The present invention relates to an outdoor unit of a refrigeration apparatus, and particularly, to an outdoor unit that blows air upward from a top surface.
In an outdoor unit of a refrigeration apparatus that blows air upward, specifically, an outdoor unit of an air conditioner as described in Patent Literature 1 (JP 2007-263386 A), a service person performs maintenance or the like after detaching a panel screwed to a casing at a position opposite to an electric component box when accessing the electric component box, for example, at a time of initial setting or maintenance after installment.
However, the panel as described above, which is wide and heavy and has both ends surrounded by supports of a casing, is not easy to detach and requires a lot of workload.
One or more embodiments of the present invention provide an outdoor unit of a refrigeration apparatus that facilitates detachment of a panel, for example, at a time of accessing an electric part, such as an electric component box.
An outdoor unit of a refrigeration apparatus according to one or more embodiments of the present invention includes a fan, an electric part, and a casing. The fan generates a flow of air passing through a heat exchanger and blows the air upward. The electric part accommodates a group of electric components. The casing includes a panel. The panel is disposed in a predetermined position opposite to the electric part. Further, the panel is divided into at least first and second panels in a lateral direction in a front view. The first panel is opposed to at least part of the electric part. The first panel is detachably attached while the second panel remains attached to the casing.
In this outdoor unit, since the panel is divided into the first and second panels, a service person for initial setting or maintenance can detach only the first panel from the casing while the second panel remains attached to an original position of the casing when accessing the electric part. As a result, the service person can access the electric part while only the first panel is detached. Further, a conventional configuration needs detachment of a plurality of panels, increases a total weight of the panels though reducing a weight of each panel, and increases the number of panels to complicate a detaching method. However, this outdoor unit eliminates the need for such a complicated detaching method, saves operation time, and improves work efficiency.
In an outdoor unit of a refrigeration apparatus according one or more embodiments of the present invention, a width of at least part of the first panel is equal to or wider than a width of the electric part as viewed from a side of the first panel.
In this outdoor unit, only detaching the first panel from the casing allows for access to the electric part. This improves work efficiency at a time of initial setting and maintenance after installment.
In an outdoor unit of a refrigeration apparatus according to one or more embodiments of the present invention, the first panel includes first and second regions having different height positions and widths. The first region is located above the second region, and a width of the first region is wider than a width of the second region.
In this outdoor unit, a downward-facing surface or an inclined surface is formed at a position shifting from the first region having a wide width to the second region having a narrow width. This surface functions as a handle for lifting the first panel.
In an outdoor unit of a refrigeration apparatus according to one or more embodiments of the present invention, the first panel includes an inclined part that makes the width of the first panel narrower as the height position goes down in a front view.
This outdoor unit, which has an inclined part that faces obliquely downward, enables the service person to lift the first panel by hooking a finger onto the inclined part to detach the first panel from the casing, and thus improves work efficiency.
In an outdoor unit of a refrigeration apparatus according to one or more embodiments of the present invention, at least part of the first panel overlaps the second panel.
In this outdoor unit, when detaching the first panel from the casing, it is easier for the service person to lift the first panel by inserting a finger into a gap where the first and second panels do not overlap each other than by gripping a part where the first and second panels overlap each other. Specifically, a recess including an “overlapping part” and a “non-overlapping part” of the first and second panels is formed, and the service person inserts a finger into the “non-overlapping part” of the recess to grip part of the recess. As a result, work efficiency is improved.
In an outdoor unit of a refrigeration apparatus according to one or more embodiments of the present invention, the first panel includes a flat part that faces vertically downward or obliquely downward.
This outdoor unit enables the service person to lift the first panel by hooking a finger onto the flat part that faces vertically downward or obliquely downward to detach the first panel from the casing, and thus improves work efficiency.
In an outdoor unit of a refrigeration apparatus according to one or more embodiments of the present invention, the casing further includes a support disposed in at least one corner. In a front view of the casing, an end of the first panel is on a same plane as an outer contour plane of the support or laterally projects from the outer contour plane.
In a conventional outdoor unit, which has the end of the panel surrounded by the supports, the service person cannot grip but pull out the end of the panel with a pad of a finger, and cannot easily detach the panel from the casing.
In this outdoor unit, the end of the first panel is located on the same plane as the outer contour plane of the support or laterally projects from the outer contour plane, so that the service person can grip the end of the panel and easily detach the panel from the casing.
