JP2019052806A - Transport refrigeration unit and assembly method of the same - Google Patents

Abstract

To provide a transport refrigeration unit which does not need to perform compressor fixing work in a reduced work space and enables improvement of installation workability for positioning the compressor within a housing and the like.SOLUTION: A transport refrigeration unit includes: a housing attached to a ban body; a compressor 12 which is disposed within the housing and compresses a refrigerant; vibration control members 15 provided below the compressor 12; a sub bracket 16 which supports the vibration control members 15 from below and fixes the vibration control members 15; and a lower strength member 51 which serves as a strength member provided within the housing, extends in a horizontal direction, supports the sub bracket 16 from below, and fixes the sub bracket 16 at a fixing position. The lower strength member 51 is provided with a guide part 53 which causes the sub bracket 16 to slide in the horizontal direction to position the sub bracket 16 in the fixing position.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a transport refrigeration unit and a transport refrigeration unit assembly method.

  There is known a nose-mount type transport refrigeration unit that is mounted on the front wall of a van body above the driver's seat of a truck. In this transport refrigeration unit, the vertical cross-sectional shape of the casing is designed to be a substantially inverted triangle so as to avoid the carbitol trajectory, and an electric compressor is installed in the casing.

  On the other hand, Patent Document 1 discloses a compressor mounting device, although not intended for a transport refrigeration unit. In this document, as a compressor mounting device that can easily change the direction of the compressor, a base having a circular convex portion and a mounting plate having a round hole that can be fitted to the circular convex portion A structure is disclosed in which the compressor is fixed to the base, the circular hole of the mounting plate to which the compressor is fixed is fitted into the circular convex portion of the base, and the positioning hole of the base and the insertion hole of the mounting plate are bolted. Has been. Thus, the compressor can be rotated by the round hole and the circular convex portion, and the orientation of the compressor can be easily changed if the positioning hole of the base and the insertion hole of the mounting plate coincide with each other. Thus, a technique for enabling fixation is disclosed.

JP 2001-21180 A

  When a compressor is installed in a transport refrigeration unit whose longitudinal cross-sectional shape is designed to be a substantially inverted triangle, the height of the transport refrigeration unit in the housing is increased in order to secure a space in the height direction. It is preferable to arrange the compressor closer to the front wall of the van body. Further, when a heavy compressor is installed in the casing of the transport refrigeration unit, the compressor is arranged at a position close to a strength member (such as a frame) provided in the casing in order to secure a fixed strength. It is preferable. However, if the compressor is arranged close to the strength member such as the front wall of the body or the frame, it is difficult to secure a working space above the fastening portion of the compressor, which is necessary when replacing the compressor for maintenance or the like. . For this reason, in order to secure a working space, it is necessary to separate the compressor from strength members such as the front wall of the body and the frame. However, for that purpose, it is necessary to enlarge the size of the housing and to reinforce significantly for securing the strength, which leads to an increase in size and weight of the housing. Moreover, since the compressor is a heavy object, it is difficult to position the compressor in a limited space in the housing.

  The present invention has been made in view of such circumstances, and in order to secure the space in the height direction, the compressor is arranged near the front wall of the body, or in the housing for securing the fixing strength. Even if it is placed near the strength member such as a frame provided in the body, it is not necessary to perform the fixing work in the work space that is reduced by bringing it close to the front wall of the body and the strength member. It is an object of the present invention to provide a transport refrigeration unit and a transport refrigeration unit assembling method capable of improving the installation workability with respect to positioning of a compressor in a housing.

In order to solve the above problems, the transport refrigeration unit and the transport refrigeration unit assembly method employ the following means.
That is, a transport refrigeration unit according to the present invention includes a housing attached to a van body, a compressor disposed in the housing and compressing a refrigerant, a vibration isolating member provided below the compressor, A sub bracket for supporting and fixing the vibration isolating member from below and a strength member provided in the housing, extending in the horizontal direction, and supporting the sub bracket from below and fixing at a fixed position. A lower strength member, wherein the lower strength member is provided with a guide portion that slides the sub bracket in a horizontal direction and positions the sub bracket in the fixed position.

