JP2017110843A - Outdoor equipment of multiple air conditioning system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a piece of outdoor equipment of a multiple air conditioning system capable of improving the performance of the multiple air conditioning system and of easily changing the air conditioning capacity while improving the maintainability by improving the accessibility for an electronic substrate and other members in a room of equipment.SOLUTION: A piece of outdoor equipment 1 comprises: an enclosure 2 partitioned into an upper part as a heat exchanger chamber 2A and a lower part as a room of equipment 2B; a heat exchanger 3 installed along the peripheral surface of the heat exchanger chamber 2A; a cooling fan 5 installed on the top face of the enclosure 2; a plurality of electronic substrates 7A, 7B, and 7C plane-configured to face the front opening part of the equipment room 2B; a compressor 8 for compressing refrigerant juxtaposed on the front opening part side of the room of equipment 2B with these substrates; and an optional component installation space provided on the back side of the electronic substrates 7A, 7B, and 7C and the compressor 8 for accommodating a component group with low maintenance frequency. The electronic substrates 7A, 7B, and 7C are mounted on a substrate holding member 14 supported by a strength member 12.SELECTED DRAWING: Figure 4

Description

  The present invention relates to an outdoor unit of a multi air conditioning system.

As disclosed in Patent Document 1, an outdoor unit of a multi-air conditioning system installed on a rooftop of a building has a heat exchanger chamber that houses a heat exchanger in an upper part of a casing that forms an outer shell thereof. A machine room for accommodating devices such as a compressor and a plurality of electronic boards (control board, inverter board, noise filter board, etc.) is formed in the lower part.
In addition, a cooling fan is installed on the upper surface of the housing. When this cooling fan is activated, outside air passes through the heat exchanger and is sucked into the heat exchanger chamber and is discharged from the cooling fan to the outside. As a result, the heat exchanger exchanges heat with the outside air.

  Conventionally, a plurality of electronic boards accommodated in the machine room are accommodated in a manner in which their component mounting surfaces are oriented in the vertical direction and stacked in the thickness direction. That is, when the inspection lid in front of the machine room is opened, only the end surfaces of a plurality of electronic substrates or the component mounting surface of the foremost electronic substrate can be seen. And it was a machine room layout in which one or a plurality of compressors are installed adjacent to a unit in which these electronic substrates are stacked.

JP 2005-127578 A

  However, as described above, when the plurality of electronic boards accommodated in the machine room are arranged so that the component mounting surfaces thereof are stacked in the thickness direction with the component mounting surface being oriented in the vertical direction, In order to access the electronic board disposed on the front side, the front electronic board must be taken out. In addition, the component mounting surfaces of a plurality of electronic boards cannot be accessed simultaneously, and the maintainability is poor.

  By the way, when changing the air conditioning capacity of an outdoor unit, the capacity or the number of compressors will be changed, but the capacity of the heat exchanger needs to be changed accordingly. Therefore, it is necessary to make various components different, resulting in an increase in manufacturing cost.

  In addition, when the air conditioning capacity of the outdoor unit is increased, the installation area of the outdoor unit becomes large.Therefore, the change is made in a narrow place where other devices are arranged close to each other like the roof of a building. There was a problem that it was difficult.

  The present invention has been made in view of such circumstances, and improves the ease of maintenance by improving the accessibility to the electronic board and other members in the machine room, and improves the performance of the multi-air conditioning system. It is an object of the present invention to provide an outdoor unit of a multi-air conditioning system that can easily change the air conditioning capacity.

In order to solve the above problems, the present invention employs the following means.
That is, the outdoor unit of the multi air-conditioning system according to the present invention includes a casing in which an upper part is partitioned into a heat exchanger room and a lower part in a machine room, and a heat exchanger installed along the peripheral surface of the heat exchanger room A cooling fan installed on the upper surface of the housing, a plurality of electronic boards arranged in a plane facing the front opening of the machine room, and the front opening of the machine room side by side with the electronic board And a compressor for compressor compression installed on the side, and an optional component installation space for housing a group of components with low maintenance frequency provided on the back side of the electronic board and the compressor.