In an outdoor unit of a refrigeration apparatus according to one or more embodiments of the present invention, the casing further includes a support disposed in at least one corner. The end of the first panel is opposed to a corner of the support with a predetermined gap between each other.
This outdoor unit ensures a space for hooking a finger onto the end of the first panel to detach the first panel from the casing, and thus allows the service person to easily grip the first panel.
In an outdoor unit of a refrigeration apparatus according to one or more embodiments of the present invention, the first panel includes a side end part that extends in a depth direction.
This outdoor unit enables the service person to lift the first panel by hooking a finger onto the side end part to detach the first panel from the casing, and thus improves work efficiency.
In an outdoor unit of a refrigeration apparatus according to one or more embodiments of the present invention, the first panel includes a hook part that hooks onto the casing.
This outdoor unit prevents erroneous assembling because the hook part functions for positioning of the first panel.
In an outdoor unit of a refrigeration apparatus according to one or more embodiments of the present invention, each of a plurality of panels including the first panel includes a hook part that hooks onto the casing. Further, each panel has a different arrangement of the hook part.
This outdoor unit prevents erroneous assembling by having a different arrangement of the hook parts for positioning at the time of attachment, for example, a different space in-between, because there may be erroneous assembling when the different panels have similar forms.
Since the panel is divided into first and second panels, the outdoor unit of a refrigeration apparatus according to one or more embodiments of the present invention enables the service person for initial setting or maintenance to detach only the first panel from the casing while the second panel remains attached to the original position of the casing when the service person accesses the electric part. As a result, the service person can access the electric part while only the first panel is detached. Further, a conventional configuration needs detachment of a plurality of panels, increases a total weight of the panels though reducing a weight of each panel, and increases the number of panels to complicate a detaching method. However, this outdoor unit eliminates the need for such a complicated detaching method, saves operation time, and improves work efficiency.
In the outdoor unit of a refrigeration apparatus according to one or more embodiments of the present invention, only detaching the first panel from the casing allows for access to the electric part. This improves work efficiency at the time of initial setting and maintenance after installment.
In the outdoor unit of a refrigeration apparatus according to one or more embodiments of the present invention, the downward-facing surface or the inclined surface is formed at the position shifting from the first region having a wide width to the second region having a narrow width. This surface functions as the handle for lifting the first panel.
The outdoor unit of a refrigeration apparatus according to one or more embodiments of the present invention has the inclined part that faces obliquely downward, enables the service person to lift the first panel by hooking a finger onto the inclined part to detach the first panel from the casing, and thus improves work efficiency.
In the outdoor unit of a refrigeration apparatus according to one or more embodiments of the present invention, when detaching the first panel from the casing, it is easier for the service person to lift the first panel by inserting a finger into the gap where the first and second panels do not overlap each other than by gripping the part where the first and second panels overlap each other. Specifically, a recess including an “overlapping part” and a “non-overlapping part” of the first and second panels is formed, and the service person inserts a finger into the “non-overlapping part” of the recess to grip part of the recess. As a result, work efficiency is improved.
The outdoor unit of a refrigeration apparatus according to one or more embodiments of the present invention enables the service person to lift the first panel by hooking a finger onto the flat part that faces vertically downward or obliquely downward to detach the first panel from the casing, and thus improves work efficiency.
In the outdoor unit of a refrigeration apparatus according to one or more embodiments of the present invention, the end of the first panel is located on the same plane as the outer contour plane of the support or laterally projects from the outer contour plane, so that the service person can grip the end of the panel and easily detach the panel from the casing.
The outdoor unit of a refrigeration apparatus according to one or more embodiments of the present invention ensures the space for hooking a finger onto the end of the first panel to detach the first panel from the casing, and thus allows the service person to easily grip the first panel.
The outdoor unit of a refrigeration apparatus according to one or more embodiments of the present invention enables the service person to lift the first panel by hooking a finger onto the side end part to detach the first panel from the casing, and thus improves work efficiency.
The outdoor unit of a refrigeration apparatus according to one or more embodiments of the present invention prevents erroneous assembling because the hook part functions for positioning of the first panel.
The outdoor unit of a refrigeration apparatus according to one or more embodiments of the present invention prevents erroneous assembling by having a different arrangement of the hook parts for positioning at the time of attachment, for example, a different space in-between, because there may be erroneous assembling when the different panels have similar forms.
