JP4059062B2 - Engine-driven air conditioning system housing - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a housing of an engine-driven air conditioning system including a compressor and a machine room that houses an engine that drives the compressor.
[0002]
[Prior art]
In the case of a conventional engine-driven air conditioning system, there are four pillars, a rectangular frame-like bottom frame with four corners welded to the bottom of each pillar, and a square-frame-like four in the middle of each pillar. It consists of a middle frame with a corner fixed by welding, and a drain pan that divides the upper heat exchanger chamber fixed to the middle frame and the lower machine chamber, and one pair of left and right of the four horizontal members constituting the middle frame is As a cross-sectional shape having a groove opening upward, there is one in which a drain outlet connected to a drain pipe is provided on the bottom surface of an intermediate portion of the groove (see, for example, Patent Document 1).
[0003]
In addition, the first housing that houses the heat exchanger, the second housing that is disposed below and houses the compressor, and the drain pan that is disposed between the two housings are arranged outside the second housing. There is also a structure in which the support that supports the first housing is made of a hollow material made of an aluminum extrusion material, and the upper end thereof communicates with a drain pan (for example, see Patent Document 2). In this prior art, as shown in FIG. 8, an upward flange portion 2 is formed on the four circumferences of the drain pan 1, and a notch portion 3 is formed at each corner, and rainwater or the like falling on the drain pan 1 is notched portion 3. Are collected in the hollow portion 5 of each column 4 and discharged.
[0004]
In addition, the panel constituting the engine chamber side wall of the engine-driven air conditioner has a double structure consisting of an outer plate and an inner plate, a partition plate is disposed between them, and an air inlet is formed in the outer plate. There is also a type in which combustion air is supplied to the engine through a silencer provided on the inner plate with the air that has entered between the outer plate and the inner plate through the inlet (see, for example, Patent Document 3).
[0005]
[Patent Document 1]
Japanese Utility Model Publication No. 6-38253 (FIGS. 1, 2, and 3).
[0006]
[Patent Document 2]
Japanese Utility Model Publication No. 7-12818 (FIGS. 1, 2, and 3).
[0007]
[Patent Document 3]
Japanese Utility Model Publication 5-21639 (FIGS. 1 and 2).
[0008]
[Problems to be solved by the invention]
The prior art described in Patent Document 1 has a problem that it has a welded structure in order to give the strength of the housing, and becomes a heavy object. In addition, rainwater, etc. that has fallen on the drain pan is discharged through a drain pipe that passes through the machine room from a horizontal member having a cross-sectional shape that forms the left and right inner frames, but since the volume in the machine room is limited, There is a problem that the pipe cannot be taken large in diameter or needs to be bent in the middle, and the drain pipe is closed by foreign matters such as dust and overflows from the bowl-shaped lateral member.
[0009]
Moreover, since the prior art described in Patent Document 2 uses the support column as a hollow material made of an aluminum extrusion material and uses the hollow portion as a drain pipe, the above-described problem is solved, but dead leaves that have fallen on the drain pan 1 or the like Large foreign matters are swept away by the flow of water on the drain pan 1 and gather in the notch portions 3 at each corner. In other words, there is a problem that the drain pan 1 becomes poor and the water overflows from the drain pan 1 during heavy rain.
[0010]
Further, according to the prior art described in Patent Document 3, it is possible to reduce the noise generated from the engine-driven air conditioner by reducing the leakage of intake noise and other noises generated in the engine from the engine room to the outside. In addition, since the panel constituting the side wall of the engine compartment has a double structure and a silencer is provided therein, the volume of the engine compartment is reduced, which makes it difficult to arrange the engine and other equipment provided in the engine compartment. There is a problem.
[0011]
The present invention adds the improvement to the support structure of the upper frame with respect to the support | pillar in which the shelf board which supports a heat exchanger room, the upper frame which supports this, and the hollow part in the housing | casing of an engine drive type | formula air conditioning system were formed. It is an object of the present invention to solve the above-mentioned problem of drainage and to form a noise reduction structure that reduces noise without reducing the volume in the machine room by using the bottom frame of the machine room.