The lower strength member extending in the horizontal direction, which is a strength member in the housing, is provided with a guide portion that slides the sub bracket in the horizontal direction and positions the sub bracket in a fixed position. Thereby, the stable movement of the compressor placed on the lower strength member and the positioning at the fixed position can be easily performed.
Further, the sub bracket to which the compressor and the vibration isolating member are fixed is supported and fixed from below by a lower strength member extending in the horizontal direction. Thereby, it can be accessed and fixed from below the lower strength member. In this way, when accessing and fixing from below the lower strength member, the compressor is placed close to the front wall of the body to secure the space in the height direction, or the lower strength is secured to secure the fixing strength. Work space above the lower strength member that shrinks by moving closer to the front wall of the body and other strength members even when placed near the strength members connected to the members and extending in the vertical direction ( This eliminates the need for fixing work in difficult working spaces.

  Further, the transport refrigeration unit according to the present invention has a bottom plate that is rectangular when the guide portion is viewed in plan, a pair of side wall plates that rise from two opposite sides of the bottom plate, and the two opposite sides. A back wall plate standing up from one side intersecting with each other, and an inner width dimension between the pair of side wall plates corresponds to a width dimension of the sub bracket, and the pair of the side wall plates and the back wall plate A fixed position is determined.

  The guide portion includes a pair of opposing side wall plates, and the inner width dimension between the pair of side wall plates corresponds to the width dimension of the sub bracket. Thereby, the stable movement of the compressor mounted between the pair of side wall plates on the lower strength member can be easily performed. Moreover, the back wall board which cross | intersects with respect to a pair of opposing side wall board is provided. Accordingly, the position where the compressor is slid along the pair of side wall plates and is in contact with the back wall plate can be easily positioned as the fixed position of the compressor.

  The transport refrigeration unit according to the present invention includes a bottom plate that is rectangular when the guide portion is viewed in plan, a side wall plate that stands up from one side of the bottom plate, and another one that is orthogonal to the one side. A back wall plate standing up from a side, and the fixing position is determined by the side wall plate and the back wall plate.

  The guide portion is provided with one side wall plate. Thereby, the stable movement of the electric compressor unit placed on the lower strength member can be easily performed by sliding the compressor in a state where the sub bracket is placed along one side wall plate. Moreover, since the back wall plate orthogonal to one side wall plate is provided, the position where the compressor is slid along the one side wall plate and is in contact with the back wall plate can be positioned as the fixed position of the compressor. . Furthermore, since the side wall plate is provided only on one side of the bottom plate, the weight of the lower strength member can be suppressed as compared with the case where a pair of side wall plates are provided on two opposite sides.

  The transport refrigeration unit according to the present invention includes a bottom plate that is rectangular when the guide portion is viewed in plan, a drop groove portion provided on the bottom plate, and the bottom plate orthogonal to the groove direction of the drop groove portion. A back wall plate standing up from one side of the sub-bracket, wherein the groove width dimension of the drop groove section corresponds to the width dimension of the sub bracket, and the fixing position is determined by the drop groove section and the back wall board. It is characterized by.

  The guide part is provided with a dropping groove part. Since the groove width dimension of the dropping groove part corresponds to the width dimension of the sub bracket, the compressor placed on the dropping groove part on the lower strength member can be easily moved stably. Further, since the back wall plate is provided, the compressor can be slid along the groove and the position in contact with the back wall plate can be positioned as the fixed position of the compressor.

  Further, in the transport refrigeration unit according to the present invention, the compressor is a strength member provided in the body front wall of the van body and the housing, and is connected to the lower strength member and extends in the vertical direction. It is arranged in the vicinity of another existing strength member.

  A space in the height direction can be secured by arranging the compressor closer to the front wall of the body where the height in the housing is increased. Further, the fixing strength can be ensured by arranging it in the vicinity of another strength member. Accordingly, it is possible to secure the fixing strength of the compressor, secure the work space in the installation, and improve the workability without enlarging the outer dimensions of the housing and performing significant reinforcement for securing the fixing strength.

In the transport refrigeration unit according to the present invention, the sub bracket is fixed from below the lower strength member.

  By fixing the sub bracket from below the lower strength member, it is possible to fix it in the work space (work difficult space) above the lower strength member that shrinks by moving closer to the front wall of the body and other strength members. That's it.

  A transport refrigeration unit assembling method according to the present invention is a transport refrigeration unit assembling method for mounting a compressor in a housing, wherein the sub-bracket is fixed below the compressor via a vibration isolating member. And a compressor mounting step of mounting the sub bracket fixed to the compressor on a lower strength member that is a strength member provided in the housing and extends in a horizontal direction. And a positioning step of sliding the guide portion provided on the lower strength member to position the compressor at a fixed position, and the sub-bracket of the compressor positioned at the guide portion as the lower strength member. And an installation step of fixing from below.