Hereinafter, one or more embodiments of the present invention will be described with reference to the drawings. Note that the following embodiments are specific examples of the present invention, and do not limit a technical scope of the present invention.
(1) Configuration of Refrigeration Apparatus 10
Here, a schematic configuration of a refrigeration apparatus including an outdoor unit will be described before a description of the outdoor unit.
A refrigerant circuit of the refrigeration apparatus 10 mainly connects a compressor 11, a four-way switching valve 12, an outdoor heat exchanger 13, an outdoor expansion valve 14, an indoor expansion valve 15, and an indoor heat exchanger 16 in that order to constitute a vapor compression refrigeration cycle.
The outdoor unit 1 includes the compressor 11, the four-way switching valve 12, the outdoor heat exchanger 13, and the outdoor expansion valve 14, and the indoor unit 3 includes the indoor expansion valve 15 and the indoor heat exchanger 16.
A gas side connection pipe 17a connects the four-way switching valve 12 and the indoor heat exchanger 16, and a liquid side connection pipe 17b connects the outdoor expansion valve 14 and the indoor expansion valve 15.
The connection pipes 17a and 17b are disposed between the outdoor unit 1 and the indoor unit 3. In the outdoor unit 1, an accumulator and other accessories are provided, which are not illustrated.
A gas-side shutoff valve 18 and a liquid-side shutoff valve 19 are provided at terminal ends of the refrigerant circuit inside the outdoor unit 1. The gas-side shutoff valve 18 is disposed on a side of the four-way switching valve 12, and the liquid-side shutoff valve 19 is disposed on a side of the outdoor expansion valve 14. The gas side connection pipe 17a is connected to the gas-side shutoff valve 18, and the liquid side connection pipe 17b is connected to the liquid-side shutoff valve 19. The shutoff valves 18 and 19 are closed when the outdoor unit 1 and the indoor units 3 are installed. After the units 1 and 3 are installed on site and the gas side connection pipe 17a and the liquid side connection pipe 17b are connected to the shutoff valves 18 and 19, respectively, the shutoff valves 18 and 19 are opened.
The refrigerant circuit of the refrigeration apparatus 10 illustrated in
The outdoor unit 1 further includes an outdoor fan 5 that blows air to the outdoor heat exchanger 13 to promote heat exchange between the refrigerant and the air.
(2) Operation of Refrigeration Apparatus 10
Next, an operation of the refrigeration apparatus 10 will be described.
First, during a cooling operation, the four-way switching valve 12 is maintained as illustrated by solid lines in
On the other hand, during a heating operation, the four-way switching valve 12 is maintained as illustrated by broken lines in
Note that both during the cooling operation and during the heating operation, the indoor expansion valve 15 of the indoor unit 3 that is stopped is substantially closed, and little refrigerant flows into the indoor heat exchanger 16 of the indoor unit 3.
(3) Configuration of Outdoor Unit
In
According to one or more embodiments, the outdoor heat exchanger 13 is disposed to be along the right-side panel 25, the left-side panel 26, and the back panel 27.
The front panel 24 includes a first panel 24a and a second panel 24b, is positioned by the casing 2, and then is fixed to the right-side panel 25 and the left-side panel 26 by screw fastening. The detailed configuration of the front panel 24 will be described later.
A region in each of the right-side panel 25 and the left-side panel 26, which is opposed to the outdoor heat exchanger 13, is opened for introducing air.
The back panel 27 is fixed to the right-side panel 25 and the left-side panel 26 by screw fastening. A region in the back panel 27, which is opposed to the outdoor heat exchanger 13, is opened for introducing air.
The upper stay 28 forms a top panel configuration with the right-side panel 25 and the left-side panel 26. The fan 5 is rotatably disposed in an upper part of the casing 2. The fan 5 is surrounded by a bell mouth 5a. A fan cover 28a, which is formed in a latticed shape made of a soft steel wire, is fitted over the upper stay 28 so as to cover the opening. The fan 5 is rotatably driven by a fan motor (not illustrated) disposed below the fan 5.
(4) Detailed Configuration of Front Panel 24
When the front panel 24 is viewed from the front (hereinafter referred to as a front view), as illustrated in
(4-1) First Panel 24a
The first panel 24a configures a right side part in the front view of the front panel 24. The first panel 24a includes a first region 24aa and a second region 24ab. The first region 24aa is positioned above the second region 24ab. Further, a width of the first region 24aa is formed to be wider than a width of the second region 24ab.