[0012]
[Means for Solving the Problems]
For this purpose, the housing of the engine-driven air conditioning system according to the present invention includes a machine room that houses a compressor and an engine that drives the compressor, and a heat exchanger room that is provided thereon and in which a heat exchanger is installed. In the engine-driven air conditioning system casing, the machine room is fixed to the bottom frame formed by connecting the ends of the pair of first and second horizontal members and to the four corners of the bottom frame. The four struts that rise upward are connected to the ends of each of the pair of first upper horizontal member and second upper horizontal member, and the upper corners of the four columns are fixed to the upper ends of the columns. The heat exchanger chamber is formed on a shelf plate supported on four sides by the upper frame, and at least one of the columns is made of an aluminum extruded material in which a hollow portion is formed over the entire length. At least one of the upper transverse members is formed with a channel The shelf board is made of a ruminium extruded material, and the shelf board is supported by each upper transverse member of the upper frame so that substantially the entire amount of liquid such as rain water that has fallen on the shelf board flows from at least one side edge of the shelf board into the groove. The open end of the groove-shaped portion is attached to the upper end of the support so that liquid such as rainwater flowing from the end enters the hollow of the support.
[0013]
In the case of the engine-driven air conditioning system according to the previous item, the upper horizontal member of the upper frame is formed with a support flange portion extending inwardly from the upper edge of the inner wall portion of the groove portion, and at least one side of the shelf board It is preferable that the edge is supported on the support flange portion, and the portion protruding outward from the support flange portion is bent downward along the inner surface of the channel portion.
[0014]
The heat exchanger of the housing of the engine-driven air conditioning system described in the preceding item 2 is attached at its lower part along at least one side edge of the shelf so as to form at least one side surface of the heat exchanger chamber, The upper horizontal member of the upper frame arranged along the lower portion of the exchanger may have a groove-shaped portion, and a blindfold portion extending above the shelf plate may be formed on the upper edge of the outer wall portion of the groove-shaped portion. preferable.
[0015]
The casing of the engine-driven air conditioning system described in the preceding item 3 is configured by forming at least one of the transverse members forming the bottom frame of the machine room with an aluminum extruded material having a hollow portion formed over the entire length thereof, and an upper side and an upper side thereof. The first suction port and the second suction port that communicate with the outside of the cavity portion are formed at the other locations, and both ends of the cavity portion are closed when connected to the remaining horizontal members of the bottom frame. It is preferable to close with the bottom plate except for the portion provided with the first suction port, and to close the four side surfaces of the machine room between the bottom frame, the support column and the upper frame with the cover plate.
[0018]
Ma The housing of the engine-driven air conditioning system according to the present invention includes a machine room that houses a compressor and an engine that drives the compressor, and a heat exchanger room that is provided on the housing and in which a heat exchanger is installed. In the casing of the engine-driven air conditioning system, the machine room is fixed to the bottom frame formed by connecting the ends of each pair of the first and second horizontal members and the four corners of the bottom frame. It shall consist of four columns that rise upward, and an upper frame that is connected to each end of each pair of first upper horizontal member and second upper horizontal member, and whose four corners are fixed to the upper end of each column. The heat exchanger chamber is formed on a shelf plate whose four sides are supported by the upper frame, at least one of the support columns is formed with a hollow portion, and at least one of the upper horizontal members of the upper frame is A groove-shaped part is formed, and the liquid that has fallen on the shelf board is reduced. Both are supported by the upper lateral members of the upper frame so as to flow down from one side edge into the groove portion, and the open end of the groove portion is the same so that the liquid flowing from this end directly enters the hollow portion of the column. It is characterized by being attached to a column.
[0019]
Operation and effect of the invention
According to the case of the engine-driven air conditioning system according to claim 1 of the present invention, the machine room includes a bottom frame formed by connecting each pair of the first horizontal member and each end of the second horizontal member. The four struts fixed to the four corners of the bottom frame and rising upward are connected to the ends of the pair of the first upper lateral member and the second upper lateral member. The heat exchanger chamber is made of an upper frame fixed to the upper end, and the heat exchanger chamber is formed on a shelf plate supported on the four sides of the upper frame, and at least one of the support columns is an aluminum in which a hollow portion is formed over the entire length. It is made of extruded material, and at least one of the upper horizontal members of the upper frame is made of aluminum extruded material in which a groove-shaped portion is formed, and the shelf board has substantially the entire amount of liquid such as rainwater dropped thereon. Each top of the upper frame so that it flows down from at least one side edge of the shelf into the channel The open end of the channel-shaped part supported by the transverse member is attached to the upper end of the column so that liquid such as rainwater flowing down from this end enters the hollow of the column. Substantially all of the fallen rainwater, etc., flows down from at least one side edge of the shelf into the groove portion of the upper frame, enters the hollow portion of the column from the open end of the groove portion, and then goes outward from the bottom of the column. Discharged. As described above, since rainwater or the like flows down from at least one side edge of the shelf into the groove portion, large foreign matters such as dead leaves that are swept away by the rainwater and the like are dispersed and enter the entire length of the groove portion, and the narrow groove portion Because it is difficult to move, it does not gather in one place and block the flow of rainwater. Therefore, there is no possibility of water overflowing from the groove portion of the upper frame even during heavy rain. In addition, since the support column is a hollow material made of an aluminum extrusion material and the hollow portion is a drain pipe, a straight drain pipe having a large cross-sectional area can be obtained without reducing the volume in the machine room, and the upper horizontal member that forms the upper frame Since the aluminum extrusion material is also used, the casing of the engine-driven air conditioning system can be reduced in weight.
