WO2024014408A1 - Outdoor unit - Google Patents

Abstract

This outdoor unit comprises: a reinforcing frame; a base plate placed on the reinforcing frame; a leg portion which is placed on the base plate and which supports a pressure vessel above the base plate; and a fixing portion for detachably fixing the leg portion to the reinforcing frame, with the base plate interposed therebetween, such that the reinforcing frame, the base plate and the leg portion overlap one another in a vertical direction.

Description

Outdoor unit

The present disclosure relates to an outdoor unit.
This application claims priority to Japanese Patent Application No. 2022-111115 filed in Japan on July 11, 2022, the contents of which are incorporated herein.

Cited Document 1 discloses an outdoor unit used in a heat exchange unit such as an air conditioner. The outdoor unit includes a substrate, a compressor as a pressure vessel placed on the substrate, and a mounting device for attaching the pressure vessel to the substrate. The base plate of this mounting device is formed by bending the outer peripheral edge of a thin plate downward.

Japanese Patent Application Publication No. 7-293447

By the way, in the outdoor unit described in Patent Document 1, the substrate may be bent due to the weight of the pressure vessel. As a result, even if an attempt is made to pull out the pressure vessel horizontally from the substrate during maintenance, for example, the movement of the pressure vessel is obstructed by the flexure of the substrate, and the pressure vessel cannot be pulled out smoothly.

The present disclosure has been made to solve the above problems, and an object of the present disclosure is to provide an outdoor unit from which a pressure vessel can be easily pulled out.

In order to solve the above problems, an outdoor unit according to the present disclosure includes a reinforcing frame, a substrate placed on the reinforcing frame, and a pressure vessel placed on the substrate and supported above the substrate. and a fixing part that removably fixes the leg to the reinforcing frame via the substrate so that the reinforcing frame, the substrate, and the leg overlap in the vertical direction.

According to the outdoor unit of the present disclosure, the pressure vessel can be easily pulled out.

FIG. 1 is a diagram showing a refrigerant circuit according to a first embodiment of the present disclosure. FIG. 2 is a perspective view of a first unit according to a first embodiment of the present disclosure. FIG. 2 is a perspective view showing a support unit on which one of the pressure vessels according to the first embodiment of the present disclosure is placed. FIG. 3 is a perspective view showing the support unit with the reinforcing frame exposed according to the first embodiment of the present disclosure. FIG. 2 is a perspective view showing a support unit with a substrate placed thereon according to the first embodiment of the present disclosure. 6 is a cross-sectional view taken along line VI-VI in FIG. 5. FIG. FIG. 2 is a plan view showing the arrangement of pressure vessels according to the first embodiment of the present disclosure. FIG. 2 is a perspective view showing the support unit before the reinforcing frame is installed according to the first embodiment of the present disclosure. FIG. 7 is a plan view showing the arrangement of pressure vessels according to a second embodiment of the present disclosure.

<First embodiment>
Hereinafter, a refrigeration system 100 including an outdoor unit 1 according to a first embodiment of the present disclosure will be described with reference to FIG. 1. The refrigeration apparatus 100 is used, for example, in a frozen warehouse.
As shown in FIG. 1, the refrigeration system 100 includes an outdoor unit 1 and an indoor unit 2.

The outdoor unit 1 is a condensing unit including a first unit 3 and a second unit 4. The first unit 3 includes a compression section 10, an intermediate heat exchanger 13, a pressure vessel 21, and a control device 6. The second unit 4 includes a capacitor 5. The pressure vessel 21 includes a first pressure vessel 21a and a second pressure vessel 21b. The indoor unit 2 includes an evaporator 7 that functions as a user-side heat exchanger.
The refrigerant circuit of this embodiment includes a compression section 10, an intermediate heat exchanger 13, a pressure vessel 21, a condenser 5, an evaporator 7, piping connecting them, various valves, and the like.

The compression unit 10 compresses the refrigerant and supplies the compressed high temperature and high pressure refrigerant to the refrigerant circuit. For example, CO ₂ is used as the refrigerant. The compression section 10 is configured in a two-stage compression type. The compression section 10 includes a first compressor 11 and a second compressor 12. The first compressor 11 and the second compressor 12 are connected in series. The first compressor 11 is a low stage compression element, and the second compressor 12 is a high stage compression element.

Hereinafter, the flow direction of the refrigerant will be simply referred to as the "flow direction." In the distribution direction, the first compressor 11 is the most upstream, and the upstream in the distribution direction is simply referred to as "upstream", and the downstream in the distribution direction is simply referred to as "downstream".

A first suction pipe 11a and a first discharge pipe 11b are connected to the first compressor 11. A second suction pipe 12a and a second discharge pipe 12b are connected to the second compressor 12. The first discharge pipe 11b and the second suction pipe 12a are connected by an intermediate flow path 14.

An intermediate heat exchanger 13 is provided in the intermediate flow path 14. That is, the intermediate heat exchanger 13 is provided between the first compressor 11 and the second compressor 12 in the flow direction. The intermediate heat exchanger 13 functions as a cooler that cools the refrigerant discharged from the first compressor 11 and supplies it to the second compressor 12.

