JP2016027294A - Refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a refrigerator capable of inhibiting dew condensation from occurring on a floor surface of a storage.SOLUTION: A freezing car includes: a refrigerator provided at a vehicle body; a cooling unit which cools an interior part of the refrigerator; and a traverse flow blower 40 which is disposed along an upper end part of an opening part of the refrigerator on an inner surface of the refrigerator and forms an air curtain. The traverse flow blower 40 includes: a fan which may rotate around a rotation axis A extending along the upper end part of the opening part of the refrigerator; an outer air suction port 41e through which outer air is suctioned by the fan; and a wind guide passage 41h which guides the outer air from the fan so that the air is blown down in a direction toward the outer side relative to a lower end part of the opening part of the refrigerator.SELECTED DRAWING: Figure 10

Description

  The present invention relates to a freezer, and more particularly to a freezer equipped with a cross-flow blower that forms an air curtain.

  2. Description of the Related Art Conventionally, a refrigeration vehicle including a cross-flow fan that forms an air curtain is known (see, for example, Patent Document 1).

  Patent Document 1 includes a freezer compartment (storage), a cooler that cools the freezer compartment, and a cross-flow fan disposed on the upper surface of the freezer compartment and in the vicinity of the opening of the freezer compartment. A refrigerated vehicle is disclosed. The cross-flow fan of the refrigeration vehicle described in Patent Document 1 is configured to suck the cold air inside the freezer compartment and blow down the cold air from a slightly inward discharge port toward the inside of the freezer compartment. .

Japanese Utility Model Publication No. 5-68741

  However, in the refrigeration vehicle described in Patent Document 1, since the cold air is blown down from the slightly inward discharge port toward the inside of the freezer compartment, the outside of the freezer compartment where the cold air is blown down ( High temperature outside air enters the area on the freezer compartment opening side). For this reason, on the floor surface of the freezer compartment in the area outside the place where the cold air is blown down, the outside air is in contact with the cooled floor surface, so that moisture contained in the outside air is condensed and condensation occurs. There is a problem. In this case, the exterior material (packaging material) such as a cardboard box that packs the product due to condensation on the floor surface contains moisture, and as a result, not only the exterior material but also the internal product is damaged (wet). It may reach.

  This invention is made | formed in order to solve the above subjects, and one objective of this invention is to provide the freezer which can suppress that dew condensation arises on the floor surface of a storage. It is.

  The freezer according to the first aspect of the present invention is disposed along the upper end of the opening of the storage on the upper surface of the storage, the cooling unit for cooling the inside of the storage, and the interior of the storage. A cross flow blower, the cross flow blower comprising: a fan rotatable around a rotation axis extending along an upper end of the opening of the storage; a suction port from which the outside air is sucked by the fan; and a fan And an air guide path for guiding the outside air to blow down outside the lower end of the opening of the storage. Note that “freezing” in the present invention is not only when the interior of the storage is cooled (freeze) to 0 ° C. or lower, but also when the interior of the storage is cooled (refrigerated) to a temperature range slightly higher than 0 ° C. Is a broad concept.

  In the freezer according to the first aspect of the present invention, as described above, the cross-flow blower forming the air curtain has the outside air suction port from which the outside air is sucked by the fan, and the lower end of the opening of the storage case. And an air guide path that guides the air so as to blow down to the outside. As a result, the air curtain can be formed by blowing down the sucked outside air outside the lower end of the opening of the storage so that the sucked outside air does not hit the floor of the storage. Thus, it is possible to suppress the outside air from entering the inside of the storage, and it is possible to suppress the outside air from coming into contact with the cold floor surface of the storage. Thereby, since it can suppress that external air contacts the cold floor surface of a storage, it can suppress that dew condensation generate | occur | produces on the floor surface of a storage. Further, by forming the air curtain using the outside air, unlike the case where the cold air inside the storage is used, it is possible to prevent the cold air from being discharged outside the storage. Furthermore, by arranging the cross-flow fan on the upper surface inside the storage, it is possible to arrange the cross-flow fan at a position sufficiently away from the road surface as compared with the case where the cross-flow fan is attached to the lower part of the storage. Therefore, it can suppress that foreign materials, such as dust from a road surface, enter the inside of a cross flow fan. Thereby, since the structure which removes a foreign material becomes unnecessary, the structure of a cross flow fan can be simplified. Moreover, it can also suppress that the pressure loss of a crossflow fan becomes large resulting from a foreign material entering the inside of a crossflow fan.

  In the freezer according to the first aspect, preferably, the air guide path has an inclined portion inclined in a direction from the opening of the storage toward the outside. If comprised in this way, the outside air from a fan can be easily blown down outside the lower end part of the opening part of a storage by the inclination part. Moreover, since it is not necessary to provide the baffle plate which inclines to the back side as another member, it can suppress that a number of parts increases.

  In the freezer according to the first aspect, preferably, the air guide path is disposed at a position corresponding to the vicinity of the outer end of the fan in the axial direction in which the rotation axis extends, and is inclined in the direction toward the outer side in the axial direction. The wind guide part which guides outside air to the outer side rather than the outer end part of the. If comprised in this way, since an external air can be guide | induced to the outer side rather than the outer end part of the fan by which an external air is not blown directly from a fan by a wind guide part, an air curtain is provided outside an outer end part of a fan. Can be prevented from being formed (part where the amount of outside air blown down is small). Thereby, since it can suppress that outside air penetrate | invades into the inside of a storage from the tear of an air curtain, it can control effectively that the temperature inside the storage rises due to the invading outside air. Can do.

  In this case, preferably, the wind guide portion is disposed so as to be inclined in the direction toward the outside in the axial direction at an angle of 45 degrees or more and less than 90 degrees with respect to the rotation axis. If comprised in this way, compared with the case where a wind guide part inclines at an angle of less than 45 degree | times with respect to a rotating shaft line, since the length of the axial direction of a wind guide part can be made small, a wind guide It is possible to suppress an excessive increase in the facing area of the portion with respect to the rotation axis (fan) and to suppress an excessive increase in the amount of outside air hitting the wind guide portion. Thereby, the area corresponding to the position where the wind guide portion is formed due to excessive increase in the amount of the outside air hitting the wind guide portion while guiding the outside air outside the outer end portion of the fan by the wind guide portion. It can suppress that the quantity of the external air which flows through is reduced excessively. Therefore, it is possible to reliably prevent the air curtain from being broken not only at the outer side of the outer end of the fan but also at the position corresponding to the wind guide part. An air curtain can be reliably formed in the range.