[0020]
A support flange portion extending inwardly from the upper edge of the inner wall portion of the groove portion is formed on the upper horizontal member of the upper frame, and at least one side edge of the shelf board is supported on the support flange portion and the support flange portion According to the engine-driven air conditioning system housing, the part that projects outward from the groove-shaped part is bent downward along the inner surface of the groove-shaped part, and the shelf is supported reliably by the upper frame. Rainwater, etc. that has fallen into the ground will surely flow down into the groove of the upper frame.
[0021]
The heat exchanger has a lower part mounted along at least one side edge of the shelf so as to form at least one side surface of the heat exchanger chamber, and an upper side of the upper frame arranged along the lower part of the heat exchanger. According to the engine-driven air conditioning system casing in which the member has a groove-shaped portion and a blindfold extending above the shelf plate is formed on the upper edge of the outer wall portion of the groove-shaped portion, the appearance is unsightly. Since the lower mounting portion of the heat exchanger is hidden by the blindfold, the appearance of the casing of the engine-driven air conditioning system can be improved.
[0022]
A first suction port which is constituted by an aluminum extruded material in which a hollow portion is formed over the entire length of at least one of the transverse members forming the bottom frame of the machine room and communicates the inside of the hollow portion to the outside at locations other than the upper side and the upper side When the second suction port is formed and connected to the remaining horizontal member of the bottom frame, both ends of the cavity are closed, and the upper side of the bottom frame is closed by the bottom plate except for the portion where the first suction port is provided. According to the case of the engine-driven air conditioning system in which the four sides of the machine room between the bottom frame, the support column and the upper frame are closed by the cover plate, the combustion or cooling air for the engine is secondly drawn from the outside. The air enters the cavity formed in the transverse member forming the bottom frame through the mouth, and is further sucked into the machine room through the first suction port. Since the hollow portion, the first suction port, and the second suction port constitute an expansion silencer, it is possible to reduce the noise such as intake noise, exhaust noise, and mechanical noise generated in the engine from leaking outside from the machine room. Noise generated from the driven air conditioning system can be reduced. This expansion silencer is constituted by a part of the transverse member forming the bottom frame, and does not reduce the volume in the machine room. Therefore, it is difficult to arrange the engine or other equipment provided in the machine room, or Therefore, it is not necessary to enlarge the machine room.
[0025]
Ma Claims of the present invention 5 According to the casing of the engine-driven air conditioning system described in the above, the machine room includes a bottom frame formed by connecting each pair of first and second lateral members, and four corners of the bottom frame. The upper part where the four corners are fixed to the upper end part of each pillar, and the four pillars fixed to the part and rising upward, and the respective ends of the pair of the first upper lateral member and the second upper lateral member are connected. The heat exchanger chamber is formed on a shelf plate whose four sides are supported by the upper frame, and at least one of the support columns is formed with a hollow portion, and each upper horizontal member of the upper frame At least one of the grooves is formed with a groove portion, and the shelf plate is supported by each upper horizontal member of the upper frame so that the liquid dropped on the shelf plate flows into the groove portion from at least one side edge of the shelf plate. The open end of the channel is attached to the strut so that liquid flowing down from this end enters directly into the hollow portion of the strut. As in the first aspect of the present invention, the large foreign matter swept away by the liquid is dispersed and enters the entire length of the groove-shaped portion, and is difficult to move within the narrow groove-shaped portion. They do not collect and obstruct the flow of liquid, so there is no risk of such liquid overflowing from the channel of the upper frame. Further, since the liquid that flows down from the end of the groove-shaped portion directly enters the hollow portion using the column as a hollow material, a straight discharge pipe having a large sectional area can be obtained without reducing the volume in the machine chamber.
