JP2012215305A - Outdoor unit for air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an outdoor unit of an air conditioner in which a maintenance space at the front surface side of the casing and the mounting space when conveying an outside unit can be efficiently used even though accessory part structure is arranged in the casing.SOLUTION: The outdoor unit 1 of the air conditioner has the casing 2 having air suction ports 3 in a back face 2B, and side faces 2A, 2C respectively, having an air blowing out port 6 in an upper face, and having a front face opening 30 in a front face; a heat source side heat exchanger 4 of a refrigerant circuit arranged along the air suction ports 3 in the casing 2, a fan 6 arranged in the air blowing out opening 5 in the casing 2, and an electric part box 8 for housing a control part arranged in the front face opening 30 in the casing 2, the accessory part structure 9 attached to the outdoor unit 1 is arranged in a back position of the electric part box 8 in the casing 2, for example the accessory part structure 9 is arranged on the cover plate 20 covering the refrigerant circuit part.

Description

The present invention relates to an outdoor unit of an air conditioner, and relates to a technique that enables attachment / detachment and maintenance of, for example, a structure as an optional accessory provided behind the electrical component box.

In an outdoor unit of an air conditioner installed in a building or a commercial facility, a heat source side heat exchanger is disposed on the back side or side surface in a vertically placed casing, and a fan is further disposed on the top surface. The front of this outdoor unit is a front opening that allows maintenance, and the front panel can be attached and removed. When the front panel is removed, an electrical component box arranged in the front opening appears. Accessories such as optional parts that are added to the case of the outdoor unit are either placed separately or together with mounting brackets in front of the electrical component box with the front panel removed using the maintenance space in front of the case. Had been placed. However, if the accessory structure is arranged using the front maintenance space in this way, the front maintenance space is hindered.

In addition, when the accessory structure is disposed on the front surface of the outdoor unit casing as described above, the loading space during transportation of the outdoor unit is reduced, and the loading efficiency in the truck is deteriorated. And there also exists a problem that an external appearance worsens from a design viewpoint because an accessory structure protrudes in the front of an outdoor unit as mentioned above. Furthermore, when the accessory structure is disposed on the front surface of the outdoor unit as described above, the center of gravity of the outdoor unit is biased toward the front. For this reason, it is necessary to adjust the position of the center of gravity when transporting with a forklift to the front, and care must be taken in transporting work. Since the accessory structure as described above is relatively heavy (about 20 kg), when performing maintenance on the electrical component box, the accessory structure is temporarily removed from the electrical component box and removed. Maintenance had to be performed after the component structure was temporarily placed in the maintenance space at the lower front of the housing.

Also, since the electrical component box is installed so as to close the front opening for maintenance, the electrical component box must be moved when performing maintenance on parts placed behind the electrical component box in the housing. I had to. As an aspect of moving the electrical component box as described above, for example, as described in Patent Document 1, the electrical component box is opened and closed via a hinge mechanism such as a rotary hinge provided on the side surface of the electrical component box. What is made is known. According to Patent Document 1, service access to the inside of the housing is facilitated by turning the electrical component box through the cantilever hinge.

JP 2010-121859 A

However, since the rotating hinge of the electrical component box described in Patent Document 1 is composed of a plurality of parts, there are many joining parts of each part, and forgetting screwing of joining parts, disconnection of joining parts, and damage are reduced. There was a need. In addition, since the number of parts is large, which increases the cost, it is necessary to reduce the number of parts. Further, since the hinge mechanism is mounted on the electrical component box, it is necessary to fit the heavy electrical component box (about 20 kg) into the hinge receiving portion on the housing side. For this reason, it is necessary to eliminate unstable mounting work when fitting and to prevent bending of the hinge portions on the housing side and the electrical component box side.

  The present invention has been made in order to solve the above-described problems, and a first object is to provide a maintenance space on the front side of the casing and when an outdoor unit is transported even if an accessory structure is provided in the casing. It is to obtain an outdoor unit of an air conditioner that can effectively use the loading space. In addition, a second object of the present invention is to obtain an outdoor unit of an air conditioner in which the center of gravity of the outdoor unit does not change greatly in both cases when the accessory structure is deployed in the housing and when it is not deployed. . A third object of the present invention is to obtain an outdoor unit of an air conditioner that can easily maintain an electrical component box even if an accessory structure is provided in the housing.

