JP2017215110A - Air curtain device and refrigeration warehouse - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air curtain device capable of sufficiently acquiring a thermally split state (heat shielding effect) between one region and the other region by double air curtain airflows.SOLUTION: An air curtain device installed in a refrigeration warehouse 100 includes: a left chamber air blowing part 20 provided at one part of a partition wall 13 for partitioning a left chamber 11 and a right chamber 12 arranged next to each other, and for generating an airflow P1 on the left chamber 11 side of an opening 14 with respect to the opening 14 for connecting the left chamber 11 and the right chamber 12; a right chamber air blowing part 40 for generating an airflow P2 on the right chamber 12 side of the opening 14; and air shielding members 25 and 45 for suppressing the air of at least one of the left chamber 11 and the right chamber 12 entering at least one of a gap S1 between the partition wall 13 and the airflow P1 and a gap S2 between the partition wall 13 and the airflow P2.SELECTED DRAWING: Figure 3

Description

  The present invention relates to an air curtain device and a refrigerated warehouse, and more particularly, to an air curtain device including a first air blowing unit and a second air blowing unit, and a refrigerated warehouse provided with the air curtain device.

  Conventionally, a configuration in which a double air curtain airflow is generated with respect to an opening connecting the first region and the second region to obtain a heat blocking effect is known (see, for example, Patent Document 1).

  In the above-mentioned Patent Document 1, in a refrigerated warehouse in which an entrance / exit (opening) is provided in a part of a wall portion, an air curtain device (a first curtain) is provided on each of the inner wall surface and the outer wall surface corresponding to the upper edge of the entrance / exit. An outside air shut-off device for a refrigerated warehouse in which an air blowing unit and a second air blowing unit) are installed is disclosed. In the outside air shutoff device for a refrigerated warehouse described in Patent Document 1, the air blown from the air curtain device inside the warehouse (air curtain airflow) and the air blown from the air curtain device outside the warehouse (air curtain airflow) are the entrance / exit space. Is configured to be sandwiched from inside and outside. As a result, the outflow of cold air inside the refrigeration warehouse from the entrance / exit space and the inflow of air outside the refrigeration warehouse (warm air) into the refrigeration warehouse are blocked by the dynamic pressure of the double air curtain airflow. Thus, a thermal division state (thermal blocking effect) between the inner side and the outer side in the entrance / exit space is achieved.

Japanese Utility Model Publication No. 62-69781

  However, in the outside air shutoff device for a refrigerated warehouse described in Patent Document 1, the warm air outside the refrigerated warehouse has a double air curtain airflow due to the air curtain airflow blown downward from the upper edge of the entrance / exit. It is thought that it becomes easy to get caught in an inner region (region where air is stagnated at the entrance / exit). And, because warm air flows into the area inside the double air curtain airflow, warm air outside the cold storage warehouse flows into the cold storage warehouse from the gap between the side wall of the entrance and exit and the air curtain airflow. The cold air in the refrigeration warehouse flows out of the refrigeration warehouse through the gap. For this reason, there exists a problem that the state (heat-blocking effect) which thermally divides | segments the warehouse inner side and the warehouse outer side by a double air curtain airflow is not acquired sufficiently.

  The present invention has been made in order to solve the above-described problems, and one object of the present invention is to provide a thermal division state between one region and the other region (thermal insulation) by a double air curtain airflow. It is an object to provide an air curtain device and a refrigerated warehouse capable of sufficiently obtaining an effect.

  In order to achieve the above object, an air curtain device according to a first aspect of the present invention is provided in a part of a partition wall that separates a first region and a second region that are adjacently disposed, and a first region and a second region. A first air blowing unit that generates a first air curtain airflow on the first region side of the opening and a second air blowing unit that generates a second air curtain airflow on the second region side of the opening with respect to the opening connecting the regions And a wind-shielding member that suppresses at least one of the air in the first region or the second region from entering a gap between the partition wall and at least one of the first air curtain airflow or the second air curtain airflow. Prepare.

  In the air curtain device according to the first aspect of the present invention, as described above, at least one of the first region and the second region has at least one of the partition wall and the first air curtain airflow or the second air curtain airflow. And a wind shielding member that suppresses entry into the gap. As a result, a double air curtain air flow of the first air curtain air flow and the second air curtain air flow is formed in the opening in which a part of the partition wall separating the first region and the second region arranged adjacent to each other is opened. Even in the case of thermal partitioning (heat shut-off), the wind-shielding member causes the first region or the second region between the partition wall and at least one of the first air curtain airflow or the second air curtain airflow. It is possible to prevent a gap that allows air to enter. That is, the air in the first region or the second region enters the inner region of the double air curtain airflow (the region in which the air is stagnant) through the gap generated when the windshield member is not provided. Can be suppressed. As a result, it is possible to sufficiently obtain a thermal division state (heat blocking effect) between one region (first region) and the other region (second region) due to the double air curtain airflow.

  In the air curtain device according to the first aspect described above, preferably, the first air blowing section and the second air blowing section extend from one side end portion along the upper edge portion of the opening in the partition wall to the other side end portion. The air shielding member is installed in the first air curtain airflow from positions corresponding to the vicinity of one end and the vicinity of the other end of at least one opening of the first air blowing part or the second air blowing part. Alternatively, it extends toward at least one of the second air curtain airflows and extends downward. If comprised in this way, the wind-shielding member extended below starting from the at least one vicinity of the 1st ventilation part or the 2nd ventilation part in the position corresponding to each of the one side edge part vicinity of an opening, and the other side edge part vicinity Can be arranged. As a result, a gap is formed in the vicinity of at least one of the first air blowing unit or the second air blowing unit so that air having a temperature different from that of other portions staying in the upper region of the first region or the second region enters. Can be surely prevented.

