JP6344232B2 - Temperature control storage device - Google Patents

Description

  The present invention relates to a temperature control storage device that adjusts the temperature of a stored item stored in a storage space in a housing to a desired temperature, for example, a technique suitable for use in precooling agricultural products.

(Conventional technology)
Refrigeration apparatuses, refrigeration apparatuses, and refrigeration apparatuses are known as temperature control storage apparatuses that adjust the temperature of an item accommodated in an accommodation space in a housing to a desired temperature.
A specific example of the prior art will be described using precooling of agricultural products (vegetables, fruits, etc.).

Agricultural products are pre-cooled before shipping. As a typical precooling method, a relatively inexpensive forced ventilation method is widely used (see Patent Document 1).
The forced ventilation method is a method in which cold air from a refrigerator is blown into a storage space to cool a stored item (for example, cardboard containing agricultural products).

(Problems of conventional technology)
However, the forced ventilation method described above is a method in which cool air is blown into the accommodation space to cool the contents, and thus it takes a long time to cool to 0 to 10 ° C., which is a general temperature for pre-cooling. End up.
Moreover, since the cold air blown out from the blowout outlet is difficult to circulate by the stored items loaded in the storage space, temperature unevenness is likely to occur in the storage space, and cooling unevenness is likely to occur in the agricultural products.

As a specific example, when pre-cooling the harvested agricultural product using a pre-cooling device in which a cold air outlet and a suction port are provided at opposite positions of the accommodation space, the core temperature of the agricultural product is cooled to a desired temperature range as soon as possible. Is desired.
However, since agricultural products freeze when they fall below 0 ° C, the temperature of cold air cannot be lowered to 0 ° C or lower.

Therefore, even if pre-cooling is started, the maximum capacity of the refrigerator is limited only in a short time (see period B in FIG. 4B) until the blowing temperature {see solid line A in FIG. 4B) reaches 0 ° C. The cool-down mode that allows you to drive in is not possible.
Therefore, after the blowing temperature reaches 0 ° C. {after the elapse of period B in FIG. 4 (b)}, the capacity control mode in which the capacity of the refrigerator is limited is indicated by a solid line C in FIG. 4 (b). As described above, it takes a long cooling time to cool the core temperature of the agricultural product to a desired temperature range.

JP 2005-291602 A

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a temperature-controlled storage device that can adjust the temperature of a stored item to a desired temperature in a short time without unevenness while adopting a forced ventilation method. Is in the provision of.

The temperature control storage device of the present invention is
-Forward rotation operation for sucking air in the housing space from the suction port while blowing conditioned air (temperature-controlled air flow: for example, cold air) from the air outlet to the housing space;
・ Reverse action of sucking in air in the housing space from the outlet while blowing air-conditioned air from the suction port into the housing space;
There is provided a forward / reverse switching means for alternately switching.
Further, the temperature control storage device of the present invention includes a blower side temperature sensor and a suction port side temperature sensor, and further performs forward rotation based on the detected temperatures of the blower side temperature sensor and the suction port side temperature sensor. And a control device for switching between the reverse rotation operation and the reverse rotation operation.
The control device performs the forward rotation operation until the temperature detected by the air outlet side temperature sensor is lowered to the target temperature when performing pre-cooling for cooling the items accommodated in the accommodation space within a predetermined temperature range. Alternately, forward max cool operation that operates at maximum capacity and reverse max cool operation that operates the refrigerator at maximum capacity while performing reverse operation until the detected temperature of the inlet side temperature sensor falls to the target temperature A cool-down mode for switching can be executed.

  Accommodates in the accommodation space by alternately performing forward rotation operation to apply temperature-controlled air to the container from the side close to the air outlet and reverse rotation operation to apply temperature-controlled air to the object from the side near the air inlet. It is possible to adjust the temperature of the contained items in a wide range to a desired temperature in a short time without unevenness. That is, the temperature control storage device of the present invention employs a forced ventilation system, and can adjust the temperature of the stored item to a desired temperature in a short time without unevenness.