[0026]
DETAILED DESCRIPTION OF THE INVENTION
Below, the housing | casing of the engine drive type air-conditioning system by this invention is demonstrated by embodiment shown in FIGS. As shown in FIG. 1, the casing of the engine-driven air conditioning system of this embodiment includes a rectangular machine room A that houses a compressor and an engine that drives the compressor, and an internal space provided on the machine room A. It comprises a heat exchanger chamber B having a cubic shape provided with a heat exchanger.
[0027]
First, the machine room A will be described with reference to FIGS. As shown mainly in FIG. 1, the frame of the machine room A includes a rectangular bottom frame 10, four lower struts (posts) 20 that rise upward with their lower ends fixed to the four corners of the bottom frame 10, and The four corners are formed of a rectangular upper frame 30 fixed to the upper end of each lower column 20. The upper side of the frame is closed by a shelf plate 38 whose periphery is supported by the upper frame 30, the front and rear sides are closed by a first cover plate 26, the left and right sides are closed by a second cover plate 27, and the lower side is a bottom. Closed by a bottom plate 17 provided on the upper side of the frame 10, a substantially sealed machine room A is formed.
[0028]
The bottom frame 10 is formed by connecting the ends of a pair of front and rear first lateral members 11 and a pair of left and right second lateral members 13, and each of the lateral members 11 and 13 is an aluminum extruded material. As shown in FIG. 3, the main body portion of each first lateral member 11 has an E-shaped cross section with an open top, and a vertical flange portion 12 a extending upward is formed on one outer side, and the vertical flange portion A short flange portion 22 extending outward from the base portion of 12a is formed. As shown in FIGS. 1 and 3, two attachment legs 15 are fixed to each of the portions near the both ends of the lower surface of each first lateral member 11 by bolts or the like.
[0029]
Further, as shown mainly in FIG. 4, the main body portion of each second transverse member 13 has a rectangular cross-sectional shape in which a hollow portion 13a is formed over the entire length, and the outer lower edge extends shortly and outwardly, respectively. Flange portions 14a and 14b are formed. As shown in FIGS. 1, 2, and 4, each second lateral member 13 is formed with a slit-like first suction port 13 b formed along the longitudinal direction in a portion near the outer edge of the upper surface, and the lower surface. A slit-like second suction port 13c that is slightly shorter than the first suction port 13b is formed along the longitudinal direction at a portion close to the inner edge of the inner space, and the inside of the cavity portion 13a communicates with the outside by both the suction ports 13b and 13c. Has been. Each of the suction ports 13b and 13c may be divided into a plurality of shapes, or may have a shape other than a slit shape.
[0030]
As shown in FIGS. 1 to 3, both ends of each second transverse member 13 are overlapped on both ends of each first transverse member 11 placed in parallel with each other, and both ends are bolts and nuts 16. , 16a to form a rectangular bottom frame 10. In such a connected state, both ends of the hollow portion 13 a of the second lateral member 13 are closed by the vertical flange portion 12 a of the first lateral member 11. As shown in FIGS. 2 to 4, the bottom plate 17 that closes the lower side of the machine room A is provided and bolted to a portion excluding the first suction port 13 b on the upper side of the bottom frame 10. The cavity 13a, the first suction port 13b, and the second suction port 13c constitute an expansion silencer, and the machine room A sealed through the expansion silencer communicates with the outside.
[0031]
Each of the lower struts 20 is also an aluminum extrusion material, and as shown mainly in FIG. It consists of two flange portions 22. As shown in FIG. 2 and FIG. 3, the lower strut 20 has its inner side surfaces at the lower end portions applied to the corners of the four corners of the bottom frame 10, and each flange portion 22 is connected to the first horizontal member 11 by bolts and nuts 23, 23 a. Are fixed by being fastened to the outer side portions of the vertical flange portion 12a and the second horizontal member 13 and raised upward. In the lower part of the lower support column 20, a part of the flange part 22 and an extension part thereof are notched so that the lower end surface of the hollow part 21 is in contact with the upper surfaces of the lateral flange parts 12 b and 14 b.
[0032]
The upper frame 30 is formed by connecting the ends of a pair of front and rear first upper horizontal members 31 and a pair of left and right second upper horizontal members 34, and each of the upper horizontal members 31 and 34 is an aluminum extruded material. It is. As shown mainly in FIG. 6, the cross-sectional shape of each first upper lateral member 31 includes a first groove portion 32, a short first support flange portion 33 a extending inward from the upper edge of the inner wall portion, The first groove shape comprises a long first connecting flange portion 33b extending inwardly from the vicinity of the bottom of the one groove portion 32 and a first downward flange portion 33c extending downward from the inner wall portion of the first groove portion 32. The upper edge of the outer wall portion of the portion 32 is formed with a blindfold portion 32a that extends upward from the first support flange portion 33a and is bent inward.
