JP6239368B2 - Transport refrigeration unit - Google Patents

Description

  The present invention relates to a transport refrigeration unit in which a unit body is partitioned into a power source chamber and a heat exchanger chamber.

  In a self-power generation type transport refrigeration unit equipped with an engine that generates power, an induction motor, etc., the refrigeration unit itself discharges heat released from the power source to the outside. An air cooling structure that blows outside air is adopted. As this air-cooling structure, a structure for air-cooling a power source by using a blower for a heat exchanger such as a condenser or an engine radiator, which is indispensable in a refrigeration unit, is widely adopted because it can be realized at low cost.

  However, in the air-cooling structure as described above, it is necessary to provide an opening for taking in outside air and an opening for exhaust that communicate with the heat exchanger, and the power source cannot be sufficiently closed, resulting in low noise. was difficult. Therefore, a power source chamber in which a power source such as an engine and an induction motor and a compressor for compressing a refrigerant are arranged and a heat exchanger chamber in which a condenser and a blower are arranged are partitioned by a partition plate, a soundproof panel, and the like. In addition, a power source, a compressor, and the like that are enclosed are provided (see Patent Documents 1 and 2).

Japanese Utility Model Publication No. 2-28068 JP 2001-191838 A

  As in Patent Documents 1 and 2, the noise can be reduced by enclosing the power source and the compressor. However, in this case, the air cooling function for the power source and the like is impaired, and therefore, Patent Document 1 shows. As described above, a damper made of shape memory alloy is provided in the ventilation hole provided in the partition plate, and the damper is opened and ventilated only when the temperature of the power source chamber rises, or by a fan for the engine radiator A method in which the power source chamber side is air-cooled independently is considered.

  However, in the case where the shape memory alloy damper is provided in the ventilation hole, the air cooling function cannot be sufficiently ensured during normal operation. In the system that cools the power source room independently by air, when the radiator fan breaks down, the air cooling function for the power source is impaired, so the refrigeration unit cannot be operated and the load is damaged. have.

  The present invention has been made in view of such circumstances, and the unit body is partitioned into a power source chamber and a heat exchanger chamber, and the enclosing function on the power source chamber side is enhanced to reduce noise. At the same time, it is intended to provide a transport refrigeration unit that can cool each room independently by a blower, and can continue operation by air-cooling each power source even when the blower on the power source room side is abnormal. To do.

In order to solve the above-described problems, the transport refrigeration unit of the present invention employs the following means.
That is, in the transport refrigeration unit according to the present invention, the inside of the unit body is provided with a power source chamber in which an engine, an induction motor, and a compressor as power sources are disposed, an external heat exchanger, and a blower. In the transport refrigeration unit partitioned into a heat exchanger chamber, the power source chamber and the heat exchanger chamber can each be independently circulated through a blower, and the two chambers The partition wall is configured to have a communication port, and the communication port is provided with an opening / closing member that opens and closes the communication port. The heat exchanger chamber is opened or removed when the opening / closing member is opened or removed. Outside air can be circulated to the power source chamber side through a side blower.

  According to the present invention, there is a transport refrigeration unit in which the inside of the unit body is partitioned into a power source chamber and a heat exchanger chamber, and the power source chamber and the heat exchanger chamber are each independently supplied with outside air via the blower. The communication wall is configured to have a communication port provided in a partition wall that divides both chambers, and an opening / closing member that opens and closes the communication port is provided in the communication port so as to be openable / detachable. Since the outside air can be circulated to the power source chamber side through the blower on the heat exchanger chamber side when opening or removing the air, the power source chamber and the heat exchanger chamber are communicated by the opening / closing member during normal operation. By closing the communication port, it is possible to enhance the sound insulation function on the power source chamber side, while an abnormality occurs in the blower on the power source chamber side, and the engine, induction motor, compressor, etc. If air cooling becomes difficult, By removing opening or member, it may be flowing through the outside air to the power source chamber side through the heat exchanger chamber of blower. Therefore, it is possible to reinforce the enclosing function on the power source room side and reduce the noise of the transport refrigeration unit, and even if an abnormality occurs in the cooling fan on the power source room side, the operation of the refrigeration unit is continued as it is. Can be maintained, and the damage of the cargo can be prevented to ensure the reliability of transportation.