  In the configuration in which the wind shield member extends downward from a position corresponding to each of the vicinity of one side end and the vicinity of the other side end of at least one opening of the first air blowing part or the second air blowing part, preferably the air shielding member. The wind member is located below the end of the blower outlet that blows out the first air curtain airflow of the first blower, or inside the end of the blowout outlet that blows out the second air curtain airflow of the second blower. Each includes an upper end portion disposed on at least one of the lower sides. If comprised in this way, a part of 1st air curtain airflow and 2nd air curtain airflow will be guide | induced to the outer area | region opposite to the area | region inside a double air curtain airflow across a wind-shielding member. Can do. Therefore, since the area | region inside a double air curtain airflow can be surrounded by the 1st air curtain airflow and the 2nd air curtain airflow, the size of a wind-shielding member can be reduced in size.

  In this case, preferably, the wind-shielding member includes an inclined portion extending obliquely downward from the upper end portion toward the side of the opening, and a side portion extending downward from the lower end portion of the inclined portion, A part of at least one of the first air curtain airflow and the second air curtain airflow is configured to flow down the outer surface of the inclined portion and the side portion. If comprised in this way, a part of 1st air curtain airflow and 2nd air curtain airflow will be along the outer surface of an inclination part and a side part, and at least one floor surface vicinity of a 1st area | region or a 2nd area | region Can lead to. Therefore, the area | region inside a double air curtain airflow can be surrounded more reliably by the 1st air curtain airflow and the 2nd air curtain airflow.

  In the air curtain device according to the first aspect, preferably, the opening is configured to be opened and closed by an opening / closing door, and the wind-shielding member is configured such that the wind-shielding portion can be rolled up and pulled out downward. The wind shield member winds up the wind shield portion based on the opening being closed by the door, and pulls the wind shield portion downward when the opening is opened by the door. It is configured as follows. With this configuration, the double air curtain air flow of the first air curtain air flow and the second air curtain air flow is generated in the opening only when the opening is opened by the open / close door. In this case, the heat shielding effect of the double air curtain air flow that is temporarily generated can be effectively obtained by the wind shielding portion drawn out below the wind shielding member. In addition, when the opening is closed by an open / close door (when a double air curtain airflow is not required), the wind-shielding part is wound upward, thereby saving space (miniaturizing) the wind-shielding member. It can be easily achieved.

  In this case, it is preferable to further include an approach state detection unit that detects an approach state of the worker to the opening, and based on a detection result of the approach state detection unit, before the worker passes through the opening, the first blower unit And while the 2nd ventilation part is drive | operated, it is comprised so that the wind-shielding part of a wind-shielding member may be pulled out below. With this configuration, it is possible to quickly and appropriately form a double air curtain airflow for obtaining a heat shielding effect prior to the timing when the opening is opened by the opening / closing door in accordance with the necessity of passing by the operator. it can. Therefore, even when an opening is opened and an operator (including an operator who has boarded a moving vehicle) passes through the opening, it is not affected by disturbance elements associated with opening and closing of the opening, and the double air curtain airflow. It is possible to reliably obtain a thermal division state (heat blocking effect) between one region (first region) and the other region (second region).

  In the air curtain device according to the first aspect, preferably, an abnormal state detection unit that detects an abnormality of at least one of the first air blowing unit or the second air blowing unit and an opening opened by the open / close door can be blocked. An abnormal-time opening blocking member, and the wind-shielding member is configured such that the wind-shielding portion can be rolled up and pulled out downward. When an abnormality is detected in at least one of the two air blowing units, the opening is blocked by the abnormal-time opening blocking member, and the wind blocking portion of the wind blocking member is drawn downward. According to this structure, even if an abnormality occurs in at least one of the first air blowing unit or the second air blowing unit and it is impossible to form a double air curtain airflow at the opening, The opening can be blocked using an abnormal opening blocking member serving as a substitute member for the door, and the opening can be surrounded by a wind shielding portion drawn below the wind shielding member. As a result, it is possible to reliably maintain the thermal division (heat cutoff) state between the one region (first region) and the other region (second region).

  A refrigerated warehouse according to a second aspect of the present invention includes the air curtain device according to the first aspect.

  Since the refrigerated warehouse according to the second aspect of the present invention includes the air curtain device according to the first aspect as described above, the first air curtain airflow from the first air blower and the second air blower from Provided a refrigerated warehouse that can sufficiently obtain a thermal division state (heat shielding effect) between one region (first region) and the other region (second region) by a double air curtain air flow by the second air curtain air flow can do.

  ADVANTAGE OF THE INVENTION According to this invention, as mentioned above, the air curtain apparatus and refrigeration warehouse which can fully acquire the heat-shielding effect of one area | region and the other area | region by a double air curtain airflow can be provided.

It is sectional drawing which showed the structure of the refrigerating warehouse where the air curtain apparatus by 1st Embodiment of this invention was installed. It is a control block diagram for performing temperature maintenance of the refrigerated warehouse in 1st Embodiment of this invention. It is the perspective view which showed the structure of the air curtain apparatus installed in the refrigerator warehouse by 1st Embodiment of this invention. It is the perspective view which showed the structure of the air curtain apparatus as a comparative example with respect to the air curtain apparatus by 1st Embodiment of this invention. It is the perspective view which showed the structure of the air curtain apparatus installed in the refrigerator warehouse by 2nd Embodiment of this invention. It is a control block diagram for performing temperature maintenance of the refrigerated warehouse in 3rd Embodiment of this invention. It is the perspective view which showed the structure (The state where the wind-shielding part in the wind-shielding member was wound up) of the air curtain apparatus installed in the refrigerator warehouse by 3rd Embodiment of this invention. It is the perspective view which showed the structure (The state where the wind-shielding part in the wind-shielding member was pulled out) of the air curtain apparatus installed in the refrigerator warehouse by 3rd Embodiment of this invention. It is a control block diagram for performing temperature maintenance of the refrigerated warehouse in 4th Embodiment of this invention. It is the perspective view which showed the structure (operation state at the time of abnormality occurrence) of the air curtain apparatus installed in the refrigerator warehouse by 4th Embodiment of this invention.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Embodiments of the invention will be described below with reference to the drawings.

