JP7175685B2 - Refrigerator unit for cold storage vehicle - Google Patents

Description

TECHNICAL FIELD The present invention relates to a refrigerator unit for a cold-storage vehicle.

As a cold storage vehicle, for example, a trailer having a trailer body, a tractor for towing the trailer, and a refrigerator unit arranged on the front side of the front wall of the trailer body for cooling the inside of the trailer body (refrigeration unit for cold storage vehicle). And there is a thing with.

Patent Literature 1 discloses a configuration in which an engine and a generator are provided in a tractor, and a battery is arranged on the lower surface side of a trailer body away from the engine.

Japanese Patent Application Laid-Open No. 2001-324254

When the engine battery is placed away from the engine (or the engine generator) as in Patent Document 1, the temperature rise of the engine battery is suppressed, so deterioration of the battery due to the temperature rise can be suppressed. becomes.

However, when the engine (or the engine generator) and the engine battery are arranged separately as in Patent Document 1, the distance between the engine (or the engine generator) and the engine battery becomes long. put away. For this reason, there is a possibility that the starting performance of the engine may deteriorate due to the voltage drop.

On the other hand, when the engine (or the engine generator) and the engine battery are arranged close to each other, the temperature of the engine battery may rise and the deterioration of the engine battery may progress.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a refrigerator unit for a cold-insulated vehicle that is capable of suppressing a temperature rise of an engine battery while suppressing a decrease in starting performance of an engine or an engine generator.

In order to solve the above-described problems, a refrigerator unit for a cold-insulated vehicle according to an aspect of the present invention includes a housing that separates a first space and a second space, and a housing that is arranged in the first space. A first air blower that blows air into one space from the outside , an outdoor heat exchanger that is arranged in the first space and supplied with the air by the air blower, and an engine that is arranged in the second space. a generator, an engine battery arranged in the second space, a battery housing box arranged in the second space for housing the engine battery, and a space between the first space and the battery housing box. and a blower pipe for supplying air blown by the first blower to the space , wherein the housing is provided with air from the outside of the housing to the second space and an air outlet for introducing air from the second space to the outside of the housing. Air is introduced into the second space through the air inlet further comprising a second blower that sends
The battery storage box is formed with an outlet for leading the air introduced into the space to a downstream side of the air flow by the second blower from the engine generator in the second space. there is

According to the present invention, by arranging the engine generator and the engine battery in the second space in the housing, it is possible to arrange the engine generator and the engine battery closer to each other. As a result, it is possible to suppress the deterioration of the starting performance of the engine generator.
Further, the air is supplied to the engine battery by having the battery housing box for housing the engine battery and the air pipe for supplying the air blown by the first blower to the space in the battery housing box. , the engine battery can be cooled. Thereby, the temperature rise of the engine battery can be suppressed.
In other words, it is possible to suppress the temperature rise of the engine battery while suppressing the deterioration of the starting performance of the engine generator.
Furthermore, by forming an outlet port for leading air to the outside of the battery housing box in the battery housing box, the air is supplied into the battery housing box, contributing to cooling of the engine battery and raising the temperature.
It becomes possible to lead the rising air to the outside of the battery housing box.
As a result, the engine battery can be efficiently cooled using the air supplied to the battery housing box.
Further, by forming the air inlet and the air outlet in the housing, the air that has flowed in through the air inlet can be discharged to the outside of the housing through the air outlet. As a result, it is possible to prevent air whose temperature has risen (air that has contributed to cooling) from staying in the second space.
Furthermore, by providing a second blower that sends air to the second space through the air inlet, the engine generator and the battery storage box can be cooled by the air sent to the second space. At the same time, the air that has contributed to cooling can be led out of the housing from the air outlet.

Further, in the refrigerator unit for a cold-insulated vehicle according to one aspect of the present invention, the first air blower and an outdoor heat exchanger are provided in the first space,
An introduction portion, which is an inlet of the blower pipe, may be arranged between the first blower and the outdoor heat exchanger.