  Furthermore, in the transport refrigeration unit of the present invention, in the transport refrigeration unit, the opening / closing member can be opened or removed automatically or manually when an abnormality occurs in the blower on the power source chamber side. It is characterized by that.

  According to the present invention, when the abnormality occurs in the fan on the power source chamber side, the opening / closing member is automatically or manually opened or removed, so even if an abnormality occurs in the fan on the power source chamber side, By detecting the abnormality and opening or removing the opening / closing member automatically or manually, the outside air can be circulated to the power source chamber side through the blower on the heat exchanger chamber side. Even when the blower fails, the outside air can be circulated to the power source chamber side, the power source and the compressor can be cooled and the operation can be continued, and damage to the load can be prevented.

  Furthermore, in the transport refrigeration unit of the present invention, in the transport refrigeration unit, at least a part of the blower on the power source chamber side and / or the outer panel covering the outer surface of the power source chamber is detachably provided. The blower on the power source chamber side is removable when abnormal.

  According to the present invention, at least a part of the fan on the power source chamber side and / or the outer surface panel covering the outer surface of the power source chamber is detachably provided, and can be removed when the fan on the power source chamber side is abnormal. Therefore, when an abnormality occurs in the blower on the power source chamber side, part of the outer panel that covers the blower and / or the outer surface of the power source chamber is removed, so that outside air can be easily taken into the power source chamber. Can do. Therefore, even when the blower on the power source chamber side fails, outside air can be circulated to the power source chamber side via the blower on the heat exchanger chamber side, and the operation can be continued to prevent damage to the load.

  Furthermore, the transport refrigeration unit of the present invention is characterized in that, in any of the transport refrigeration units described above, the blower on the power source chamber side is also used as a cooling fan for a radiator of the engine. .

  According to the present invention, since the fan on the power source chamber side is also used as a cooling fan for the engine radiator, the fan on the power source chamber side is also used as an existing radiator cooling fan. It is possible to ensure an air cooling function for a power source such as an engine or an induction motor and a compressor without any increase. Therefore, while maintaining the air cooling function of the power source, the compressor, etc., the complexity of the configuration can be avoided and the enclosing function on the power source chamber side can be strengthened.

  Further, in the transport refrigeration unit of the present invention, in the transport refrigeration unit, the external heat exchanger functions as an evaporator, and when the refrigeration unit is operated by heat pump heating, the opening / closing member is opened or removed, The outside air heated on the power source chamber side can be taken into the heat exchanger chamber side.

  According to the present invention, when the external heat exchanger functions as an evaporator and the refrigeration unit is operated by heat pump heating, the open / close member is opened or removed, and the outside air warmed on the power source chamber side is the heat exchanger chamber side Therefore, when heating the load by heating the refrigeration unit with a heat pump, the outside air heated on the power source chamber side is supplied to the external heat exchanger that functions as an evaporator. be able to. Therefore, while being able to improve the heating capability at the time of heat pump heating operation, the frost formation with respect to an external heat exchanger can be suppressed.

  Furthermore, the transport refrigeration unit of the present invention is characterized in that, in any of the transport refrigeration units described above, the opening / closing member is slidably installed along the wall surface of the partition wall.

  According to the present invention, since the opening / closing member is installed so as to be slidable along the wall surface of the partition wall, since a large number of devices are already accommodated and installed, a sufficient installation space for the opening / closing member is ensured. In the power source room or heat exchanger room where it is not possible to install, the opening and closing member can be slid along the wall of the partition wall to install the opening and closing member that can automatically or manually open and close the communication port in a minimum space can do. Therefore, the opening / closing member can be installed while maintaining the unit dimensions without expanding the power source chamber side or the heat exchanger chamber side.