  In the freezer according to the first aspect, preferably, the fan of the cross flow fan is formed by connecting a plurality of fan members along an axial direction in which the rotation axis extends. If comprised in this way, since the size of a fan can be adjusted by changing the number of fan members according to the length by which a cross flow blower is arranged, a dedicated crossing is provided for each storage unit having a different size. There is no need to provide a flow blower. Thereby, a cross-flow fan can be easily applied to a different kind of freezer truck.

  In the freezer according to the first aspect described above, preferably, the storage includes an opening / closing door that opens and closes the opening of the storage, and the airflow guide path of the cross-flow fan has a wind direction adjustment unit capable of adjusting the direction of the airflow. When the open / close door is opened, the outside air from the fan is blown outside the lower end of the opening of the storage by the airflow direction adjustment unit and cooled by the cooling unit while the open / close door is closed. The air that has been blown is blown down by the airflow direction adjustment unit in the vicinity of the lower end of the opening of the storage or inside the lower end. According to this structure, when the open / close door is closed, the cold air blown out from the cooling unit can be uniformly distributed in the storage using the cross-flow blower. And temperature control accuracy can be improved.

  In the configuration in which the air guide path includes a wind direction adjusting unit, preferably, the cross flow blower further includes an internal air suction port for sucking air cooled by the cooling unit by the fan in addition to the outside air suction port, When the outside air suction port is closed and the internal air suction port is opened, the air cooled by the cooling unit in the state where the open / close door is closed is near or at the lower end of the opening of the storage by the airflow direction adjustment unit. It is configured to circulate in the storage by being blown down to the inner side than the part. With this configuration, even when the open / close door is closed, the cold air blown from the cooling unit can be sucked and sucked through the internal air suction port provided in the cross flow fan. The cool air can be reliably blown out into the storage through the air guide passage. Therefore, the temperature unevenness in the storage can be reliably suppressed.

  In the configuration in which the air guide path includes a wind direction adjustment unit, preferably, the air guide path further includes an open / close state detection unit that detects an open / close state of the open / close door, and the open / close state detection unit closes the open / close door from the opened state. When the state is detected, the direction of the airflow is adjusted by the airflow direction adjustment unit of the crossflow fan so that the air cooled by the cooling unit circulates in the storage. If comprised in this way, after the opening-and-closing door is closed, it is made for the air current which blows off from a cross flow blower to circulate through the inside of a storage in synchronism with the inside of a storage being cooled by a cooling unit. Therefore, the inside of the storage can be quickly cooled while suppressing temperature unevenness in the storage.

  In the configuration in which the air guide path has a wind direction adjusting unit, preferably, with the open / close door opened, based on at least one of the temperature and the humidity outside the storage unit, the cross flow blower to the opening of the storage unit The direction of the airflow blown down outside the lower end portion is adjusted by the airflow direction adjusting unit. If comprised in this way, according to external air conditions (at least one of the temperature outside the storage, or humidity), it will suppress more that dew condensation generate | occur | produces on the floor surface of a storage, or external air will be stored by an air curtain. The user can appropriately select whether to suppress the intrusion into the interior of the device.

  According to the present invention, it is possible to suppress the occurrence of condensation on the floor surface of the storage as described above.

It is the figure which showed the schematic whole structure of the freezing vehicle by 1st Embodiment of this invention. In the freezing vehicle by 1st Embodiment of this invention, it is the perspective view which showed the state by which the opening-and-closing door (left door) of the freezer was opened. It is a control block diagram of the freezing vehicle by 1st Embodiment of this invention. It is the figure which showed the state by which the cross flow air blower was act | operated in the freezer truck by 1st Embodiment of this invention. It is the top view which showed the crossflow fan of the freezing vehicle by 1st Embodiment of this invention from the back side. It is the perspective view which showed the state which removed the cover member of the crossflow fan of the freezing vehicle by 1st Embodiment of this invention. It is the top view which showed the rotating shaft and motor of the crossflow fan of the freezing vehicle by 1st Embodiment of this invention. It is the top view which showed the rotating shaft, the motor, and the fan of the crossflow fan of the freezing vehicle by 1st Embodiment of this invention. It is the perspective view which showed the fan member of the crossflow fan of the freezing vehicle by 1st Embodiment of this invention. It is sectional drawing which showed the crossflow fan of the freezing vehicle by 1st Embodiment of this invention from the direction orthogonal to an axial direction. It is sectional drawing which showed from the axial direction the cross-flow fan of the freezing vehicle by 1st Embodiment of this invention. It is sectional drawing which showed a pair of crossflow fan of the freezing vehicle by 1st Embodiment of this invention from the axial direction. It is sectional drawing which showed from the axial direction the crossflow fan of the refrigerated warehouse by 2nd Embodiment of this invention. It is the figure which showed the structure (opening-closing door: closed state) of the refrigerator warehouse by 2nd Embodiment of this invention. It is the figure which showed the structure (opening-closing door: open state) of the refrigerator warehouse by 2nd Embodiment of this invention. It is the figure explaining the wind direction adjustment method of the crossflow fan by 2nd Embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[First Embodiment]
First, with reference to FIGS. 1-4, the structure of the freezing vehicle 100 by 1st Embodiment of this invention is demonstrated.

  As shown in FIG. 1, the refrigerator 100 according to the first embodiment is installed in a vehicle main body 10, a freezer (freezer refrigerator compartment) 20, a cooling unit 30 that cools the inside of the freezer 20, and the inside of the freezer 20. And a pair of cross-flow blowers 40. The vehicle body 10 is an example of the “vehicle” in the present invention, and the freezer 20 is an example of the “storage” in the present invention.

  The vehicle body 10 includes a chassis 11 that extends in the front-rear direction (X direction). A traveling engine 12 (shown by a broken line) is fixed to the front side (X1 side) of the chassis 11 and covers the engine 12. A cab 13 is provided as described above. In addition, a battery 14 is placed on the side of the chassis 11 in the vehicle body 10. Here, the electric power of the battery 14 is supplied to the cross flow fan 40 when the cross flow fan 40 is operated. Further, the engine 12 is provided with an alternator 12 a that generates electric power using the driving force of the engine 12. The electric power from the alternator 12a is supplied to the battery 14 during running to be charged.

  Further, as shown in FIG. 1, the freezer 20 is installed on the chassis 11 at the rear (X2 side) of the cab 13. The vehicle body 10 is also provided with a control box 50 that controls the operation of the cross flow fan 40. The control box 50 is configured separately from a vehicle body side control unit (ECU) 12b that controls the engine 12 on the vehicle body 10 side.