In this way, by arranging the introduction part, which is the inlet of the blower pipe, between the first air blower and the outdoor heat exchanger, the air before heat exchange with the outdoor heat exchanger is passed through the introduction part of the blower pipe. It becomes possible to supply air (air before the temperature rises due to heat exchange) to the engine battery housed in the battery housing box. As a result, the engine battery can be efficiently cooled.

Further, the refrigerator unit for a refrigerated vehicle according to the aspect of the present invention further includes a connection pipe that connects the battery storage box and the engine generator and through which air flows,
The connection pipe may be an intake pipe of the engine generator.

Thus, by having the connection pipe functioning as the intake pipe of the engine generator, the engine generator can be cooled using the air that has flowed into the battery storage box.

Advantageous Effects of Invention According to the present invention, it is possible to suppress a temperature rise of an engine battery while suppressing deterioration in starting performance of an engine or an engine generator.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view showing a schematic configuration of a refrigerating vehicle provided with a refrigerating machine unit for a refrigerating vehicle according to a first embodiment of the present invention; FIG. 2 is a cross-sectional view showing the refrigerator unit for a cold-insulated vehicle when the housing shown in FIG. 1 is cut along line B ₁ -B ₂ ; FIG. 3 is a cross-sectional view of the structure shown in FIG. 2 taken along line C ₁ -C ₂ ; FIG. 4 is a cross-sectional view showing a refrigerator unit for a cold-insulated vehicle according to a modification of the first embodiment of the present invention; FIG. 5 is a cross-sectional view of a refrigerator unit for a cold-insulated vehicle according to a second embodiment of the present invention;

(First embodiment)
A refrigerated vehicle 10 equipped with a refrigerated vehicle refrigerator unit 15 of the first embodiment will be described with reference to FIGS. 1 to 3. FIG. In FIG. 1, the X direction indicates the length direction of the refrigerated vehicle 10, and the Z direction indicates the height direction of the refrigerated vehicle 10 orthogonal to the X direction.
In FIG. 2, for convenience of explanation, the blower pipe 34 and the battery storage box 35 are shown in cross section. 2 and 3, the Y direction indicates the width direction of the refrigerated vehicle 10 orthogonal to the X direction. In FIGS. 2 and 3, solid arrows indicate the direction of air flow. In FIG. 3 , dotted arrows indicate the moving direction of the refrigerant flowing through the refrigeration cycle 33 .

The refrigerated vehicle 10 includes a tractor 11, a trailer 12, and a refrigerated vehicle refrigerator unit 15. - 特許庁
The tractor 11 has a cab 17 which is a driver's seat. A tractor 11 tows a trailer 12 .

The trailer 12 has a trailer body 22 and a chassis 23 .
The trailer body 22 is a box-shaped container supported from below by a chassis 23 . The trailer body 22 extends in the X direction, and has a space S inside for accommodating cargo (not shown).

The trailer body 22 is arranged to face a front wall 22A arranged on the tractor 11 side, a ceiling wall 22B connected to the upper end of the front wall 22A in the Y direction, and a lateral wall connected to the front wall 22A and the ceiling wall 22B. 22C and 22D.
The front wall 22A is arranged outside the trailer body 22 and has a front surface 22Aa to which the housing 31 constituting the refrigerator unit 15 for a cold-storage vehicle is fixed.

The chassis 23 is provided on the bottom surface of the trailer body 22 . The chassis 23 extends in the X direction.

The refrigerator unit 15 for a cold storage vehicle includes a housing 31, a refrigerating cycle 33, an air duct 34, a battery storage box 35, an engine battery 37, an engine generator 39, a soundproof wall 45, and a second and a blower 47 .

The housing 31 has a housing body 51 and a partition plate 52 .
The housing main body 51 has a box shape and is provided on the front surface 22Aa of the front wall 22A. The housing body 51 has a first space S<b>1 , a second space S<b>2 , a first side wall 54 and a second side wall 55 .