  According to the present invention, the sound insulation function on the power source chamber side can be enhanced by closing the communication port that connects the power source chamber and the heat exchanger chamber by the opening / closing member during normal operation. When an abnormality occurs in the blower on the source chamber side and it becomes difficult to air-cool the engine, induction motor, compressor, etc. that are the power source, the blower on the heat exchanger chamber side can be opened by opening or removing the opening / closing member. Since the outside air can be circulated also to the power source chamber side through the power source chamber, the enclosing function on the power source chamber side can be strengthened, and the noise of the transport refrigeration unit can be reduced. Even if an abnormality occurs in the cooling blower, the operation of the refrigeration unit can be continued as it is, and the damage of the load can be prevented to ensure the reliability of transportation.

It is the front view (A) and its top view (B) of the transport refrigeration unit concerning a 1st embodiment of the present invention. In the transport refrigeration unit shown in FIG. 1, there are a front view (A) and a plan view (B) with the opening / closing member removed. It is the front view (A) and its top view (B) of the transport refrigeration unit which concern on the modification of the said embodiment. FIG. 4 is a front view (A) and a plan view (B) of the transport refrigeration unit shown in FIG. 3 with the opening / closing member removed. It is sectional drawing of the principal part which shows the installation structure of the opening / closing member of the transport refrigeration unit which concerns on other embodiment of this invention. It is a front view which shows the installation position of the opening / closing member of the transport refrigeration unit which concerns on other embodiment of this invention. It is a structure explanatory view of the fan for radiators of the refrigeration unit for transportation concerning other embodiments of the present invention. It is explanatory drawing of the attachment or detachment structure of the outer surface panel of the transport refrigeration unit which concerns on other embodiment of this invention. It is a state explanatory view at the time of a heat pump heating operation of a transport refrigeration unit according to another embodiment of the present invention.

Embodiments according to the present invention will be described below with reference to the drawings.
[First Embodiment]
Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. 1 to 4.
FIG. 1 shows a front view (A) and a plan view (B) of a transport refrigeration unit according to this embodiment, and FIG. 2 shows a front view (A) with its opening / closing member removed. The plan view (B) and FIG. 3 show a front view (A) of the transport refrigeration unit according to the modification, the plan view (B), and FIG. 4 shows the front view with the opening and closing member removed. (A) and its plan view (B) are shown.
1 and 2, the transport refrigeration unit 1 is a unit of the type mounted on the front surface of the container, and has a substantially rectangular shape when viewed from the front and a predetermined thin dimension in the depth direction (thickness direction). The unit main body 2 is provided.

  In the unit main body 2, devices that serve as a power source for the refrigeration unit 1 and components on the condensing unit side are mounted. The transport refrigeration unit 1 is mounted in the unit main body 2. It is comprised from the apparatus used as the motive power source, the component apparatus by the side of a condensing unit, and the component apparatus by the side of the evaporator unit installed in the container.

  The inside of the unit body 2 is divided into two upper and lower chambers by a partition wall 3, the lower chamber is a power source chamber 4, and the upper chamber is a heat exchanger chamber 5. In the lower power source chamber 4, devices such as a dedicated engine (also referred to as a sub-engine), an induction motor, and a compressor for compressing refrigerant (hereinafter, this embodiment) that serve as a power source for the refrigeration unit 1. Then, these may be collectively referred to as a power source 6), and a radiator 7 and a radiator cooling fan 8 that are auxiliary machines of the engine are disposed.

  The outer periphery of the power source chamber 4 is enclosed by an outer panel 9. In addition, this outer surface panel 9 is good also as a sound absorption panel by which sound absorption was affixed on the inner surface as needed. In addition, the outer panel 9 is provided with an outside air intake port 10 for taking in outside air at an appropriate place and an exhaust port 11 for exhausting it, so that outside air for cooling the power source 6 can be circulated. This outside air is configured to be forcibly circulated by using the radiator cooling fan 8 as a blower for circulating the outside air.