Compression placed on the lower strength member by providing a guide part that slides the sub bracket in the horizontal direction and positions it at a fixed position on the lower strength member that extends in the horizontal direction, which is a strength member in the housing. Stable movement of the machine and positioning at a fixed position can be easily performed.
Further, the sub bracket to which the compressor and the vibration isolating member are fixed is supported and fixed from below by the lower strength member extending in the horizontal direction, so that it can be accessed and fixed from below the lower strength member. . Thus, when accessing and fixing from below the lower strength member, the compressor is disposed near the front wall of the body to secure a space in the height direction, or the lower strength member is secured to secure the fixing strength. The work space above the lower strength member (work) that shrinks by moving closer to the front wall of the body and other strength members even when placed near the other strength members connected to the vertical direction This eliminates the need for fixing work in difficult spaces.

  According to the transport refrigeration unit and the transport refrigeration unit assembling method according to the present invention, the compressor is disposed close to the front wall of the body in order to secure the space in the height direction, or in order to secure the fixing strength. Even when it is arranged close to the strength member, it is not necessary to perform the fixing work in the work space which is reduced by being brought close to the strength member provided in the front wall of the body and the casing. Furthermore, it is possible to improve the installation workability for the positioning of the compressor in the housing.

It is a right view which shows a part of track | truck which mounted the compressor in the nose mount. It is the schematic block diagram which looked at the whole structure of the compressor from the front. It is the top view which showed the transport refrigeration unit which concerns on 1st Embodiment of this invention. It is the right view which showed the lower strength member, vertical strength member (other strength member), and body front wall which concern on 1st Embodiment of this invention. It is the right view which showed the transport refrigeration unit which concerns on 1st Embodiment of this invention. It is a front view which shows the state which the compressor of FIG. 2 is slid on the guide part formed in a lower strength member. It is the front view which showed the refrigeration unit for transport which concerns on 1st Embodiment of this invention. It is a perspective view which shows the guide part which concerns on 1st Embodiment of this invention. It is the top view which showed the other example of the guide part which concerns on 1st Embodiment of this invention. It is the right view which showed the refrigeration unit for transport which concerns on 2nd Embodiment of this invention. It is the right view which showed an example of the transport refrigeration unit which concerns on 3rd Embodiment of this invention. It is a perspective view which shows the guide part which concerns on 3rd Embodiment of this invention. It is the right view which showed the other example of the transport refrigeration unit which concerns on 3rd Embodiment of this invention.

  Hereinafter, a transport refrigeration unit and a transport refrigeration unit assembling method according to an embodiment of the present invention will be described with reference to the drawings.

[First Embodiment]
A transport refrigeration unit 10A according to a first embodiment of the present invention will be described. FIG. 1 shows the compressor 12 installed on a truck 70. The compressor 12 is an electric compressor driven by an inverter, for example. The compressor 12 is used as one of the devices constituting the refrigeration cycle used for cooling the cargo compartment in the van body provided in the truck 70.
The compressor 12 is installed in a housing 73 of a nose mount type transport refrigeration unit 10A mounted on a body front wall 71 of a van body of a truck 70, which is a heat insulating material. The casing 73 has a substantially inverted triangular shape whose long side is positioned on the body front wall 71 side so as not to interfere with the cab locust trajectory T when the cabin provided in the truck 70 is lifted (cabluted). For this reason, the closer to the body front wall 71, the larger the space in the height direction in the housing 73 becomes.

As shown in FIG. 2, a vibration isolation member 15 and a sub bracket 16 are provided below the compressor 12.
The anti-vibration member 15 includes, for example, an anti-vibration rubber and attenuates vibration. The sub bracket 16 is a rectangular plate-shaped body. At four corners of the sub bracket 16, four upper fastening members 17 such as bolts (see FIG. 3) are attached. By these upper fastening members 17, the sub bracket 16 is fixed and assembled to the lower portion of the compressor 12 via the vibration isolating member 15.