  As shown in FIGS. 1 and 2, the freezer 20 has a side wall portion 21 that is substantially perpendicular to the road surface 1, a floor portion 22 and a ceiling portion 23 that are substantially parallel to the road surface 1, and outward toward the rear side. And an openable / closable door 24. The side wall part 21, the floor part 22, the ceiling part 23, and the opening / closing door 24 use members having a heat insulating function, and each member is assembled to a metal frame part (frame) 20a (see FIG. 2). As a result, a hollow box type freezer 20 is formed. The freezer 20 has an opening 20b that connects the inside and the outside of the freezer 20 to the rear side (X2 side) by a pair of side walls 21, a floor 22, and a ceiling 23 in the vehicle width direction (Y direction). It is configured. An openable / closable door 24 is provided at the opening 20b.

  Moreover, as shown in FIG. 1, the floor part 22 has the flat floor surface 22a, and the goods 2 are loaded on the floor surface 22a. Here, the product 2 is packed with an exterior material 2a made of corrugated paper or the like. In FIGS. 1 and 3, the overall outer shape of the product 2 packed in the exterior material 2 a is shown using a two-dot chain line, but in actuality, the product 2 in the form of individual cardboard boxes. Are stacked upward from the floor surface 22a. Moreover, in FIG. 2, illustration of the product 2 is omitted for convenience.

  As shown in FIG. 2, when the refrigerator truck 100 is viewed from the rear side (X2 side), the open / close door 24 has a left door 24a and a right door 24b. The left door 24a is opened from the approximate center in the vehicle width direction (Y direction) of the freezer 20 to one side (Y1 side), and the right door 24b is opened to the other side (Y2 side). Here, when the cargo handling worker (driver) 3 opens the opening / closing door 24 (the left door 24a is opened in FIG. 2) in a state where the refrigerator 100 is stopped (parked), the opening 20b of the freezer 20 is opened. The loading operation and the unloading operation of the commodity 2 are performed through the.

  Moreover, as shown in FIG. 2, the opening / closing door switch 81 is each attached to the surface of the frame part 20a of the position corresponding to the lower end part (Z2 side) of each of the left door 24a and the right door 24b. The open / close door switch 81 has a function of detecting a door open state and a door closed state of the open / close door 24 (the left door 24a and the right door 24b) by the cargo handling worker 3.

  As shown in FIG. 2, the left door 24 a and the right door 24 b each have a lock mechanism portion 25. When opening the left door 24a on the Y1 side during cargo handling work, the cargo handling worker 3 turns the left door 24a outward by rotating the left door 24a with the lock mechanism 25 unlocked. To open. Further, when the left door 24a is closed, the lock of the lock mechanism portion 25 is validated in a state in which the left door 24a is pivoted in the opposite direction to the opened state and temporarily closed. Similarly, the cargo handling worker 3 is configured to be able to open and close the right door 24b.

  As shown in FIG. 1, the cooling unit 30 includes a compressor 31, a condenser 32, an evaporator 33, and a refrigerant pipe 34 that connects these functional components. The compressor 31 is driven by the power of the engine 12. Further, the condenser 32 and the evaporator 33 are housed in a housing 35, and the housing 35 is attached to the outer surface of the side wall 21 on the front part (X1 side) above the cab 13. . Further, a blowout hole 21 a and a suction hole 21 b made of through holes are formed in the portion of the side wall portion 21 that faces the evaporator 33. And while the air in the freezer 20 is suck | inhaled by the air blower 33a from the suction hole 21b to the evaporator 33 side, the air (cold air) cooled with the evaporator 33 is blown out in the freezer 20 from the blower hole 21a. In addition, air outside the vehicle is sucked from the front side (X1 side) by the blower 32a, and air that has cooled the condenser 32 is blown upward (Z1 direction).

  Here, the refrigerant gas discharged from the compressor 31 flows through the refrigerant pipe 34 and is condensed (liquefied) by the condenser 32, and the liquefied refrigerant is decompressed by a decompression device (expansion valve) (not shown) and at a low temperature. And is distributed to the evaporator 33. The evaporator 33 cools the inside of the freezer 20 to a desired temperature by cooling the air in the freezer 20 as the low-temperature refrigerant evaporates. In addition, the temperature in a store | warehouse | chamber is detected by the temperature sensor 82 (refer FIG. 3) arrange | positioned in the vicinity of the position (blowout hole 21a) where the cool air of the evaporator 33 is blown off.

  Next, with reference to FIGS. 1-12, the structure of the crossflow fan 40 by 1st Embodiment of this invention is demonstrated.

  As shown in FIGS. 2 and 4, the pair of cross-flow fans 40 (40 a and 40 b) uses air outside the freezer 20 (outside air) to form an air curtain so as to cover the opening 20 b. Is provided. The pair of cross-flow fans 40 are attached to the inner surface (the inner surface of the freezer 20) 23 a of the ceiling 23 near the open / close door 24 inside the freezer 20. The inner surface 23a is an example of the “upper surface” in the present invention.

  The cross flow blower 40a on the Y1 side extends from the side wall portion 21 on one side (Y1 side) in the freezer 20 to the approximate center in the Y direction along the upper end portion 20c extending in the vehicle width direction (Y direction) of the opening 20b. , Installed so as to extend in the Y direction. The Y1 side cross flow blower 40a is configured to form an air curtain in the Y1 side region of the opening 20b corresponding to the left door 24a.

  The cross flow blower 40b on the Y2 side is installed so as to extend in the Y direction from the approximate center in the Y direction to the side wall portion 21 on the other side (Y2 side) in the freezer 20 along the upper end portion 20c. The Y2 side cross flow fan 40b is configured to form an air curtain in the Y2 side region of the opening 20b corresponding to the right door 24b.

  Further, as shown in FIG. 12, the cross flow fan 40a and the cross flow fan 40b are arranged adjacent to each other in the Y direction with a slight gap therebetween.

  As shown in FIGS. 5 and 6, the pair of cross-flow fans 40 each include a box-shaped casing 41, a fan 42 installed inside the casing 41, and a rotating shaft 43 (see FIG. 5). 7) and a motor 44. As shown in FIG. 7, the rotation shaft 43 is formed to extend in the Y direction (axial direction) in which the rotation axis A extends. One end of the rotation shaft 43 on the Y1 side is attached to the motor 44, and the motor 44 is driven so as to rotate the rotation shaft 43 in the rotation direction B around the rotation axis A extending in the Y direction. It is configured. Further, as shown in FIG. 8, the fan 42 is fixed to the rotation shaft 43, and is configured to rotate in the rotation direction B as the rotation shaft 43 rotates in the rotation direction B.