The refrigerant supplied to the second compressor 12 is discharged through the second discharge pipe 12b. A gas pipe 15 is connected to the second discharge pipe 12b. The high-temperature, high-pressure refrigerant discharged from the second compressor 12 flows through the gas pipe 15 .

The refrigerant flowing through the gas pipe 15 is supplied to the condenser 5 provided in the second unit 4 outside through the first connection pipe 4a. The condenser 5 functions as a gas cooler that condenses the refrigerant. The refrigerant supplied to the condenser 5 is condensed by heat exchange with air sent by a fan (not shown). In the case of CO ₂ refrigerant, it is cooled.

The refrigerant cooled or condensed in the condenser 5 is returned to the gas-liquid two-phase pipe 16 in the first unit 3 through the second connection pipe 4b. The refrigerant flowing through the gas-liquid two-phase pipe 16 is expanded by an unillustrated expansion valve provided in the gas-liquid two-phase pipe 16. In the case of CO ₂ refrigerant, the pressure is reduced to a medium pressure of about 6 MPa, for example. The gas-liquid two-phase refrigerant that has passed through the expansion valve is supplied to the first pressure vessel 21a through the supply pipe 22.

A total of three first pressure vessels 21a are provided. Each first pressure vessel 21a is a medium-pressure receiver that separates a gas-liquid two-phase refrigerant into a gas refrigerant that is a gas-phase refrigerant and a liquid refrigerant that is a liquid-phase refrigerant, and stores the liquid refrigerant. . The gas refrigerant in the first pressure vessel 21a is returned to the second compressor 12 through a gas injection pipe (not shown).

A discharge pipe 23 is connected to each first pressure vessel 21a. Each discharge pipe 23 joins together on the downstream side and discharges liquid refrigerant from each first pressure vessel 21a. A liquid pipe 26 is connected to the discharge pipe 23 .

The liquid refrigerant in each first pressure vessel 21a passes through the discharge pipe 23 and is discharged to the liquid pipe 26. The refrigerant flowing through the liquid pipe 26 is cooled by a subcooling heat exchanger (not shown), and then is supplied to the indoor unit 2 through the third connection pipe 2a.

The indoor unit 2 is a unit cooler that includes an expansion valve 8 and an evaporator 7. The refrigerant supplied to the indoor unit 2 is depressurized by the expansion valve 8 and undergoes heat exchange in the evaporator 7 to cool the object. The refrigerant after heat exchange returns to the outdoor unit 1 through the fourth connection pipe 2b.

The fourth connection pipe 2b is connected to the return pipe 27 inside the outdoor unit 1. The refrigerant flowing through the fourth connection pipe 2b is supplied to the second pressure vessel 21b through the return pipe 27. The second pressure vessel 21b is connected to the first compressor 11 via the first suction pipe 11a. The second pressure vessel 21b is an accumulator that performs gas-liquid separation of the refrigerant supplied to the first compressor 11. The gas refrigerant from which only the gas phase has been extracted in the second pressure vessel 21b is supplied to the suction side of the first compressor 11.

The control device 6 is connected to various sensors, the compression section 10, various valves, etc. (not shown). The control device 6 acquires the measured values from each sensor, adjusts the rotation speed of the compression section 10 and opening/closing of various valves, etc., and operates the outdoor unit 1.

Hereinafter, a support structure for the pressure vessel 21 according to the outdoor unit 1 according to the first embodiment of the present disclosure will be described with reference to FIGS. 2 to 8.
Hereinafter, the vertical up-down direction will be simply referred to as the "up-down direction", one direction out of the countless directions perpendicular to the up-down direction will be referred to as the "front-back direction", and the direction orthogonal to the "up-down direction" and the "front-back direction" will be referred to as the "up-down direction". "left-right direction". In other words, the "front-back direction" and the "left-right direction" are directions that are perpendicular to each other and extend along the horizontal direction.

(Pressure vessel)
As shown in FIG. 2, the pressure vessel 21 includes a body 28 and a head plate 29. The body portion 28 is formed into a cylindrical shape whose axial direction coincides with the up-down direction. The end plates 29 are provided at both ends of the body section 28 in the axial direction. The mirror plate 29 closes the opening of the body 28 in the axial direction. The end plate 29 is formed in a dome shape that projects outward in the axial direction of the body 28 as it becomes spaced apart from the body 28 . The supply pipe 22 described above is connected to the upper end plate 29 of the two end plates 29 .

The first unit 3 of the outdoor unit 1 is provided with three first pressure vessels 21a and one second pressure vessel 21b. Various devices constituting the first unit 3, such as the intermediate heat exchanger 13 (see FIG. 1), are arranged above the first pressure vessel 21a. The first unit 3 includes a support unit 30 that supports the pressure vessel 21.

(Support unit)
The support unit 30 also supports devices other than the pressure vessel 21 among the devices constituting the first unit 3. In FIG. 2, the positional relationship between the pressure vessel 21 and the support unit 30 is illustrated, and the detailed structure of the support unit 30 is omitted. 3 to 8 illustrate a portion of the support unit 30 that supports the first pressure vessel 21a.