The second space S2 is arranged below the first space S1. The first and second side walls 54, 55 are arranged to face each other across the first and second spaces S1, S2 in the Y direction.

The first side wall 54 is formed with air inlets 54A and 54B.
The air inlet 54A is formed in a portion of the first side wall 54 exposed to the first space S1. The air inlet 54A is an opening for introducing the air existing outside the housing 31 into the first space S1.
The air inlet 54B is formed in a portion of the first side wall 54 exposed to the second space S2. The air inlet 54B is an opening for introducing the air existing outside the housing 31 into the second space S2.

The second side wall 55 is formed with air outlets 55A and 55B.
55 A of air outlets are formed in the part exposed to 1st space S1 among the 2nd side walls 55. As shown in FIG. The air outlet 55A is an opening for leading the air existing in the first space S1 to the outside of the housing 31. As shown in FIG.
The air outlet 55B is formed in a portion of the second side wall 55 exposed to the second space S2. The air outlet 55B is an opening for leading the air existing in the second space S2 to the outside of the housing 31. As shown in FIG.

By having the air inlet 54B and the air outlet 55B, the air (outside air) that has flowed in from the air inlet 54B can be led out of the housing 31 through the air outlet 55B. As a result, it is possible to prevent the air whose temperature has risen from staying in the second space S2.

The partition plate 52 is provided inside the housing body 51 so as to separate the first space S1 and the second space S2.
The partition plate 52 is formed with an opening 52A into which the blower tube 34 is inserted and a portion of the blower tube 34 is fixed. 52 A of opening parts are formed in the part located between the 1st air blower 65 and the outdoor heat exchanger 66 which comprise the refrigeration cycle 33 among the partition plates 52. As shown in FIG.

The refrigeration cycle 33 includes an accumulator 61, a compressor 63, a first blower 65, an outdoor heat exchanger 66, a receiver 68, expansion valves 71 and 72, indoor heat exchangers 74 and 75, and indoor heat exchange fans 77 and 78;

The accumulator 61 is arranged in the first space S1. The accumulator 61 is connected to the indoor heat exchangers 74 and 75 so as to receive the refrigerant that has passed through the indoor heat exchangers 74 and 75 .

The compressor 63 is arranged in the first space S1. Compressor 63 is connected to accumulator 61 so as to be able to receive the refrigerant that has passed through accumulator 61 . Compressor 63 compresses the refrigerant supplied from accumulator 61 .
The compressor 63 is connected to the outdoor heat exchanger 66 in a state capable of supplying compressed refrigerant (hereinafter referred to as “compressed refrigerant”) to the outdoor heat exchanger 66 .

The first blower 65 is an outdoor heat exchange fan. The first blower 65 is arranged in the first space S1 so as to face the air introduction port 54A. The first blower 65 takes air from outside the housing 31 into the first space S1 through the air inlet 54A and supplies the taken air to the outdoor heat exchanger 66 .

The outdoor heat exchanger 66 is arranged in the first space S1.
The outdoor heat exchanger 66 cools the compressed refrigerant by exchanging heat between the compressed refrigerant and the air (outside air) supplied from the first blower 65 . The air that has contributed to cooling the compressed refrigerant is discharged to the outside of the housing 31 via the air discharge port 55A. The outdoor heat exchanger 66 is connected to the receiver 68 so as to be able to supply cooled compressed refrigerant (hereinafter referred to as “cooling refrigerant”) to the receiver 68 .

The receiver 68 is connected to the expansion valves 71 and 72 in a state capable of supplying cooled refrigerant to the expansion valves 71 and 72 .
The expansion valves 71 and 72 are housed inside the trailer body 22 . The expansion valve 71 is arranged at the upper portion of the corner formed by the lateral wall 22C and the front wall 22A (the portion near the top wall 22B). The expansion valve 71 expands (decompresses) the cooling refrigerant supplied from the receiver 68 . The expansion valve 71 is connected to the indoor heat exchanger 74 so as to supply the expanded cooling refrigerant to the indoor heat exchanger 74 .