[First Embodiment]
First, with reference to FIGS. 1-4, the refrigerated warehouse 100 by 1st Embodiment of this invention is demonstrated. In FIG. 1, the arrangement direction of the left chamber 11 and the right chamber 12 is the X-axis direction (left-right direction), the direction orthogonal to the X-axis direction in the horizontal plane is the Y-axis direction, and the vertical direction is the Z-axis direction. . The left chamber 11 and the right chamber 12 are examples of “first region” and “second region” in the claims, respectively.

(Schematic configuration of refrigerated warehouse)
The refrigerated warehouse 100 by 1st Embodiment is provided with the refrigerator compartment 10 as shown in FIG. In the refrigerator compartment 10, a left chamber 11 and a right chamber 12 are arranged adjacent to each other in the X-axis direction with a partition wall 13 as a boundary. A wall surface 13 a of the partition wall 13 faces the left chamber 11, and a wall surface 13 b faces the right chamber 12. The left chamber 11 stores articles 1 that can be stored under a condition where the room temperature is T1. The right chamber 12 stores articles 2 that can be stored under conditions where the room temperature is T2. Here, the temperature T2 is kept lower than the temperature T1. The partition wall 13 is provided with a vertically long and rectangular opening 14 through which an operator (not shown) can come and go. In FIG. 1, the cross section of the refrigerator compartment 10 along the X-axis direction in the part of the opening 14 is shown.

  In the left chamber 11, a left ventilating unit 20 and a left ventilating cooling unit 30 are installed. In the right chamber 12, a right ventilating unit 40 and a right ventilating cooling unit 50 are installed. Here, the left ventricular cooling unit 30 has a function of cooling the left chamber 11 and maintaining the temperature T1, and the right ventricular cooling unit 50 has a function of cooling the right chamber 12 and maintaining the temperature T2. Further, the left ventricular blower 20 is installed horizontally (Y-axis direction) on the wall surface 13a corresponding to the upper edge 15 (Z1 side) of the opening 14, and the right ventilator blower 40 has the upper edge of the opening 14. It is installed horizontally on the wall surface 13b corresponding to the portion 15 (Z1 side). Further, the left ventricular blower 20 and the right ventricular blower 40 extend in an elongated shape along the upper edge 15 of the opening 14. The left ventricular air blowing unit 20 and the right ventricular air blowing unit 40 have a role of blocking the heat transfer of air from the left chamber 11 having the temperature T1 to the right chamber 12 having the temperature T2 through the opening 14. . The left ventricular blower 20 and the right ventricular blower 40 are examples of the “first blower” and the “second blower” in the claims, respectively.

  As shown in FIG. 2, the refrigerated warehouse 100 includes a controller device 70 that maintains the temperature in the refrigerated room 10. The controller device 70 includes an overall control unit 71, an air curtain device control unit 72, and a cooling control unit 73. The air curtain device control unit 72 is responsible for operation control of the left ventricular blower unit 20 and the right ventricular blower unit 40, and the cooling control unit 73 is responsible for operation control of the left ventricular cooling unit 30 and the right ventricular cooling unit 50. The left chamber 11 is provided with a temperature sensor 81 for detecting the temperature T1, and the right chamber 12 is provided with a temperature sensor 82 for detecting the temperature T2, each of which is electrically connected to the overall control unit 71. It is connected. Further, the control of the left ventricular blower 20 and the right ventricular blower 40 and the control of the left ventricular cooling unit 30 and the right ventricular cooling unit 50 are performed based on the command of the overall control unit 71, so that the circulation flow G1 of the cold air and G2 (see FIG. 1) is formed in the left chamber 11 and the right chamber 12, respectively.

(Structure of air curtain device)
As shown in FIG. 1, the left ventricular blower 20 and the right ventricular blower 40 are arranged back to back with the partition wall 13 as a boundary. The left ventricular blower 20 forms an air flow P1 (shown by a broken line) that blows obliquely downward to the floor surface 11a of the left ventricle 11, and the right ventricular blower 40 extends to the floor 12a of the right ventricle 12. An airflow P2 (shown by a broken line) that blows down obliquely downward is formed. Airflows P1 and P2 are examples of “first air curtain airflow” and “second air curtain airflow” in the claims, respectively.

  In this case, the air flow P <b> 1 is blown down obliquely downward with a wind direction angle α with respect to the Z-axis direction in which the partition wall 13 extends and gradually separated from the wall surface 13 a. Further, the air flow P2 is blown down obliquely downward with a wind direction angle β with respect to the Z-axis direction and gradually separated from the wall surface 13b. Note that the wind direction angle α and the wind direction angle β are both set to about 30 degrees. The wind direction angles α and β are configured to be changeable within a range of about 10 degrees to about 40 degrees. Therefore, the airflows P1 and P2 are configured to be capable of forming airflows that are symmetrical in the directions of the arrows X1 and X2 with respect to the YZ plane in which the partition wall 13 extends.

  Thereby, in the left chamber 11, the circulation flow G1 which drives the left chamber air blower 20 and the left chamber cooling unit 30 and circulates clockwise is formed. In the right ventricle 12, a circulating flow G2 that circulates counterclockwise by operating the right ventilator 40 and the right ventrator cooling unit 50 is formed. The circulation flow G1 includes the air flow P1, and the circulation flow G2 includes the air flow P2. In the opening 14, a space Q (an air stagnant region in the opening 14) sandwiched between the air flow P <b> 1 from the left ventricular blower 20 and the air flow P <b> 2 from the right ventricular blower 40 is formed. In other words, the space Q corresponds to a heat blocking area provided inside the double air curtain airflow. Further, the space Q is formed so as to expand from the upper edge 15 of the opening 14 toward the floor surface 10a (floor surfaces 11a and 12a). Therefore, even if an operator (not shown) travels between the left chamber 11 and the right chamber 12 via the space Q, the left chamber 11 and the right chamber 12 have the internal temperature (temperatures T1 and T2). It is maintained without breaking down.

  Here, in the first embodiment, as shown in FIG. 3, a pair of wind shielding members 25 are attached in the vicinity of the left ventricular air blowing unit 20. In addition, a pair of wind shielding members 45 (shown by broken lines) are attached in the vicinity of the right ventricular blower 40. The left ventilating part 20 and the pair of wind shielding members 25 constitute an “air curtain device” as claimed in the claims, and the right ventilating part 40 and the pair of wind shielding members 45 claim a patent. The “air curtain device” in the range is configured. Hereinafter, the structure and role of the wind shielding members 25 and 45 will be described. The wind shielding members 25 and 45 have the same structure.