(Example 1) which is the schematic of the temperature control storage apparatus which accommodates a thing. It is the schematic of a temperature control storage apparatus (Example 1). (A) Sectional drawing of temperature control storage device, (b) Explanatory drawing seen from door side of temperature control storage device, (c) Explanatory drawing of usage example of shutter means (Example 1). (A) Time chart showing the relationship between the operating state of the refrigerator, the blowing temperature, and the core temperature of the agricultural product in Example 1, (b) The operating state, the blowing temperature, and the core of the agricultural product in the conventional example It is a time chart which shows the relationship with temperature. (Example 2) which is operation | movement explanatory drawing of the temperature control storage apparatus which has two sets of blower outlets and suction inlets.

  EMBODIMENT OF THE INVENTION Below, the form for inventing is demonstrated in detail based on drawing.

  An embodiment of a temperature control storage device to which the present invention is applied will be described. In addition, the Example disclosed below discloses a specific example, and it is needless to say that the present invention is not limited to the Example. Of course, the numerical values disclosed in the embodiments are examples for assisting understanding.

[Example 1]
A first embodiment will be described with reference to FIGS.
The temperature control storage device is a refrigeration container in which a refrigerator 2 is assembled to a casing 1 that has a heat insulation structure for freezing or refrigeration, and a storage space (internal space of the casing 1) by the operation of the refrigerator 2. ) Can be refrigerated to a desired temperature.

  An example of the container α is to store agricultural products (vegetables, fruits, etc.) in a plastic container (a plastic box that fits in the vertical direction and has a substantially mesh-shaped ventilation surface on the side and bottom) that can be laminated. In this state, a large number of plateaus containing agricultural products are stacked in the housing space of the housing 1 in a state where they are overlapped in the left, right, front, rear, top and bottom directions.

  A specific example of the housing 1 is a short marine container or a vehicle-mounted container, and has a substantially rectangular parallelepiped shape that can be transported independently. In the following, for convenience of explanation, the door 3 side of the housing 1 is “rear”, the side away from the door 3 is “front”, the floor side is “lower”, the ceiling side is “upper”, and the right side when viewed from the door 3 side. Is referred to as “right”, and the left side as viewed from the door 3 side is referred to as “left”. These directions are for explaining the embodiments and are not limited.

The refrigerator 2 is operated by receiving power from a commercial power source or a dedicated power source for containers. The refrigeration unit 2 includes a refrigeration cycle, a cold air production duct 4, a condenser fan, an evaporator fan 5, a control device, etc., as a unit. It is assembled at the front position.
The refrigeration cycle is configured using an electric compressor, a refrigerant condenser (condenser), a pressure reducing device (expansion valve), a refrigerant evaporator 6 (evaporator), and the like.

The electric compressor is configured by combining an electric motor (for example, a three-phase AC motor) and a refrigerant compressor, and drives the refrigerant compressor by the electric motor, and the electric motor is mainly controlled by the control device. Thus, the temperature of the accommodation space is controlled by controlling the cooling capacity of the refrigeration cycle.
The cold air manufacturing duct 4 is an air passage that extends in the vertical direction and is attached to the front portion of the housing 1. Specifically, the cold air production duct 4 is a passage member that sucks air in the accommodation space and returns it to the accommodation space, and the refrigerant evaporator 6 is disposed therein.

The condenser fan is an electric fan that forcibly exchanges heat between the refrigerant condenser and the outside air (outside air of the housing 1), and is energized and controlled by the control device.
The evaporator fan 5 is an electric fan that sucks the air in the accommodation space into the cold air production duct 4 and blows out the air (cold air) that has passed through the refrigerant evaporator 6 again into the accommodation space, and is energized and controlled by the control device.

  The temperature control storage device according to the first embodiment includes an air outlet 7 that blows out cold air (an example of air-conditioned air) created by the refrigerator 2 into the housing space, and an inlet 8 that returns the air in the housing space to the refrigerator 2. Is provided. Specifically, in Example 1, the blower outlet 7 and the suction inlet 8 are provided in the position which opposes via an accommodation space. As a more preferable form, in this Example 1, the blower outlet 7 and the suction inlet 8 are provided in the diagonal position of accommodation space.