The expansion valve 72 is connected to the indoor heat exchanger 75 so as to supply the expanded cooling refrigerant to the indoor heat exchanger 75 .

The indoor heat exchangers 74 and 75 are housed within the trailer body 22 .
The indoor heat exchanger 74 is arranged near the expansion valve 71 (that is, above the lateral wall 22C). The indoor heat exchanger 74 uses the expanded refrigerant to cool the air within the trailer body 22 .
The indoor heat exchanger 75 is arranged near the expansion valve 72 (that is, above the lateral wall 22D). The indoor heat exchanger 75 cools the air inside the trailer body 22 using the expanded refrigerant.

The indoor heat exchange fans 77 and 78 are housed inside the trailer body 22 .
The indoor heat exchange fan 77 is arranged near the indoor heat exchanger 74 (that is, above the lateral wall 22C). The indoor heat exchange fan 77 cools the space S formed within the trailer body 22 by supplying the air cooled by the indoor heat exchanger 74 into the trailer body 22 .

The indoor heat exchange fan 78 is arranged near the indoor heat exchanger 75 (that is, above the lateral wall 22D). The indoor heat exchange fan 78 cools the space S formed within the trailer body 22 by supplying the air cooled by the indoor heat exchanger 75 into the trailer body 22 .

The blower pipe 34 is fixed to the partition plate 52 while being inserted into the opening 52A. An introduction portion 34A (one end) of the blower pipe 34 is arranged in the first space S1. Part of the air sent from the first blower 65 to the outdoor heat exchanger 66 is introduced into the introduction portion 34A.
A lead-out portion 34B (the other end), which is the outlet of the blower pipe 34, is arranged in the second space S2. The lead-out portion 34B is connected to the introduction port 35A of the battery housing box 35 . The lead-out portion 34B guides air into the battery housing box 35 in which the engine battery 37 is housed.
The blower pipe 34 communicates the first space S<b>1 and the space inside the battery housing box 325 .

The introduction part 34A of the blower pipe 34 configured as described above is preferably arranged between the first blower 65 and the outdoor heat exchanger 66 .
In this way, by arranging the introduction portion 34A of the blower pipe 34 between the first air blower 65 and the outdoor heat exchanger 66, the outdoor heat exchanger 66 and It becomes possible to supply cold air before heat exchange to the engine battery 37 housed in the battery housing box 35 . As a result, the engine battery 37 can be efficiently cooled.

The battery housing box 35 is arranged in the second space S2. The battery housing box 35 is a box body for housing the engine battery 37 .
The battery housing box 35 has an inlet 35A and an outlet 35B. 35 A of introduction ports are formed in the upper end of the battery storage box 35. As shown in FIG. The lead-out port 35B is formed at the lower end of the battery housing box 35. As shown in FIG.

Thus, by forming the outlet port 35B for leading the air to the outside of the battery housing box 35 in the battery housing box 35, the air is supplied into the battery housing box 35 and contributes to the cooling of the engine battery 37, thereby increasing the temperature. It becomes possible to lead the rising air out of the battery housing box 35 .
As a result, the air supplied to the battery storage box 35 can be used to efficiently cool the engine battery 37 .

The engine battery 37 is electrically connected to the engine generator 39 while being housed in the battery housing box 35 .

The engine generator 39 has an engine 39A and a generator 39B. The engine generator 39 is arranged in the second space S2. The engine generator 39 is arranged near the engine battery 37 .
By arranging the engine generator 39 near the engine battery 37 in this way, it is possible to suppress deterioration in the starting performance of the engine generator 39 .

As the engine generator 39, for example, the engine 39A and the generator 39B are arranged in series in the direction along the axis of the crankshaft of the engine 39A (the engine 39A and the generator 39B are integrated). can be used.