(Structure of wind shielding member)
As shown in FIG. 3, the wind shield member 25 has a flat plate shape and extends in the Z-axis direction (vertical direction). One wind shield member 25 is arranged with respect to the wall surface 13a from the vicinity of the one end portion 14a on the Y1 side of the opening 14 in the state where the upper end portion 25a is disposed in the vicinity of the lower end portion 21a on the Y1 side of the left ventilating air blowing portion 20. It extends in the direction of the vertical arrow X1. Further, the other wind shielding member 25 is arranged on the wall surface 13a from the vicinity of the other end portion 14b on the Y2 side of the opening 14 in a state where the upper end portion 25a is arranged in the vicinity of the lower end portion 21b on the Y2 side of the left ventilating air blowing portion 20. It extends in the direction of the arrow X1 perpendicular to it. Thereby, in the left chamber 11, the area | region Q1 below from the blower outlet 20b (refer FIG. 1) of the left ventilator ventilation part 20 in the space Q is pinched | interposed by the pair of wind-insulating members 25. In FIG. 3, in order to illustrate the structure around the opening 14, the wall portion 10 b existing on the back side (Y2 side) of the paper surface is illustrated, while the wall portion existing on the front side (Y1 side) of the paper surface is illustrated. It is omitted for convenience.

  A similar configuration is applied to the right ventricle 12 (X2 side). That is, a pair of wind shielding members 45 having a flat plate shape and extending in the Z-axis direction are attached to the right ventricular air blowing unit 40. One wind-shielding member 45 is arranged with respect to the wall surface 13b from the vicinity of one end portion 14a on the Y1 side of the opening 14 in the state where the upper end portion 45a is disposed in the vicinity of the lower end portion 41a on the Y1 side of the right ventilating air blowing portion 40. It extends along the direction of the vertical arrow X2. In addition, the other wind shield member 45 is arranged on the wall surface 13b from the vicinity of the other end portion 14b on the Y2 side of the opening 14 in a state where the upper end portion 45a is disposed in the vicinity of the lower end portion 41b on the Y2 side of the right ventilator air blowing portion 40. It extends in the direction of the arrow X2 perpendicular to it. Thereby, in the right ventricle 12, a region Q <b> 2 below the air vent 40 b (see FIG. 1) of the right ventilator 40 in the space Q is sandwiched between the pair of wind shielding members 45.

  Here, the flow of the circulating flow G1 will be described. As shown in FIG. 1, the cold air cooled by the left ventricular cooling unit 30 and blown out from the blower outlet 32 is sucked into the suction port 20 a of the left ventilator blowing unit 20 along the bottom surface 11 c of the ceiling part in the direction of the arrow X2. The cool air is blown obliquely downward from the air outlet 20b and reaches the floor surface 11a, then changes its direction and flows along the floor surface 11a along the direction of the arrow X1, and near the side wall portion on the X1 side. It is sucked into the suction port 31 of the left ventricular cooling unit 30 along the arrow Z1 direction. Therefore, a circulating flow G1 that circulates clockwise is formed in the left chamber 11. In addition, the cool air cooled by the right ventricular cooling unit 50 and blown out from the blower outlet 52 is sucked into the suction port 40a of the right ventricular blowing unit 40 along the lower surface 12c of the ceiling portion in the direction of the arrow X1. The cold air is blown obliquely downward from the air outlet 40b and reaches the floor surface 12a. Then, the cold air changes direction and flows along the floor surface 12a in the direction of the arrow X2, and near the side wall portion on the X2 side. It is sucked into the suction port 51 of the right ventricular cooling unit 50 along the arrow Z1 direction. Accordingly, a circulation flow G2 that circulates counterclockwise is formed in the right chamber 12.

  As shown in FIG. 3, the pair of wind shielding members 25 are provided below the left ventilating unit 20, so that during the operation of the left ventilating unit 20, Y 1 is more than the opening 14 in the left chamber 11. The air on the side and the Y2 side is configured not to be caught in the region Q1 (space Q). In addition, since the pair of wind shielding members 45 are provided below the right ventilating unit 40, air on the Y1 side and Y2 side from the opening 14 in the right chamber 12 is operated during the operation of the right ventilating unit 40. It is configured not to be caught in the region Q2 (space Q). Therefore, in a state in which the left ventricular blower 20 and the right ventricular blower 40 are operating, a space Q that is a region for performing heat insulation between the left chamber 11 and the right chamber 12 is reliably formed in the opening 14. It is configured.

  Below, the advantage at the time of providing the wind-shielding members 25 and 45 in the refrigerator compartment 10 is demonstrated.

  First, as a comparative example (conventional example), as shown in FIG. 4, the left ventilating unit 20 and the right ventilating unit in a state where the wind shielding members 25 and 45 (see FIG. 3) are not provided in the refrigerator compartment 10. Assume that 40 is driven. In this case, an air flow P1 is generated on the left chamber 11 side of the opening 14, and an air flow P2 is generated on the right chamber 12 side of the opening 14. A gap S1 (hatching region) is generated between the wall surface 13a of the partition wall 13 and the air flow P1, and a gap S2 (hatching region) is generated between the wall surface 13b of the partition wall 13 and the air flow P2. . Further, the gaps S1 and S2 are generated on both sides of the opening 14 on the Y1 side and the Y2 side, respectively. For this reason, even if a double air curtain airflow is formed in the opening 14, the air that is less likely to stay in the vicinity of the ceiling of the left chamber 11 is caught in the airflow P <b> 1 through the gap S <b> 1 and Air with little cooling staying in the vicinity of the ceiling is caught in the airflow P2 through the gap S2 and flows into (invades) the space Q. Then, in the left chamber 11, since the air that has little cooling flows into the space Q inside the double air curtain airflow, in the left chamber 11, from the portion of the gap S1 between the wall surface 13a and the airflow P1 in the vicinity of the floor surface 11a of the opening 14 The air with a relatively low temperature (temperature T2) in the right chamber 12 leaks out. In the right chamber 12, air having a relatively high temperature (temperature T1) in the left chamber 11 leaks from the gap S2 between the wall surface 13b and the air flow P2 in the vicinity of the floor 12a of the opening 14. Therefore, despite the existence of the space Q due to the double air curtain airflow, a phenomenon occurs in which air is exchanged between the left chamber 11 and the right chamber 12.