  A specific structure will be described with reference to FIGS. 2 and 3A. The blower outlet 7 is provided along the lower edge of the rear end of the accommodation space. Moreover, the suction inlet 8 is provided along the upper edge of the front end of accommodation space. For this reason, as shown in FIG. 1, the cold air blown out from the blowout port 7 is sucked in from the suction port 8 after passing through all the stored items α stored in the storage space.

As described above, in the temperature control storage device according to the first embodiment, the air outlet 7 is provided along the lower edge of the rear end of the accommodation space. On the other hand, the refrigerator 2 is unitized and assembled at the front position of the housing 1.
For this reason, the cold wind guide passage 10 for guiding the cold wind from the cold wind outlet of the cold wind production duct 4 to the blowout port 7 at the lower edge of the rear end of the housing space is required.

As shown in FIG. 3B, a plurality of T-shaped rails 11 are provided in advance on the floor surface of the housing 1. Therefore, in the first embodiment, the cold air guide passage 10 is provided using a plurality of T-shaped rails 11.
Specifically, the T-shaped rail 11 extends in the front-rear direction, and a slit extending in the front-rear direction is provided between the upper surface of the T-shaped rail 11 and the upper surface of the adjacent T-shaped rail 11. If this slit is an existing refrigerated container, it is used as a blowout slit for cold air. However, in this embodiment 1, in order to guide the cold air to the blowout port 7 at the lower edge of the rear end of the housing space, it is blown out to the floor surface. There should be no slits.

  Therefore, in the first embodiment, the upper surface of the plurality of T-shaped rails 11 is covered with the plate material 12 (material is not limited) to block the blowing slit, and the space between the plurality of T-shaped rails 11 is used as the cold air guide passage 10. ing. By adopting this structure, it is possible to reduce the implementation cost of the temperature control storage device in which the blowout port 7 and the suction port 8 are arranged at diagonal positions.

The temperature control storage device according to the first embodiment is provided with a shutter unit 13 that closes an upper gap generated in the upper portion of the accommodation α and a lateral width gap generated in the left-right direction of the accommodation α.
Although the structure and material of the shutter means 13 are not limited, an example provided by a flexible film member will be described in the first embodiment as an example of assisting understanding.
The shutter means 13 of the first embodiment is made of, for example, a resin having a predetermined thickness (for example, a thick vinyl film), and the left and right widths are provided so as to coincide with the left and right widths of the accommodation space.
The shutter unit 13 hangs down from the ceiling on the rear side of the housing space. As an example, the shutter unit 13 hangs down and is provided with the lower end reaching the floor surface.
The shutter means 13 is provided with a plurality of vertical slits 13a (cuts) extending in the vertical direction, and the shutter means 13 is divided into a plurality of parts in the horizontal direction.

Thus, by providing the shutter means 13, as shown in FIG. 1, an upper gap formed between the accommodation α stacked in the accommodation space and the ceiling of the accommodation space is provided as a shutter means. Therefore, it is possible to avoid the problem that cold air passes through the upper gap.
In addition, as illustrated in FIG. 3C, when the lateral width of the storage object α stacked in the storage space is narrower than the lateral width of the storage space, the storage object α stacked in the storage space, and the side wall of the storage space Can be closed by the shutter means 13 divided by the vertical slits 13a, so that the problem of cold air passing through the horizontal gap can be avoided.

In the first embodiment, the suction port 8 is provided on the back side (front side) of the accommodation space.
The cold air that has passed to the front of the storage object α is sucked into the upper suction port 8 through a front gap between the front surface of the storage space and the front surface of the storage object α stacked in the storage space.
For this reason, when the stored object α is pressed against the front surface of the storage space, the front gap is closed.

  Therefore, in the first embodiment, a stopper 14 for securing a front gap is provided in the accommodation space. An example of the stopper 14 is a member (such as a bar or a mesh) that extends in the left-right direction, and the forward end of the stored object α is prevented by the front end of the stored object α coming into contact with the stopper 14.

