification of Example 3, and includes:
The back surface portion 5b and ceiling portion 5c of the snow protection hood 5 have a continuous arc shape. Further, the back surface portion 5b and the ceiling portion 5c are constituted by a wire mesh 12. The other configurations and effects are the same as in the third embodiment.

Embodiment 5 FIGS. 7 and 8 show an outdoor unit for an air conditioner according to Embodiment 5 of the present invention. This embodiment is based on claim 3.
This corresponds to the invention of

In the case of this embodiment, the opening 8 formed in the back part 5b of the snow protection hood is a shutter-like member 13 through which air can circulate.
covered by. The shutter-like member 13 is constructed by arranging a large number of slightly downwardly inclined plates 14, 14, etc. at predetermined intervals in the horizontal direction. The other configurations are the same as in the third embodiment.

With the above configuration, during cooling operation, gusts of wind W are removed from the air outlet 6 side of the snow protection hood 5.
Even when a gust of wind W' blows in, the gust of wind W' passes through the shutter-like member 13, and no backflow of wind into the outdoor unit main body 1 occurs. Therefore, since the amount of air blown out from the outlet 2 will not be insufficient, there will be no insufficient cooling of the heat exchanger 3, which acts as a condenser.
Reliability is greatly improved.

[0041] Furthermore, during snowfall, the shutter-like member 13
Since snow gets caught in the hood, there is no risk of impeding its function as the snow protection hood 5.

It goes without saying that the present invention is not limited to the configurations of the embodiments described above, and that the design can be modified as appropriate without departing from the gist of the invention.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view of an outdoor unit for an air conditioner according to a first embodiment of the present invention.

FIG. 2 is a perspective view of an outdoor unit for an air conditioner according to Example 1 of the present invention.

FIG. 3 is a longitudinal sectional view of an outdoor unit for an air conditioner according to a second embodiment of the present invention.

FIG. 4 is a longitudinal sectional view of an outdoor unit for an air conditioner according to a third embodiment of the present invention.

FIG. 5 is a perspective view of an outdoor unit for an air conditioner according to a third embodiment of the present invention.

FIG. 6 is a longitudinal sectional view of an outdoor unit for an air conditioner in Example 4 of the present invention.

FIG. 7 is a longitudinal cross-sectional view of an outdoor unit for an air conditioner according to a fifth embodiment of the present invention.

FIG. 8 is a perspective view of an outdoor unit for an air conditioner according to a fifth embodiment of the present invention.

FIG. 9 is a longitudinal sectional view of a conventional outdoor unit for an air conditioner.

[Explanation of symbols]

1 is the outdoor unit body, 2 is an air outlet, 5 is a snow hood, 6 is an air outlet, 9 is an opening/closing body, 12 is a porous member, 13 is a shutter member, and W' is a gust of wind.

Claims (3)

[Claims] 1. A snow protection hood (1) having an outdoor unit main body (1) having an air outlet (2) on the upper surface, and an air outlet (6) surrounding the air outlet (2) and the upper surface and opening laterally. 5), in which the side of the snow-proof hood (5) opposite to the air outlet (6) is pivoted so that the upper end thereof can swing freely relative to the snow-proof hood (5). An outdoor unit for an air conditioner, characterized in that it is constructed of an opening/closing body (9) that is closed by its own weight and opened by a gust of wind blown from the air outlet (6). 2. A snow protection hood (1) having an outdoor unit main body (1) having an air outlet (2) on its upper surface, and an air outlet (6) surrounding the air outlet (2) and the upper surface and opening laterally. 5), in which the side of the snow protection hood (5) opposite to the air outlet (6) is configured with a porous member (12) through which air can circulate. Features: Outdoor unit for air conditioners. 3. An outdoor unit body (1) having an air outlet (6) on the upper surface, and a snow protection hood (1) having an air outlet (6) that surrounds the periphery and upper surface of the air outlet (2) and opens laterally. 5), in which the side of the snow protection hood (5) opposite to the air outlet (6) is configured with a shutter-like member (13) through which air can circulate. An outdoor unit for air conditioners featuring: