JP2017166725A - Air curtain system and refrigeration warehouse - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air curtain system which inhibits outer air having high humidity from entering into a cold room when an article-carry-in-and-out door is opened or closed while inhibiting an article storage space in the cold room from becoming small (narrowing).SOLUTION: An air curtain system 100 in a refrigeration warehouse 100a includes a carry-in-and-out door 11 for articles 1 and is installed in a cold room 10 for refrigerating the articles 1. The air curtain system 100 includes: a cold room outside air curtain device 210 which is disposed near the carry-in-and-out door 11 and used to form outer airflow P1; and a desiccant dehumidifier 310 for dehumidifying air suctioned by the cold room outside air curtain device 210.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an air curtain system installed in a refrigerating room for refrigerating articles and a refrigerating warehouse including a refrigerating room for refrigerating articles.

  2. Description of the Related Art Conventionally, a refrigerated warehouse having a refrigeration room for refrigeration of articles is known (see, for example, Patent Document 1).

  Patent Document 1 discloses a refrigerated warehouse including a refrigeration room including a heat exchanger and an opening / closing mechanism (a door for loading and unloading articles). The refrigerated warehouse described in Patent Document 1 includes a front chamber at a position inside the refrigerated warehouse facing the opening / closing mechanism. Moreover, the refrigerator compartment is connected with the external space of the refrigerator warehouse through the front chamber. This refrigerated warehouse is configured to introduce outside air into the front chamber and dehumidify the outside air in the front chamber. The refrigerated warehouse is configured to supply the outside air dehumidified (preliminary dehumidification) in the front chamber to the inside of the refrigerated warehouse. Thereby, when the open / close mechanism is opened / closed, outside air with high humidity is prevented from entering the inside of the refrigerator compartment, and frost formation on the heat exchanger that refrigerates the refrigerator compartment is suppressed.

JP 2012-72981 A

  However, in the refrigerated warehouse described in Patent Document 1, it is necessary to provide a front chamber for dehumidifying outside air inside the refrigerated warehouse. For this reason, the space in the refrigerator compartment becomes smaller (narrower) by the space of the front room. As a result, there is a problem that the storage space for articles in the refrigerated room becomes small (narrow).

  The present invention has been made to solve the above-described problems, and one object of the present invention is to prevent the storage space of articles in the refrigerator compartment from becoming small (narrow) while keeping the articles from entering. It is an object to provide an air curtain system and a refrigerated warehouse capable of suppressing the outside air having high humidity from entering the inside of the refrigeration chamber when the door for unloading is opened and closed.

  In order to achieve the above object, an air curtain system according to a first aspect of the present invention is an air curtain system including an entry / exit door for an article and installed in a refrigerating room for refrigeration of an article. An air curtain device that is disposed in the vicinity of the unloading door and that forms a cold room airflow, and a dehumidifying device that dehumidifies the air sucked into the air curtain device.

  In the air curtain system according to the first aspect of the present invention, as described above, the air curtain device that is disposed in the vicinity of the loading / unloading door and forms the air flow in the refrigerator compartment, and the air that is sucked into the air curtain device. A dehumidifying device for dehumidifying is provided. Thereby, the dehumidified air can be supplied to the vicinity of the loading / unloading door. As a result, since it is not necessary to provide a front chamber for dehumidification, it is possible to prevent outside air having a high humidity when the door for opening and closing the article is opened and closed while suppressing the storage space for the article in the refrigerated room from becoming small (narrow). Can be prevented from entering the inside of the refrigerator compartment.

  In the air curtain system according to the first aspect, preferably, the air curtain device is disposed outside the refrigerating room and forms an air flow outside the refrigerating room, and is disposed inside the refrigerating room and generates the air flow inside the refrigerating room. The dehumidifying device is disposed outside the refrigerating chamber. With this configuration, in the boundary region between the outside of the refrigerator compartment and the refrigerator compartment, the outside of the refrigerator compartment and the inside of the refrigerator compartment are separated by the airflow outside the refrigerator compartment from the air curtain device and the airflow from the refrigerator interior air curtain device. It can be blocked by air (airflow walls) in the boundary region. As a result, a dehumidified space can be formed inside the boundary area between the outside of the refrigerating room and the refrigerating room, so that high humidity air flows from the outside of the refrigerating room into the refrigerating room even when the loading / unloading door is opened. Can be suppressed. Moreover, since the heat transfer between the outside of the refrigerator compartment and the refrigerator compartment can be mutually blocked, the temperature in the refrigerator compartment can be maintained efficiently.