As shown in FIG. 1, it is preferable to provide a wind direction control means 15 that sets the vertical blow angle of the cold air blown from the blower outlet 7 in the vicinity of the blower outlet 7.
The air direction control means 15 is attached to the inner surface of the door 3, for example, and may be fixed so that the angle cannot be changed. The angle of the cold air blown out from the air outlet 7 is arbitrarily set. It may be adjustable.

Moreover, it is preferable to provide the wind direction control louver 16 which sets the blowing angle of the cold wind blown in the left-right direction in the vicinity of the blower outlet 7.
This wind direction control louver 16 is provided in the wind direction control means 15 (not limited), may be fixed and cannot be changed in angle, or the left and right spreads of the cold wind blown from the blowout port 7. The angle may be arbitrarily adjustable.

  As described above, the temperature control storage device according to the first embodiment includes the housing 1 having a storage space capable of storing the storage object α, and the refrigerator 2 that generates cold air (an example of air-conditioning air) blown into the storage space. The storage object α stored in the storage space by the operation of the refrigerator 2 is refrigerated (an example of temperature control) to a desired temperature.

  In addition, as described above, the temperature control storage device blows the cool air (an example of the conditioned air) created by the refrigerator 2 into the accommodation space and the air (cold air) in the accommodation space to the refrigerator 2. And a suction port 8 to be returned.

Furthermore, in the temperature control storage device,
A normal rotation operation for returning the air in the accommodation space from the suction port 8 to the refrigerator 2 while blowing the air-conditioned air created by the refrigerator 2 from the outlet 7;
A reversing operation for returning the air in the housing space from the air outlet 7 to the refrigerator 2 while blowing the conditioned air created by the refrigerator 2 from the air inlet 8;
A forward / reverse switching means (a control program or a control sequence provided in the control device) is provided to perform the operation by alternately switching between.

The blower that is provided in the refrigerator 2 and blows conditioned air into the accommodation space is the above-described evaporator fan 5, and the evaporator fan 5 employs an axial flow type electric fan.
Specifically, the evaporator fan 5 is provided with a propeller fan on a shaft that is rotationally driven by an electric motor (for example, a three-phase AC motor). In the first embodiment, the controller changes the rotation direction of the electric motor. Switching between the forward rotation operation and the reverse rotation operation is performed by switching to the normal rotation direction or the reverse rotation direction.

The temperature control storage device of Example 1 is
An air outlet side temperature sensor 17a for detecting the temperature of the conditioned air blown from the air outlet 7 during forward rotation;
An air outlet side load temperature sensor 17b that directly or indirectly detects the temperature of the stored material α disposed at a site where the conditioned air blown out from the air outlet 7 is first touched during forward rotation;
A suction port side temperature sensor 18a for detecting the temperature of the conditioned air blown from the suction port 8 during the reverse rotation operation;
A suction port-side load temperature sensor 18b that directly or indirectly detects the temperature of the accommodation α disposed at a site where the conditioned air blown out from the suction port 8 first touches during reverse operation;
A control device that performs switching between forward rotation operation and reverse rotation operation based on the detected temperatures of the outlet side temperature sensor 17a, the outlet side cargo temperature sensor 17b, the inlet side temperature sensor 18a, and the inlet side cargo temperature sensor 18b; ,
Is used.

The specific example of the blower outlet side temperature sensor 17a is attached to the lower part of the cold wind production duct 4, and detects the temperature of the air path from the cold wind production duct 4 to the cold wind guide passage 10.
A specific example of the inlet side temperature sensor 18 a is attached to the upper part of the cold air production duct 4 and detects the temperature of the air path from the accommodation space to the cold air production duct 4.

The specific example of the outlet side load temperature sensor 17b may detect the outer surface temperature (the surface temperature of the placon etc.) of the accommodation α closest to the outlet 7, or the accommodation closest to the outlet 7. It may be inserted inside α (inside the placon) to detect the internal temperature of the stored object α (for example, the core temperature of agricultural products).
Similarly, the specific example of the suction port side load temperature sensor 18b may be one that detects the outer surface temperature of the accommodation α that is closest to the suction port 8, or inside the accommodation α that is closest to the suction port 8. It may be inserted to detect the internal temperature of the accommodation α.