FIG. 4 is a right side view showing the lower strength member 51, the longitudinal strength member (other strength member) 58, and the body front wall 71 provided in the housing 73.
The lower strength member 51 is a strength member that bears the strength of the structure in the housing 73 of the transport refrigeration unit 10A, and extends in the horizontal direction. The lower strength member 51 is rigidly fixed to the longitudinal strength member 58, which is another strength member. A lower space A is formed below the lower strength member 51. The lower space A is a space that can be accessed by an operator.
The vertical strength member 58 is a strength member that bears the strength of the structure in the housing 73 of the transport refrigeration unit 10A, and extends in the vertical direction. For example, the vertical strength member 58 is a vertical column or the like constituting the frame.

  The lower strength member 51 includes a bottom plate 54 that is rectangular when viewed in plan (see FIG. 3), and a pair of side wall plates 55 that stand at right angles on two opposing sides (the left-right direction shown in FIG. 4) of the bottom plate 54. And a back wall plate 56 erected at a right angle on one side (left side shown in FIG. 3) intersecting the two sides.

  FIG. 5 is a right side view of the transport refrigeration unit 10A according to the present embodiment. The inner width dimension between the pair of side wall plates 55 corresponds to the width dimension of the sub bracket 16 fixed below the compressor 12. Accordingly, as shown in FIG. 6, when the compressor 12 is placed on the lower strength member 51 and then slid in the sliding direction D, the pair of side wall plates 55 is moved to the compressor 12 (sub bracket 16). Can act as a guide. Thereby, the compressor 12 of the lower strength member 51 can be slid in a stable state. Further, since the lower strength member 51 includes the back wall plate 56, as shown in FIG. 7, the compressor 12 (sub bracket 16) is positioned at a position where the slide compressor 12 (sub bracket 16) is in contact with the back wall plate 56. It can be positioned as a fixed position. That is, as shown in the perspective view of FIG. 8, the guide portion 53 </ b> A is formed by the bottom plate 54, the pair of side wall plates 55, and the back wall plate 56 provided in the lower strength member 51.

  As shown in FIGS. 3, 5 and 7, when the compressor placed on the lower strength member 51 is positioned by the guide portion 53 </ b> A, the sub bracket 16 fixed below the compressor 12 is moved to the lower strength member 51. Are fixed at four points from below by a lower fastening member 18 such as a bolt. Thereby, the compressor 12 is fixed to the lower strength member 51.

  As shown in FIGS. 3 and 5, the compressor 12 is arranged close to the body front wall 71 in the housing 73 in order to secure a space in the height direction. Further, in order to secure the fixing strength, the arrangement is brought close to the longitudinal strength member 58. For this reason, the work space is reduced above the lower strength member 51 and in the vicinity of the body front wall 71 and the vertical strength member 58. In addition, since there are densely packed refrigerant pipes and wiring (not shown), there is a difficult work space S.

  If the compressor 12 is to be directly fixed to the lower strength member 51 from above the lower strength member 51, the fixing work is performed in the vicinity of the body front wall 71 and the vertical strength member 58, that is, in the difficult work space S. Inevitable.

  However, in the present embodiment, as shown in FIG. 5, the lower space A below the lower strength member 51 can be used, and the compressor 12 is fixed from below the lower strength member 51 via the sub bracket 16. Compared with the case where the compressor 12 is directly fixed to the lower strength member 51 from above the lower strength member 51, the range in which the lower fastening member 18 can be fastened can be set wider. As a result, the fastening positions of the four lower fastening members 18 can be positioned on the inner side (the radial center side of the compressor 12) than the upper fastening members 17 fastened at the four corners of the compressor 12. Work in the difficult space S can be avoided.

According to this embodiment, the following effects can be obtained.
By arranging the compressor 12 in the vicinity of the body front wall 71, a space in the height direction can be secured. Further, by arranging it in the vicinity of the longitudinal strength member 58, securing strength can be ensured. Accordingly, it is possible to secure the fixing strength of the compressor 12, secure the work space in the installation, and improve the workability without enlarging the outer dimensions of the housing 73 and performing significant reinforcement for securing the fixing strength. .
Further, the compressor 12 positioned on the lower strength member 51 is fixed from below the lower strength member 51, so that it is disposed near the vertical strength member 58 and the body front wall 71, and the work difficult space is reduced. It is not necessary to perform the fixing work in S, and the workability can be further improved.
Further, a stable slide and positioning of the compressor 12 placed on the lower strength member 51 is performed by a guide portion 53A formed by a bottom plate 54, a pair of side wall plates 55, and a back wall plate 56 provided in the lower strength member 51. Can be easily performed. It is particularly advantageous when the compressor 12 is heavy.