  According to the outdoor unit configured as described above, a plurality of electronic boards are arranged in a plane facing the front opening of the machine room, and the compressor is also installed along the electronic board on the front opening side of the machine room. If the front opening of the machine room is opened, all the electronic boards and the compressor can be directly accessed from the front. As a result, the accessibility to the electronic board and the compressor, which are the most frequently accessed components, is improved, and the maintainability of the outdoor unit can be greatly improved.

  In addition, since the parts that are not frequently maintained are accommodated in the optional parts installation space provided on the back side of the electronic board or compressor, there is no obstacle during the maintenance of the electronic board or compressor. The maintainability of the outdoor unit can be improved.

  In the above configuration, the plurality of electronic substrates are attached to a single substrate holding member, and the substrate holding member is supported at least part of its weight by a strength member erected in the front opening of the machine room. It is good.

  In this way, a plurality of electronic boards are attached to the board holding member, and the board holding member is supported by the strength member installed in the front opening of the machine room, so that it is originally provided in the machine room. The strength member can be used as a support member for the substrate holding member, and a plurality of electronic substrates can be supported without complicating the structure.

  The said structure WHEREIN: It is good also as a structure by which the inverter board | substrate contained in the said several electronic substrate is arrange | positioned at the said compressor side. Thus, by arrange | positioning an inverter board | substrate to the compressor side, an inverter board | substrate can be brought close to a compressor, generation | occurrence | production of noise can be suppressed, and the performance of a multi air conditioning system can be improved.

  The said structure WHEREIN: It is good also as a structure which can be rotated outside the said machine room by using the said intensity | strength member in which the said board | substrate holding member extends to a perpendicular direction as a rotation support member. If it does in this way, the substrate holding member which supports a plurality of electronic substrates will open and close in the shape of a door in the front opening of a machine room. For this reason, by rotating the substrate holding member to the outside and opening it, maintenance of the parts group in the back of the electronic substrate can be performed without disconnecting the connection of the electronic substrate. Can be improved.

  The said structure WHEREIN: It is good also as a structure by which only the said heat exchanger and the said cooling fan are provided in the said heat exchanger chamber. In this way, the outside air drawn through the heat exchanger and sucked into the heat exchanger chamber by the operation of the cooling fan is discharged from the cooling fan to the outside without being disturbed by other members. For this reason, the heat exchange efficiency in a heat exchanger can be improved and the performance of a multi air conditioning system can be improved.

The said structure WHEREIN: It is good also as a structure which makes the said heat exchanger room separable with respect to the said machine room, and can replace | exchange the said heat exchanger room and the said heat exchanger to a thing with a different height dimension.
As a result, the capacity or number of compressors can be changed, and the air conditioning capacity of the outdoor unit can be easily changed by simply changing the heat exchanger chamber and heat exchanger of the housing to ones with large heights. Therefore, an increase in manufacturing cost associated with a change in air conditioning capability can be minimized.
In addition, since there is no dimensional change on the machine room side in the housing, the installation area of the outdoor unit does not change even if the air conditioning capacity is changed as described above. For this reason, it is possible to easily change (particularly increase) the air conditioning capacity even in a narrow place such as the rooftop of a building.

  As described above, according to the outdoor unit of the multi-air conditioning system according to the present invention, the accessibility to the electronic board and other members in the machine room is improved to improve the maintainability, and the performance of the multi-air conditioning system is improved. In addition, the air conditioning capacity can be easily changed.

It is a front view of the outdoor unit concerning a 1st embodiment of the present invention. It is a top view of the outdoor unit by the II arrow of FIG. It is a cross-sectional view of the outdoor unit along the line III-III in FIG. It is a longitudinal cross-sectional view of the outdoor unit along the IV-IV line of FIG. It is a cross-sectional view of the outdoor unit showing a state in which the substrate holding member is rotated outward. It is a longitudinal cross-sectional view of the outdoor unit which concerns on 2nd Embodiment of this invention. It is a cross-sectional view of the outdoor unit along the VII-VII line of FIG.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[First Embodiment]
1 is a front view of the outdoor unit according to the first embodiment of the present invention, FIG. 2 is a plan view taken along arrow II in FIG. 1, and FIG. 3 is a cross-sectional view of the outdoor unit along line III-III in FIG. FIG. The outdoor unit 1 is used in a multi-air conditioning system used for air conditioning of a building or the like, that is, an air conditioning system in which a plurality of indoor units (not shown) are connected to one outdoor unit.