The support unit 30 is made of metal material. As shown in FIGS. 3 to 6, the support unit 30 includes a reinforcing frame 40, a substrate 45, legs 46, a fixing part 35, a pan 50, an outer frame 60, a frame connecting part 63, and a reinforcing frame 40. A bracket 65 is provided.

(reinforced frame)
A plurality of reinforcing frames 40 are provided in order to receive the load of the pressure vessel 21 from below. The reinforcing frame 40 is spaced upward from the floor F. The reinforcing frame 40 is made of metal material. The reinforcing frame 40 extends in one direction along the horizontal direction. The reinforcing frame 40 is formed to have a U-shaped cross section that opens downward.

The plurality of reinforcing frames 40 include a plurality of first reinforcing frames 40a and a plurality of second reinforcing frames 40b. The plurality of first reinforcing frames 40a and the plurality of second reinforcing frames 40b are arranged so as to be perpendicular to each other, and as a whole are arranged in a rectangular lattice shape when viewed from the top and bottom. The first reinforcing frame 40a extends in the front-rear direction. The second reinforcing frame 40b extends in the left-right direction.

The reinforcing frame 40 forms a rail portion 41 extending in a linear predetermined direction D from the inside of the substrate 45 to the outer peripheral edge of the substrate 45 in the horizontal direction. Hereinafter, the predetermined direction D in which the rail portion 41 extends may be simply referred to as "predetermined direction D." The predetermined direction D coincides with the length direction of the first reinforcing frame 40a.
The rail portion 41 is provided for two pressure vessels 21 among the three pressure vessels 21.

The reinforcing frame 40 has an upper wall 42 and a side wall 43.
The upper wall 42 is along the horizontal direction. The upper wall 42 is formed with an opening 42a and a mounting hole 42b.
The opening 42a is provided to reduce the weight of the reinforcing frame 40. The opening 42a passes through the upper wall 42 in the vertical direction. The opening 42a is formed in a rectangular shape when viewed from the top and bottom.

The attachment hole 42b is provided for attaching the pressure vessel 21 to the reinforcing frame 40. The attachment hole 42b passes through the upper wall 42 in the vertical direction. Three attachment holes 42b are provided for each pressure vessel 21. Regarding one pressure vessel 21, the three mounting holes 42b are arranged so as to form an isosceles triangle whose height direction coincides with the left-right direction when viewed from the top and bottom. Among these three attachment holes 42b, one attachment hole is provided in the first reinforcing frame 40a, and the remaining two attachment holes 42b are provided in the second reinforcing frame 40b.

The side walls 43 are provided on both side edges of the upper wall 42, respectively. Side wall 43 extends downward from top wall 42 . A notch 43a that opens downward is formed at the lower end of the side wall 43. The cutout portion 43a is provided to reduce the weight of the reinforcing frame 40.

(substrate)
The substrate 45 is arranged on the reinforcing frame 40. The substrate 45 is made of a corrosion-resistant metal material, such as a plated steel plate. The substrate 45 is a rectangular flat plate extending in the horizontal direction. The longitudinal direction of the substrate 45 coincides with the longitudinal direction of the second reinforcing frame 40b. At least the upper surface of the substrate 45 is a flat smooth surface. The substrate 45 has an opening 45a and a mounting hole 45b formed therein.

The opening 45a is provided to reduce the weight of the reinforcing frame 40. The opening 45a is formed in a portion of the substrate 45 that does not overlap with the reinforcing frame 40. The opening 45a passes through the substrate 45 in the vertical direction. The opening 45a is formed in a rectangular shape when viewed from above and below. The longitudinal direction of the opening 45a coincides with the longitudinal direction of the second reinforcing frame 40b.

The attachment hole 45b passes through the substrate 45 in the vertical direction. The mounting hole 45b of the substrate 45 is formed at a position overlapping the mounting hole 42b of the reinforcing frame 40 in the vertical direction.

A folded portion 45c is provided at a portion of the outer peripheral edge of the substrate 45 that is not placed on the reinforcing frame 40. The folded portion 45c is provided to support the substrate 45 from below and improve the strength of the substrate 45. The folded portion 45c is formed integrally with the substrate 45.

(leg)
As shown in FIGS. 3 and 7, a plurality of leg portions 46 are provided to support the pressure vessel 21 from below while floating the pressure vessel 21 from the substrate 45. Three leg portions 46 are provided in each pressure vessel 21. The legs 46 are placed on the substrate 45. The leg portion 46 is arranged on the outside of the pressure vessel 21 when viewed from the top and bottom. That is, the leg portions 46 are arranged so as to protrude outward from the pressure vessel 21 when viewed from the top and bottom. The leg portions 46 of different pressure vessels 21 are arranged so as not to overlap each other in a predetermined direction D in the horizontal direction. This predetermined direction D coincides with the predetermined direction D in which the rail portion 41 described above extends. In one pressure vessel 21 , one of the three legs 46 is arranged on the rail part 41 of the reinforcing frame 40 . The leg portion 46 includes a leg main body 47 and a contact portion 48 .