An outdoor unit of an air conditioner according to the present invention includes a housing having an air suction port on a side surface including the rear surface, an air outlet on the upper surface and a front opening on the front surface, and the air suction port in the housing. An air conditioner comprising a heat source side heat exchanger of a deployed refrigerant circuit, a fan disposed in an air outlet in the housing, and an electrical component box for accommodating control components disposed in a front opening in the housing The outdoor unit of the machine is characterized in that an accessory structure attached to the outdoor machine is disposed behind the electrical component box in the housing.

The outdoor unit of the air conditioner according to the present invention is provided with an accessory structure attached to the outdoor unit at a position behind the electrical component box in the casing, so that a maintenance space in front of the casing is an accessory part. It is not attacked by structures. Accordingly, it is possible to effectively use the maintenance space in front of the housing. Further, even when the accessory part structure is transported in a state of being attached to the casing, the outer dimensions of the casing can be kept in the same dimensions as when the accessory part structure is not attached. Therefore, it is possible to effectively use the transport space when transporting the housing. In particular, if the accessory structure is placed in the center of the plane behind the electrical component box in the housing, the center of gravity of the housing is hardly affected by the presence or absence of the accessory structure. The effect of becoming.

It is a perspective view which shows the outdoor unit of the air conditioner which concerns on Embodiment 1 of this invention. It is a front view which shows the state which removed the front panel of the said outdoor unit. It is a perspective view which shows the state which opened the electrical component box of the said outdoor unit. It is a top view which shows the state which removed the top plate and fan which have the air blower outlet of the said outdoor unit. It is a perspective view which shows the electrical component box of the outdoor unit which concerns on Embodiment 2 of this invention. It is a partial expansion perspective view which shows the upper hook part of the electrical component box of the said outdoor unit. It is a partial expansion perspective view which shows the hook part of the lower side of the electrical component box of the said outdoor unit. It is a fragmentary top view which shows the attachment state of the electrical component box and side panel of the said outdoor unit. It is a partial top view which shows the state which swirled and opened the electrical component box of the said outdoor unit. It is a fragmentary perspective view which shows the state which removed the front panel of the said outdoor unit, the electrical component box, and the flame | frame. The vertical hole of the side panel of the said outdoor unit is shown, (a) is a partial expansion perspective view, (b) is the AA arrow directional cross section in (a). It is a partial expansion perspective view which shows the insertion state of the vertically long hole and hook part of the side panel of the said outdoor unit. It is a fragmentary perspective view which shows the state which attached the stopper which controls turning of the electrical component box of the said outdoor unit. It is a partial expansion perspective view which shows the rocking | fluctuation front end side of the electrical component box of the state opened in the said outdoor unit. It is a perspective view which shows the back surface of the electrical component box of the state opened in the outdoor unit which concerns on Embodiment 3 of this invention. It is a perspective view which shows the state which gave wiring to the back surface of the flame | frame M of the said outdoor unit. It is a perspective view which shows the state which gave the cover member to the wiring of the back surface of the flame | frame M of the said outdoor unit.