  A housing 2 that forms an outer shell of the outdoor unit 1 includes a heat exchanger chamber 2A that constitutes an upper portion thereof, and a machine chamber 2B that constitutes a lower portion thereof. The heat exchanger chamber 2A is separable from the machine chamber 2B, and can be replaced with one having a different height as will be described later. A pair of heat exchangers 3 are accommodated in the heat exchanger chamber 2A. These heat exchangers 3 are L-shaped in a plan view (see FIG. 2), and these two L-shaped heat exchangers 3 are combined in a rectangular shape to form four circumferences of the heat exchanger chamber 2A. Along the plane.

  For example, two cooling fans 5 are installed on the upper surface of the housing 2 (heat exchanger chamber 2A). These cooling fans 5 include a bell mouth 5a formed on the upper surface of the housing 2, and a fan blade 5b that is driven by a motor (not shown) and rotates inside the bell mouth 5a.

  As described above, only the heat exchanger 3 and the cooling fan 5 are provided in the heat exchanger chamber 2A, and no other devices are arranged. On the other hand, inside the machine room 2B, a plurality of electronic boards such as a control board 7A, an inverter board 7B, a noise filter board 7C, etc., a single compressor 8 for compressing refrigerant, a four-way valve and a check valve (not shown) Various types of air conditioner components such as an expansion valve, an oil separator, a receiver, and a gas-liquid separator are housed.

  The machine room 2B is provided with inspection lids 2L and 2R that can be opened and closed on the front surface thereof. As shown in FIG. 3, the inspection lids 2L and 2R are of a double swing type or a detachable type that is fastened with a bolt or the like. The electronic boards 7A, 7B, and 7C are arranged in a planar manner facing the front opening of the machine room 2B that is the back side of the inspection cover 2L on the left side, for example (the right side may be provided).

  The compressor 8 is installed facing the front opening of the machine room 2B on the back side of the inspection lid 2R on the left side, for example (or on the left side), and is mounted on the electronic boards 7A, 7B, and 7C. They are arranged side by side. In this embodiment, the compressor 8 is installed so as to be adjacent to the electronic boards 7A, 7B, 7C. However, a space may be opened between the electronic boards 7A, 7B, 7C and the compressor 8.

  Optional component installation spaces 10L and 10R are formed on the back side of the electronic boards 7A, 7B, and 7C and the compressor 8, respectively. These optional parts installation spaces 10L and 10R accommodate parts that require less maintenance than the electronic boards 7A, 7B, and 7C and the compressor 8, replacement parts (spare parts), tools, and inspection tools. Is done.

  As shown in FIGS. 3 to 5, for example, a prismatic center support member 12 (strength member) extending in the vertical direction is installed in the center of the front opening of the machine room 2 </ b> B. The center support member 12 supports the weight of the heat exchanger chamber 2A together with a partition wall 12a that bisects the peripheral wall of the machine chamber 2B and the interior of the machine chamber 2B.

  As described above, the plurality of electronic substrates 7A, 7B, 7C arranged in a plane facing the front opening of the machine room 2B are fixed or detachably attached to the substrate holding member 14 formed in a box shape, for example. ing. Here, the inverter board 7B is disposed on the compressor 8 side. The substrate holding member 14 holding the electronic substrates 7A, 7B, and 7C is supported by the center support member 12 at least a part of its weight.

  Specifically, for example, as shown in FIG. 5, one vertical side of the substrate holding member 14 is pivotally attached to the center support member 12 by a hinge 15. Therefore, the substrate holding member 14 is rotatably supported outside the machine room 2B with the center support member 12 as a rotation support member. The free end side of the substrate holding member 14 is detachably fixed to the wall portion of the machine room 2B by an engagement / disengagement portion (not shown), and the weight on the free end side of the substrate holding member 14 is locked by the engagement / disengagement portion when locked. Has come to be supported. The rotation angle of the substrate holding member 14 is 90 ° or more, preferably close to 180 °, so that the optional component installation space 10L is fully opened.