  In the upper heat exchanger chamber 5, an outside heat exchanger 12 that acts as a condenser during cooling operation and an evaporator during heating operation, and a blower 13 that vents outside air to the outside heat exchanger 12. Are arranged. Here, the external heat exchanger 12 is divided and arranged on the left and right sides, and the blower 13 is disposed on the upstream side in the ventilation direction with respect to the external heat exchanger 12, and the blown air from the blower 13 is exchanged outside the heat. An example of a pusher system in which the air is pushed into the vessel 12 and ventilated is shown. Although only one blower 13 is illustrated, it is a matter of course that a plurality of blowers 13 may be installed according to the size of the external heat exchanger 12.

  The outer periphery of the heat exchanger chamber 5 is also enclosed by an outer panel 14, and a suction grill 15 for sucking outside air is provided in the center of the front, and a blow grill 16 is provided on both sides of the suction grill 15. It is set as the provided structure. Outside air is sucked into the heat exchanger chamber 5 through the blower 13 from the suction grill 15, and after passing through the outside heat exchanger 12, the outside air is exhausted to the outside through the blowout grill 16, thereby forcibly circulating the outside air. It is set as the structure.

  Furthermore, in this embodiment, the power source chamber 4 and the heat exchanger chamber 5 are communicated with a central portion of the partition wall 3 that divides the inside of the unit main body 2 into the power source chamber 4 and the heat exchanger chamber 5. The communication port 17 is provided, and the opening / closing member 18 for opening and closing the communication port 17 is provided to the communication port 17 so as to be openable and detachable.

  The communication port 17 is closed during normal cooling operation, and is separated from each other when the radiator cooling fan 8 is abnormal (at the time of failure) or during warming operation under a low outside temperature, as will be described later. The external power can be sucked and discharged between the power source chamber 4 and the heat exchanger chamber 5, and power is supplied in the power source chamber 4 via the blower 13 provided in the heat exchanger chamber 5. The size of the opening is such that the outside air for cooling the source 6 can be circulated.

  The opening / closing member 18 that opens and closes the communication port 17 is provided on the power source chamber 4 side where maintenance is frequently performed, and is detachable via a bolt or the like, or automatically or manually via an actuator. It can be opened and closed freely. When the opening / closing member 18 is automatically opened and closed by the actuator, the actuator may be driven based on the abnormality detection signal or the heating operation signal to open the opening / closing member 18.

  In addition, although embodiment mentioned above shown in FIG. 1, FIG. 2 is a thing about the pusher system which has arrange | positioned the air blower 13 to the upstream of the ventilation direction with respect to the external heat exchanger 12, FIG. 3, FIG. As shown in the drawing, the refrigeration unit 1 has a puller-type configuration in which the blower 13 is disposed downstream in the ventilation direction with respect to the external heat exchanger 12 and the suction air from the blower 13 is passed through the external heat exchanger 12. Can be applied similarly.

  In this case, in the pusher system, outside air is sucked and discharged through the communication port 17 as shown by arrows in FIG. 2 when the outside air is circulated from the heat exchanger chamber 5 side to the power source chamber 4 side through the communication port 17. On the other hand, in the puller system, as indicated by an arrow in FIG. 4, outside air is circulated from the power source chamber 4 side to the heat exchanger chamber 5 side through the communication port 17. Further, the external heat exchanger 12 is arranged so as to face the suction grille 15, and has a layout in which the blowers 13 are arranged in a distributed manner so as to face the blowout grills 16 on both sides thereof.