Embodiment 1 FIG.
1 is a perspective view showing an outdoor unit of an air conditioner according to Embodiment 1 of the present invention, FIG. 2 is a front view showing a state in which a front panel of the outdoor unit is removed, and FIG. 3 is an electrical component of the outdoor unit. FIG. 4 is a plan view showing a state in which a top plate having an air outlet of the outdoor unit and a fan are removed.
1 to 4, an outdoor unit 1 of an air conditioner according to this embodiment includes a large casing 2 that is vertically placed. In the case 2, air suction ports 3 for taking air into the case 2 are formed on the left and right side surfaces 2 </ b> A, 2 </ b> C and the back surface 2 </ b> B. Inside the housing 2, a heat source side heat exchanger 4 is disposed along the air inlet 3. An air outlet 6 is formed on the upper surface of the housing 2, and a fan 5 is provided in the housing 2 at a position directly below the air outlet 6. By driving the fan 5, the air sucked into the housing 2 from the air suction port 3 passes through the heat source side heat exchanger 4, exchanges heat with the refrigerant, passes through the fan 5, and is exhausted from the air outlet 6. It has come to be. The front surface of the housing 2 is a front opening 30. An opening edge 31 that surrounds the upper, lower, left, and right sides of the front opening 30 includes front ends of the left and right side panels 21, 21, a front end of the bottom plate of the housing 2, and a front end of the top plate. The front opening 30 is normally sealed with the front panel 7, but is removed during maintenance or the like inside the housing 2.

The front panel 7 is a metal plate that is divided into upper and lower parts with respect to the housing 2, and each of them is screwed so as to be attached to and detached from the housing 2. When the upper front panel 7 is removed, the electrical component box 8 arranged in the vicinity of the front opening 30 in the housing 2 appears (FIGS. 2 and 3). The electrical component box 8 is a box housing a control component 34 such as a control base. A horizontal frame F10 is fixed on the upper side of the electrical component box 8, and a horizontal frame M11 is fixed on the lower side. Then, the mounting screws 12 that pass through the screw holes of the frame F10 are screwed to the upper side portion of the opening edge portion 31, and the mounting screws 13 that pass through the screw holes of the frame M11 are left and right side portions of the opening edge portion 31. The electrical component box 8 is fixed to the housing 2 by being screwed to the housing 2.

An accommodation space for accommodating the accessory structure 9 provided in addition to the outdoor unit 1 is secured at the back position of the electrical component box 8 in the housing 2. This accommodation space is also an upper position of the cover plate 20 made of a sheet metal that covers the refrigerant circuit component 35 installed in the lower part in the housing 2. The accessory structure 9 is installed on the upper surface of the cover plate 20 and fixed with screws or the like. In the present invention, the structure of the accessory structure is arbitrary. In other words, if it is an accessory used in addition to the outdoor unit of the air conditioner (for example, an optional item of a control device sold separately) and has a size that can be accommodated in the housing space secured in the housing 2, Select freely. In the above, an example in which the accessory structure 9 is installed directly on the upper surface of the cover plate 20 has been described. However, it is also possible to deploy the accessory structure 9 at an upper position slightly away from the upper surface of the cover plate 20 using a mounting jig or the like. It is.

  As described above, according to the first embodiment, since the accessory structure 9 is disposed behind the electrical component box 8 in the housing 2, the maintenance space in front of the housing 2 is wasted. Disappears. This leads to effective use of the maintenance space in front of the housing 2. Further, when the accessory structure 9 is transported in a state where it is attached to the housing 2, the outer dimensions of the housing 2 can be accommodated in the same dimensions as those without the accessory structure 9. The transport space for transporting the machine 1 can be used effectively, and the transport efficiency for truck transport is improved.

In addition, since the relatively heavy accessory structure 9 is arranged behind the electrical component box 8, the center of gravity position that has conventionally been at the front of the housing 2 approaches the center of the plane of the housing 2. Therefore, regardless of the presence or absence of the accessory structure 9, the center of gravity can be easily aligned when the housing 2 is transported. In particular, when the accessory structure 9 is disposed in the central portion of the back of the electrical component box 8 in the housing 2, the center of gravity of the outdoor unit 1 is not affected by the presence or absence of the accessory structure 9. The center of gravity of the outdoor unit 1 at the time becomes unnecessary.

And the accessory structure 9 is arrange | positioned on the cover plate 20 which covers refrigerant circuit components 35, such as a compressor, deferred in the lower part in the housing | casing 2, It has arrange | positioned on the upper surface of the housing | casing 2. By driving the fan 5, an effect of cooling the accessory structure 9 attached to the housing 2 can be obtained. In particular, when a structure that causes a temperature rise, such as an electromagnetic coil, is built in the accessory structure 9, a higher effect can be obtained.