  For this reason, as shown in FIG. 5, when the inspection lid 2L of the machine room 2B is opened (or removed), the board holding member 14 is rotated outward (front side) to freely enter the optional component installation space 10L. Can be accessed. Instead of rotating the substrate holding member 14 with respect to the center support member 12, the substrate holding member 14 may be supported so as to be removable from the center support member 12 as a whole.

  In the outdoor unit 1 configured as described above, when the compressor 8 is operated and the refrigerant is compressed, the cooling fan 5 is operated, and the outside air is converted into a heat exchanger as indicated by an arrow A in FIG. 3 is sucked into the heat exchanger chamber 2A and discharged from the cooling fan 5 (bell mouth 5a) to the outside. As a result, the heat exchanger 3 exchanges heat with the outside air, and the compressed refrigerant flowing inside the heat exchanger 3 condenses or evaporates.

  In the outdoor unit 1, a plurality of electronic boards 7A, 7B, and 7C are arranged in a plane facing the front opening of the machine room 2B, and the compressor 8 is also aligned with the electronic boards 7A, 7B, and 7C in the machine room 2B. It is installed on the front opening side of the. For this reason, if the inspection lids 2L, 2R at the front opening of the machine room 2B are opened, all the electronic boards 7A, 7B, 7C and the compressor 8 can be directly accessed from the front. Thereby, the accessibility to the electronic boards 7A, 7B, 7C and the compressor 8 having the highest access frequency is improved, and thereby the maintainability of the outdoor unit 1 can be improved.

  In the outdoor unit 1, a plurality of electronic boards 7A, 7B, and 7C are attached to the board holding member 14, and the board support member 14 is installed at the center portion of the front opening of the machine room 2B. It was set as the structure supported by. Thereby, the center support member 12 originally provided in the machine room 2B can be used as a support member for the substrate holding member 14, and the plurality of electronic substrates 7A, 7B, and 7C can be supported without complicating the structure. . In addition, since it is not necessary to form the substrate holding member 14 firmly, the substrate holding member 14 can be formed in a lightweight and simple manner. The substrate holding member 14 may be a simple board or the like.

  Further, in the outdoor unit 1, the substrate holding member 14 can be turned to the outside of the machine room 2B using the center support member 12 (hinge 15) as a turning support member. In this way, the substrate holding member 14 supporting the plurality of electronic substrates 7A, 7B, 7C can be opened and closed in a door shape at the front opening of the machine room 2B. For this reason, by rotating the substrate holding member 14 to the outside, the connection between the electronic substrates 7A, 7B, and 7C is cut off, and the optional component installation space 10L in the back of the electronic substrates 7A, 7B, and 7C is formed. Maintenance of the arranged parts group can be performed, and the maintainability of the outdoor unit 1 can also be improved in this respect.

  Further, in the outdoor unit 1, the inverter board 7 </ b> B is disposed on the board holding member 14 at a position on the compressor 8 side. Thereby, the inverter board 7B can be brought close to the compressor 8 to suppress the generation of noise, and the performance of the multi-air conditioning system can be improved.

  Furthermore, this outdoor unit 1 has a configuration in which only the heat exchanger 3 and the cooling fan 5 are provided in the heat exchanger chamber 2A. Therefore, when the cooling fan 5 is operated, the outside air that passes through the heat exchanger 3 and is sucked into the heat exchanger chamber 2A can be smoothly discharged from the cooling fan 5 without being disturbed by other members. It is discharged outside. For this reason, the heat exchange efficiency in the heat exchanger 3 can be improved and the performance of a multi air conditioning system can be improved.

[Second Embodiment]
FIG. 6 is a longitudinal sectional view of an outdoor unit showing a second embodiment of the present invention, and FIG. 7 is a transverse sectional view of the outdoor unit along the line VII-VII in FIG. This outdoor unit 21 is the outdoor unit according to the first embodiment in that two compressors 8A and 8B are provided and that the height of the heat exchanger chamber 2A and the height of the heat exchanger 3 are different. It is different from 1 and matches in other points. For this reason, the same code | symbol is attached | subjected to each part of the same structure, and the overlapping description is abbreviate | omitted.