  On the other hand, in the first embodiment, as shown in FIG. 3, the pair of wind shielding members 25 and the wind shielding members 45 are provided on the Y1 side and the Y2 side of the opening 14, respectively. Even in the case where the opening 14 in which a part of the partition wall 13 separating the right chamber 12 and the right chamber 12 is opened to form a double air curtain airflow of the airflow P1 and the airflow P2 to be thermally divided (heat shut off), The wind shielding members 25 and 45 prevent the formation of a gap S1 (see FIG. 4) through which the air in the left chamber 11 enters between the partition wall 13 and the airflow P1, and the partition wall 13 and the airflow P2 A gap S2 (see FIG. 4) through which the air in the right chamber 12 enters is prevented from being formed therebetween. That is, the air in the left chamber 11 enters the space Q (region Q1) inside the double air curtain airflow through the gaps S1 and S2 (see FIG. 4) generated when the wind shielding members 25 and 45 are not provided. This prevents the air in the right ventricle 12 from entering the space Q (region Q2). Therefore, a thermal division state (heat blocking effect) between the left chamber 11 and the right chamber 12 by the double air curtain airflow is reliably obtained.

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

  In the first embodiment, as described above, at least one of the air in the left chamber 11 or the right chamber 12 enters the gap S1 between the partition wall 13 and the airflow P1 and the gap S2 between the partition wall 13 and the airflow P2. Wind shielding members 25 and 45 for suppressing the above are provided. As a result, a double air curtain airflow of the airflow P1 and the airflow P2 is formed in the opening 14 in which a part of the partition wall 13 that separates the left chamber 11 and the right chamber 12 that are adjacently arranged is opened, and is thermally Even in the case of division (heat shut-off), the air shielding members 25 and 45 allow the air in the left chamber 11 to enter between the partition wall 13 and the air flow P1, and the right chamber 12 between the partition wall 13 and the air flow P2. It is possible to prevent the formation of the gap S2 into which the air enters. That is, the air in the left chamber 11 or the right chamber 12 enters the space Q inside the double air curtain airflow through the gaps S1 and S2 generated when the wind shielding members 25 and 45 are not provided. Can be suppressed. As a result, it is possible to sufficiently obtain a thermal division state (heat blocking effect) between the left chamber 11 and the right chamber 12 by the double air curtain airflow. In addition, since the heat blocking effect between the left chamber 11 and the right chamber 12 can be reliably obtained, the left chamber cooling unit 30 and the right in the refrigerated warehouse 100 are not affected by the significant decrease in the internal temperature (temperatures T1 and T2). The power consumption of the room cooling unit 50 can be reduced.

  Moreover, in 1st Embodiment, it extends so that it may extend toward the airflow P1 from the position corresponding to each of the one side edge part 14a vicinity of the opening 14 of the left ventilator ventilation part 20, and the other side edge part 14b, and it may extend below. A wind shielding member 25 is configured. Further, the wind shielding member 45 is extended from the position corresponding to each of the vicinity of the one end 14a and the vicinity of the other end 14b of the opening 14 of the right ventilator 40 to the air flow P2 and to extend downward. Configure. Thereby, the wind shielding member 25 extending downward from the vicinity of the left ventilating part 20 and the right ventilating part 40 at the positions corresponding to the vicinity of the one end part 14a and the vicinity of the other end part 14b of the opening 14, and 45 can be arranged. Therefore, in the vicinity of the left ventricular blower 20 and the right ventricular blower 40, between the partition wall 13 and the airflow P1 blown out from the left ventricular blower 20 and the airflow P2 blown out from the right ventilator blower 40, It is possible to reliably prevent the formation of the gaps S1 and S2 that allow intrusion of less-cooled air staying in the upper region of the left chamber 11 or the right chamber 12.

(Second Embodiment)
Next, a second embodiment will be described with reference to FIG. In the second embodiment, unlike the first embodiment in which the wind shielding members 25 and 45 are configured to have a complete flat plate shape, a part of the region (the upper end portion 26a (46a)) is located inside the opening 14. An example in which the wind shielding member 26 (46) is formed by bending will be described. In the figure, components similar to those in the first embodiment are denoted by the same reference numerals as those in the first embodiment.

  In the refrigerated warehouse 200 according to the second embodiment, as shown in FIG. 5, a pair of wind shielding members 26 are attached in the vicinity of the left ventilating air blowing unit 20, and a pair of wind shielding members 46 in the vicinity of the right ventilating air blowing unit 40. (Shown in broken lines) is attached.

  Here, in 2nd Embodiment, a pair of wind-shielding member 26 is below inner side rather than the edge part 21c by the side of Y1, and the edge part 21d by the side of Y2 of the blower outlet 20b which blows off the air flow P1 of the left ventilator ventilation part 20. The upper end part 26a arrange | positioned is included. Each wind shield member 26 includes an inclined portion 26b extending obliquely downward from the upper end portion 26a toward the side of the opening 14, and a side portion extending downward from the lower end portion 26c of the inclined portion 26b. 26d. As a result, a part of the airflow P1 (shown by a broken line) of the airflow P1 flows down along the inclined portion 26b and the outer surface 26e of the side portion 26d. Further, the structure of the wind shield member 46 provided in the right chamber 12 is configured similarly to the wind shield member 26 provided in the left chamber 11.