  In this case, preferably, a pair of the refrigerated outdoor air curtain device and the refrigerated indoor air curtain device are provided so as to sandwich the loading / unloading door, and the refrigerated outdoor air curtain device and the refrigerated indoor air curtain device are respectively refrigerated. A dehumidification region is formed in a region between the outdoor air curtain device and the refrigerated indoor air curtain device, and an air flow outside the refrigeration room and an air flow in the refrigeration room are formed. According to this configuration, the air flow outside the refrigerator room and the air flow inside the refrigerator room can be formed in a well-balanced manner outside the refrigerator room and in the refrigerator room. Therefore, the dehumidifying area (dehumidified space) is formed in the boundary area between the outside of the refrigerator room and the refrigerator room. ) Can be reliably formed.

  In the configuration in which the air curtain device includes the refrigerated outdoor air curtain device and the refrigerated indoor air curtain device, preferably, the dehumidifying device is disposed in the vicinity of the refrigerated outdoor air curtain device. If comprised in this way, unlike the case where a dehumidifier is not arrange | positioned in the vicinity of the air curtain apparatus outside a refrigerator compartment, an air curtain system can be comprised compactly (small scale).

  In the configuration in which the air curtain device includes a refrigerated outdoor air curtain device and a refrigerated indoor air curtain device, preferably, when the loading / unloading door is closed, the refrigerated indoor air curtain device stops its operation. And only the refrigerated outdoor air curtain device is configured to operate. With this configuration, dehumidified air is flowing in the vicinity of the loading / unloading door. Therefore, in order to suppress condensation on the loading / unloading door when the loading / unloading door is closed, dew condensation prevention Therefore, it is possible to eliminate the necessity of providing a heater for suppressing condensation on the door for loading and unloading.

  In the air curtain system according to the first aspect, preferably, the dehumidifying device is a desiccant dehumidifier including an adsorbent that adsorbs moisture, and the air curtain device sucks air dehumidified by the desiccant dehumidifier. It is configured. If comprised in this way, using a desiccant dehumidifier, the dehumidified air can be easily blown down to the floor surface in the vicinity of the loading / unloading door.

  In the air curtain system according to the first aspect, preferably, the dehumidifying device is a heat exchanger, and the air curtain device is configured to suck air dehumidified by the heat exchanger. If comprised in this way, the dehumidified air can be easily blown down to the floor surface in the vicinity of the loading / unloading door using the heat exchanger. Further, the air that is sucked into the air curtain device can be dehumidified and cooled by the heat exchanger. Thereby, since the sensible heat load which penetrate | invades into a refrigerator compartment can be reduced, it can suppress that the power consumption of the cooling device (refrigerator) which cools a refrigerator compartment increases.

  A refrigerated warehouse according to a second aspect of the present invention includes an article loading / unloading door, and is disposed in the vicinity of the refrigeration room for refrigeration of the article and the loading / unloading door, and air for forming a refrigeration room airflow. A curtain device and a dehumidifying device for dehumidifying the air sucked into the air curtain device are provided.

  In the refrigerated warehouse according to the second aspect of the present invention, as described above, the air curtain device that is disposed in the vicinity of the loading / unloading door and forms the air flow in the refrigerator compartment, and the air sucked into the air curtain device is dehumidified. And a dehumidifying device. Thereby, the dehumidified air can be supplied to the vicinity of the loading / unloading door. As a result, when the dehumidifier is placed outside the refrigerator room or in a position that does not affect the storage of the article, such as near the ceiling in the refrigerator room, the article storage space in the refrigerator room is suppressed from becoming small (narrow) It is possible to prevent the outside air having high humidity from entering the inside of the refrigeration chamber when the door for loading and unloading is opened and closed.