In a lower part of the first panel 24a, the part being lower than a height position equivalent to about 56% of the full length L of the first panel 24a from the bottom end of the first panel 24a, a width is reduced so as to gradually approach the width of the second region 24ab as the height position goes down. This part (a shaded part in
The transition region 24ac is inclined in such a manner that a left end approaches a right end in the front view, and thus the width of the transition region 24ac becomes narrower as the height position goes down. Therefore, the left end of the transition region 24ac is an inclined part 241.
The inclined part 241 is positioned in a region lower than a center of the first panel 24a or in a region above the center of the first panel 24a, which is a position a service person can easily lift by hand from below, and functions as a “handle” when the first panel 24a is detached from the casing 2.
Alternatively, a left end surface of the transition region 24ac may be the inclined surface without bending. However, when the service person lifts the first panel 24a by using the inclined part 241 as the “handle”, as the inclined part 241 has a larger surface, a lower pressure is applied to the hand and a sense of pressure is reduced. Therefore, the left end of the transition region 24ac may be bent in the depth direction (panel thickness direction).
Except the inclined part 241, the left end of the first panel 24a is bent in the depth direction as illustrated in
Further, an edge of the inclined part 241 and the first flange 243 are not on the same plane, and a level difference having a height s is provided as illustrated in
(4-2) Second Panel 24b
As illustrated in
Further, as illustrated in
As a result, the first region 24ba occupies an upper part of the second panel 24b, the part being higher than a height position equivalent to about 56% of the full length of the second panel 24b from a bottom end of the second panel 24b.
The right end is inclined downward so as to be away from the left end in the front view from a height position equivalent to about 50% of the full length L of the second panel 24b from the bottom end of the second panel 24b, and a width is thus increased as the height position goes down. This inclined part is referred to as an inclined part 242, which is opposed to the inclined part 241 of the first panel 24a.
The right end of the second panel 24b is bent in the depth direction as illustrated in
(4-3) Overlapping Region Between First Panel 24a and Second Panel 24b
The second panel 24b is attached to the casing 2 before the first panel 24a. When the first panel 24a is attached, the first panel 24a and the second panel 24b overlap in the panel thickness direction in such a manner that the second flange 244 of the second panel 24b is on an inner side and the first flange 243 of the first panel 24a is on a front side. This overlapping region is referred to as an overlapping region 240.
The overlapping region 240 extends vertically downward from an upper end of the front panel 24, descends smoothly obliquely downward to the right on the way, and then extends vertically downward.
As illustrated in
Further, as illustrated in
This gap “s+t” functions as the gap where the service person inserts a finger when using the inclined part 241 as the “handle”. In one or more embodiments, as the panel thickness t is 0.8 mm and the level difference height s is 2 mm, the gap “s+t” is 2.8 mm.
(4-4) Positioning of First Panel 24a and Second Panel 24b
In
In
As a front end in
As a deep end in
A gap between holes 211a of the two first cut-and-raised parts 211 is equal to the gap between the two first claws 201, and a gap between holes 212a of the two second cut-and-raised parts 212 is equal to the gap between the two second claws 202.
Therefore, the two first claws 201 of the first panel 24a are always positioned by the holes 211a of the two first cut-and-raised parts 211 of the casing 2. Similarly, the two second claws 202 of the second panel 24b are always positioned by the holes 212a of the two second cut-and-raised parts 212 of the casing 2.
(5) Positional Relationship Between First Panel 24a and Support 51
As illustrated in
According to one or more embodiments, as viewed from the front panel 24, the support on the front right is referred to as a first support 51, the support on the front left is referred to as a second support 52, the support on the rear right is referred to as a third support 53, and the support on the rear left is referred to as a fourth support 54.
The first support 51 and the fourth support 54 have the same form, the second support 52 and the third support 53 have the same form, and the first support 51 and the second support 52 are linearly symmetric to each other. Hereinafter, the form of the supports will be described using the first support 51 as an example.
In
The fixing plane 51a is opposed to the first panel 24a and fixes the first panel 24a.
The corner plane 51b is adjacent to the fixing plane 51a and crosses the fixing plane 51a at an angle of 45°. As illustrated in
The outer contour plane 51c is adjacent to the corner plane 51b, and forms an angle of 90° with respect to the fixing plane 51a. In one or more embodiments, in the front view in
The first support 51 further includes a horizontal plane 51d that is formed by bending upper ends of the fixing plane 51a, the corner plane 51b, and the outer contour plane 51c inward at an angle of 90°. The fan 5, the bell mouth 5a, and other assemblies that are disposed in the upper part of the casing 2 are mounted on the horizontal plane 51d. A protrusion 51e for positioning the assemblies to be mounted is provided on the horizontal plane 51d.