The control device performs energization control of each electric functional component mounted on the refrigerator 2 and is provided such that operation control can be performed by a microcomputer or operation control can be performed by a sequence circuit, for example.
In addition to the temperature sensor described above, the control device controls energization of each electrical functional component mounted on the refrigerator 2 based on a signal given from an operation switch manually set by the user, a temperature setting means, or the like.

  As shown in the time chart in the lower part of FIG. 4A, the control device can change the rotational speed of the refrigerant compressor (comp rotational speed in the figure) by inverter-controlling the energization amount of the electric motor in the electric compressor. To control the operation capacity of the refrigerator 2.

The temperature control storage device of the first embodiment is provided so as to be capable of pre-cooling that quickly cools the contents α accommodated in the accommodation space by the operation of the refrigerator 2 within a predetermined temperature range.
And the temperature control storage apparatus of this Example 1 is provided so that the forward rotation operation and the reverse rotation operation may be alternately repeated by the above-described forward / reverse switching means at least when pre-cooling is performed.

As a specific example, the control device, when performing pre-cooling,
A normal operation in which the refrigerator 2 is operated at the maximum capacity (maximum number of rotations of the refrigerant compressor) while performing the forward rotation operation until the temperature detected by the outlet side temperature sensor 17a decreases to the target temperature (for example, 0 ° C.). Max-Cool driving,
A reverse max-cool operation in which the refrigerator 2 is operated at the maximum capacity while performing the reverse operation until the detected temperature of the inlet side temperature sensor 18a decreases to a target temperature (for example, 0 ° C.);
It is provided to execute a cool-down mode that switches between the two.

The execution period of the cool-down mode is determined by the core temperature of the produce monitored by the outlet side cargo temperature sensor 17b and the inlet side cargo temperature sensor 18b, and the outlet side cargo temperature sensor 17b and the inlet side cargo The cool-down mode is executed until the core temperature of the agricultural product monitored by the temperature sensor 18b decreases to a target temperature (for example, 5 ° C. or the like).
Then, when the cool-down mode is completed, the operation shifts to a refrigeration operation (capacity restriction mode) in which the refrigerator 2 is saved.
Unlike the first embodiment, the execution period of the cool-down mode may be determined based on a set time by a timer or the like (a fixed time may be variably set manually).

A specific operation example of the cool-down mode will be described.
(I) When the operation switch is turned on, first, the above-described normal rotation max cool operation is performed. That is, until the temperature detected by the air outlet side temperature sensor 17a {see the solid line A1 in FIG. 4 (a)} reaches 0 ° C., the forward rotation operation is performed while the refrigerator 2 is operated at the maximum capacity.

(Ii) When the detected temperature of the air outlet side temperature sensor 17a {see the solid line A1 in FIG. 4 (a)} reaches 0 ° C. during the forward rotation max cool operation, the reverse max cool operation described above is switched. That is, the reverse operation is performed while operating the refrigerator 2 at the maximum capacity until the temperature detected by the suction side temperature sensor 18a (see the broken line A2 in FIG. 4A) reaches 0 ° C.

(Iii) When the detected temperature of the suction port side temperature sensor 18a (see the solid line A2 in FIG. 4A) reaches 0 ° C. during the reverse max cool operation, the normal max cool operation is switched again.
Thereafter, the above (ii) and (iii) are alternately repeated until the “condition for canceling the cool-down mode” is satisfied.

(Iv) During the execution of the cool down mode, when the core temperature of the produce monitored by the outlet side load temperature sensor 17b and the inlet side load temperature sensor 18b falls to the target temperature (for example, 5 ° C.), the cool down mode is set. It ends, and shifts to the capacity restriction mode in which the operation capacity of the refrigerator 2 is suppressed.

(Effect of Example 1)
The temperature control storage device of Example 1 is
A normal rotation operation for sucking in air in the housing space from the suction port 8 while blowing cold air from the air outlet 7 into the housing space;
A reversing operation for sucking air in the housing space from the air outlet 7 while blowing cold air from the air inlet 8 into the housing space;
Switch alternately to drive.