The leg body 47 extends in the vertical direction. The upper end of the leg main body 47 is connected to the body 28 of the pressure vessel 21.
The contact portion 48 is a portion of the leg portion 46 that comes into contact with the substrate 45. The contact portion 48 is provided at the lower end of the leg body 47. The contact portion 48 is provided so as to extend toward the side opposite to the pressure vessel 21 when viewed from the top and bottom. The contact portion 48 is along the horizontal direction. A mounting hole 48a is formed in the contact portion 48.
The attachment hole 48a passes through the contact portion 48 in the vertical direction. The attachment hole 48a of the contact portion 48 is formed at a position that overlaps the attachment hole 45b of the substrate 45 and the attachment hole 42b of the reinforcing frame 40 in the vertical direction.

(Fixed part)
A plurality of fixing parts 35 are provided to detachably fix the legs 46 to the reinforcing frame 40 via the substrate 45. The reinforcing frame 40, the substrate 45, and the leg portions 46 are fixed by the fixing portion 35 in a vertically overlapping state. The fixing part 35 is a bolt that is inserted through the mounting hole 42b of the reinforcing frame 40, the mounting hole 45b of the board 45, and the mounting hole 48a of the leg part 46. Fasten and fix. The fixing section 35 fixes one of the three leg sections 46 supporting one pressure vessel 21 to the rail section 41 of the reinforcing frame 40 .

(bread)
The pan 50 shown in FIG. 8 is provided to prevent water droplets condensed in the first unit 3 from spreading on the floor surface F. As shown in FIGS. 5 and 6, the pan 50 is provided between the reinforcing frame 40 and the floor F. The pan 50 is a container formed to extend in the horizontal direction and is open upward. The pan 50 is made of a corrosion-resistant metal material such as a plated steel plate. A reinforcing frame 40 is housed inside the pan 50. The pan 50 has a bottom plate 51 and an outer peripheral edge 52.

The bottom plate 51 is a thin plate extending in the horizontal direction. The bottom plate 51 is disposed on the opposite side of the substrate 45 in the vertical direction with the reinforcing frame 40 in between. The lower end of the side wall 43 of the reinforcing frame 40 is fixed to the upper surface of the bottom plate 51 by welding.

A compressor frame 55 is provided on a portion of the upper surface of the bottom plate 51 where the reinforcing frame 40 is not provided. The compressor frame 55 supports a compressor such as the first compressor 11 or the second compressor 12 (see FIG. 1) from below, and prevents the condensed water collected in the pan 50 from coming into contact with the compressor. .

The outer peripheral edge portion 52 is provided on the outer peripheral edge of the bottom plate 51 so as to extend upward. The outer peripheral edge portion 52 is formed by press-molding a sheet metal that is the material of the bottom plate 51. The outer peripheral edge portion 52 is provided so as to surround the bottom plate 51 when viewed from the top and bottom. The outer peripheral edge portion 52 has a side wall 52a and an upper wall 52b.

The side wall 52a extends upward from the outer peripheral edge of the bottom plate 51. The longitudinal ends of the reinforcing frame 40 are fixed to the side wall 52a by welding.
The upper wall 52b extends horizontally outward from the upper end of the side wall 52a. The upper surface of the upper wall 52b is flush with the upper surface of the substrate 45.

(outer frame)
The four outer peripheral frames 60 shown in FIGS. 5 and 6 are provided so as to surround the reinforcing frame 40 from the outside when viewed from the vertical direction (see FIG. 2). The four outer peripheral frames 60 are provided outside the side wall 52a of the outer peripheral edge 52 of the pan 50 when viewed from the top and bottom. Each outer peripheral frame 60 extends in one direction along the horizontal direction. The plurality of outer peripheral frames 60 as a whole form a rectangular frame when viewed from the up and down direction. Among the four outer circumferential frames 60, two relatively long outer circumferential frames 60 extend, and the remaining two relatively short outer circumferential frames 60 extend in the front-rear direction. The cross-sectional shape of each outer peripheral frame 60 is formed in a U-shape that opens on the side opposite to the pan 50 in the horizontal direction. The outer frame 60 has a side wall 61 and an end wall 62.

The side wall 61 extends along the up-down direction. The side wall 61 of the outer peripheral frame 60 is fixed to overlap the side wall 52a of the outer peripheral edge portion 52.
The end walls 62 are provided at both ends of the side wall 61 in the vertical direction. The end wall 62 extends from the side wall in the horizontal direction on the side opposite to the pan 50. End wall 62 extends horizontally. The lower end wall 62 is placed on the floor F.
The above-mentioned outer peripheral frame 60 is indirectly connected to the reinforcing frame 40 via the pan 50.

(Frame connection part)
The frame connecting portion 63 is provided to reinforce the rectangular frame formed by the four outer peripheral frames 60 from the inside. A plurality of frame connecting portions 63 are provided between two relatively long outer circumferential frames 60 among the four outer circumferential frames 60 . The frame connecting portion 63 extends in one direction along the horizontal direction. The frame connecting portion 63 is arranged to be orthogonal to the two relatively long outer peripheral frames 60. Both ends of the frame connecting portion 63 are each fixed to the side walls 61 of the two long outer peripheral frames 60 by welding.