Embodiment 2. FIG.
In the first embodiment, the accessory part structure 9 is arranged at the back position of the electrical component box 8 in the housing 2. Next, the electrical component box 8 is horizontally rotated at the time of maintenance or the like. Mode 2 will be described.
5 is a perspective view showing an electrical component box of an outdoor unit according to Embodiment 2 of the present invention, FIG. 6 is a partially enlarged perspective view showing a hook portion on the upper side of the electrical component box of the outdoor unit, and FIG. 7 is the outdoor unit. FIG. 8 is a partially enlarged perspective view showing a hook portion on the lower side of the electrical component box of the machine, FIG. 8 is a partial plan view showing a mounting state of the electrical component box and the side panel of the outdoor unit, and FIG. 9 is an electrical component box of the outdoor unit. It is a fragmentary top view which shows the state which swirled and opened.
In FIG. 5 to FIG. 9, one hinge mechanism 33 is provided at the upper portion of the left side surface portion 32 when viewed from the front of the electrical component box 8, and two hinge mechanisms 33, 33 are provided at the lower portion thereof. ing. These hinge mechanisms 33, 33, 33 are supported so that the electrical component box 8 can be swiveled horizontally with respect to the housing 2. One of these hinge mechanisms 33 is provided at the upper part of one side surface 32 of the electrical component box 8 and two are provided at the lower part.

As one of these hinge mechanisms 33, 33, 33, a hook portion 14 provided at the upper portion of the electrical component box 8 and two hook portions 15, 15 provided at the lower portion of the electrical component box 8 are used. There is. The upper hook portion 14 is attached as a separate attachment component 16 to the left end when viewed from the front of the frame F10 of the electrical component box 8. The lower two hooks 15 and 15 are formed at the left end of the frame M11.

As the other of the hinge mechanisms 33, 33, 33, as shown in FIG. 10, the hinge mechanism 33, 33, 33 is formed above the opening edge 31 that is the front end of the left side panel 21 when viewed from the front of the housing 2. There are one vertically elongated hole 17 and two vertically elongated holes 17 and 17 that are formed slightly above the vertically central part of the opening edge 31 on the left side. The vertical dimension H4 of the upper vertical hole 17 is larger than the vertical dimension H3 of the tip 14A of the hook part 14, and the horizontal width of the vertical hole 17 is set to a dimension that allows the hook part 14 to be inserted and removed freely. . The vertical dimension H4 of the lower vertical holes 17 and 17 is larger than the vertical dimension H3 of the tip 15A of the hook part 15, and the horizontal width of the vertical hole 17 is set to a dimension that allows the hook part 15 to be inserted and removed freely. Has been. The vertically long hole 17 supports the hook portions 14 and 15 passed therethrough so as to be rotatable around the vertical axis V.

As shown in FIG. 11, the longitudinally long hole 17 of the housing 2 can increase the strength when the electrical component 8 rotates by rounding the inner corner portion 22. The chamfer dimension of the corner portion 22 may be arbitrarily selected according to the width dimension of the vertically long hole 17. Moreover, the aspect of increasing the strength when the electrical component box 8 is rotated can also be realized by forming the ribs 23 along the vertically long holes 17. The height H1 and the width W1 of the ribs may be selected arbitrarily according to the sheet metal plate thickness of the side panel 21. The hook dimension H2 of the hook parts 14 and 15 is set to, for example, 7 mm in order to secure strength against the detachment of the hook parts 14 and 15 and the electrical component box 8 falling about the hook parts 14 and 15. The hook dimension H2 may be selected to an arbitrary dimension according to the thickness of the metal plate of the hook portion 14 and the frame M11. The difference between the vertical dimension H4 of the vertically long hole 17 and the vertical dimension H3 of the hook parts 14 and 15 is, for example, 2 to 5 mm, as shown in FIG. 12, so that the hook parts 14 and 15 are not easily detached from the vertically long hole 17. It is a dimension that does not hinder the ease of installation. Further, as shown in FIG. 13, the housing 2 and the electrical component box 8 are connected via a stopper 24 in consideration of the safety of the operator when the electrical component box 8 is turned. The length dimension W2 of the stopper 24 may be arbitrarily selected according to the size of the accessory structure 9.