  That is, the pair of wind shielding members 46 includes an upper end portion 46a disposed on the lower side inside the Y1 side end portion 41c and the Y2 side end portion 41d of the air outlet 40b that blows out the air flow P2 of the right ventricular blower portion 40. Including. Each wind shield member 46 includes an inclined portion 46b extending obliquely downward from the upper end portion 46a toward the side of the opening 14, and a side portion extending downward from the lower end portion 46c of the inclined portion 46b. 46d. Thereby, a part of the airflow P2 of the airflow P2 (indicated by a broken line) flows down along the outer side surface 26e of the inclined portion 26b and the side portion 26d. In addition, the other structure of the refrigerator warehouse 200 by 2nd Embodiment is the same as that of the said 1st Embodiment.

(Effect of 2nd Embodiment)
In 2nd Embodiment, as mentioned above, the upper end part 26a arrange | positioned inside the Y21 side edge part 21c and the Y2 side edge part 21d of the blower outlet 20b which blows off the airflow P1 of the left ventilator ventilation part 20 below. A pair of wind-shielding members 26 are configured to respectively include Further, a pair of air outlets 40b for blowing out the air flow P2 of the right ventilator 40 includes a Y1 side end 41c and a Y2 side end 41d and at least one upper end 46a disposed at the lower side inside the Y2 side end 41d. The wind shielding member 46 is configured. As a result, a part of the airflow P3 of the airflows P1 and P2 can be guided to the outer space region opposite to the inner space Q of the double air curtain airflow with the wind shielding members 26 and 46 interposed therebetween. Therefore, since the space Q inside the double air curtain airflow can be surrounded by the airflows P1 and P2, the size of each of the wind shielding members 26 and 46 can be reduced.

  Further, in the second embodiment, an inclined portion 26b that extends obliquely downward from the upper end portion 26a toward the side of the opening 14, and a side portion 26d that extends downward from the lower end portion 26c of the inclined portion 26b. The wind shielding member 26 is configured such that a part of the airflow P1 of the airflow P1 flows down along the outer surface 26e. The airflow P2 includes an inclined portion 46b extending obliquely downward from the upper end portion 46a toward the side of the opening 14 and a side portion 46d extending downward from the lower end portion 46c of the inclined portion 46b. The wind shielding member 26 is configured such that a part of the airflow P4 flows down along the outer surface 46e. Thereby, a part of the airflow P1 of the airflow P1 can be guided to the vicinity of the floor surface 11a of the left chamber 11 along the outer surface 26e. Further, a part of the airflow P2 of the airflow P2 can be guided to the vicinity of the floor surface 12a of the right chamber 12 along the outer surface 46e. Therefore, the space Q inside the double air curtain airflow can be more reliably surrounded by the airflows P1 and P2. The remaining effects of the second embodiment are similar to those of the aforementioned first embodiment.

(Third embodiment)
Next, a third embodiment will be described with reference to FIGS. In the third embodiment, unlike the first embodiment, an example will be described in which the wind shielding members 27 and 47 are configured so that the wind shielding portion is a roll-up type. In the figure, components similar to those in the first embodiment are denoted by the same reference numerals as those in the first embodiment.

  In the refrigerated warehouse 300 according to the third embodiment, as shown in FIG. 6, an electric door 60, electric wind shielding members 27 and 47, and proximity sensors 83 and 84 are provided. As shown in FIG. 7, the opening / closing door 60 is housed inside the partition wall 13 together with a drive mechanism (not shown) including an electric motor, and reciprocates (slides) in the direction of the arrow Y1 or the arrow Y2. Thus, the opening 14 is opened and closed. The proximity sensors 83 and 84 are examples of the “approach state detection unit” in the claims.

  Further, the wind shield members 27 and 47 are configured such that the wind shield portions 27b and 47b can be wound upward to be housed in the main body portions 27a and 47a and to be drawn downward. That is, the main body portions 27a and 47a incorporate a drive mechanism (not shown) including an electric motor for winding and pulling out the wind shield portions 27b and 47b by forward and reverse rotation. The proximity sensors 83 and 84 (indicated by a two-dot chain line) are embedded in the floor surfaces 11a and 12a and include an operator (not shown) who has boarded an operator (a mobile vehicle (forklift, etc.)) to the opening 14. ) To detect the approaching state.

  As shown in FIG. 6, the opening / closing door 60, the wind shielding members 27 and 47, and the approach sensors 83 and 84 are electrically connected to the overall control unit 71. Therefore, when it is detected by either one of the proximity sensors 83 and 84 that the operator has approached the opening 14, the opening 14 is opened by the open / close door 60 based on a command from the overall control unit 71. Yes. Further, the opening 14 is configured to be closed by the opening / closing door 60 when it is detected by the other one of the proximity sensors 83 and 84 that the operator has passed through the opening 14.

  Here, in the third embodiment, as shown in FIG. 7, the wind-shielding members 27 and 47 are configured such that the wind-shielding portions 27 b and 47 b are wound upward based on the opening 14 being closed by the opening / closing door 60. It is configured. Further, as shown in FIG. 8, the wind shielding portions 27b and 47b are automatically drawn downward from the main body portions 27a and 47a based on the opening 14 being opened by the opening / closing door 60 (see FIG. 7). It is configured. Further, based on the detection results of the proximity sensors 83 and 84, the left ventilator 20 and the right ventilator 40 are operated at a timing before the operator passes through the opening 14, and the wind shield portions 27b and 47b are operated. Is configured to be drawn downward. In addition, the other structure of the refrigerated warehouse 300 by 3rd Embodiment is the same as that of the said 1st Embodiment.

(Effect of the third embodiment)
In the third embodiment, as described above, the opening 14 is configured to be openable and closable by the open / close door 60, and the windshield members 27 and 47 can wind the windshield portions 27 b and 47 b upward and downward. It can be pulled out. The wind shielding portions 27b and 47b are wound upward based on the opening 14 being closed by the opening / closing door 60, and the wind shielding portions 27b and 47b are wound based on the opening 14 being opened by the opening / closing door 60. Wind shielding members 27 and 47 are configured to be drawn downward. Thus, the double air curtain airflow of the airflow P1 and the airflow P2 is generated in the opening 14 only when the opening 14 is opened by the opening / closing door 60. In such a case, the wind shielding member 27 is generated. And the wind-shielding portions 27b and 47b drawn below 47 can effectively obtain the heat-shielding effect of the double air curtain airflow that is temporarily generated. Further, when the opening 14 is closed by the open / close door 60 (when a double air curtain airflow is not required), the wind shielding portions 27b and 47b are wound upward so that the wind shielding members 27 and 47 Space saving (miniaturization) can be easily achieved.