(Reinforcement bracket)
A plurality of reinforcing brackets 65 are provided in order to reinforce the rectangular frame formed by the four outer peripheral frames 60 from the outside. The reinforcing brackets 65 are provided on two relatively long outer frames 60 among the four outer frames 60. The reinforcing bracket 65 connects the upper end wall 62 of the outer peripheral frame 60 to the floor surface F. The reinforcing bracket 65 includes a bracket main body 65a and an end wall 65b.

The bracket main body 65a is a plate-shaped member that extends in the vertical direction. The bracket main body 65a is arranged perpendicularly to the side wall 61 of the outer peripheral frame 60.
The end walls 65b are provided at both ends of the bracket body 65a in the vertical direction. The upper end wall 65b of the reinforcing bracket 65 is fixed to the upper end wall 62 of the outer peripheral frame 60 in a superimposed state from below. The lower end wall 65b of the reinforcing bracket 65 is fixed to the floor F in an overlapping state.

(effect)
In this embodiment, the fixing portion 35 removably fixes the leg portions 46 to the reinforcing frame 40 via the substrate 45 such that the reinforcing frame 40, the substrate 45, and the leg portions 46 overlap in the vertical direction. Thereby, the reinforcing frame 40, the substrate 45, and the leg portions 46 can be fixed in a vertically overlapping state. Therefore, the substrate 45 is supported from directly below by the reinforcing frame 40, and sufficient strength to support the pressure vessel 21 can be ensured. Therefore, it is possible to suppress the substrate 45 from bending under the weight of the pressure vessel 21. Therefore, it is possible to release the fixing by the fixing part 35 and easily pull out the pressure vessel 21.

In this embodiment, the bottom plate 51 of the pan 50 is placed on the opposite side of the substrate 45 in the vertical direction with the reinforcing frame 40 in between. Further, a reinforcing frame 40 is fixed to the bottom plate 51. As a result, the reinforcing frame 40 is sandwiched between the substrate 45 and the bottom plate 51 from above and below, forming a so-called sandwich structure. Therefore, the strength of the reinforcing frame 40 and the substrate 45 that support the pressure vessel 21 can be further improved.

In the present embodiment, in the outdoor unit 1, a reinforcing frame 40 is fixed to the outer peripheral edge 52 of the pan 50. Thereby, the load of the pressure vessel 21 that the reinforcing frame 40 receives can be distributed to the outer peripheral edge portion 52. Therefore, the strength of the reinforcing frame 40 and the substrate 45 that support the pressure vessel 21 can be further improved.

In this embodiment, the top surface of the substrate 45 is flush with the top surface of the outer peripheral edge 52 of the pan 50. Thereby, when the pressure vessel 21 is pulled out from the substrate 45 in the horizontal direction, the pressure vessel 21 can easily slide out. Therefore, the pressure vessel 21 can be easily pulled out from the substrate 45.

In this embodiment, the outer peripheral frame 60 is provided so as to surround the reinforcing frame 40 from the outside when viewed from the top and bottom. The reinforcing frame 40 is directly connected to the outer peripheral frame 60. Thereby, the load of the pressure vessel 21 that the reinforcing frame 40 receives can be distributed to the outer peripheral frame 60. Therefore, the strength of the reinforcing frame 40 and the substrate 45 that support the pressure vessel 21 can be further improved.

In this embodiment, the leg portions 46 of different pressure vessels 21 are arranged so as not to overlap each other in a predetermined direction D in the horizontal direction. This prevents the legs 46 supporting different pressure vessels 21 from coming into contact with each other when the pressure vessels 21 are moved in the horizontal direction from the substrate 45. It becomes easier to put it back.

In this embodiment, the reinforcing frame 40 forms a rail portion 41 extending in a linear predetermined direction D from the inside of the substrate 45 to the outer peripheral edge of the substrate 45 in the horizontal direction. The fixing part 35 fixes the leg part 46 to the rail part 41.
In this case, when moving the pressure vessel 21 horizontally from the substrate 45, by moving the pressure vessel 21 in the predetermined direction D in which the rail portion 41 extends, it is possible to always support the pressure vessel 21 from directly below with the reinforcing frame 40. can. Therefore, the strength of the reinforcing frame 40 and the substrate 45 that support the pressure vessel 21 can be further improved.

In the present embodiment, the reinforcing frame 40 has a U-shaped cross section that opens downward. As a result, the weight of the reinforcing frame 40 is reduced compared to the case where the reinforcing frame 40 is formed into a solid columnar shape, while sufficient strength of the reinforcing frame 40 necessary to support the load of the pressure vessel 21 is ensured. be able to.