The soundproof wall 45 is provided in the second space S2 with its upper end supported by the partition plate 52 . A gap is formed between the lower end of the soundproof wall 45 and the housing body 51 to allow air to flow. The outer surface of the soundproof wall 45 faces the air inlet 54B and the air outlet 55B.
The soundproof wall 45 is a cylindrical member, and surrounds the blower pipe 34, the battery storage box 35, and the engine generator 39 which are arranged in the second space S2. The soundproof wall 45 is a wall for suppressing leakage of noise generated from the engine generator 39 to the outside.

The second blower 47 is provided in a portion of the second space S2 facing the air inlet 54B. The second blower 47 is a blower for sending air (outside air) outside the housing 31 into the second space S2 (including the portion surrounded by the soundproof wall 45) through the air inlet 54B. .

By providing the second blower 47 having such a configuration, the engine generator 39 and the battery storage box 35 can be cooled by the air sent to the second space S2, and the engine generator 39 can be cooled. , the battery storage box 35 and the engine battery 37 (temperature-increased air) can be led out of the housing 31 through the air outlet 55B.

According to the cold storage vehicle refrigerator unit 15 of the first embodiment, by disposing the engine generator 39 and the engine battery 37 in the second space S2 in the housing 31, the engine generator 39 and the engine battery 37 are arranged. It is possible to arrange the battery 37 closer to the battery 37 . As a result, it is possible to suppress the deterioration of the start-up performance of the engine generator 39 .

Further, by having a battery storage box 35 that stores an engine battery 37 and a blower pipe 34 that supplies the air (outside air) blown by the first blower 65 to the space inside the battery storage box 35, the engine It becomes possible to cool the battery 37 with air. Thereby, the temperature rise of the engine battery 37 can be suppressed.
That is, it is possible to suppress the temperature rise of the engine battery 37 after suppressing the deterioration of the start-up performance of the engine generator 39 .

The refrigerating cycle 33 shown in FIGS. 2 and 3 is an example, and the configuration of the refrigerating cycle 33 is not limited to the configuration shown in FIGS.
2 and 3, as an example, the case where the first blower 65 and the outdoor heat exchanger 66 are arranged to face each other in the Y direction has been described. The direction in which the container 66 is arranged is not limited to the Y direction.
Further, in the present embodiment, as an example, the case where the accumulator 61 and the compressor 63 are arranged in the first space S1 has been described. It suffices if it is arranged in either one of the second spaces S2.

Next, a refrigerator unit 85 for a cold-insulated vehicle according to a modification of the first embodiment will be described with reference to FIG. In FIG. 3, only the housing 31, the blower pipe 34, the battery housing box 35, the connecting pipe 87, and the soundproof wall 45 are shown in cross section.

The cold storage vehicle refrigerator unit 85 has the same configuration as the cold storage vehicle refrigerator unit 15 except that a connecting pipe 87 and a filter 89 are added to the configuration of the cold storage vehicle refrigerator unit 15 of the first embodiment. It is

The connecting pipe 87 has one end connected to the outlet port 35B and the other end connected to the engine 39A. The connection pipe 87 has a filter housing portion 87A in which the filter 89 is arranged. The connection pipe 87 configured as described above functions as an intake pipe for the engine generator 39 .
The filter 89 prevents dust and the like from entering the engine 39A together with the air.

According to the cold storage vehicle refrigerator unit 85 according to the modified example of the first embodiment, the connection pipe 87 having one end connected to the outlet port 35B and the other end connected to the engine 39A provides The air used for cooling the engine battery 37 can be reused to cool the engine generator 39 .

In FIG. 4, as an example, one end of the connection pipe 87 is connected to the outlet 35B, but one end of the connection pipe 87 is You may connect with parts other than outlet 35B.

