JP6610691B2 - Heat source unit - Google Patents

Description

  The present invention relates to a heat source unit, and more particularly, to a heat source unit having a corrugated bottom frame and installation legs.

  Conventionally, there is an air conditioner configured by connecting a heat source unit and a utilization unit by piping. As a heat source unit constituting such an air conditioner, there is a heat source unit having a corrugated bottom frame and a mounting leg as shown in Patent Document 1 (Japanese Patent Laid-Open No. 2011-158137). Specifically, the bottom frame is a corrugated member in which peaks and valleys extending in the left-right direction are formed. The installation legs support the left end and the right end of the bottom frame from below.

  In the heat source unit, in order to improve the drainage performance of the bottom frame, a large number of openings as drainage channels are formed in the bottom frame. However, if a large number of openings are formed in the bottom frame, the strength of the bottom frame may be reduced. On the other hand, it is conceivable to employ a corrugated bottom frame having a high strength like the heat source unit of Patent Document 1 described above. Accordingly, the drainage performance can be improved by further increasing the opening while allowing the lowering of the strength of the bottom frame.

  However, the corrugated bottom frame is formed with peaks and valleys, and tends to collect water, and there is a possibility that the decrease in the strength of the bottom frame may be unacceptable by increasing the number of openings. .

  For this reason, even when a corrugated bottom frame is employed, it is required to provide a drainage channel while suppressing a decrease in strength as much as possible.

  The subject of this invention is aiming at coexistence with the maintenance of the intensity | strength of a bottom frame, and the improvement of drainage performance in the heat-source unit which has a corrugated bottom frame and an installation leg.

The heat source unit according to the first and second aspects has a bottom frame and a mounting leg. The bottom frame is a corrugated member in which peaks and valleys extending in the front-rear direction or the left-right direction are formed. The mounting leg is a support part that supports the valley part of the supported end part, which is the end part on the side where the peak part and the valley part of the bottom frame can be seen, and the support frame part that is located outside the supported end part and is located above the support part. And a wall portion extending to the wall. And the drainage channel for flowing the water adhering on the peak part of a to-be-supported edge part to a support part is formed above the support part of an installation leg here. In addition, here, the drainage channel is an opening formed in a portion of the peak portion of the supported end portion that faces the support portion. Further, here, the support portion is in contact with the valley portion of the supported end portion, or the installation leg further includes a fixed portion that is fixed to the installation surface below the support portion.

  Here, in the bottom frame, since the trough is supported by the support portion of the installation leg, the drainage channel is provided in the peak portion of the supported end portion, which is high in strength. Both maintenance of strength and improvement of drainage performance can be achieved.

In addition, here, since the drainage channel is an opening, there is a concern that the strength of the bottom frame may be reduced. As described above, of the peak portions of the bottom frame, the valley portions are supported by the support portions of the installation legs. Thus, since the opening as the drainage channel is provided in the peak portion of the supported end portion, which has increased strength, it is possible to achieve both maintenance of the strength of the bottom frame and improvement of drainage performance.

In the heat source unit according to the third aspect , in the heat source unit according to the first or second aspect , the wall portion extends to a position higher than the upper end of the peak portion of the supported end portion.

  Here, it is possible to prevent water adhering to the peak portion of the supported end portion from coming out of the bottom frame from the wall portion.

In the heat source unit according to the fourth aspect , in the heat source unit according to any of the first to third aspects , a downward inclination toward the drainage channel is formed at the supported end.

  Here, the water adhering on the peak part of the supported end part can be guided to the drainage channel, whereby the drainage performance can be further improved.

  As described in the above description, according to the present invention, among the peak portions of the bottom frame, the peak portion of the supported end portion whose strength is increased by the valley portion being supported by the support portion of the installation leg. In addition, by providing the drainage channel, it is possible to achieve both the maintenance of the strength of the bottom frame and the improvement of the drainage performance of the water adhering to the peak portion.

It is a schematic block diagram of the air conditioning apparatus by which the heat source unit concerning one Embodiment of this invention was employ | adopted. It is an external appearance perspective view of a heat source unit. It is a disassembled perspective view of a heat source unit (illustrated excluding refrigerant circuit components). It is a top view (illustrated except a refrigerant circuit component) which shows a bottom frame and an installation leg. It is a perspective view which shows a bottom frame and an installation leg (B section of FIG. 4 is illustrated). It is sectional drawing (II sectional drawing of FIG. 5) which shows a bottom frame and an installation leg. It is a figure which shows the bottom flame | frame and installation leg concerning the modification A, Comprising: It is a figure corresponding to FIG. It is a figure which shows the bottom frame and installation leg concerning the modification C, Comprising: It is a figure corresponding to FIG.