[0033]
Further, as shown in FIG. 7, the cross-sectional shape of each of the second upper transverse members 34 includes a second groove portion 35, a second support flange portion 36a, a second connection flange portion 36b, and a second downward flange portion. 36c, which is the same as the first upper horizontal member 31 except that there is no member corresponding to the blindfold 32a. As shown in FIGS. 5 and 6, each of the first upper lateral member 31 and the second upper lateral member 34 placed in parallel with each other has end portions of the first connection flange portion 33b and the second connection flange portion 36b. The rectangular upper frame 30 is formed by overlapping and connecting with bolts and nuts 37 and 37a.
[0034]
As shown in FIGS. 5 and 6, the outer side surfaces of the downward flange portions 33 c and 36 c which are the four corner portions of the upper frame 30 are the inner sides of the flange portions 22 at the distal end portion of the lower support column 20 rising from the four corner portions of the bottom frame 10. The upper frame 30 is attached to the upper end portion of each lower column 20 by being brought into contact with the side surface and tightened by bolts and nuts 24 and 24a. In the upper part of the lower support column 20, a part of the flange part 22 and its extension part are notched so that the upper end surface of the hollow part 21 is brought into contact with the lower surface of each groove-shaped part 32, 35. Further, in this attached state, the opened end portions of the upper lateral members 31 and 34 are positioned immediately above the hollow portion 21 so that rain water or the like flowing from the end portions falls into the hollow portion 21 of the lower support column 20. Yes.
[0035]
As shown in FIGS. 6 and 7, a shelf plate 38 is placed on the support flange portions 33 a and 36 a of the upper frame 30, and is removed from the support flange portions 33 a and 36 a on the front, rear, left and right edges of the shelf plate 38. The protruding portion is bent downward and extends downward along the inner surface of the inner wall portion of each of the groove portions 32 and 35. The upper side of the frame of the machine room A is closed by the shelf plate 38.
[0036]
As shown in FIGS. 2, 3 and 6, the outer edge portion of the first cover plate 26 that closes the front side and the rear side of the frame of the machine room A is a vertical flange portion 12 a of the first horizontal member 11 of the bottom frame 10, A second cover that is in contact with one flange portion 22 of the left and right lower struts 20 and the first downward flange portion 33c of the first upper transverse member 31 of the upper frame 30 and is bolted (not shown) and closed on both the left and right sides. As shown in FIGS. 2, 4, and 7, the outer edge portion of the plate 27 includes the second lateral member 13 of the bottom frame 10, the other flange portion 22 of the front and rear lower struts 20, and the second upper lateral portion of the upper frame 30. A bolt (not shown) is fixed by coming into contact with the second downward flange portion 36c of the member 34.
[0037]
Next, the heat exchanger chamber B will be described with reference to FIGS. 1, 6, and 7. As shown mainly in FIG. 1, the heat exchanger chamber B has four upper struts 40 which are fixed at the four corners of the upper frame 30 of the machine room A and rise upward, and upper end portions of the upper struts 40. The top plate 50 has four corners fixed, heat exchangers 46 are installed on the front and rear sides, and the left and right sides are closed by a third cover plate 47. The top plate 50 is provided with three ventilation holes 52 to which a fan is attached, and a reinforcing member 51 is provided at each peripheral edge.
[0038]
The upper strut 40 is an aluminum extruded material having the same cross-sectional shape as the lower strut 20. As shown in FIG. 6, L-shaped attachment plates 43 are placed on the support flange portions 33 a and 36 a of the upper lateral members 31 and 34 via bolts 44 penetrating the shelf plate 38 on the four corners of the shelf plate 38. The upper support column 40 is erected upward with its lower end fixed to the mounting plate 43 via bolts and nuts 45 and 45a. The lower portion of the upper strut 40 has a flange portion 42 so that at least a part of the lower end of the upper strut 40 abuts at least a part of the upper end of the lower strut 20 and the upper strut 40 is substantially located on the extension of the lower strut 20. Part and its extension are cut away. Further, at the lower part of the hollow part 41 of the upper support column 40, both open ends of the groove-shaped part 32 of each first upper lateral member 31 enter the hollow part 41 and directly above the hollow part 21 of the lower support column 20. A notch 41a (see FIG. 6) is formed so as to reach, and the illustration is omitted, but the same applies to the portion where both ends of the second groove 35 of the second upper transverse member 34 enter the hollow portion 41. A notch is formed.