  The pair of side wall plates 55 and the back wall plate 56 may be provided in the lower strength member 51 so that the slide direction D is the vertical direction (solid arrow) shown in FIG. 9 to form the guide portion 53A. . Also, the sliding direction may be angled with respect to the vertical direction in the plane shown in FIG. 9, for example, 1 so that it can slide at an angle of 45 degrees as in the sliding direction D ′ indicated by the broken line. The pair of side wall plates 55 and the back wall plate 56 may be provided in the lower strength member 51 to form the guide portion 53A.

[Second Embodiment]
Next, the transport refrigeration unit 10B according to the second embodiment of the present invention will be described. The present embodiment differs from the first embodiment in the form of the guide portion 53, and the other points are the same. Therefore, only different points from the first embodiment will be described, and the other parts are denoted by the same reference numerals and the description thereof is omitted.

  FIG. 10 is a right side view of the transport refrigeration unit 10B according to the present embodiment. Similarly to the first embodiment, the lower strength member 51 includes a bottom plate 54 and a back wall plate 56 that stands up at a right angle from one side of the bottom plate 54. In addition, a side wall plate 55 is provided which stands upright from the other side orthogonal to the one side. On the side facing the side wall plate 55, a vertically standing wall portion is not provided. Thereby, the compressor 12 can be slid in a state along the one side wall plate 55. Further, since the lower strength member 51 is provided with the back wall plate 56, the compressor 12 is positioned at a position where the slid compressor 12 (sub bracket 16) contacts the back wall plate 56. The That is, the guide portion 53 </ b> B is formed by the bottom plate 54, the one side wall plate 55, and the back wall plate 56 provided in the lower strength member 51. The sub bracket 16 fixed below the positioned compressor 12 is fixed at four points from below the lower strength member 51 by a lower fastening member 18 such as a bolt. Thereby, the compressor 12 is fixed to the lower strength member 51.

According to this embodiment, the following effects can be obtained.
A stable slide and positioning of the compressor 12 placed on the lower strength member 51 is facilitated by the guide portion 53B formed by the bottom plate 54, the one side wall plate 55, and the back wall plate 56 provided in the lower strength member 51. It can be carried out. Further, since the side wall plate 55 is provided only on one side of the bottom plate 54, an increase in the weight of the lower strength member 51 can be suppressed as compared with the first embodiment in which a pair of side wall plates are provided. That is, an increase in the weight of the entire transport refrigeration unit 10B can be suppressed.

[Third Embodiment]
Next, a transport refrigeration unit 10C according to a third embodiment of the present invention will be described. The present embodiment differs from the first embodiment in the form of the guide portion 53, and the other points are the same. Therefore, only different points from the first embodiment will be described, and the other parts are denoted by the same reference numerals and the description thereof is omitted.

  FIG. 11 shows a right side view of the transport refrigeration unit 10C according to the present embodiment. Similarly to the first embodiment, the lower strength member 51 includes a bottom plate 54 and a back wall plate 56 that stands up at a right angle from one side of the bottom plate 54. The bottom plate 54 is provided with a drop groove 57. The drop groove 57 is a substantially concave groove whose groove direction coincides with the slide direction D (see FIG. 3), and forms a taper in which the groove width tapers from the groove top toward the groove bottom. The width dimension of the groove bottom portion corresponds to the width dimension of the sub bracket 16 fixed below the compressor 12. Thereby, the compressor 12 can be slid in a state along the groove direction of the dropping groove portion 57. Further, since the lower strength member 51 is provided with the back wall plate 56, the compressor 12 is positioned at a position where the slid compressor 12 (sub bracket 16) contacts the back wall plate 56. The That is, as shown in the perspective view of FIG. 12, the guide portion 53 </ b> C is formed by the bottom plate 54, the dropping groove portion 57, and the back wall plate 56 provided in the lower strength member 51. Then, as shown in FIG. 11, the sub bracket 16 fixed below the positioned compressor 12 is fixed at four points from below the lower strength member 51 by a lower fastening member 18 such as a bolt. Thereby, the compressor 12 is fixed to the lower strength member 51.