This
-Forward rotation operation to cool the contents α from the side close to the outlet 7;
・ Reverse operation to cool the contents α from the side close to the suction port 8;
Are performed alternately.
For this reason, it is possible to cool the wide range of objects α stored in the storage space to a desired temperature in a short time without unevenness. That is, the temperature control storage device of the first embodiment employs a relatively inexpensive forced ventilation method, but can cool all the contents α to the target temperature in a short time without unevenness.

(Effect of Example 2)
As a more specific effect, the temperature control storage device according to the first embodiment executes the cool-down mode in which the forward max cool operation and the reverse max cool operation are alternately switched as described above when performing the pre-cooling. That is, pre-cooling is performed by alternately repeating the forward rotation operation and the reverse rotation operation while operating the refrigerator 2 at the maximum capacity.
Thereby, it is possible to lengthen the period B during which the refrigerator 2 is operated at the maximum capacity without cooling the core temperature of the agricultural product to 0 ° C. or less as compared with the conventional technique.
For this reason, compared with the prior art {refer FIG.4 (b)}, as shown to the continuous line C of Fig.4 (a), the period which cools the core temperature of agricultural products to a desired temperature range can be shortened.

(Effect 3 of Example 1)
As described above, the temperature control storage device according to the first embodiment includes the air outlet 7 and the suction port 8 at positions opposite to each other in the accommodation space and at diagonal positions in the accommodation space.
With this structure, it is possible to cool a wide range of items α in the accommodation space without unevenness, and shorten the precooling time.

[Example 2]
Example 2 will be described with reference to FIG. In addition, in the following Example 2, the same code | symbol as the said Example 1 shows the same function thing.
(Feature Technology 1 of Example 2)
As shown in FIG. 5, the temperature control storage device of the second embodiment is provided with two sets of two air outlets 7 and two air inlets 8 at each of the four corners facing each other in the housing 1.

Among the two sets, one set of the air outlet 7 and the suction port 8 is a first set, and the other set is a second set. The first set of outlets 7 is the rear side of the casing 1, the first set of outlets 8 is the front side of the casing 1, the second set of outlets 7 is the front side of the casing 1, and the second set of outlets. The outlet 8 is on the rear side of the housing 1.
By providing in this way, the passage direction X of the conditioned air connecting the first set of outlets 7 and the suction port 8 and the passage direction Y of the conditioned air connecting the second set of outlets 7 and the suction port 8 are: As shown in FIG. 5, it intersects inside the accommodation space.

Specifically, the temperature control storage device of Example 2 is at least during pre-cooling,
As shown in FIG. 5A, the first forward rotation operation of sucking the air in the accommodation space from the first set of suction ports 8 while blowing cool air from the first set of blowout ports 7 into the accommodation space. Mode,
-As shown in FIG.5 (b), the 1st reverse rotation operation mode which attracts | sucks the air in accommodation space from the 1st set blower outlet 7 while blowing cold air in the accommodation space from the 1st set suction port 8 When,
-As shown in FIG.5 (c), the 2nd forward rotation operation | movement which attracts | sucks the air in accommodation space from the 2nd set inlet 8 while blowing cool air in the accommodation space from the 2nd set blower outlet 7 Mode,
-As shown in FIG.5 (d), the 2nd reverse rotation operation mode which attracts | sucks the air in accommodation space from the 2nd set blower outlet 7 while blowing cold air in the accommodation space from the 2nd set suction port 8 When,
The switching operation is performed.

(Feature Technology 2 of Example 2)
The temperature control storage device according to the second embodiment includes a plurality of air outlets 7, a plurality of air inlets 8, a plurality of air outlet doors 21 that open and close the air outlets 7, and a plurality of air outlets that open and close the air inlets 8. The inlet door 22 is provided.
Specifically, in the temperature control storage device, the two air outlets 21, the two air inlets 8, and the two air outlets 7 that open and close the air outlets 7 independently are opened and closed independently. Two inlet doors 22 are provided.