After the frame M11 is fixed to the housing 2 with screws, the electrical component box 8 is placed on the frame M11 and fixed with the mounting screws 13, and then fixed with the frame F10 and the mounting screws 12. Finally, the separate attachment part 16 is attached to the electrical component box 8 to enable the electrical component box 8 to turn. As a result, the mounting of the electrical component box 8 can be performed separately from the hinge structure parts (frame F10, frame M11), so that the hook portions 14 and 15 can be securely mounted without causing bending. it can.
The electrical component box 8 is released from being fixed to the housing 2 by loosening the mounting screws 12 and the mounting screws 13. The unlocked electrical component box 8 can be turned horizontally via the upper and lower hinge mechanisms 33, 33, 33. As a result, the electrical component box 8 opens clockwise with respect to the housing 2 when viewed from above and closes counterclockwise. The turning angle θ of the electrical component box 8 with respect to the front opening 30 can be arbitrarily selected according to the size of the accessory structure 9.
The hook portion 14 is structured to be fixed to the electrical component box 8 from the front side with a mounting screw, and can be easily mounted and removed. By comprising in this way, the electrical component box 8 can be rotated only when the maintenance of the back of the electrical component box 8 is required.

As shown in FIG. 14, a claw portion 25 is formed on the anti-hinge side (swinging tip side) of the frame M11. Therefore, by inserting the claw portion 25 into the vertically long hole 17A formed in the opening edge portion 31 of the side panel 21, the electrical component box 8 can be self-held before and after turning. Since the electrical component box 8 can be self-held in this manner, the electrical component box 8 can be safely turned even after the mounting screws 12 are removed.
The lower hook portion 15 is provided at two locations to ensure strength against dropping and vibration, but the number of hook portions arranged depends on the sheet metal plate thickness of the frames F10 and M11 and the weight of the electrical component box 8. Any number may be selected.

  As described above, in the second embodiment, the electrical component box 8 is pivotably supported by the hinge mechanism 33 with respect to the housing 2, so that the electrical component box 8 can be pivoted horizontally. This enables maintenance from the front without removing the electrical component box 8 and the accessory structure 9 from the housing 2. Therefore, the maintenance work of the electrical component box 8 and the accessory component structure 9 can be simplified. Furthermore, since the work of transporting the relatively heavy electrical component box 8 and the accessory part structure 9 is not required during the maintenance work, a safe maintenance work is possible.

Embodiment 3 FIG.
In the second embodiment, the electrical component box 8 is supported on the housing 2 through the hinge mechanism 33 so as to be pivotable horizontally. Next, the refrigerant circuit components in the housing and the control in the electrical component box are controlled. A description will be given of a third embodiment in which the generation of noise in the control wiring connecting the parts is prevented.
FIG. 15 is a perspective view showing the back of the electrical component box in the opened state in the outdoor unit according to Embodiment 3 of the present invention, and FIG. 16 is a perspective view showing a state in which wiring is applied to the back of the frame M of the outdoor unit. FIG. 17 is a perspective view showing a state where a cover member is applied to the wiring on the back surface of the frame M of the outdoor unit.
In the outdoor unit, the wiring connecting the refrigerant circuit component 35 in the housing 2 and the control component 34 in the electrical component box 8 includes a power supply wiring 18 and a control wiring 19. Examples of the refrigerant circuit component 35 in the housing 2 include a temperature sensor, a pressure sensor, an inverter device, a fan motor, a solenoid valve, and a four-way switching valve. The power supply wiring 18 and the control wiring 19 are led into the electrical component box 8 in an arrangement in which the rear surface of the frame M11 is run in parallel. The power supply wiring 18 and the control wiring 19 are arranged on the back surface 8 </ b> A of the electrical component box 8 with an interval H <b> 5 that can prevent noise generation in the control wiring 19.