  Moreover, in 3rd Embodiment, before an operator passes the opening 14 based on the detection result of the proximity sensors 83 and 84, while operating the left ventilating part 20 and the right ventilating part 40, the wind-shielding member 27 And the wind-shielding parts 27b and 47b of 47 are comprised so that it may pull out below. Thereby, prior to the timing at which the opening 14 is opened by the opening / closing door 60 in accordance with the necessity of passing by the operator, a double air curtain airflow for obtaining a heat shielding effect can be formed quickly and appropriately. Therefore, even when the opening 14 is opened and the operator passes through the opening 14, the left chamber 11 and the right chamber 12 due to the double air curtain airflow are not affected by the disturbance elements accompanying the opening and closing of the opening 14. It is possible to reliably obtain the thermal division state (heat blocking effect). The remaining effects of the third embodiment are similar to those of the aforementioned first embodiment.

(Fourth embodiment)
Next, a fourth embodiment will be described with reference to FIGS. 1, 6, 7, 9, and 10. In the fourth embodiment, an example in which a shutter member 65 that closes the opening 14 when the door 60 is broken will be described. In the figure, components similar to those in the third embodiment are denoted by the same reference numerals as those in the third embodiment. The shutter member 65 is an example of an “abnormality opening blocking member” in the claims.

  In the refrigerated warehouse 400 according to the fourth embodiment, as shown in FIG. 9, the abnormal state detection unit 85 and the shutter member 65 are different from the control configuration (see FIG. 6) in the refrigerated warehouse 300 according to the third embodiment. Furthermore, it is provided. The shutter member 65 is attached to the upper edge 15 (see FIG. 1) of the opening 14 together with a drive mechanism (not shown) including an electric motor. The shutter portion 65a is wound up in the direction of the arrow Z1 and pulled out in the direction of the arrow Z2 by forward and reverse rotation of the electric motor.

  Further, the abnormal state detection unit 85 has a function of detecting abnormal states of the left ventricular blower 20, the right ventricular blower 40, and the open / close door 60. The abnormal state detection unit 85 also has a function of detecting an abnormality in the left ventricular cooling unit 30 and the right ventricular cooling unit 50. Note that the “abnormal state” described here is, for example, that the drive mechanisms of the left ventricular blower 20, the right ventricular blower 40, and the open / close door 60 break down and fall into a state in which each does not have a predetermined function. This includes the state in which the power supply to the device itself has stopped (power failure state). The abnormal state detection unit 85 uses an ammeter, a thermometer, an anemometer, or the like (not shown) according to a device for detecting the abnormal state. In FIG. 9, these are collectively shown as one abnormal state detection unit 85. The shutter member 65 is provided in parallel with the open / close door 60 (see FIG. 7), and is wound upward when inactive. The abnormal state detection unit 85 and the shutter member 65 are electrically connected to the overall control unit 71. In addition to being output to the overall control unit 71, the detection result of the abnormal state detection unit 85 is transmitted to a management server (not shown) that manages the refrigerated warehouse 400 remotely. Yes. The controller device 70 including the abnormal state detection unit 85 is configured such that its function is maintained by a backup power supply unit 86 that operates in the event of a power failure in addition to the normal power supply.

  Here, in the fourth embodiment, as shown in FIG. 10, the abnormal state detection unit 85 (see FIG. 9) causes an abnormal state (at least one of the left ventilator 20, the right ventilator 40, and the open / close door 60 ( When the failure is detected, the opening 14 is blocked (closed) by the shutter member 65, and the wind shield portion 27b of the wind shield member 27 and the wind shield portion 47b of the wind shield member 47 are respectively It is configured to be pulled out downward. Further, when a power failure occurs, the shutter member 65 and the wind shielding members 27 and 47 are operated by power supply from the backup power supply unit 86 (see FIG. 9). Accordingly, when an abnormality (failure) occurs in at least one of the left ventilator 20, the right ventilator 40, or the open / close door 60, and it becomes impossible to form a double air curtain airflow in the opening 14. Even so, the opening 14 is blocked using the shutter member 65, and the opening 14 is surrounded by the wind shielding portions 27b and 47b drawn below the wind shielding members 27 and 47. ing. In addition, the other structure of the refrigerator warehouse 400 by 4th Embodiment is the same as that of the said 1st Embodiment.

(Effect of 4th Embodiment)
In the fourth embodiment, as described above, when the abnormal state detection unit 85 detects at least one abnormal state (failure) of the left ventricular blower 20 or the right ventricular blower 40, the shutter member 65 opens the opening 14. The wind shield portion 27b of the wind shield member 27 and the wind shield portion 47b of the wind shield member 47 are configured to be drawn downward. As a result, an abnormal state (failure) occurs in at least one of the left ventricular blower 20 or the right ventricular blower 40, and it is impossible to form a double air curtain airflow in the opening 14 portion. In addition, the opening 14 is blocked using a shutter member 65 serving as an alternative member of the opening / closing door 60, and the opening 14 is surrounded by the wind shielding portions 27b and 47b drawn below the wind shielding members 27 and 47. Can do. As a result, the thermal division (heat cutoff) state of the left chamber 11 and the right chamber 12 can be reliably maintained.

[Modification]
It should be thought that embodiment disclosed this time is an illustration and restrictive at no points. The scope of the present invention is shown not by the description of the above-described 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 to fourth embodiments, the “air curtain device” of the present invention is applied to the opening 14 portion of the partition wall 13 that divides the refrigerated warehouses 100 to 400 into the left chamber 11 and the right chamber 12. The present invention is not limited to this. For example, the “air curtain device” of the present invention can be installed in the double air curtain airflow installed at the entrance and exit of the inside and outside of the refrigerator in the refrigerated warehouse, and the double installed at the entrance and exit of the indoor and outdoor in the store facility. It may be adopted as a means for reliably obtaining the heat-blocking effect in the air curtain airflow or the double air curtain airflow inside and outside the refrigerator in the refrigerator car that can be opened and closed by the open / close door.