  As shown in FIGS. 6 and 8, the fan 42 is formed by connecting a cylindrical fan member 45 extending in the Y direction in the axial direction (Y direction) in which the rotation shaft 43 extends. Specifically, on the Y1 side, the four fan members 45 are connected in a state adjacent to the Y direction, and on the Y2 side, the four fan members 45 are connected in a state adjacent to the Y direction. As a result, the size of the fan 42 in the axial direction can be changed by changing the number of fan members 45 constituting the fan 42. As a result, it is not necessary to prepare a mold for producing the fan 42 for each different type of freezer truck 100 (freezer 20), so that not only the process of creating the mold is reduced, but also the mold is formed. It is possible to reduce the cost required for this.

  As shown in FIG. 9, the cylindrical fan member 45 includes a plurality of wing portions 45 a extending in the Y direction and a pair of side surface portions 45 b formed at both ends of the fan member 45 in the Y direction. Yes. As shown in FIG. 10, the plurality of wing portions 45 a are arranged so as to be aligned along the outer peripheral surface of the cylinder, and the rotation direction from the rotation shaft 43 side (inner side) to the outer peripheral surface side (outer side). It is formed so as to bend to B. Thereby, the fan 42 constituted by the cylindrical fan member 45 sucks outside air from behind (X2 direction) in the radial direction of the fan member 45 orthogonal to the axial direction (Y direction) in the entire Y direction. To do. And the fan 42 is comprised so that the external air which passed the inside of the hollow fan member 45 may be blown down linearly below (Z2 direction) among radial directions. That is, the cross flow fan 40 is a so-called cross flow fan.

  As shown in FIG. 9, the pair of side surface portions 45 b are configured to rotatably support the rotation shaft 43 (see FIG. 10) at both ends in the Y direction of the cylindrical fan member 45. .

  As shown in FIG. 6, a shaft holding portion 46a that rotatably holds the rotating shaft 43 is provided between the four fan members 45 on the Y1 side and the four fan members 45 on the Y2 side. In addition, as shown in FIG. 11, on the Y2 side of the four fan members 45 on the Y2 side, a shaft holding portion 46b that rotatably holds the rotary shaft 43 is provided.

  As shown in FIG. 6, the casing 41 of the cross flow fan 40 is formed in a box shape extending in the Y direction. The casing 41 includes a first member 41a that constitutes an upper portion (Z1 side) and a front portion (X1 side) of the box, a second member 41b that constitutes a lower portion (Z2 side) of the box, and the Y direction of the box. The side part 41c which forms the side surface by the side of Y1 and the side part 41d which forms the side surface by the side of Y2 of the box are included. The first member 41 a and the second member 41 b form an outside air suction port 41 e that sucks outside air into the housing 41 at the rear part of the housing 41. As shown in FIG. 10, the second member 41 b accommodates the fan 42 and also accommodates the housing 41 f for guiding the outside air sucked from the outside air suction port 41 e to the fan 42 and the outside air blown down by the fan 42. It has an air guide passage 41h leading to the discharge port 41g.

  The outside air suction port 41e is formed on the rear surface (surface on the X2 side) of the casing 41 so that air outside the freezer 20 (outside air) is sucked by the fan 42 through the outside air suction port 41e. It is configured. A cover member 47 for protecting the inside of the housing 41 is attached to the rear side (X2 side) of the outside air suction port 41e so as to cover the outside air suction port 41e. The cover member 47 is provided with a plurality of through holes 47a for sucking outside air from the outside air suction port 41e.

  Here, in the first embodiment, as shown in FIG. 10, the air guide path 41h has an inclined portion 41i that is inclined downward (Z2 direction) from the opening 20b toward the rear side (X2 direction). Is formed. Thereby, the outside air blown down by the fan 42 is blown down from the discharge port 41g in a state where the direction is changed slightly toward the rear by the inclined portion 41i. Further, as shown in FIG. 4, the inclined portion 41 i (see FIG. 10) is outside the lower end portion 20 d of the opening 20 b of the freezer 20 so that the outside air blown down from the fan 42 does not substantially enter the freezer 20. It has a function of guiding the outside air so that the outside air is blown down toward (X2 side). Note that the inclination angle θ1 (see FIG. 10) of the inclined portion 41i is such that the outside air is blown down to a position separated by a distance L of about 100 mm toward the outside (X2 side) from the lower end portion 20d of the opening 20b of the freezer 20. The tilt angle is set to be as follows.

  Further, as shown in FIG. 11, four wind guide portions 48 for guiding the flow of outside air are arranged in the vicinity of the discharge port 41 g of the inclined portion 41 i of the housing 41. Each of the four wind guide portions 48 extends substantially parallel to the inclined portion 41i, is attached to the inclined portion 41i, and is substantially perpendicular to the attaching portion 48a (of the air guide path 41h). A wind guide portion 48b extending inwardly.

  A pair of wind guide portions 48 are arranged on the Y1 side of the inclined portion 41i corresponding to the vicinity of the outer end portion 42a on the Y1 side of the fan 42, and correspond to the vicinity of the outer end portion 42b on the Y2 side of the fan 42. A pair is arranged on the Y2 side of the inclined portion 41i.

  The pair of wind guide portions 48 on the Y1 side are respectively located in the Y direction between the Y1 motor 44 and the fan member 45 located closest to the Y1 side, and the fan member located closest to the Y1 side. It is arranged at a predetermined distance from the position in the Y direction corresponding to 45. Also, the pair of wind guide portions 48 on the Y2 side are respectively positioned in the Y direction corresponding to the second fan member 45 from the Y2 side, and in the Y direction corresponding to the fan member 45 located closest to the Y2 side. Are arranged at a predetermined distance from each other.

  In the first embodiment, as shown in FIG. 11, in the pair of wind guide portions 48 on the Y1 side, the wind guide portion 48b is on the outside (Y1 side) that is on the motor 44 side in the downward direction (Z2 direction). It is comprised so that it may incline to. At this time, the wind guide portion 48b is formed so as to be inclined at an inclination angle θ2 of about 60 degrees with respect to a straight line (rotation axis A) extending in the Y direction. Accordingly, the pair of wind guides 48 on the Y1 side is configured to guide the outside air to the outer side (Y1 side) of the outer end 42a on the Y1 side of the fan 42.

  Further, in the pair of wind guide portions 48 on the Y2 side, the wind guide portion 48b is configured to be inclined downward (Y2 side) which is the shaft holding portion 46b side. At this time, the wind guide portion 48b is formed to be inclined at an inclination angle θ3 of about 60 degrees with respect to the rotation axis A extending in the Y direction. Accordingly, the pair of wind guide portions 48 on the Y2 side is configured to guide the outside air to the outer side (Y2 side) of the outer end portion 42b on the Y2 side of the fan 42.