  As with the outdoor unit 1 of the first embodiment, the outdoor unit 21 is configured such that the heat exchanger chamber 2A can be separated from the machine chamber 2B, the height dimension H1 of the heat exchanger chamber 2A, and the heat exchanger 3 is set to be larger than the outdoor unit 1 of the first embodiment. As described above, the two compressors 8A and 8B are provided, and the heat exchanger chamber 2A and the heat exchanger 3 of the housing 2 are simply changed to ones having large height dimensions H1 and H2, respectively. The air conditioning capability of the outdoor unit 21 can be easily increased.

  In that case, since the machine room 2B and other components do not need to be changed, an increase in manufacturing cost accompanying a change in air conditioning capability can be minimized. Further, the outdoor unit 1 of the first embodiment can be upgraded to the outdoor unit 21 of the second embodiment. Instead of providing the two compressors 8A and 8B, the capacity of the one compressor 8 may be increased.

  In addition, since there is no dimension change on the machine room 2B side in the housing 2, the installation area of the outdoor unit 21 does not change from the installation area of the outdoor unit 1 of the first embodiment even if the air conditioning capacity is changed as described above. For this reason, it is possible to easily change (particularly increase) the air conditioning capacity even in a narrow place such as the rooftop of a building.

  As described above, according to the outdoor units 1 and 21 of the multi-air conditioning system according to the present embodiment, the accessibility to the electronic boards 7A, 7B, and 7C and other members in the machine room 2B is improved and the maintainability is improved. In addition, the performance of the multi-air conditioning system can be improved and the air conditioning capacity can be easily changed.

  It should be noted that the present invention is not limited to the configuration of the above-described embodiment, and can be appropriately changed or improved. Embodiments with such changes and improvements are also included in the scope of the right of the present invention. And For example, the shape of the housing 2 (heat exchanger room 2A, machine room 2B), the distribution of the sizes of the respective parts, and the like are not limited to those of the above-described embodiment.

Further, the number of the cooling fans 5 and the relative positional relationship between the electronic boards 7A, 7B, 7C and the compressor 8 are not limited to those of the above embodiment. For example, the left-right positional relationship between the electronic substrates 7A, 7B, 7C and the compressor 8 is reversed, a compressor is disposed between the plurality of electronic substrates, or an electronic substrate is disposed between the plurality of compressors. May be.
Further, the partition wall 12a may be omitted and the optional component installation spaces 10L and 10R may be integrated, or a plurality of center support members 12 and partition walls 12a may be provided.

1,21 Outdoor unit 2 of multi air conditioning system 2 Housing 2A Heat exchanger room 2B Machine room 3 Heat exchanger 5 Cooling fans 7A, 7B, 7C Electronic board (7B is an inverter board)
8, 8A, 8B Compressor 10L, 10R Optional parts installation space 12 Center support member (strength member)
14 Substrate holding member 15 Hinge H1, H2 Heat exchanger chamber and heat exchanger height

Claims (6)

A case where the upper part is a heat exchanger room and the lower part is a machine room;
A heat exchanger installed along the circumferential surface of the heat exchanger chamber;
A cooling fan installed on the upper surface of the housing;
A plurality of electronic boards arranged in a plane facing the front opening of the machine room;
A compressor for compressing refrigerant installed on the front opening side of the machine room side by side with the electronic substrate;
An optional component installation space that is provided on the back side of the electronic substrate and the compressor and accommodates a component group with a low maintenance frequency;
An outdoor unit for a multi-air conditioning system.   The plurality of electronic substrates are attached to one substrate holding member, and the substrate holding member is supported at least part of its weight by a strength member installed in the front opening of the machine room. The outdoor unit of the described multi-air conditioning system.   The outdoor unit of the multi air-conditioning system according to claim 1 or 2, wherein inverter boards included in the plurality of electronic boards are arranged on the compressor side.   The outdoor unit of a multi air conditioning system according to claim 2 or 3, wherein the substrate holding member is rotatable to the outside of the machine room using the strength member extending in the vertical direction as a rotation support member.   The outdoor unit of the multi air conditioning system according to any one of claims 1 to 4, wherein only the heat exchanger and the cooling fan are provided in the heat exchanger chamber.   The multi-heater according to any one of claims 1 to 5, wherein the heat exchanger chamber is separable from the machine room, and the heat exchanger chamber and the heat exchanger can be replaced with ones having different heights. Air conditioner outdoor unit.

Images