(6) Positional Relationship Between First Panel 24a and Electric Component Box 6
As illustrated in
(7) Characteristics
(7-1)
In the outdoor unit 1, since the front panel 24 is divided into the first panel 24a and the second panel 24b, the service person for initial setting or maintenance can detach only the first panel 24a from the casing 2 while the second panel 24b remains attached to the original position of the casing 2 when accessing the electric component box 6. As a result, the service person can access the electric component box 6 while only the first panel 24a is detached. Further, a conventional configuration needs detachment of a plurality of panels, increases a total weight though reducing a weight of each panel, and increases the number of panels. The service person is thus required to adopt a complicated detaching method. However, this outdoor unit 1 eliminates the need for such a complicated detaching method, reduces operation time, and improves work efficiency.
(7-2)
As the inclined part 241 that faces obliquely downward is provided near the center of the first panel 24a on the left end in the front view, the service person can lift the first panel 24a by hooking a finger onto the inclined part 241 to detach the first panel 24a from the casing 2. Work efficiency is thus improved.
(7-3)
When detaching the first panel 24a from the casing 2, the service person can lift the first panel 24a by inserting a finger into the gap “s+t” where the first panel 24a and the second panel 24b do not overlap. Work efficiency is thus improved.
(7-4)
The side end 247 of the first panel 24a and the outer contour plane 51c of the first support 51 are disposed on the same plane, and so the service person can grip the side end 247 of the first panel 24a. It is thus easy to detach the first panel 24a from the casing 2. Note that the side end 247 of the first panel 24a and the outer contour plane 51c of the first support 51 do not need to be disposed on the same plane, but the side end 247 may be disposed outside the outer contour plane 51c.
(7-5)
Since the gap for hooking a finger onto the end surface of the side end 247 of the first panel 24a is secured between the side end 247 of the first panel 24a and the first support 51, the service person can insert a finger into the gap when detaching the first panel 24a from the casing 2, and can easily grip the side end 247 of the first panel 24a.
(7-6)
The two first claws 201 of the first panel 24a and the two first cut-and-raised parts 211 of the casing 2 function for positioning the first panel 24a with respect to the casing 2. This prevents erroneous assembling.
(8) Modifications
(8-1) First Modification
As illustrated in the middle column of
The full length of the auxiliary panel 24d in the height direction is substantially 30% of that of the first panel 24a. A lower part of the auxiliary panel 24d is open to expose the outdoor heat exchanger 13′.
The service person can grip the right end of the first panel 24a at a lower part of the first panel 24a with respect to the auxiliary panel 24d by right hand, and grip the inclined part 241 of the first panel 24a by left hand, for an access to the electric component box 6, to detach the first panel 24a from the casing 2.
(8-2) Second Modification
As illustrated in the right column of
As the first panel 24a is disposed on the right in the front view, nothing prevents a grip to the right end of the first panel 24a. Therefore, the service person can detach the first panel 24a from the casing 2 by gripping the right end of the first panel 24a by right hand regardless of a height position and gripping the inclined part 241 of the first panel 24a by left hand to access the electric component box 6.
In addition, in a case where the first panel 24a, the second panel 24b, and the third panel 24c are detached from the casing 2, in order to reattach the first panel 24a, the second panel 24b, and the third panel 24c to the casing 2, the first panel 24a is positioned by the two first claws 201 of the first panel 24a and the holes 211a of the two first cut-and-raised parts 211 of the casing 2, which are disposed differently from other panels as illustrated in
The service person can access the electric component box only by detaching the first panel, which is part of the front panel. The present invention reduces workload of the service person, and is generally useful for the outdoor unit.
Although the disclosure has been described with respect to only a limited number of embodiments, those skilled in the art, having benefit of this disclosure, will appreciate that various other embodiments may be devised without departing from the scope of the present invention. Accordingly, the scope of the invention should be limited only by the attached claims.
Number | Date | Country | Kind |
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2017-148427 | Jul 2017 | JP | national |
Filing Document | Filing Date | Country | Kind |
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PCT/JP2018/027714 | 7/24/2018 | WO | 00 |