[0039]
As shown in FIGS. 1 and 6, the heat exchanger 46 is provided so that the lower part thereof is along the front and rear side edges of the shelf 38 so as to form the front side surface and the rear side surface of the heat exchanger chamber B. The lower surface is slightly lifted from the shelf board 38, and both side edges and upper edges are attached so as to be hidden by one flange portion 42 of the left and right upper struts 40 and the front and rear reinforcing members 51. Moreover, the outer edge part of the cover board 47 which closes the both right and left sides of the heat exchanger chamber B is provided with the other flange part 42 of the front and rear upper struts 40 and the left and right reinforcing members 51 of the top board 50 as shown in FIGS. And a bolt (not shown) is fixed, and a slight gap is provided between the lower edge of the cover plate 47 and the shelf plate 38 to drain water from the shelf plate 38 into the second groove 35. It has been.
[0040]
Next, the operation of the above-described embodiment will be described. In a state in which this engine-driven air conditioning system is operated, the fans in the ventilation holes 52 are operated to suck out the air in the heat exchanger chamber B, and as shown by arrows Y1 and Y2 (see FIG. 6). In this way, air passes through the heat exchanger 46 and air in the machine room A is sucked out from a hole (not shown) provided in the shelf 38, so that the machine room A has arrows X1, X2, and X3. As shown, outside air is introduced through an expansion silencer comprising a second suction port 13c, a cavity 13a and a first suction port 13b. At the same time, in the machine room A, the compressor is driven by the engine, and in the case of cooling operation, the compressed high-temperature refrigerant gas is sent to the heat exchanger 46, and this refrigerant gas is caused by the air passing through the heat exchanger 46. It is cooled, condensed and sent to an indoor heat exchanger (not shown). The engine in the machine room A is operated with a part of the outside air introduced through the second suction port 13c, the cavity 13a and the first suction port 13b as combustion air, and is cooled by the remaining air.
[0041]
The engine in the machine room A generates noise such as intake noise, exhaust noise, and machine noise with operation. However, since the machine room A is sealed, it hardly leaks to the outside and the cavity 13a into which outside air is introduced, Since the first suction port 13b and the second suction port 13c also constitute an expansion silencer, the noise in the machine room A is less likely to leak to the outside. Accordingly, noise generated from the engine-driven air conditioning system can be reduced. The expansion silencer is constituted by a part of the second lateral member 13 forming the bottom frame 10 and does not reduce the volume in the machine room A. Arrangement becomes difficult, or it is not necessary to enlarge the machine room A in order to solve this problem. If a sound absorbing material is provided in the hollow portion 13a of the second lateral member 13, the silencing effect by the expansion silencer is further increased.
[0042]
In the above-described embodiment, the both end portions of each second horizontal member 13 in which the cavity portion 13a, the first suction port 13b, and the second suction port 13c are formed are overlapped on both end portions of each first horizontal member 11. Both ends are connected by bolts and nuts 16 and 16a, and if the first lateral member 11 having such a lower side is installed on the installation surface G, a second intake port for introducing outside air into the machine room A Since the lower surface of the second horizontal member 13 on which the 13c is formed is arranged away from the installation surface G, the outside air is drawn from the second suction port 13c even if the bottom frame 10 of the machine room A is installed on the installation surface G as it is. Can be inhaled. However, the present invention is not limited to this, and the second suction port 13c may be formed in the lowermost surface of the bottom frame 10, and in this case, the bottom frame 10 is installed on the installation surface via a pedestal. The bottom surface of the bottom frame 10 may be separated from the installation surface G by being installed on G.
[0043]
Further, in the above-described embodiment, the cross-sectional shape of the second lateral member 13 in which the cavity portion 13a, the first suction port 13b, and the second suction port 13c are formed is rectangular, and in this way, the bottom frame 10 is formed. Therefore, the coupling structure between the first lateral member 11 and the second lateral member 13 can be simplified. In the above-described embodiment, the second suction port 13c is formed on the bottom surface of the second lateral member 13, but the second suction port 13c is formed on the inner side surface of the second lateral member 13 as indicated by reference numeral 13c1. In this case, the bottom frame 10 can be installed so that the bottom surface of the second lateral member 13 directly contacts the installation surface G. The second suction port 13c can be formed on the outer surface of the second transverse member 13, but the noise leaking from the machine room A is somewhat increased.