According to this embodiment, the following effects can be obtained.
The guide portion 53C formed by the bottom plate 54, the side wall plate 55, and the back wall plate 56 provided in the lower strength member 51 can easily perform stable sliding and positioning of the compressor 12 placed on the lower strength member 51. Can do. Moreover, the dropping groove part 57 forms a taper in which the groove width tapers from the groove upper part toward the bottom part. Thereby, the compressor 12 can be easily dropped into the dropping groove portion 57, and the positioning of the compressor 12 in the groove direction of the dropping groove portion 57 can be easily performed. Furthermore, since the side wall plate 55 as in the first and second embodiments is not provided, an increase in the weight of the lower strength member 51 can be suppressed. That is, an increase in the weight of the entire transport refrigeration unit 10C can be suppressed.

In addition, the dropping groove part 57 may be a parallel groove in which a taper is not formed as shown in FIG. In this case, the stability of the compressor 12 in the groove width direction of the dropping groove portion 57 is improved as compared with the dropping groove portion 57 in which the taper is formed.
Furthermore, it cannot be overemphasized that the taper shape as mentioned above is applicable to the side wall board 55 of other embodiment.

  In the embodiment described above, the sub bracket 16 is fixed at four points by the lower fastening member 18 such as a bolt, but the number of fixing points can be changed as appropriate, and may be three points or five points or more. . Further, the number of fixing points of the upper fastening member 17 can be changed as appropriate, and may be three or five or more, and the positions of the fixing points are not limited to the four corners but can be changed as appropriate. it can. For example, three or more upper fastening members 17 may be arranged in an annular shape with respect to the radial center of the compressor 12.

10 (10A, 10B, 10C) Transport refrigeration unit 12 Compressor 15 Vibration isolation member 16 Sub bracket 17 Upper fastening member 18 Lower fastening member 51 Lower strength member 53 (53A, 53B, 53C) Guide portion 54 Bottom plate 55 Side wall plate 56 Back wall plate 57 Drop groove 58 Longitudinal strength member (other strength member)
70 Truck 71 Body front wall 73 Case A Lower space D Sliding direction S Difficult to work space T Cabylt locus

Claims (7)

A housing attached to the van body;
A compressor disposed in the housing and compressing the refrigerant;
An anti-vibration member provided below the compressor;
A sub bracket for supporting and fixing the vibration isolation member from below;
A lower strength member that is a strength member provided in the housing and extends in the horizontal direction, and supports the sub bracket from below and is fixed at a fixed position;
With
The transporting refrigeration unit, wherein the lower strength member is provided with a guide portion that slides the sub bracket in a horizontal direction and positions the sub bracket in the fixed position. The guide part includes a bottom plate that is rectangular when viewed in plan, a pair of side wall plates that stand from two opposite sides of the bottom plate, and a back wall plate that stands from one side that intersects the two opposite sides. When,
With
The inner width dimension between the pair of side wall plates corresponds to the width dimension of the sub bracket,
The transport refrigeration unit according to claim 1, wherein the fixed position is determined by a pair of the side wall plate and the back wall plate. The guide portion has a bottom plate that is rectangular when viewed in plan, a side wall plate that stands up from one side of the bottom plate, and a back wall plate that stands up from the other side orthogonal to the one side;
With
The transport refrigeration unit according to claim 1, wherein the fixed position is determined by the side wall plate and the back wall plate. The guide portion is a bottom plate that is rectangular when viewed in plan, a drop groove portion provided on the bottom plate, a back wall plate standing from one side of the bottom plate perpendicular to the groove direction of the drop groove portion, With
The groove width dimension of the drop groove part corresponds to the width dimension of the sub bracket,
The transport refrigeration unit according to claim 1, wherein the fixed position is determined by the drop groove portion and the back wall plate.   The compressor is a body front wall of the van body and a strength member provided in the housing, and is disposed in the vicinity of another strength member connected to the lower strength member and extending in the vertical direction. The transport refrigeration unit according to any one of claims 1 to 4, wherein   The transport refrigeration unit according to claim 1, wherein the sub bracket is fixed from below the lower strength member. A transport refrigeration unit assembly method for mounting a compressor in a housing,
A compressor assembly step of fixing a sub bracket via a vibration isolating member below the compressor;
A compressor mounting step of mounting the sub bracket fixed to the compressor on a lower strength member that is a strength member provided in the housing and extends in a horizontal direction;
A positioning step in which the compressor is positioned at a fixed position by sliding on a guide portion provided in the lower strength member;
An installation step of fixing the sub bracket of the compressor positioned by the guide portion from below the lower strength member;
A method for assembling a transport refrigeration unit comprising:

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