With the configuration described above, according to the present embodiment, the following operational effects can be obtained.
In the transport refrigeration unit 1, a power source chamber 4 in which a power source 6 is disposed and a heat exchanger chamber 5 in which an external heat exchanger 12 and a blower 13 are disposed are partitioned by a partition wall 3. The power source chamber 4 can also be used as a radiator cooling fan 8 so that the outside air can be circulated independently. Distribution is possible through the exchanger 12.

  For this reason, during normal cooling operation, the heat exchange between the outside air circulated through the blower 13 and the refrigerant circulated in the outside heat exchanger 12 is performed on the heat exchanger chamber 5 side, and the refrigeration cycle is functioned. By doing so, the inside of the container can be cooled. In the power source chamber 4, the engine, induction motor, compressor, engine radiator 7, etc., which are the power source 6, can be operated by the outside air circulated through the radiator cooling fan 8. it can.

  On the other hand, during normal cooling operation, the communication port 17 provided in the partition wall 3 is closed by an opening / closing member 18 as shown in FIGS. Since 4 is enclosed by the partition wall 3 and the outer panel 9, the generated sound from the power source 6 which is a noise source is shielded, and the release to the outside is minimized to make the transport refrigeration unit 1 low in noise. Can be

  In addition, when an abnormality occurs in the radiator cooling fan 8 that is a blower that circulates outside air and cools the power source 6 on the power source chamber 4 side and cannot be operated, the refrigeration unit 1 is operated as it is. In this embodiment, since the communication port 17 provided with the opening / closing member 18 is provided in the partition wall 3 and the opening / closing member 18 is openable / detachable, the radiator cooling fan 8 is abnormally stopped. Even if this is detected and the opening / closing member 18 is removed or opened manually or automatically, as shown in FIG. 2 or FIG. 4, the power source chamber 4 is provided via the blower 13 on the heat exchanger chamber 5 side. Outside air can be circulated inside.

  That is, even if the cooling fan 8 for the radiator is abnormally stopped, if the blower 13 on the heat exchanger chamber 5 side is rotated, a part of the outside air blown from the blower 13 is as shown in FIG. Since the air is blown into the power source chamber 4 through the communication port 17 and is exhausted to the outside through the power source chamber 4, the power source 6 can be air-cooled by the external airflow. Similarly, in the case of the puller system shown in FIG. 4, the air on the power source chamber 4 side is sucked through the communication port 17 by the suction action of the blower 13 on the heat exchanger chamber 5 side. The outside air can be circulated and the power source 6 can be air-cooled.

  Therefore, according to this embodiment, even when the radiator cooling fan 8 that is a blower on the power source chamber 4 side is abnormally stopped due to a failure or the like, the air cooling function for the power source 6 can be secured and the cooling operation can be continued. In addition, it is possible to prevent damage to the cargo and ensure the reliability of transportation. Further, by dividing the power source chamber 4 and the heat exchanger chamber 5 and strengthening the enclosing function on the power source chamber 4 side, the noise of the transport refrigeration unit 1 can be reduced.

  The opening / closing member 18 can be opened or removed automatically or manually when an abnormality occurs in the radiator cooling fan 8 which is a blower on the power source chamber 4 side. Even if an abnormality occurs in the blower (cooling fan 8), the power source chamber is detected via the blower 13 on the heat exchanger chamber 5 side by detecting the abnormality and opening or removing the opening / closing member 18 automatically or manually. Therefore, even when the blower (cooling fan 8) on the power source chamber 4 side breaks down, the outside air is circulated on the power source chamber 4 side to cool the power source 6 and the compressor. Thus, the operation can be continued and damage to the cargo can be prevented.

  Further, in the present embodiment, the blower on the power source chamber 4 side is also used as a cooling fan 8 for the engine radiator. For this reason, the air cooling function for the power source 6 such as the engine and the induction motor and the compressor can be secured without increasing the number of fans by sharing the fan on the power source chamber 4 side with the existing radiator cooling fan 8. can do. Thereby, while maintaining the air cooling function of the power source 6 and the compressor, the complexity of the configuration can be avoided and the enclosing function on the power source chamber 4 side can be enhanced.