  Moreover, in the said 3rd Embodiment, although the wind-shielding member 27 (47) was comprised so that the wind-shielding part 27b (47b) might be pulled out vertically downward from the main-body part 27a (47a), this invention is limited to this. Absent. For example, as exemplified in the second embodiment, the main body portion 27a is disposed below the Y1 side end portion 21c and the Y2 side end portion 21d of the outlet 20b of the left ventricular blower portion 20 on the inner side. Thus, the wind shielding member 27 may be configured to be drawn while being inclined obliquely outward and then drawn vertically downward.

  Moreover, in the said 1st-4th embodiment, although the wind-shielding member 25 (26, 27, 45, 46, 47) was provided in the both sides of the Y1 side and Y2 side of the opening 14, this invention is restricted to this. Absent. For example, when the opening 14 is provided at the end of the partition wall 13 in the Y-axis direction (position where the partition wall 13 is abutted against the wall 10b extending in the X-axis direction of the refrigerator compartment 10), You may comprise so that the single wind-shielding member 25 (26, 27) may be provided in the opposite side (Y1 side in FIG. 3) from 10b.

  Moreover, in the said 1st-4th embodiment, although this invention was applied with respect to the refrigerator compartment 10 by which the single opening 14 was provided in the partition wall 13, this invention is not limited to this. For example, when a plurality of openings 14 are provided in the partition wall 13, the “air curtain device” of the present invention may be provided for each opening 14.

  In the third embodiment, the proximity sensors 83 and 84 are embedded in the floor surfaces 11a and 12a. However, the present invention is not limited to this. For example, a “human sensor” made of an infrared sensor or the like may be provided on the ceiling of the refrigerator compartment 10 (the left chamber 11 and the right chamber 12), or a “monitoring camera” may be provided. The “human sensor” and “surveillance camera” are examples of the “approach state detection unit” in the claims.

10 Refrigerated room 11 Left room (first area)
12 Right ventricle (second area)
13 Partition Wall 14 Opening 14a One-side end 14b Other-side end 15 Upper edge 20 Left ventricular blower (first blower)
21a, 21b, 41a, 41b Lower end portion 21c, 41c End portion (end portion of air outlet)
25, 26, 27, 45, 46, 47 Wind-shielding member 25a, 26a, 45a, 46a Upper end portion 26b, 46b Inclined portion 26c, 46c Lower end portion 26d, 46d Side portion 26e, 46e Outer side surface 30 Left ventricular cooling unit 40 Right ventricular blower (second blower)
27b, 47b Wind-shielding part 50 Right ventricular cooling section 60 Opening / closing door 65 Shutter member (opening blocking member at abnormal time)
70 Controller equipment 83, 84 Approach sensor (approach state detector)
85 Abnormal state detection unit 86 Backup power supply unit 100, 200, 300, 400 Refrigerated warehouse P1 Airflow (first air curtain airflow)
P2 airflow (second air curtain airflow)
P3 Airflow (part of the first air curtain airflow)
P4 airflow (part of the second air curtain airflow)
Q space S1, S2 Gap T1, T2 Temperature

Claims (8)

With respect to the opening that is provided in a part of the partition wall that separates the first area and the second area that are disposed adjacent to each other and that connects the first area and the second area, on the first area side of the opening. A first air blowing section for generating a first air curtain airflow;
A second air blowing unit for generating a second air curtain airflow on the second region side of the opening;
A wind shielding member that suppresses at least one air in the first region or the second region from entering a gap between the partition wall and at least one of the first air curtain airflow or the second air curtain airflow. And an air curtain device. The first air blower and the second air blower are installed so as to extend from one end along the upper edge of the opening in the partition wall to the other end.
The wind-shielding member has the first air curtain airflow or the position from the position corresponding to the vicinity of the one end and the vicinity of the other end of at least one of the first air blowing part or the second air blowing part. The air curtain device according to claim 1, wherein the air curtain device extends toward at least one of the second air curtain airflows and extends downward.   The wind-shielding member has a lower inner side than an end of the air outlet that blows out the first air curtain airflow of the first air blower, or an end of the air outlet that blows out the second air curtain airflow of the second air blower. The air curtain device according to claim 2, further comprising an upper end portion disposed on at least one of a lower side and an inner side. The windshield member includes an inclined portion extending obliquely downward from the upper end portion toward the side of the opening, and a side portion extending downward from the lower end portion of the inclined portion,
The air flow of at least one of the first air curtain airflow and the second air curtain airflow is configured to flow down along an outer surface of the inclined portion and the side portion. The air curtain device described in 1. The opening is configured to be opened and closed by an opening / closing door,
The wind-shielding member is configured such that the wind-shielding portion can be rolled up and pulled out downward,
The windshield member winds the windshield portion upward based on the opening being closed by the door, and the windshield portion is opened based on the opening being opened by the door. The air curtain device according to claim 1, wherein the air curtain device is configured to be drawn downward. Further comprising an approach state detection unit for detecting an approach state of an operator to the opening;
Based on the detection result of the approaching state detection unit, before the operator passes through the opening, the first air blowing unit and the second air blowing unit are operated and the wind shielding portion of the wind shielding member is downward. The air curtain device according to claim 5, wherein the air curtain device is configured to be pulled out by the air curtain. An abnormal state detection unit for detecting an abnormality in at least one of the first air blowing unit or the second air blowing unit;
An abnormal-time opening blocking member configured to block the opening in a state opened by the opening and closing door; and
The wind-shielding member is configured such that the wind-shielding portion can be rolled up and pulled out downward,
When at least one abnormality of the first air blowing unit or the second air blowing unit is detected by the abnormal state detection unit, the opening is blocked by the abnormal time opening blocking member and the wind shielding member is blocked. The air curtain device according to claim 1, wherein the air portion is configured to be drawn downward.   A refrigerated warehouse comprising the air curtain device according to any one of claims 1 to 7.

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