In this embodiment, three leg portions 46 are provided in each pressure vessel 21. Thereby, the pressure vessels 21 can be supported more reliably than in the case where the number of legs 46 provided in each pressure vessel 21 is two or less. Furthermore, compared to the case where the number of legs 46 provided in each pressure vessel 21 is four or more, rattling of the legs 46 can be suppressed. Therefore, the stability of the pressure vessel 21 can be improved.

In this embodiment, the substrate 45 is made of a metal material with corrosion resistance, such as a plated steel plate. Thereby, deterioration of the substrate 45 over time can be suppressed. Therefore, the beauty of the support unit 30 can be maintained for a long period of time.

<Second embodiment>
Hereinafter, a support unit 30A according to an outdoor unit 1A according to a second embodiment of the present disclosure will be described with reference to FIG. 9. In the second embodiment, the same components as those in the first embodiment are given the same reference numerals, and detailed explanations are omitted as appropriate. The second embodiment differs from the first embodiment in the shape and dimensions of the substrate 45A and in that it further includes a guide section 70.

(substrate)
As shown in FIG. 9, the substrate 45A is formed wider than the contact portion 48A of the leg portion 46A. That is, when viewed from the top and bottom, the entire contact portion 48A of the leg portion 46A is located on the substrate 45A. Guide portions 70 are formed on the outer peripheral edge of the substrate 45A and on both left and right edges of the opening 45a of the substrate 45A.

(Guide part)
The guide portion 70 is provided to guide the leg portion 46A placed on the substrate 45A so that the leg portion 46A does not deviate from the substrate 45A when the leg portion 46A is moved. The guide portion 70 is provided at the outer peripheral edge of the edge of the substrate 45 . Each guide portion 70 is provided along the lateral direction of the substrate 45A. That is, the guide portion 70 protrudes upward from the substrate 45A and is provided along the leg portion 46A. The guide portion 70 is formed by press-molding a sheet metal that is the material of the substrate 45A.

(effect)
In this embodiment, the substrate 45A is formed wider than the contact portion 48A of the leg portion 46A with the substrate 45A. Thereby, the pressure vessel 21 can be placed in a state where the entire contact portion 48A of the leg portion 46A is located inside the substrate 45A when viewed from the vertical direction. Therefore, the stability of the pressure vessel 21 can be improved.

In this embodiment, a guide portion 70 is provided at the edge of the substrate 45A, protruding upward from the substrate 45A and extending along the leg portion 46A. Thereby, when moving the pressure vessel 21 in the horizontal direction from the substrate 45A, the leg portion 46A moves along the guide portion 70. Therefore, it is possible to suppress the leg portions 46A from deviating from the top of the substrate 45A, so that when the pressure vessel 21 is moved, the pressure vessel 21 can be stably supported.

(Other embodiments)
Although the embodiment of the present disclosure has been described above in detail with reference to the drawings, the specific configuration is not limited to this embodiment, and includes design changes within the scope of the gist of the present disclosure. .
In the above embodiment, the reinforcing frame 40 is formed separately from the pan 50 and is fixed to the pan 50 by welding, but the invention is not limited to this. For example, the reinforcing frame 40 may be formed integrally with the bread 50, and may be formed by press-molding a sheet metal that is the material of the bread 50 when manufacturing the bread 50.

Note that in the above embodiment, the outer peripheral frame 60 is indirectly connected to the reinforcing frame 40 via the pan 50, but the present invention is not limited to this. For example, if the support units 30 and 30A are not provided with the pan 50, the outer peripheral frame 60 may be directly connected to the reinforcing frame 40.

In addition, in the above embodiment, each pressure vessel 21 is provided with three legs 46, 46A, but the present invention is not limited to this, and the number of legs 46, 46A can be changed as appropriate. .

In addition, although the said embodiment demonstrated the case where the pressure vessel 21 is a medium pressure receiver and an accumulator, it is not limited to this. The pressure vessel 21 may be, for example, a compressor. In this case, since the compressor is placed on the reinforcing frame 40, the compressor frame 55 may not be provided.

Note that in the above embodiment, the rail portion 41 is provided for two pressure vessels 21 out of the three pressure vessels 21, but the rail portion 41 is not limited to this. For example, the rail portion 41 may be provided for all pressure vessels 21.

In addition, in the above-mentioned embodiment, the case where only one leg part 46, 46A of three leg parts 46, 46A supporting one pressure vessel 21 is placed on the rail part 41 of the reinforcing frame 40 is explained. However, it is not limited to this. For example, the rail portion 41 may be formed such that all three leg portions 46, 46A that support one pressure vessel 21 are arranged on the rail portion 41. In this case, the fixing part 35 fixes all of the plurality of legs 46 that support one pressure vessel 21 to the rail part 41.

In the above embodiment, the fixing part 35 is a bolt that is inserted into the mounting hole 42b of the reinforcing frame 40, the mounting hole 45b of the board 45, and the mounting hole 48a of the leg part 46. It is not limited to. The fixing portion 35 may be, for example, a pin that is inserted through each of the mounting holes 42b, 45b, and 48a and that fits into each of the mounting holes 42b, 45b, and 48a.

<Additional notes>
The outdoor units 1 and 1A described in each embodiment are understood as follows, for example.