In the second embodiment, the air outlet doors 21 and the air inlet doors 22 are alternately or sequentially switched to switch between the forward rotation operation and the reverse rotation operation.
Specifically,
In the first forward rotation operation mode, as shown in FIG. 5 (a), the first set of outlets 7 and the inlet 8 are opened, the second set of outlets 7 and 8 are closed, and the evaporator fan 5 is rotated forward,
In the first reverse operation mode, as shown in FIG. 5B, the first set of outlets 7 and the suction ports 8 are opened, the second set of outlets 7 and the inlets 8 are closed, and the evaporator fan 5 Reverse
In the second forward rotation operation mode, as shown in FIG. 5 (c), the second set of outlets 7 and the inlet 8 are opened, the first set of outlets 7 and 8 are closed, and the evaporator fan 5 is rotated forward,
In the second reverse operation mode, as shown in FIG. 5D, the second set of outlets 7 and the inlet 8 are opened, the first set of outlets 7 and 8 are closed, and the evaporator fan 5 Reverse.

  By adopting the second embodiment, it is possible to further reduce the cooling unevenness of the wide range of the stored items α in the storage space, and it is possible to further shorten the precooling time.

  In the above embodiment, an example in which switching control between forward rotation operation and reverse rotation operation is performed when pre-cooling is performed, but switching control between forward rotation operation and reverse rotation operation is performed in another operation state different from pre-cooling. May be.

  In the above embodiment, an example in which switching control between the forward rotation operation and the reverse rotation operation is performed based on the detected temperatures of the outlet side temperature sensor 17a and the inlet side temperature sensor 18a has been described. The suction port side temperature sensor 18a may be abolished, and switching control between the forward rotation operation and the reverse rotation operation may be performed based on the detected temperatures of the outlet side load temperature sensor 17b and the suction port side load temperature sensor 18b.

In said Example, although the example which provides the blower outlet 7 and the suction inlet 8 in the diagonal position of accommodation space was shown, it does not limit, Even if it provides the blower outlet 7 and suction inlet 8 in the facing of accommodation space, good.
Moreover, you may provide at least one of the blower outlet 7 or the suction inlet 8 so that temperature irregularity may be suppressed further. As a specific example, a large number of air outlets 7 and air inlets 8 are provided in a portion (for example, an intermediate part in the front-rear direction or an intermediate part in the up-down direction) different from the corners of the accommodation space. Alternatively, the suction port 8 may be opened or closed sequentially or randomly by an open / close door so as to suppress the temperature unevenness of the contents α.

In the above-described embodiment, an example in which the present invention is applied to a “container-type temperature control storage device” has been described, but the present invention is not limited thereto. As a specific example, equipment such as a crane is required to move the “container-type temperature control storage device”. Therefore, wheels (tires or the like) may be provided in the housing 1 of this embodiment so that they can be easily moved by towing or the like. Alternatively, the housing 1 may be mounted on a traction carry with wheels and provided so as to be easily movable. Thereby, the utilization range of the temperature control storage device to which the present invention is applied can be expanded, and the utilization rate of the temperature control storage device can be increased.
Or you may apply this invention to the container fixedly mounted in a vehicle, and may raise the temperature control capability of the container fixed to the vehicle.

  In the above embodiment, the example in which the present invention is applied to the transportable casing 1 has been described. However, the present invention may be applied to a stationary (non-transportable) casing. Specifically, the present invention may be applied to a stationary storage.

  In the above embodiment, the example of refrigeration was shown as an example of adjusting the temperature of the stored material α stored in the storage space to a desired temperature, but the present invention is not limited to refrigeration, and the stored product α is frozen. The refrigerator 2 may perform the heat pump operation and store the stored contents α.

  In the above embodiment, the agricultural product is shown as an example of the stored item α, but the stored item α is not limited to the agricultural product, and can be variously changed.