  Hereinafter, an embodiment of a heat source unit according to the present invention and its modification will be described with reference to the drawings. Note that the specific configuration of the heat source unit according to the present invention is not limited to the following embodiments and modifications thereof, and can be changed without departing from the scope of the invention.

(1) Configuration of Air Conditioner FIG. 1 is a schematic configuration diagram of an air conditioner 1 in which a heat source unit 2 according to an embodiment of the present invention is employed.

  The air conditioner 1 is a device capable of cooling and heating a room such as a building by performing a vapor compression refrigeration cycle. The air conditioner 1 is mainly configured by connecting a heat source unit 2 and utilization units 3a and 3b. Here, the heat source unit 2 and the utilization units 3 a and 3 b are connected via a liquid refrigerant communication tube 4 and a gas refrigerant communication tube 5. That is, the vapor compression refrigerant circuit 6 of the air conditioner 1 is configured by connecting the heat source unit 2 and the utilization units 3 a and 3 b via the refrigerant communication tubes 4 and 5.

  The heat source unit 2 is installed outside the building (on the roof of the building, near the wall surface of the building, etc.) and constitutes a part of the refrigerant circuit 6. The heat source unit 2 mainly includes an accumulator 7, a compressor 8, a four-way switching valve 10, a heat source side heat exchanger 11, a heat source side expansion valve 12, a liquid side closing valve 13, and a gas side closing valve 14. And a heat source side fan 15. Each device and the valve are connected by refrigerant pipes 16 to 22.

  The utilization units 3a and 3b are installed indoors (such as a living room or a ceiling space) and constitute a part of the refrigerant circuit 6. The utilization unit 3a mainly includes a utilization side expansion valve 31a, a utilization side heat exchanger 32a, and a utilization side fan 33a. The utilization unit 3b mainly includes a utilization side expansion valve 31b, a utilization side heat exchanger 32b, and a utilization side fan 33b.

  The refrigerant communication pipes 4 and 5 are refrigerant pipes that are constructed on site when the air conditioner 1 is installed at an installation location such as a building. One end of the liquid refrigerant communication tube 4 is connected to the liquid side closing valve 13 of the heat source unit 2, and the other end of the liquid refrigerant communication tube 4 is connected to the liquid side end of the usage side expansion valves 31a and 31b of the usage units 3a and 3b. It is connected. One end of the gas refrigerant communication pipe 5 is connected to the gas side shut-off valve 14 of the heat source unit 2, and the other end of the gas refrigerant communication pipe 5 is the gas side end of the usage side heat exchangers 32a and 32b of the usage units 3a and 3b. It is connected to the.

(2) Configuration of Heat Source Unit FIG. 2 is an external perspective view of the heat source unit 2. FIG. 3 is an exploded perspective view of the heat source unit 2 (illustrated excluding refrigerant circuit components). FIG. 4 is a plan view (illustrated excluding refrigerant circuit components) showing the bottom frame 51 and the installation legs 41. FIG. 5 is a perspective view showing the relationship between the bottom frame 51 and the installation leg 41 (part B in FIG. 4 is exemplified). 6 is a cross-sectional view (a cross-sectional view taken along the line II in FIG. 5) showing the relationship between the bottom frame 51 and the installation leg 41. FIG.

<Overall structure>
The heat source unit 2 is called an upper blow type structure that takes air into the casing 40 from below and blows air out of the casing 40 from above. The heat source unit 2 is mainly composed of a substantially rectangular parallelepiped box-shaped casing 40, a heat source side fan 15, devices 7, 8, 11 such as a compressor and a heat source side heat exchanger, a four-way switching valve, a heat source side expansion valve, and the like. And refrigerant circuit components that constitute a part of the refrigerant circuit 6 including the valves 10, 12 to 14, the refrigerant pipes 16 to 22, and the like. In the following description, “top”, “bottom”, “left”, “right”, “front”, “back”, “front”, and “back” are shown in FIG. 2 unless otherwise specified. The direction when the heat source unit 2 to be viewed is viewed from the front (left oblique front side of the drawing) is meant.

  The casing 40 mainly includes a bottom frame 51 spanned on a pair of installation legs 41 extending in the left-right direction, a column 61 extending vertically from a corner of the bottom frame 51, and a fan module 71 attached to the upper end of the column 61. And a front panel 81.