  Here, when the wind guide portion 48 is not provided in the cross flow blower 40, the outside air is directly blown down in the region R1 (see FIGS. 11 and 12) corresponding to the portion where the fan 42 is provided. The region R2 (see FIGS. 11 and 12) corresponding to the portion where the air curtain is formed and the fan 42 is not provided (for example, the region where the motor 44 is disposed or the gap between the cross flow fans 40). Then, since outside air is not blown down directly, area | region R2 will be a torn air curtain (part with little amount of outside air blown down). As a result, high temperature outside air enters the inside of the freezer 20 due to the air curtain breaking, and the temperature inside the freezer 20 rises.

  On the other hand, by providing the wind guide portion 48 as in the first embodiment, as shown in FIGS. 11 and 12, the outside air is directly blown also into the region R2 corresponding to the portion where the fan 42 is not provided. Since it can be lowered, the air curtain can be prevented from being broken. As a result, it is possible to prevent the outside air having a high temperature from entering the inside of the freezer 20 due to the air curtain being broken.

  As shown in FIG. 4, in the freezer car 100, when the open / close door 24 (the left door 24 a and / or the right door 24 b) of the freezer 20 is opened, the crossing corresponding to the open / close door 24 on the opened side. The operation of the air blower 40 (40a and 40b) is configured to be started. The refrigerator 100 is configured such that the operation of the cross flow fan 40 is stopped when the open / close door 24 (the left door 24a and the right door 24b) of the freezer 20 is closed.

  When the refrigerator 100 is running (when the engine 12 is on), the compressor 31 is driven together with the engine 12 as shown in FIG. Thereby, the cooling unit 30 is operated and the inside of the freezer 20 is cooled to a desired temperature. In addition, when the engine 12 is on, the cross flow blower 40 is not operated. On the contrary, as shown in FIGS. 2 and 4, the cross-flow fan 40 has an open / close door when the refrigeration vehicle 100 is stopped (parked) and the engine 12 is off (the cooling unit 30 is stopped). It is operated in conjunction with 24. The refrigeration vehicle 100 according to the first embodiment is configured as described above.

(Effect of 1st Embodiment)
In the first embodiment, the following effects can be obtained.

  In the first embodiment, as described above, the cross-flow blower 40 forming the air curtain has the outside air suction port 41e through which the outside air is sucked by the fan 42, and the lower end of the opening 20b of the freezer 20 through the outside air from the fan 42. An air guide path 41h that guides the air so as to blow down in a direction toward the outside of the portion 20d is provided. As a result, the air guide can be formed by blowing down the sucked outside air outside the lower end portion 20d of the opening 20b of the freezer 20 so as not to hit the floor surface 22a of the freezer 20 by the air guide path 41h. Therefore, it can suppress that outside air enters into the inside of the freezer 20 with an air curtain, and can suppress that outside air contacts the cold floor surface 22a of the freezer 20. Thereby, since it can suppress that external air contacts the cold floor surface 22a of the freezer 20, it can suppress that dew condensation generate | occur | produces on the floor surface 22a of the freezer 20.

  Moreover, in 1st Embodiment, unlike the case where the cool air inside the freezer 20 is used, it can prevent discharging cold air outside the freezer 20 by forming an air curtain using external air.

  Moreover, in 1st Embodiment, compared with the case where the crossflow fan 40 is arrange | positioned in the floor part 22 of the freezer 20 by arrange | positioning the crossflow fan 40 in the inner surface 23a of the ceiling part 23 of the freezer 20, it is. Can be disposed at a position sufficiently away from the road surface 1, so that foreign matters such as dust from the road surface 1 can be prevented from entering the cross flow fan 40. Thereby, since the structure which removes a foreign material becomes unnecessary, the structure of the cross flow fan 40 can be simplified. Moreover, it can also suppress that the pressure loss of the crossflow fan 40 becomes large resulting from a foreign material entering the inside of the crossflow fan 40.

  Further, in the first embodiment, by configuring the air guide passage 41h to have the inclined portion 41i inclined to the rear side (X2 direction) toward the outside from the opening 20b of the freezer 20, the inclined portion 41i The outside air from the fan 42 can be easily blown down outside the lower end 20d of the opening 20b of the freezer 20. Moreover, since it is not necessary to provide the baffle plate which inclines to the back side as another member, it can suppress that a number of parts increases.

  In the first embodiment, the outer side in the axial direction (Y1 side) is located at a position corresponding to the vicinity of the outer end portion 42a on the Y1 side of the fan 42 in the axial direction (Y direction) in which the rotation axis A of the air guide path 41h extends. A pair of wind guide portions 48 (wind guide portions 48 b) that are inclined in the direction toward the outside and guide the outside air to the outside of the outer end portion 42 a of the fan 42 are provided. Further, the fan 42 is inclined in a direction toward the outer side (Y2 side) in the axial direction at a position corresponding to the vicinity of the Y2 side outer end 42b of the fan 42 in the axial direction of the air guide path 41h than the outer end 42b of the fan 42. A pair of wind guide portions 48 (wind guide portions 48b) for guiding outside air to the outside are also provided. As a result, the outside air can be guided outside the outer ends 42 a and 42 b of the fan 42 where the outside air is not directly blown from the fan 42 by the wind guide portion 48, so the outer ends 42 a and 42 b of the fan 42. It is possible to prevent the air curtain from being torn outside (a portion where the amount of outside air blown down is small). Thereby, since it can suppress that outside air penetrate | invades into the inside of the freezer 20 from the tear of an air curtain, it suppresses effectively that the temperature inside the freezer 20 rises due to the outside air which penetrate | invades. Can do.

  Further, in the first embodiment, the wind guide portion 48b of the wind guide portion 48 on the Y1 side is disposed outside (Y1 side) in the axial direction (Y direction) at an inclination angle θ2 of about 60 degrees with respect to the rotation axis A. Arrange it so that it tilts in the direction you head. Further, the wind guide portion 48b of the wind guide portion 48 on the Y2 side is arranged so as to be inclined in the direction toward the outer side (Y2 side) in the axial direction at an inclination angle θ3 of about 60 degrees with respect to the rotation axis A. Thereby, compared with the case where the wind guide part 48b of the wind guide part 48 is inclined at an angle of less than 45 degrees with respect to the rotation axis A, the axial length of the wind guide part 48b of the wind guide part 48 is reduced. Since the air guide portion 48b can be made smaller, the area of the wind guide portion 48b facing the rotation axis A (fan 42) is prevented from becoming excessively large, and the amount of outside air hitting the wind guide portion 48b of the wind guide portion 48 is excessively increased. Can be suppressed. As a result, the air guide portion 48b of the wind guide portion 48 guides the outside air to the outside of the outer ends 42a and 42b of the fan 42, and the amount of the outside air hitting the wind guide portion 48b increases excessively. It is possible to suppress an excessive decrease in the amount of outside air flowing through the region corresponding to the position where the guide portion 48 is formed. Therefore, it is possible to reliably prevent the air curtain from being broken not only at the outer side of the outer end portions 42a and 42b of the fan 42 but also at the position corresponding to the wind guide portion 48, so that the freezer 20 The air curtain can be reliably formed in a wide range of the opening 20b.