Specifically, for example, one end of the connection pipe 87 may be connected to the side wall of the battery housing box 35 . By connecting one end of the connecting pipe 87 to the side wall of the battery housing box 35 in this way, it is possible to supply the engine 39A with air having a lower temperature than the air discharged from the discharge port 35B. . As a result, the engine 39A can be efficiently cooled.

(Second embodiment)
A refrigerator unit 95 for a cold-insulated vehicle according to a second embodiment will be described with reference to FIG. In FIG. 5, the same components as those of the structure shown in FIG. 2 are denoted by the same reference numerals.

The refrigerator unit 95 for a cold-insulated vehicle according to the second embodiment has an engine 96 arranged in the second space S2 instead of the engine generator 39 that constitutes the refrigerator unit 15 for a cold-insulated vehicle according to the first embodiment. It is configured in the same manner as the refrigerator unit 15 for a cold-insulated vehicle except that it has a .

The cold-insulated vehicle refrigerator unit 95 having such a configuration can obtain the same effects as the cold-insulated vehicle refrigerator unit 15 of the first embodiment described above.

Although the preferred embodiments of the present invention have been described in detail above, the present invention is not limited to such specific embodiments, and various modifications can be made within the scope of the invention described in the scope of the claims. Transformation and change are possible.

For example, an engine 96 shown in FIG. 5 may be provided in place of the engine generator 39 that constitutes the refrigerator unit 85 for a cold storage vehicle shown in FIG.
In this case, the same effect as that of the refrigerator unit 85 for a cold-insulated vehicle can be obtained.

DESCRIPTION OF SYMBOLS 10... Insulated vehicle 11... Tractor 12... Trailer 15, 85, 95... Refrigerator unit for insulated vehicle 17... Cab 22... Trailer body 22A... Front wall 22Aa... Front surface 22B... Ceiling wall 22C, 22D... Side wall 23... Chassis 31... Case 33 Refrigeration cycle 34 Blower pipe 34A Introduction part 34B Lead-out part 35 Battery housing box 35A Inlet 35B Outlet 37 Battery for engine 39 Engine generator 39A Engine 39B Generator 45 Soundproof wall 45a Outer surface 47 Second blower 51 Housing body 52 Partition plate 52A Opening 54 First side wall 54A, 54B Air inlet 55 Second side wall 55A, 55B Air outlet DESCRIPTION OF SYMBOLS 61... Accumulator 63... Compressor 65... 1st air blower 66... Outdoor heat exchanger 68... Receiver 71, 72... Expansion valve 74, 75... Indoor heat exchanger 77, 78... Indoor heat exchange fan 87... Connecting pipe 89... Filter 96... Engine S... Space S1... First space S2... Second space

Claims (3)

a housing that separates the first space and the second space;
a first blower disposed in the first space for blowing air into the first space from the outside ;
an outdoor heat exchanger arranged in the first space and supplied with the air by the blower;
an engine generator arranged in the second space;
an engine battery arranged in the second space;
a battery housing box disposed in the second space and housing the engine battery;
a blower pipe that communicates the first space with a space inside the battery housing box and supplies air blown by the first blower to the space;
with
The housing is formed with an air inlet for introducing air from the outside of the housing into the second space, and an air outlet for discharging air from the second space to the outside of the housing. has been
Further comprising a second blower that sends air to the second space through the air inlet,
The battery storage box is formed with an outlet for leading the air introduced into the space to a downstream side of the air flow by the second blower from the engine generator in the second space. refrigeration units for refrigerated vehicles. Arranged in the first space, and comprising the first blower and an outdoor heat exchanger,
2. The refrigerator unit for a refrigerating vehicle according to claim 1 , wherein an introduction portion, which is an inlet of the blower pipe, is arranged between the first blower and the outdoor heat exchanger. further comprising a connection pipe that connects the battery housing box and the engine generator and through which air flows;
3. The refrigerator unit for a cold storage vehicle according to claim 1, wherein the connection pipe is an intake pipe of the engine generator.

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