  The bottom frame 51 forms the bottom surface of the casing 40, and the heat source side heat exchanger 11 is provided on the bottom frame 51. Here, the heat source side heat exchanger 11 is a substantially U-shaped heat exchanger in plan view facing the back surface and both left and right side surfaces of the casing 40, and substantially forms the back surface and both left and right side surfaces of the casing 40. Yes.

  A fan module 71 is provided on the upper side of the heat source side heat exchanger 11, and forms a portion above the front and rear surfaces of the casing 40, and the left and right support columns 61, and the top surface of the casing 40. Yes. Here, the fan module 71 is an assembly in which the heat source side fan 15 and the bell mouth 72 are housed in a substantially rectangular parallelepiped box having an upper surface and a lower surface opened, and a blow grill 73 is provided at the upper surface opening. Yes.

  The front panel 81 is spanned between the support columns 61 on the front surface side, and forms the front surface of the casing 40.

  In the casing 40, refrigerant circuit components other than the heat source side fan 15 and the heat source side heat exchanger 11 (accumulator 7, compressor 8, and refrigerant pipes 16 to 18 are shown in FIG. 2) are also housed. Here, the compressor 8 is a device that compresses the refrigerant, and is provided on the bottom frame 51. The accumulator 7 is a refrigerant container that temporarily stores the refrigerant before being sucked into the compressor 8, and is provided on the bottom frame 51.

<Detailed structure (including structure for improving drainage performance of bottom frame 51)>
The bottom frame 51 is a corrugated member in which a crest 52 and a trough 53 extending in the front-rear direction of the casing 40 are formed. Here, the valley portion 53 is a portion that forms the bottom surface of the bottom frame 51 (here, a portion that forms the lowermost substantially flat surface of the bottom frame 51). The peak portion 52 is a portion protruding upward from the valley portion 53 (here, a portion 52a forming an inclined surface upward from the valley portion 53 and a substantially flat surface positioned above the valley portion 53 connected to the portion 52a). 52b). The bottom frame 51 is bridged on the installation leg 41. The supported end portion 54, which is the end portion (here, the front-rear direction) where the peak portion 52 and the valley portion 53 of the bottom frame 51 can be seen, is supported by the installation leg 41. An outer wall 55 is formed at the end of the bottom frame 51 on the side orthogonal to the supported end 54 (here, the left-right direction). Unlike the end portion of the bottom frame 51 in the left-right direction, the supported end portion 54 is not formed with an outer wall portion, and the shape of the bottom frame 51 is simplified.

  The installation leg 41 is a substantially C-shaped member in side view extending in the left-right direction of the casing 40. The installation leg 41 mainly includes a fixed portion 42 fixed to the installation surface, a rising portion 43 extending upward from one end portion in the front-rear direction of the fixed portion 42, and a front-rear direction from the upper end portion of the rising portion 43. And a support portion 44 extending horizontally toward the other side. The support portion 44 supports the valley portion 53 of the supported end portion 54 from below. The installation leg 41 has a wall portion 45 extending upward from the other end portion of the support portion 44 in the front-rear direction. The wall portion 45 is located outside the supported end portion 54. That is, in the case of the installation leg 41 arranged on the front surface side of the casing 40, the wall portion 45 is located on the front side of the supported end portion 54, and the case of the installation leg 41 arranged on the rear surface side of the casing 40. The wall 45 is located on the back side of the supported end 54. And the wall part 45 of the installation leg 41 functions as an outer wall part of the edge part of the front-back direction of the bottom frame 51. As shown in FIG. That is, here, the shape of the bottom frame 51 is simplified, and the wall portion 45 of the installation leg 41 has the same function as the outer wall portion 55 at the end portion in the left-right direction of the bottom frame 51.

  In such a corrugated bottom frame 51, the ridges 52 and the valleys 53 are formed, so that water tends to accumulate. For this reason, first, a large number of openings 56 are formed in the valley portion 53 where water is most likely to accumulate so that water adhering to the valley portion 53 can be discharged. However, in the bottom frame 51, since water adheres also on the peak part 52, it is necessary to consider discharge of the water attached on the peak part 52. On the other hand, if a large number of openings are formed in the peak portion 52 as in the case of the valley portion 53, there is a possibility that the opening is excessively increased and the strength of the bottom frame 51 cannot be lowered. For this reason, in the heat-source unit 2 which employ | adopted the corrugated bottom frame 51, it is requested | required that a drainage channel be provided, suppressing a strength fall as much as possible.