  Moreover, in 1st Embodiment, the fan 42 of the crossflow fan 40 is formed by connecting the eight fan members 45 along the axial direction (Y direction) where the rotating shaft A extends. Thereby, since the size of the fan 42 can be adjusted by changing the number of the fan members 45 according to the length in which the cross flow blower 40 is arranged, a dedicated cross flow is provided for each freezer 20 having a different size. There is no need to provide the blower 40. Thereby, the cross flow fan 40 can be easily applied to different types of refrigeration vehicles 100.

  In the first embodiment, as a blower that forms an air curtain, an axial flow fan or a turbo fan is used by using a cross flow blower 40 that sucks and blows outside air from a radial direction orthogonal to the axial direction (Y direction). Compared to the case of using a blower that sucks and blows outside air from the axial direction, the outside air can be blown down straight without providing a complicated duct structure such as a honeycomb structure. Thereby, the crossflow fan 40 can be reduced in size and simplified. Moreover, since the complicated duct structure becomes unnecessary in the crossflow fan 40, it can suppress that a pressure loss arises due to a complicated duct structure. Thereby, since pressure loss can be made small, the output of the motor 44 can be made small. As a result, the heat generated by the operation of the cross flow blower 40 disposed inside the freezer 20 can be reduced, so that the power consumption required to cool the inside of the freezer 20 can be reduced. Furthermore, since the pressure loss can be reduced, the motors 44 for compensating for the pressure loss become unnecessary, and as a result, the number of motors 44 can be reduced.

[Second Embodiment]
A second embodiment will be described with reference to FIGS. In the second embodiment, a case where the present invention is applied to the refrigerated warehouse 200 will be described. The refrigerated warehouse 200 is an example of the “freezer” in the present invention.

  As shown in FIG. 14, the refrigerated warehouse 200 according to the second embodiment includes a freezer compartment (freezer compartment) 220, a cooling unit 230 that cools the inside of the freezer compartment 220, and a cross flow fan 240. An open / close door 224 is provided in the opening 220b of the freezer compartment 220 so as to be openable and closable. In addition, an open / close door switch 81 that detects the door open state and the door closed state of the open / close door 224 is provided on the outer surface of the frame body 220a that the inner surface of the open / close door 224 contacts when the door is closed. The freezer compartment 220 is an example of the “storage” in the present invention, and the open / close door switch 81 is an example of the “open / closed state detection unit” in the present invention.

  The cooling unit 230 is suspended from the inner surface 223a of the ceiling portion 223 on the side opposite to the opening / closing door 224 (X1 side). Moreover, the cross flow fan 240 is installed in the vicinity (X2 side) of the open / close door 224. In this case, the cross flow fan 240 is suspended from the inner surface 223a of the ceiling portion 223 at an interval that allows air (cold air inside the cabinet) to flow. In addition, as shown in FIG. 13, when the open / close door 224 is closed, the inner surface of the open / close door 224 is opposed (facing directly) to the outside air suction port 41 e of the cross flow fan 240 with a slight gap. The outside air suction port 41e is configured to be substantially closed by the inner surface of the open / close door 224.

  Further, as shown in FIG. 13, the cross flow fan 240 is provided with an air guide path 201 through which air from the fan 42 circulates inside the housing 41. The inner surface of the air guide path 201 extends downward, and a louver mechanism 202 capable of adjusting the direction of the airflow to be blown out is provided in the air guide path 201. The louver mechanism 202 is configured such that two wing plates 202a are rotatably connected, and the wing plates 202a are automatically swung by a built-in drive source (not shown). The louver mechanism 202 is an example of the “wind direction adjusting unit” in the present invention.

  In addition, the cross-flow fan 240 has an internal air suction port 203 and an internal air suction port on the upper surface (top surface) of the housing 41 in order to suck the air cooled by the cooling unit 230 by the fan 42. A shutter member 204 that opens and closes 203 is provided. In the second embodiment, the shutter member 204 is slid in the direction of the arrow X1 or the direction of the arrow X2 by a driving source (not shown) such as a motor, so that the inside of the chamber is changed according to the operating state of the cross flow fan 240. The air suction port 203 is configured to open and close.

  As a result, as shown in FIG. 15, in the state where the opening / closing door 224 is opened, the shutter member 204 (see FIG. 13) is closed, while the outside air suction port 41e is opened together with the opening of the opening / closing door 224 (released state). ). At this time, the louver mechanism 202 (see FIG. 13) is driven so that the air in the air guide path 201 is blown down obliquely backward (X2 side). Therefore, in a state where the open / close door 224 is opened, outside air is sucked into the fan 42 through the outside air suction port 41e, and outside air from the fan 42 is caused by the louver mechanism 202 from the lower end portion 220d of the opening 220b of the freezer compartment 220. Is also blown down to the outside. This point (the state of the air curtain airflow) is the same as in the first embodiment.

  The refrigerated warehouse 200 is configured such that the direction of the air curtain airflow formed with the open / close door 224 opened is adjusted in detail. Specifically, a humidity sensor 85 is provided outside the refrigerated warehouse 200. As shown in FIG. 16, the swing angle of the louver mechanism 202 is changed (increased / decreased) in accordance with the outside humidity (relative humidity) detected by the humidity sensor 85.

  For example, when the humidity of the outside air is low, the swing angle from the vertical direction (Z direction) (inclination angle in the direction of arrow X2 with respect to the vertical direction of the wing plate 202a in FIG. 13) is reduced to increase the inclination. Control is performed to produce an air curtain airflow (directed more downward). Further, when the humidity of the outside air is high, the swing angle from the vertical direction (Z direction) (inclination angle in the arrow X2 direction with respect to the vertical direction of the slats 202a) is increased, and the air is blown out more diagonally rearward. Control is performed to generate an air curtain airflow that has a small inclination (becomes slanted backward). Therefore, when the humidity outside the refrigerator (relative humidity) is low, an operation mode of “emphasis on internal temperature” in which the air curtain airflow is strengthened and the temperature in the freezer compartment 220 is maintained is selected. In addition, when the humidity outside the chamber is high, the “condensation suppression priority” operation mode is selected in which the air curtain airflow using the humid outside air is prevented from coming into contact with the floor surface 222a in the freezer compartment 220.