[Other Embodiments]
Next, another embodiment of the present invention will be described with reference to FIGS.
(1) In the first embodiment, the opening / closing member 18 is provided on the power source chamber 4 side so as to be attachable / detachable with bolts or the like with respect to the partition wall 3 or via an actuator or the like. As shown in FIG. 5, a guide groove 19 may be provided in the partition wall 3, and a flat plate-shaped opening / closing member 18A may be slidably fitted into the guide groove 19 so that the partition wall 3 can be automatically opened and closed manually or by an actuator.

  As described above, the opening / closing member 18A is provided with the guide groove 19 in the partition wall 3 and is installed so as to be slidable along the wall surface. In the power source chamber 4 or the heat exchanger chamber 5 where it is not possible to ensure sufficient, an opening / closing member 18A that can automatically or manually open and close the communication port 17 can be installed in a minimum space. Therefore, the opening / closing member 18A can be installed while maintaining the unit dimensions without expanding the power source chamber 4 side or the heat exchanger chamber 5 side.

  (2) In the first embodiment, the opening / closing member 18 is provided on the power source chamber 4 side, which is considered to be frequently removed and easily attached and detached, but is provided on the power source chamber 4 side. In consideration of the installation space and the like, the opening / closing member 18B may be installed on the heat exchanger chamber 5 side as shown in FIG. Also by this, the same effect as the first embodiment can be expected. In particular, when there is room on the heat exchanger chamber 5 side compared to the power source chamber 4 side in space, the opening / closing member 18B is installed on the heat exchanger chamber 5 side so that it can be automatically opened and closed by an actuator. It is preferable.

  (3) In the first embodiment, when an abnormality occurs in the radiator cooling fan 8 that is the blower on the power source chamber 4 side, the blower 13 on the heat exchanger chamber 5 side is removed by removing or opening the opening / closing member 18. However, at this time, as shown in FIG. 7, the radiator cooling fan 8A is configured to be detachable, and the opening / closing member 18 is removed or opened. At the same time, the radiator cooling fan 8A may be removed.

  In this way, the radiator cooling fan 8A is made detachable, and when the cooling fan 8A is abnormal, it is removed to take outside air into the power source chamber 4 side through the blower 13 on the heat exchanger chamber 5 side. Therefore, the air cooling function for the power source 6 can be maintained and the operation can be continued to prevent the damage of the load.

  (4) As shown in (3) above, not only the radiator cooling fan 8A in which an abnormality has occurred (failed) is removed, but also the outer surface enclosing the outer periphery of the power source chamber 4 as shown in FIG. The left and right side panels 9A and 9B, which are part of the panel 9, may be configured to be detachable, and the left and right side panels 9A and 9B may be removed simultaneously with the opening / closing member 18 being removed or opened. In this case, the radiator cooling fan 8A may be removed at the same time.

  Thus, when an abnormality occurs in the radiator cooling fan 8A, which is a blower on the power source chamber 4 side, as shown in FIG. 8B, the outer panel 9 enclosing the outer periphery of the power source chamber 4 is closed. By removing the left and right side panels 9A and 9B, which are a part of the heat exchanger chamber 5, the outside air can be more easily taken into the power source chamber 4 via the blower 13 on the heat exchanger chamber 5 side. Therefore, it is possible to continue the operation while maintaining the air cooling function for the power source 6 and to prevent damage to the load.

  (5) In the above embodiment, when the transport refrigeration unit 1 is in a cooling operation, the opening / closing member 18 is used as a countermeasure when an abnormality occurs in the radiator cooling fan 8 that is a blower on the power source chamber 4 side. Although an example of removing or opening and sucking / extracting outside air to / from the power source chamber 4 via the blower 13 on the heat exchanger chamber 5 side and air-cooling the power source 6 has been described. 17, and the opening / closing member 18 is installed at the communication port 17, so that when the transport refrigeration unit 1 is operated by heat pump heating, the heat of the outside air whose temperature has been increased by air-cooling the power source 6 in the power source chamber 4. Can be effectively utilized for heat pump heating operation to improve the heating capacity.