α Containment 1 Housing 2 Refrigerator 7 Air outlet 8 Air inlet

Claims (5)

A housing (1) having a storage space capable of storing the storage (α), and a refrigerator (2) for creating conditioned air blown into the storage space,
In the temperature control storage device for adjusting the temperature of the stored item (α) stored in the storage space to a desired temperature by the operation of the refrigerator (2),
This temperature control storage device includes an air outlet (7) that blows out the conditioned air created by the refrigerator (2) into the housing space, and an air inlet (2) that returns the air in the housing space to the refrigerator (2). 8)
Furthermore, the temperature control storage device
Forward rotation operation for returning the air in the accommodation space from the suction port (8) to the refrigerator (2) while blowing out the conditioned air created by the refrigerator (2) from the outlet (7);
Reversing operation for returning the air in the accommodation space from the outlet (7) to the refrigerator (2) while blowing out the conditioned air created by the refrigerator (2) from the inlet (8);
Comprising a forward-reverse switching means for switching the alternating,
In addition, this temperature control storage device
The temperature of the conditioned air blown from the air outlet (7) during the forward rotation operation, or the container (1) disposed at the site where the conditioned air blown from the air outlet (7) during the forward rotation operation is first touched a temperature sensor (17a, 17b) for detecting the temperature of α) directly or indirectly;
The temperature of the conditioned air blown out from the suction port (8) during the reverse rotation operation, or the accommodation (α) arranged at the site where the conditioned air blown out from the suction port (8) during the reverse rotation operation first touches The inlet side temperature sensor (18a, 18b) for directly or indirectly detecting the temperature of
A control device that performs switching between the forward rotation operation and the reverse rotation operation based on the detected temperatures of the outlet side temperature sensors (17a, 17b) and the suction port side temperature sensors (18a, 18b);
Comprising
The control device, when performing pre-cooling to cool the stored item (α) stored in the storage space within a predetermined temperature range,
Normal rotation max-cool operation in which the refrigerator (2) is operated at maximum capacity while performing the normal rotation operation until the detected temperature of the outlet side temperature sensor (17a, 17b) is lowered to a target temperature;
A reverse max-cool operation in which the refrigerator (2) is operated at a maximum capacity while performing the reverse operation until the temperature detected by the inlet side temperature sensor (18a, 18b) decreases to a target temperature;
A temperature-controlled storage device characterized in that a cool-down mode for alternately switching between them is provided . In the temperature-controlled storage device according to claim 1,
The temperature control storage device, wherein the air outlet (7) and the suction port (8) are provided at positions facing each other with the accommodation space interposed therebetween. The temperature control storage device according to claim 2,
The air outlet (7) and the air inlet (8) are provided in two sets, one at each of the two diagonal positions at the four corners in the housing (1) forming the housing space,
When these two sets are a first set and a second set, the passing direction (X) of the conditioned air connecting the outlet (7) and the suction port (8) of the first set, and the second set The temperature-controlled storage device characterized in that the air-conditioned air passage direction (Y) connecting the air outlet (7) and the air inlet (8) intersects inside the accommodation space . In the temperature control storage apparatus as described in any one of Claims 1-3,
The blower that is provided in the refrigerator (2) and blows conditioned air into the housing space is an axial flow evaporator fan (5) that combines an electric motor and a propeller fan.
The temperature control storage device , wherein the forward rotation operation and the reverse rotation operation are switched by switching the rotation direction of the evaporator fan (5) . In the temperature control storage apparatus of Claim 3 ,
This temperature control storage device
Two air outlet doors (21) for opening and closing the air outlets (7) of the first group and the second group, and the air inlet (8) of each of the first group and the second group are opened and closed. Two inlet doors (22),
By opening and closing the two outlet doors (21) and the two inlet doors (22),
A first forward rotation operation mode in which air in the housing space is sucked from the suction port (8) of the first set while cold air is blown out from the first set of the blowing ports (7) into the housing space. ,
A first reverse operation mode in which air in the housing space is sucked from the air outlet (7) of the first set, while blowing cool air from the suction port (8) of the first set into the housing space;
A second forward rotation operation mode for sucking air in the housing space from the suction port (8) of the second set while blowing cool air into the housing space from the second set of blowout ports (7). ,
And a second reverse operation mode for sucking air in the housing space from the second set of outlets (7) while blowing cool air from the second set of suction ports (8) into the containing space. The temperature control storage device characterized by performing the switching operation .

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