[0044]
Rainwater or the like that has fallen on the shelf board 38 in the case of rain or the like is formed from the front, rear, left, and right edges of the shelf board 38 as shown by the arrows Z1, Z2 (see FIG. 5). It flows down into the portions 32 and 35, and enters the hollow portion 21 of the lower support column 20 from the open ends of the groove portions 32 and 35 as shown by arrows Z3 and Z4 (see FIG. 5). Directly It flows down and is discharged from the lower part of the lower support column 20 to the outside. In this way, rainwater or the like flows down into the groove portions 32 and 35 from the respective peripheral edges of the shelf plate 38, so that large foreign matters such as dead leaves pushed away by the rainwater and the like are dispersed and enter the entire length of the groove portions 32 and 35. Since it does not move easily in the narrow groove portions 32 and 35, it does not gather at one place and block the flow of rainwater or the like. Accordingly, there is no possibility of water overflowing from the groove portions 32 and 35 of the upper frame 30 even during heavy rain. Moreover, since the lower column 20 is a hollow material made of an aluminum extrusion material and the hollow portion is a drain pipe, a straight drain pipe having a large cross-sectional area can be obtained without reducing the volume in the machine room A. Since the horizontal members 11 and 13 to be formed and the upper horizontal members 31 and 34 to form the upper frame 30 are also made of an aluminum extruded material, the casing of the engine-driven air conditioning system can be reduced in weight.
[0045]
In this embodiment, since the shelf plate 38 is supported on the support flange portions 33a and 36a of the upper frame 30, the shelf plate 38 is reliably supported by the upper frame 30, and the support flange portions 33a and 36a. Since the portions projecting from front to back, left and right are bent downward, rainwater and the like that has fallen on the shelf plate 38 flows through the downward bent portion, so that substantially the entire amount flows down into the groove portions 32 and 35 of the upper frame 30 reliably. However, the present invention is not limited to this, and the support flange portions 33a and 36a may be eliminated, and the folding of the peripheral edge of the shelf plate 38 is stopped, and the groove portions 32 and 35 and the shelf plate 38 are instead replaced. For example, the rain water on the shelf plate 38 may be surely entered into the groove portions 32 and 35 of the upper frame 30 by providing a seal member.
[0046]
Further, in this embodiment, the blindfold extending above the shelf 38 on the upper edge of the outer wall portion of the first groove portion 32 of the first transverse member 31 of the upper frame 30 on the side where the heat exchanger 46 is provided. The portion 32a is formed, and the lower mounting portion of the heat exchanger 46, which tends to be unsightly in this way, is hidden by the blindfold 32a, so that the appearance of the casing of the engine-driven air conditioning system is improved. be able to. However, the present invention can be practiced without providing such a blindfold 32a.
[0047]
In the above-described embodiment, the groove portions 32 and 35 are formed on all the upper horizontal members 31 and 34 of the upper frame 30, but in the present invention, the groove portions are formed on some of the upper horizontal members 31 and 34. However, in this case, a flange that is bent upward is formed on the side edge of the shelf plate 38 on the side of the upper horizontal members 31 and 34 that are not provided with a groove portion, and the side is formed on that side. It is only necessary to prevent rainwater from flowing down. In the embodiment described above, both ends of the groove portions 32 and 35 are opened, but the present invention opens only one end portion of the groove portions 32 and 35 and closes the other end portion. It is also possible to implement. In the case where a groove portion is not provided in some of the upper lateral members 31 and 34 and only one end portion of the groove portions 32 and 35 is opened, a groove is formed in the upper end portion of some of the lower struts 20. Although the open ends of the shaped parts 32, 35 may not be connected, it is not necessary to provide the hollow part 21 in such a lower strut.
[Brief description of the drawings]
FIG. 1 is a perspective view showing the overall structure of an embodiment of a casing of an engine-driven air conditioning system according to the present invention.
FIG. 2 is a partially enlarged cross-sectional view taken along line 2-2 in FIG.
3 is a cross-sectional view taken along the line 3-3 in FIG.
4 is a cross-sectional view taken along line 4-4 of FIG.
5 is a partially enlarged cross-sectional view taken along line 5-5 in FIG.
6 is a cross-sectional view taken along the line 6-6 in FIG.
7 is a cross-sectional view taken along the line 7-7 in FIG.