  Therefore, here, a drainage channel 57 is formed above the support portion 44 of the installation leg 41 to allow water adhering on the peak portion 52 of the supported end portion 54 to flow to the support portion 44. Specifically, a gap C is formed between the peak portion 52 of the supported end portion 54 and the wall portion 45 of the installation leg 41. Here, the support portion 44 contacts and supports the valley portion 53 of the supported end portion 54 from below, but a space is formed between the supported end portion 54 and the mountain portion 52 in the vertical direction. Since this space communicates with the gap C, the gap C can function as the drainage channel 57. Further, the gap C is secured by 2 mm or more. Further, the gap C is formed not only between the peak portion 52 and the wall portion 45 of the support end portion 54 but also between the valley portion 53 and the wall portion 45 of the support end portion 54.

  By adopting such a structure, the heat source unit 2 can achieve both the maintenance of the strength of the bottom frame 51 and the improvement of the drainage performance. Here, the supported end portion 54 of the bottom frame 51 is supported by the support portion 44 of the installation leg 41 so that the strength is increased. For this reason, even if the drainage channel 57 is formed, the strength reduction of the bottom frame 51 can be suppressed as much as possible. That is, here, since the drainage channel 57 is provided in the supported end portion 54 that is supported by the support portion 44 of the installation leg 41 in the peak portion 52 of the bottom frame 51, Both the maintenance of the strength of the bottom frame 51 and the improvement of the drainage performance can be achieved. Further, the water guided to the support portion 44 through the drainage channel 57 falls below the bottom frame 51 through the space between the support portion 44 and the peak portion 52 of the support end portion 54, so that the heat source unit 2 It is difficult to flow out.

  Further, here, the strength of the bottom frame 51 can be reliably maintained as compared with the case where a drainage channel is provided by forming an opening in the peak portion 52 of the supported end portion 54 (see a modification example described later). can do. Further, here, since the gap C as the drainage channel 57 is also formed in the valley portion 53 adjacent to the peak portion 52 of the supported end portion 54, only the water adhering to the peak portion 52 of the supported end portion 54. In addition, the water adhering to the valley portion 53 of the supported end portion 54 can also flow to the support portion 54, and the drainage performance can be further improved. Moreover, since the gap C as the drainage channel is set to 2 mm or more here, the water adhering on the peak portion 52 of the supported end portion 54 or the valley portion 53 adjacent to the peak portion 52 of the supported end portion 54. The water adhering to the top can be reliably flowed to the support portion 44.

  Here, the wall portion 45 includes a contact wall portion 48 that contacts the supported end portion 54 and a non-contact wall portion 49 that does not contact the supported end portion 54. Specifically, the abutting wall portion 48 is formed by a part of the wall portion 45 projecting toward the supported end portion 54 side of the bottom frame 51. The gap C is formed between the supported end portion 54 and the non-contacting wall portion 49 by the contact wall portion 48 being in contact with the supported end portion 54. Thereby, here, the gap C can be reliably formed between the peak portion 52 of the supported end portion 54 and the wall portion 45 by the contact wall portion 48.

  Here, the wall portion 45 extends to a position higher than the upper end of the peak portion 52 of the supported end portion 54 (here, the portion 52b forming a substantially flat surface). Thereby, here, it is possible to prevent water adhering to the peak portion 52 of the supported end portion 54 from coming out of the bottom frame 51 from the wall portion 45.

(3) Modification <A>
In the above embodiment, as shown in FIG. 7, a downward inclination 58 toward the drainage channel 57 may be formed in the supported end portion 54. In this case, the water adhering on the peak portion 52 of the supported end portion 54 can be guided to the drainage channel 57, and the drainage performance can be further improved.

<B>
In the above embodiment and modification A, the wall portion 45 of the installation leg 41 is contacted with the abutting wall portion 48 that abuts the supported end portion 54 of the bottom frame 51 and the non-abutting wall that does not abut against the supported end portion 54. In the configuration having the portion 49, a part of the wall portion 45 is projected to the supported end portion 54 side, but is not limited thereto. Although not shown here, a part of the supported end portion 54 may protrude toward the wall portion 45 side. Even in this case, since the protruding portion of the supported end portion 54 of the bottom frame 51 abuts a part of the wall portion 45 of the installation leg 41, the contact wall portion 48 is formed. The portion 45 can be configured to include a contact wall portion 48 that contacts the supported end portion 54 of the bottom frame 51 and a non-contact wall portion 49 that does not contact the supported end portion 54.