These power supply wiring 18 and control wiring 19 are preferably held by an appropriate number of cable bands 26, 26, and 26 as shown in FIG. In particular, the power supply wiring 18 and the control wiring 19 are held by the cable bands 26 and 26 in the vicinity of the turning center (vertical axis V) of the hook portion 15, respectively. It is possible to increase the durability by suppressing the tension applied to. As described above, the interval H5 between the power supply wiring 18 and the control wiring 19 that run in parallel is, for example, 20 mm in this example, and is an interval that can prevent noise generation in the control wiring 19.

  As described above, in the third embodiment, the power supply wiring 18 and the control wiring 19 that connect the inside of the casing 2 and the electrical component box 8 are separated from each other by the predetermined distance H5, and the rear surface 8A of the electrical component box 8 is provided. Therefore, it is possible to take measures against noise in the control wiring 19. Note that the interval H5 between the power supply wiring 18 and the control wiring 19 depends on the amount of power of the power supply wiring 18 that is a source of noise, and therefore, a suitable value obtained by conducting a noise evaluation test beforehand. It is preferable to select an appropriate dimension value.

On the other hand, as a noise countermeasure method between the power supply wiring 18 and the control wiring 19 running in parallel on the back surface 8A of the electrical component box 8 (in this example, the back surface of the frame M11), as shown in FIG. A structure in which the power supply wiring 18 is covered with a sheet metal cover member 27 and the control wiring 19 is covered with a sheet metal cover member 28 is exemplified. Even with such a structure, it is possible to obtain the same noise countermeasure effect as that of the parallel arrangement with the interval H5 as described above.

DESCRIPTION OF SYMBOLS 1 Outdoor unit, 2 housing | casing, 2A side surface, 2B back surface, 2C side surface, 3 Air inlet port, 4 Heat source side heat exchanger, 5 Fan, 6 Air outlet, 7 Front panel, 8 Electrical component box, 8A back surface, 9 Attached parts structure, 10 frame F, 11 frame M, 12 mounting screw, 13 mounting screw, 14 hook part, 14A tip part, 15 hook part, 15A tip part, 16 separate mounting parts, 17 vertical hole, 18 power supply Wiring, 19 control wiring, 20 cover plate, 21 side panel, 22 corner, 23 rib, 24 stopper, 25 claw, 26 cable band, 27 cover member, 28 cover member, 30 front opening, 31 opening edge , 32 One side surface part, 33 Hinge mechanism, 34 Control part, 35 Refrigerant circuit part, H5 interval, V Vertical axis.

Claims (5)

A housing having an air inlet on the side including the back, an air outlet on the upper surface, and a front opening on the front, and a heat source side heat exchange of the refrigerant circuit arranged along the air inlet in the housing An outdoor unit of an air conditioner comprising: a storage device; a fan disposed at the air outlet in the housing; and an electrical component box for accommodating a control component disposed in the front opening within the housing. An outdoor unit for an air conditioner, wherein an accessory structure attached to the outdoor unit is disposed behind the electrical component box in the housing. The outdoor unit of the air conditioner according to claim 1, further comprising a cover plate that covers a refrigerant circuit component installed at a lower portion in the housing, and an accessory structure is disposed on the cover plate. Machine. The electrical component box is supported so as to be rotatable about a vertical axis through a hinge mechanism provided between one side surface of the electrical component box and an edge of the front opening of the housing. The outdoor unit of the air conditioner according to claim 1 or 2. Two or more hinge mechanisms are provided on one side of the electrical component box at the top and bottom, and a hook portion having a downward tip portion and a size that allows the tip portion of the hook portion to be inserted and removed freely. 4. A vertically long hole that is formed at an opening edge of a front opening and supports the passed hook portion so as to be pivotable about a vertical axis. The outdoor unit of the air conditioner as described in any one of the above. The power supply wiring and the control wiring that connect the refrigerant circuit components in the housing and the control components in the electrical component box are arranged on the back surface of the electrical component box with an interval capable of preventing noise generation in the control wiring. The outdoor unit for an air conditioner according to any one of claims 1 to 4, wherein the outdoor unit is an air conditioner.

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