(1) The outdoor units 1, 1A according to the first aspect include a reinforcing frame 40, a substrate 45, 45A placed on the reinforcing frame 40, a pressure vessel placed on the substrate 45, 45A, and a pressure vessel 21 above the substrates 45, 45A, the reinforcing frame 40, the substrates 45, 45A, and the legs 46, 46A overlap in the vertical direction. A fixing portion 35 is provided to detachably fix the leg portions 46, 46A to the reinforcing frame 40 via the fixing portion 35.

Thereby, the reinforcing frame 40, the substrates 45, 45A, and the legs 46, 46A can be fixed in a vertically overlapping state. Therefore, the substrates 45 and 45A are supported from directly below by the reinforcing frame 40, and sufficient strength to support the pressure vessel 21 can be ensured. Therefore, it is possible to suppress the substrates 45, 45A from bending under the weight of the pressure vessel 21. Therefore, it is possible to release the fixing by the fixing part 35 and easily pull out the pressure vessel 21.

(2) The outdoor units 1, 1A of the second aspect are the outdoor units 1, 1A of the first aspect, and are arranged on the opposite side in the vertical direction from the substrates 45, 45A with the reinforcing frame 40 in between. The reinforcing frame 40 may be fixed to a bottom plate 51.

As a result, the reinforcing frame 40 is sandwiched between the substrates 45, 45A and the bottom plate 51 from above and below, forming a so-called sandwich structure. Therefore, the strength of the reinforcing frame 40 and the substrates 45, 45A that support the pressure vessel 21 can be further improved.

(3) The outdoor unit 1, 1A of the third aspect is the outdoor unit 1, 1A of the second aspect, and is provided on the outer peripheral edge of the bottom plate 51 so as to extend upward, and the reinforcing frame 40 is provided on the outer peripheral edge of the bottom plate 51. A fixed outer peripheral edge portion 52 may also be provided.

Thereby, the load of the pressure vessel 21 that the reinforcing frame 40 receives can be distributed to the outer peripheral edge portion 52. Therefore, the strength of the reinforcing frame 40 and the substrates 45, 45A that support the pressure vessel 21 can be further improved.

(4) The outdoor unit 1, 1A of the fourth aspect is the outdoor unit 1, 1A of the third aspect, in which the upper surface of the substrate 45, 45A is flush with the upper surface of the outer peripheral edge portion 52. You can.

This makes it easier for the pressure vessel 21 to slide out when the pressure vessel 21 is pulled out horizontally from the substrates 45, 45A. Therefore, the pressure vessel 21 can be easily pulled out from above the substrates 45, 45A.

(5) The outdoor unit 1, 1A of the fifth aspect is the outdoor unit 1, 1A of any one of the first to fourth aspects, and surrounds the reinforcing frame 40 from the outside when viewed from the vertical direction. The reinforcing frame 40 may be provided with an outer peripheral frame 60 to which the reinforcing frame 40 is connected directly or indirectly.

Thereby, the load of the pressure vessel 21 that the reinforcing frame 40 receives can be distributed to the outer peripheral frame 60. Therefore, the strength of the reinforcing frame 40 and the substrate 45 that support the pressure vessel 21 can be further improved.

(6) The outdoor unit 1, 1A of the sixth aspect is the outdoor unit 1, 1A of any one of the first to fifth aspects, in which a plurality of the pressure vessels 21 are provided, and the leg portions 46 , 46A are provided in each pressure vessel 21 and are arranged so as to protrude outward from the pressure vessel 21 when viewed from the vertical direction, and the leg portions 46, 46A of different pressure vessels 21 are arranged horizontally. They may be arranged so as not to overlap each other in a predetermined direction D among the directions.

This prevents the legs 46 and 46A that support different pressure vessels 21 from coming into contact with each other when the pressure vessels 21 are moved horizontally from above the substrates 45 and 45A. It becomes easy to return it onto the substrates 45, 45A.

(7) The outdoor unit 1, 1A of the seventh aspect is the outdoor unit 1, 1A of any one of the first to sixth aspects, and the reinforcing frame 40 is horizontally connected to the substrate 45, A rail portion 41 is formed that extends in a linear predetermined direction D from the inside of the substrate 45A to the outer peripheral edge of the substrate 45, 45A, and the fixing portion 35 fixes the leg portion 46, 46A to the rail portion 41. You can.

In this case, when moving the pressure vessel 21 horizontally from above the substrates 45, 45A, the pressure vessel 21 is always supported from directly below by the reinforcing frame 40 by moving the pressure vessel 21 in the predetermined direction D in which the rail portion 41 extends. be able to. Therefore, the strength of the reinforcing frame 40 and the substrates 45, 45A that support the pressure vessel 21 can be further improved.

(8) The outdoor unit 1, 1A of the eighth aspect is the outdoor unit 1, 1A of any one of the first to seventh aspects, and the reinforcing frame 40 has a cross-sectional shape of a U opening downward. It may be formed in a letter shape.