FIG. 8 is a perspective view illustrating a drainage structure such as rainwater according to the prior art.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 ... Bottom frame, 11, 13 ... Horizontal member (1st horizontal member, 2nd horizontal member), 13a ... Hollow part, 13b ... 1st inlet, 13c ... 2nd inlet, 17 ... Bottom plate, 20 ... Post ( Lower support), 21 ... hollow part, 26, 27 ... cover plate (first cover plate, second cover plate), 30 ... upper frame, 31, 34 ... upper transverse member (first upper transverse member, second upper transverse member) Members), 32, 35 ... groove portions (first groove shape portions, second groove shape portions), 32a ... blindfold portions, 33a, 36a ... support flange portions (... first support flange portions, second support flange portions). 38 ... Shelf board, 46 ... Heat exchanger, A ... Machine room, B ... Heat exchanger room.

Claims (5)

In a housing of an engine-driven air conditioning system comprising a machine room that houses a compressor and an engine that drives the compressor, and a heat exchanger room that is installed on the machine room,
The machine room has a bottom frame formed by connecting each end of each pair of the first and second lateral members, four columns fixed to the four corners of the bottom frame and rising upward, Each end of each pair of the first upper horizontal member and the second upper horizontal member is connected to each other, and the four corners are composed of an upper frame fixed to the upper end of each column.
The heat exchanger chamber is formed on a shelf plate supported on four sides by the upper frame,
At least one of the struts is made of an aluminum extruded material in which a hollow portion is formed over the entire length,
At least one of the upper lateral members of the upper frame is made of an aluminum extruded material in which a groove-shaped portion is formed,
The shelf is supported by each upper transverse member of the upper frame such that substantially the entire amount of liquid such as rain water that has fallen thereon flows down into the channel from at least one side edge of the shelf,
The engine-driven air conditioning system is characterized in that the open end portion of the groove-shaped portion is attached to the upper end portion of the column so that liquid such as rainwater flowing from the end portion enters the hollow portion of the column. Housing. The casing of the engine-driven air conditioning system according to claim 1,
A support flange portion extending inward from the upper edge of the inner wall portion of the groove portion is formed on the upper horizontal member of the upper frame,
At least one side edge of the shelf plate is supported on the support flange portion, and a portion protruding outward from the support flange portion is bent downward along the inner surface of the groove portion. Enclosure for engine-driven air conditioning system. In the housing of the engine-driven air conditioning system according to claim 1 or 2,
The heat exchanger has a lower part attached along at least one side edge of the shelf so as to form at least one side of the heat exchanger chamber,
The upper horizontal member of the upper frame arranged along the lower part of the heat exchanger has the groove-shaped portion, and the blindfold extends above the shelf on the upper edge of the outer wall portion of the groove-shaped portion. An engine-driven air conditioning system housing characterized by the formation of In the housing of the engine drive type air conditioning system according to any one of claims 1 to 3,
At least one of the transverse members forming the bottom frame of the machine room is made of an aluminum extruded material having a cavity formed over its entire length, and the first inside the cavity communicates with the outside at locations other than the upper side and the upper side. Forming an inlet and a second inlet;
In a state where it is connected to the remaining horizontal member of the bottom frame, both ends of the cavity are closed,
Further, the upper side of the bottom frame is closed by a bottom plate except for the portion provided with the first suction port,
The engine-driven air conditioning system casing is characterized in that the four side surfaces of the machine room between the bottom frame, the support column, and the upper frame are closed by a cover plate. In a housing of an engine-driven air conditioning system comprising a machine room that houses a compressor and an engine that drives the compressor, and a heat exchanger room that is installed on the machine room,
The machine room has a bottom frame formed by connecting each end of each pair of the first and second lateral members, four columns fixed to the four corners of the bottom frame and rising upward, Each end of each pair of the first upper horizontal member and the second upper horizontal member is connected to each other, and the four corners are composed of an upper frame fixed to the upper end of each column.
The heat exchanger chamber is formed on a shelf plate supported on four sides by the upper frame,
At least one of the pillars is formed with a hollow portion,
At least one of the upper lateral members of the upper frame is formed with a groove portion,
The shelf plate is supported by each upper lateral member of the upper frame so that the liquid dropped on the shelf plate flows into the groove-shaped portion from at least one side edge of the shelf plate,
The housing of the engine-driven air conditioning system, wherein the open end portion of the groove-shaped portion is attached to the column so that liquid flowing from the end directly enters the hollow portion of the column.

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