  Note that the relationship of the swing angle of the louver mechanism 202 according to the outside air condition (the shape of the graph in FIG. 16) has been experimentally acquired in advance. The correlation is stored (set) in a control program that controls the operation of the refrigerated warehouse 200 as a numerical table or a function. FIG. 16 conceptually shows the relationship between the humidity and the swing angle, and the swing angle may be different even at the same humidity depending on the size of the refrigerated warehouse 200 (opening 220b). In addition, as to which humidity is set to switch between the operation mode of “in-chamber temperature emphasis” and the operation mode of “condensation suppression emphasis”, the set value may be fixed, or the user side It may be possible to adjust appropriately according to the use environment (change in season, etc.).

  In the second embodiment, as shown in FIGS. 13 and 14, when the open / close door 224 is closed, the shutter member 204 is operated to open the internal air suction port 203, while the outside air suction port. 41e is closed by the opening / closing door 224. At this time, the louver mechanism 202 is driven so that the air in the air guide path 201 is blown down along the opening / closing door 224 in a direction directly below (arrow Z2 direction) or slightly obliquely forward (X1 side). . Therefore, in the state where the opening / closing door 224 is closed, as shown in FIG. 14, the air cooled by the cooling unit 230 is caused by the louver mechanism 202 in the vicinity of the lower end portion 220d of the opening / closing door 224 of the freezer compartment 220 or from the lower end portion 220d. It is blown down inside the freezer compartment 220. As a result, when the open / close door 224 is closed, the cool air cooled by the cooling unit 230 circulates in the freezer compartment 220.

  In addition, when the open / close door switch 81 detects the closed state of the open / close door 224 from the open state of the open / close door 224, the air cooled by the cooling unit 230 circulates in the freezer compartment 220. The direction of the airflow by the louver mechanism 202 (blade 202a: see FIG. 13) of the cross flow fan 240 is adjusted. Note that the louver mechanism 202 may be fixed at a fixed inclination angle in the obliquely forward direction, and operates so as to periodically swing (swing) between the directly downward direction and the obliquely forward direction. May be. Thereby, even when the operation of the cooling unit 230 is restarted when the user closes the open / close door 224, the circulation of cold air is suppressed, and the occurrence of temperature unevenness in the freezer compartment 220 is suppressed, and the freezer compartment Rapid cooling within 220 is achieved. The refrigerated warehouse 200 according to the second embodiment is configured as described above.

(Effect of 2nd Embodiment)
In the second embodiment, as described above, the louver mechanism 202 capable of adjusting the direction of the airflow is provided in the air guide path 201 of the cross flow fan 240. Then, the air cooled by the cooling unit 230 is blown down by the louver mechanism 202 in the vicinity of the lower end portion 220d of the opening 220b of the freezer compartment 220 or inside the lower end portion 220d with the open / close door 224 closed. To do. Thereby, in the state where the open / close door 224 is closed, the cold air blown out from the cooling unit 230 can be uniformly distributed in the freezer compartment 220 using the cross-flow blower 240. The temperature management accuracy can be improved by suppressing the temperature unevenness.

  Moreover, in 2nd Embodiment, in addition to the external air suction port 41e, the cross-flow fan 240 is provided with the internal air suction port 203 through which the air cooled by the cooling unit 230 by the fan 42 is sucked. Then, the outside air suction port 41e is closed and the internal air suction port 203 is opened, so that the air cooled by the cooling unit 230 is opened by the louver mechanism 202 with the open / close door 224 closed. The part 220b is configured to circulate in the freezer compartment 220 by being blown down in the vicinity of the lower end part 220d or inward of the lower end part 220d. Accordingly, even when the open / close door 224 is closed, the cold air blown out from the cooling unit 230 can be sucked and sucked through the internal air suction port 203 provided in the cross flow fan 240. The cool air can be reliably blown into the freezer compartment 220 through the air guide path 201. Therefore, temperature unevenness in the freezer compartment 220 can be reliably suppressed.

  In the second embodiment, when the open / close door switch 81 detects the closed state of the open / close door 224 from the open state of the open / close door 224, the air cooled by the cooling unit 230 passes through the freezer compartment 220. The cross flow blower 240 is configured to adjust the direction of the air flow by the louver mechanism 202 so as to circulate. Thus, after the opening / closing door 224 is closed, the airflow blown out from the cross flow fan 240 is circulated in the freezer compartment 220 in synchronization with the cooling unit 230 being cooled by the cooling unit 230. Therefore, the inside of the freezer compartment 220 can be rapidly cooled while suppressing the occurrence of temperature unevenness in the freezer compartment 220.

  In the second embodiment, the open / close door 224 is opened and blown down from the cross-flow blower 240 to the outside of the lower end portion 220d of the opening 220b of the freezer compartment 220 based on the humidity outside the freezer compartment 220. The airflow direction is adjusted by the louver mechanism 202. Thereby, according to the outside air condition (humidity outside the freezer compartment 220), the occurrence of condensation on the floor surface 222a of the freezer compartment 220 is further suppressed, or the outside air enters the inside of the freezer compartment 220 by the air curtain. The user can appropriately select whether to suppress this.

[Modification]
The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above description of the embodiment but by the scope of claims for patent, and further includes all modifications (modifications) within the meaning and scope equivalent to the scope of claims for patent.

  For example, in the first embodiment, the lower end 20d of the opening 20b of the freezer 20 is inclined by tilting the inclined portion 41i downward (Z2 direction) from the opening 20b to the rear side (X2 direction). Although an example in which the outside air is blown down at a position separated by a distance L toward the outside (X2 side) is shown, the present invention is not limited to this. In the present invention, for example, instead of providing an inclined portion, an air guide plate that inclines rearward as a part of the air guide passage is provided at the discharge port, so that the outside air is directed outward from the lower end portion of the opening of the freezer. May be configured to be blown down.

  Moreover, although the said 1st Embodiment showed the example comprised so that external air might be blown down to the position which left | separated only the distance L toward the outer side (X2 side) from the lower end part 20d of the opening part 20b of the freezer 20. The present invention is not limited to this. In the present invention, it is only necessary that the outside air is blown down outside the lower end portion of the opening of the freezer. For example, the outside air may be blown down outside the vicinity of the lower end portion of the opening.