In recent years, even in the transport refrigeration unit 1, when heating and transporting a load, a heating operation is performed with a heat pump cycle. In this case, the internal heat exchanger is a condenser, and the external heat exchanger 12 is an evaporator, which operates by absorbing heat from the outside air. Problems such as frost formation on the external heat exchanger 12 occur.
In the present embodiment, the power source 6 is air-cooled on the power source chamber 4 side by using the communication port 17 and the opening / closing member 18 and removing or opening the opening / closing member 18 during the heat pump heating operation as shown in FIG. By doing so, the outside air whose temperature has been increased is taken into the heat exchanger chamber 5 and is ventilated to the outside heat exchanger 12.

  As a result, during heat pump heating operation, the outside heat exchanger 12 that functions as an evaporator absorbs heat from outside air that has risen in temperature, pumps heat, and radiates the heat from the inside heat exchanger that functions as a condenser to the interior. The cargo can be heated. Therefore, when the transport refrigeration unit 1 is operated by heat pump heating, the communication port 17 and the opening / closing member 18 can be effectively used to improve the heating capability and suppress frost formation on the external heat exchanger 12. can do.

  In addition, this invention is not limited to the invention concerning the said embodiment, In the range which does not deviate from the summary, it can change suitably. For example, in the above-described embodiment, the example of the transport refrigeration unit 1 of the type mounted on the front surface of the container has been described. However, an integrated transport refrigeration unit equipped with another power generation source or an undermount transport Needless to say, the present invention can be similarly applied to the refrigeration unit.

  Moreover, although the thing using the propeller fan as an air blower was illustrated in the said embodiment, it is not limited to this, Of course, you may use another fan, also about other component equipments. It is the same.

DESCRIPTION OF SYMBOLS 1 Refrigeration unit for transport 2 Unit main body 3 Partition wall 4 Power source room 5 Heat exchanger room 6 Power source (engine, induction motor, compressor)
8,8A Radiator cooling fan (power source room side blower)
9 External panel 9A, 9B Left and right side panel 12 External heat exchanger 13 Blower 17 Communication port 18, 18A, 18B Opening / closing member 19 Guide groove

Claims (6)

The unit main body is divided into a power source room in which an engine, an induction motor, and a compressor, which are power sources, are arranged, and a heat exchanger room in which an external heat exchanger and a blower are arranged. In the refrigeration unit,
The power source chamber and the heat exchanger chamber are each configured such that outside air can be circulated independently via a blower, and a communication port is provided in a partition wall that partitions the two chambers,
An opening / closing member for opening / closing the communication port is provided at the communication port so as to be opened / closed or detachable. A transport refrigeration unit characterized in that it can be distributed.   2. The transport refrigeration unit according to claim 1, wherein the opening / closing member is opened or removed automatically or manually when an abnormality occurs in the blower on the power source chamber side.   At least a part of the blower on the power source chamber side and / or the outer panel covering the outer surface of the power source chamber is detachably provided, and the blower on the power source chamber side is removable when abnormal. The transport refrigeration unit according to claim 2, wherein:   4. The transport refrigeration unit according to claim 1, wherein the blower on the power source chamber side is also used as a cooling fan for a radiator of the engine.   When the external heat exchanger functions as an evaporator and the refrigeration unit is operated by heat pump heating, the open / close member is opened or removed, and the outside air warmed on the power source chamber side is taken into the heat exchanger chamber side. The transport refrigeration unit according to claim 1, wherein the transport refrigeration unit is made possible. 6. The transport refrigeration unit according to claim 1, wherein the opening / closing member is slidably installed along a wall surface of the partition wall.

Images