<C>
In the embodiment and the modified examples A and B, the gap C formed between the peak portion 52 of the supported end portion 54 and the wall portion 45 of the installation leg 41 is used as the drainage channel 57, but is not limited thereto. It is not a thing. For example, as shown in FIG. 8, the drainage channel 57 may be an opening formed in a portion of the peak portion 52 of the supported end portion 54 that faces the support portion 44. In this case, since the drainage channel 57 is an opening, there is a concern that the strength of the bottom frame 51 may be reduced compared to the case where the gap C of the above embodiment is the drainage channel 57. However, an opening as a drainage channel 57 is provided in the supported end portion 54 that has a high strength by being supported by the support portion 44 of the installation leg 41 in the peak portion 52 of the bottom frame 51. It is possible to achieve both the maintenance of the strength of the bottom frame 51 and the improvement of the drainage performance. Here, unlike the above embodiment, it is not necessary to form the gap C. Therefore, the supported end portion 54 of the bottom frame 51 may be brought into contact with the wall portion 45 of the installation leg 41. Moreover, the opening as the drainage channel 57 may be a notch formed in the edge portion of the supported end portion 54 instead of the through hole. Further, in FIG. 8, the opening as the drainage channel 57 is formed in the portion 52 b that forms a substantially flat surface of the peak portion 52, but the present invention is not limited to this. 52 may be formed in the portion 52a forming the inclined surface 52, or may be formed in both the portion 52a forming the inclined surface of the peak portion 52 and the portion 52b forming the substantially flat surface.

<D>
In the embodiment and the modifications A to C, the drainage channels 57 are formed on both sides of the bottom frame 51 in the front-rear direction, but the drainage channels 57 may be formed only on one side of the bottom frame 51 in the front-rear direction. For example, the drainage channel 57 may be formed only on the back side of the bottom frame 51 where a large amount of water is likely to adhere to the bottom frame 51 by providing the heat source side heat exchanger 11.

<E>
In the said embodiment and modification AD, although the peak part 52 of the bottom frame 51 is formed of the part 52a which makes an inclined surface, and the part 52b which makes a substantially flat surface, it is not limited to this, You may form by the part which makes a substantially vertical surface, and the part which makes a substantially flat surface. Moreover, although the peak part 52 and the trough part 53 of the bottom frame 51 are formed so that it may extend in the front-back direction of the casing 40 here, it is not limited to this, As shown in patent document 1, the peak part 52 is formed. And the trough part 53 may be formed so that the left-right direction of the casing 40 may be covered. Here, only one bottom frame 51 is provided, but the bottom frame 51 may be divided into two as in Patent Document 1.

  The present invention is widely applicable to a heat source unit having a corrugated bottom frame and mounting legs.

2 heat source unit 41 installation leg 44 support part 45 wall part 48 contact wall part 49 non-contact wall part 51 bottom frame 52 peak part 53 valley part 54 supported end part 57 drainage channel (gap, opening)
58 tilt

JP 2011-158137 A

Claims (4)

A corrugated bottom frame (51) in which peaks (52) and valleys (53) extending in the front-rear direction or the left-right direction are formed;
A support portion (44) that supports the valley portion of the supported end portion (54) that is an end portion on the side where the peak portion and the valley portion of the bottom frame can be seen, and a position outside the supported end portion A mounting leg (41) having a wall (45) extending upward from the support part;
With
Above the support portion of the installation leg, a drainage channel (57) is formed for flowing water adhering to the peak portion of the supported end portion to the support portion ,
The drainage channel is an opening formed in a portion of the peak portion of the supported end portion that opposes the support portion,
The support portion is in contact with the valley portion of the supported end portion,
Heat source unit (2). A corrugated bottom frame (51) in which peaks (52) and valleys (53) extending in the front-rear direction or the left-right direction are formed;
A support portion (44) that supports the valley portion of the supported end portion (54) that is an end portion on the side where the peak portion and the valley portion of the bottom frame can be seen, and a position outside the supported end portion A mounting leg (41) having a wall (45) extending upward from the support part;
With
Above the support portion of the installation leg, a drainage channel (57) is formed for flowing water adhering to the peak portion of the supported end portion to the support portion ,
The drainage channel is an opening formed in a portion of the peak portion of the supported end portion that opposes the support portion,
The installation leg further includes a fixed portion (42) fixed to the installation surface below the support portion.
Heat source unit (2). The wall extends to a position higher than the upper end of the peak of the supported end.
The heat source unit according to claim 1 or 2 . The supported end is formed with a downward slope (58) toward the drainage channel,
The heat source unit according to any one of claims 1 to 3 .

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