As a result, the weight of the reinforcing frame 40 is reduced compared to the case where the reinforcing frame 40 is formed into a solid columnar shape, while sufficient strength of the reinforcing frame 40 necessary to support the load of the pressure vessel 21 is ensured. be able to.

(9) The outdoor unit 1, 1A of the ninth aspect is the outdoor unit 1, 1A of any one of the first to eighth aspects, and each of the pressure vessels 21 has three legs 46. may be provided.

Thereby, the stability of the pressure vessel 21 can be improved.

(10) The outdoor unit 1A of the tenth aspect is the outdoor unit 1A of any one of the first to ninth aspects, and the substrate 45A is a contact portion of the leg portion 46A with the substrate 45A. It may be formed wider than 48A.

Thereby, the stability of the pressure vessel 21 can be improved.

(11) The outdoor unit 1A of the eleventh aspect is the outdoor unit 1A of any one of the first to tenth aspects, in which the legs protrude upward from the base plate 45A at an edge of the base plate 45A. A guide portion 70 may be provided along the portion 46A.

Thereby, when moving the pressure vessel 21 in the horizontal direction from above the substrate 45A, the leg portion 46A moves along the guide portion 70. Therefore, it is possible to prevent the leg portions 46A from deviating from the top of the substrate 45A.

According to the outdoor unit of the present disclosure, the pressure vessel can be easily pulled out.

1,1A...Outdoor unit 2...Indoor unit 2a...Third connection pipe 2b...Fourth connection pipe 3...First unit 4...Second unit 4a...First connection pipe 4b...Second connection pipe 5...Condenser 6...Control Device 7... Evaporator 8... Expansion valve 10... Compression section 11... First compressor 11a... First suction pipe 11b... First discharge pipe 12a... Second suction pipe 12b... Second discharge pipe 12... Second compressor 13... Intermediate heat exchanger 14... Intermediate flow path 15... Gas pipe 16... Gas-liquid two-phase pipe 21... Pressure vessel 21a... First pressure vessel 21b... Second pressure vessel 22... Supply pipe 23... Discharge pipe 26... Liquid pipe 27...Return pipe 28...Body part 29...End plate 30...Support unit 35...Fixed part 40...Reinforcement frame 40a...First reinforcement frame 40b...Second reinforcement frame 41...Rail part 42...Top wall 42a...Opening part 42b ...Mounting hole 43...Side wall 43a... Notch part 45, 45A...Board 45a...Opening part 45b...Mounting hole 45c...Folded part 46, 46A...Legs 47... Leg body 48, 48A...Contact part 48a...Mounting hole 50 ...Bread 51...Bottom plate 52...Outer periphery 52a...Side wall 52b...Top wall 55...Compressor frame 60...Outer periphery frame 61...Side wall 62...End wall 63...Frame connecting part 65...Reinforcement bracket 65a...Bracket body 65b...End Wall 70...Guide part 100...Freezing device D...Predetermined direction F...Floor surface

Claims (11)

1. reinforced frame,
   a substrate placed on the reinforcing frame;
   Legs placed on the substrate and supporting the pressure vessel above the substrate;
   a fixing portion that removably fixes the leg portion to the reinforcing frame via the substrate so that the reinforcing frame, the substrate, and the leg portion overlap in the vertical direction;
   An outdoor unit equipped with
2. The outdoor unit according to claim 1, further comprising a bottom plate that is arranged on the opposite side of the substrate in the vertical direction with the reinforcing frame interposed therebetween, and to which the reinforcing frame is fixed.
3. The outdoor unit according to claim 2, further comprising an outer circumferential edge portion provided on the outer circumferential edge of the bottom plate so as to extend upward and to which the reinforcing frame is fixed.
4. The outdoor unit according to claim 3, wherein the upper surface of the substrate is flush with the upper surface of the outer peripheral edge.
5. The outdoor unit according to any one of claims 1 to 4, further comprising an outer peripheral frame that is provided so as to surround the reinforcing frame from the outside when viewed from above and below, and to which the reinforcing frame is directly or indirectly connected. .
6. A plurality of pressure vessels are provided,
   The leg portion is provided in each pressure vessel and is arranged so as to protrude outward from the pressure vessel when viewed from the top and bottom,
   The outdoor unit according to any one of claims 1 to 4, wherein the legs of the different pressure vessels are arranged so as not to overlap each other in a predetermined horizontal direction.
7. The reinforcing frame forms a rail portion extending in a linear predetermined direction from the inside of the substrate to the outer peripheral edge of the substrate in the horizontal direction,
   The outdoor unit according to any one of claims 1 to 4, wherein the fixing part fixes the leg part to the rail part.
8. The outdoor unit according to any one of claims 1 to 4, wherein the reinforcing frame has a U-shaped cross section that opens downward.
9. The outdoor unit according to any one of claims 1 to 4, wherein each of the pressure vessels is provided with three legs.
10. The outdoor unit according to any one of claims 1 to 4, wherein the substrate is formed wider than a contact portion of the leg portion with the substrate.
11. The outdoor unit according to any one of claims 1 to 4, further comprising a guide portion that protrudes upward from the substrate and is provided along the leg portion at an edge of the substrate.

Images