  Moreover, in the said 1st Embodiment, although the example which comprised the fan 42 from the eight fan members 45 was shown, this invention is not limited to this. In the present invention, the fan may be composed of fan members other than eight. That is, what is necessary is just to change the number of fan members according to the length by which a cross flow fan is arrange | positioned.

  Moreover, in the said 1st Embodiment, although the example which used a pair of crossflow fan 40 in order to form an air curtain was shown, this invention is not limited to this. In the present invention, one cross flow blower or three or more cross flow blowers may be used to form the air curtain. In addition, it is preferable to provide a cross flow fan according to the number of doors so that it can operate | move separately for every door.

  Further, in the first embodiment, the Y1 side wind guide portion 48 is disposed so as to be inclined in the direction toward the outer side (Y1 side) in the axial direction at an inclination angle θ2 of about 60 degrees with respect to the rotation axis A. In addition, although the wind guide portion 48 on the Y2 side is disposed so as to be inclined in the direction toward the outer side (Y2 side) in the axial direction at an inclination angle θ3 of about 60 degrees with respect to the rotation axis A. The present invention is not limited to this. In the present invention, the inclination angle of the wind guide portion may not be about 60 degrees. At this time, the inclination angle of the wind guide portion is preferably an inclination angle of 45 degrees or more and less than 90 degrees.

  In the first embodiment, the pair of wind guide portions 48 is provided on the Y1 side and the pair of wind guide portions 48 is provided on the Y2 side. However, the present invention is not limited to this. In the present invention, the number of wind guide portions is not particularly limited.

  Moreover, in the said 1st Embodiment, when the engine 12 was an ON state, the example which the cross flow fan 40 is not act | operated was shown, However, This invention is not limited to this. In the present invention, even when the engine is on, when the open / close door (the left door and / or the right door) is opened, the operation of the cross flow blower may be started. Thereby, since the intrusion of outside air into the freezer can be suppressed by the air curtain formed by the cross-flow fan while the cooling unit is operated, the breakage (water wetting) of the product in the freezer is surely suppressed. It is possible.

  In the second embodiment, the direction of the airflow blown outward from the cross flow fan 240 is adjusted based on the humidity outside the freezer compartment 220 (relative humidity), but the present invention is not limited to this. For example, the direction of the airflow blown outward from the cross flow fan 240 may be adjusted based on the temperature and humidity outside the freezer compartment 220. In this case, the air dryness (dryness) is acquired by the outside air temperature and humidity, and the swing angle (inclination angle with respect to the vertical direction of the slats 202a) when the acquired air dryness is relatively small. The louver mechanism 202 may be driven to increase the swing angle when the air dryness is relatively large. Also by this, the formation mode of the air curtain airflow according to external air conditions can be selected appropriately on the user side.

  In the second embodiment, the swing angle of the louver mechanism 202 is adjusted according to the humidity outside the warehouse, but the present invention is not limited to this. That is, the swing angle of the louver mechanism 202 when the open / close door 224 is opened (inclination angle in the direction of the arrow X2 with respect to the vertical direction of the slats 202a) may be set to an optimum value acquired in advance by actual measurement.

10 Vehicle body 20 Freezer (storage)
20b Opening 20c Upper end 20d Lower end 23a Inner surface (upper surface)
DESCRIPTION OF SYMBOLS 30 Cooling unit 40, 240 Cross flow fan 41e Outside air suction port 41h, 201 Air guide path 41i Inclined part 42 Fan 42a, 42b Outer end part 45 Fan member 48 Wind guide part 81 Opening / closing door switch (opening / closing state detection part)
100 Refrigeration car 200 Refrigerated warehouse (freezer)
202 Louver mechanism (wind direction adjustment part)
203 Inside air suction port 220 Freezer compartment (storage)
224 Open / close door A Rotation axis

Claims (9)

Storage,
A cooling unit for cooling the inside of the storage;
A cross flow blower that is disposed along the upper end of the opening of the storage on the upper surface inside the storage and forms an air curtain;
The cross flow blower includes a fan that is rotatable about a rotation axis extending along an upper end portion of the opening of the storage, an outside air suction port from which outside air is sucked by the fan, and the outside air from the fan. A freezer comprising an air guide path that guides the air to blow outward from the lower end of the opening of the warehouse.   2. The freezer according to claim 1, wherein the air guide path has an inclined portion that inclines in an outward direction from an opening of the storage.   The air guide path is disposed at a position corresponding to the vicinity of the outer end portion of the fan in the axial direction in which the rotation axis extends, and is inclined outward in the axial direction to be outside the outer end portion of the fan. The freezer of Claim 1 or 2 which has a wind guide part which guides external air to.   The freezer according to claim 3, wherein the wind guide portion is disposed so as to be inclined in a direction toward the outer side in the axial direction at an angle of 45 degrees or more and less than 90 degrees with respect to the rotation axis.   The freezer according to any one of claims 1 to 4, wherein the fan of the cross-flow fan is formed by connecting a plurality of fan members along an axial direction in which the rotation axis extends. The storage includes an opening / closing door that opens and closes an opening of the storage,
The air guide path of the cross-flow fan has a wind direction adjustment unit capable of adjusting the direction of the air flow,
With the open / close door opened, outside air from the fan is blown down outside the lower end of the opening of the storage by the airflow direction adjustment unit, and the open / close door is closed, The air cooled by the cooling unit is configured to be blown down near the lower end of the opening of the storage or inside the lower end by the wind direction adjusting unit. Freezer according to item. In addition to the outside air suction port, the cross flow blower further includes an internal air suction port through which the air cooled by the cooling unit is sucked by the fan.
When the outside air suction port is closed and the internal air suction port is opened, the air cooled by the cooling unit is opened by the wind direction adjusting unit in the state where the open / close door is closed. The freezer according to claim 6, wherein the freezer is configured to circulate in the storage by being blown down in the vicinity of the lower end portion or inside the lower end portion. An opening / closing state detection unit for detecting an opening / closing state of the door;
When the open / closed state detection unit detects that the open / closed door is closed from the opened state, the crossing is performed so that the air cooled by the cooling unit circulates in the storage. The freezer of Claim 6 or 7 comprised so that the direction of the airflow by the said wind direction adjustment part of a flow blower may be adjusted.   With the open / close door open, the direction of the airflow blown down outside the lower end of the opening of the storage from the cross-flow fan based on at least one of temperature and humidity outside the storage. The freezer of any one of Claims 6-8 comprised so that it may be adjusted with the said wind direction adjustment part.

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