  In the refrigerated warehouse according to the second aspect, preferably, the air curtain device includes an air curtain device outside the refrigerator room that is arranged outside the refrigerator room and forms an air flow outside the refrigerator room, and the dehumidifying device is arranged outside the refrigerator room. . If comprised in this way, in the boundary area | region of the refrigerator compartment outside and a refrigerator compartment, the refrigerator compartment air flow from the refrigerator outdoor air curtain apparatus will interrupt | block the refrigerator compartment outside and a refrigerator compartment by air (airflow wall) in this boundary area. be able to. As a result, a dehumidified space can be formed inside the boundary area between the outside of the refrigerating room and the refrigerating room, so that high humidity air flows from the outside of the refrigerating room into the refrigerating room even when the loading / unloading door is opened. Can be suppressed. Moreover, since the heat transfer between the outside of the refrigerator compartment and the refrigerator compartment can be mutually blocked, the temperature in the refrigerator compartment can be maintained efficiently.

  According to the present invention, as described above, while keeping the storage space for articles in the refrigeration room small (narrow), outside air with high humidity is placed in the refrigeration room when the article door is opened and closed. It is possible to provide an air curtain system and a refrigerated warehouse capable of suppressing intrusion.

It is the figure which showed the structure of the refrigerated warehouse by 1st Embodiment of this invention. It is the block diagram which showed the control structure of the refrigerated warehouse in 1st Embodiment of this invention. It is the figure which showed the state by which the door for entrance / exit in the refrigerated warehouse by 1st Embodiment of this invention was closed. It is the figure which showed the structure of the refrigerator warehouse by 2nd Embodiment of this invention. It is the block diagram which showed the control structure of the refrigerator warehouse in 2nd 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. 1-3, the structure of the refrigerated warehouse 100a by 1st Embodiment of this invention is demonstrated.

(Configuration of refrigerated warehouse and air curtain system)
As shown in FIG. 1, the refrigerated warehouse 100a is a refrigerated warehouse for storing articles (commodities) in a state where the internal space of the refrigerator compartment 10 is maintained at a predetermined temperature. The refrigerated warehouse 100 a includes a refrigerated chamber 10 for refrigeration of the articles 1. An air curtain system 100 is installed in the refrigerator compartment 10. The air curtain system 100 includes an air curtain device 20, a dehumidifying device 30, and a cooling device 40.

(Structure of the refrigerator compartment)
The refrigerator compartment 10 has, for example, a rectangular parallelepiped internal space. The refrigerator compartment 10 includes an entrance / exit door 11. For example, one loading / unloading door 11 is provided. The loading / unloading door 11 is configured to be openable and closable. That is, the article 1 is carried into the refrigerator compartment 10 from the outside with the loading / unloading door 11 opened. Further, the article 1 is configured to be carried out from the inside of the refrigerator compartment 10 to the outside while the loading / unloading door 11 is opened.

(Configuration of air curtain device)
The air curtain device 20 is arranged in the vicinity of the loading / unloading door 11 and is configured to form a cold room airflow that is blown down to the floor surface. The air curtain device 20 is disposed adjacent to the loading / unloading door 11. The air curtain device 20 is provided at a height position higher than the center height position of the refrigerator compartment 10 (at an upper position of the refrigerator compartment 10).

  The air curtain device 20 includes a cold room outdoor air curtain device 210 and a cold room indoor air curtain device 220. A pair of the refrigerator outdoor air curtain device 210 and the refrigerator indoor air curtain device 220 is provided so as to sandwich the loading / unloading door 11. The refrigerated outdoor air curtain device 210 and the refrigerated indoor air curtain device 220 are arranged at a height position that is separated from the floor by the same distance. Here, for example, the same number of the refrigerated outdoor air curtain device 210 and the refrigerated indoor air curtain device 220 are arranged. In other words, the refrigerated outdoor air curtain device 210 and the refrigerated indoor air curtain device 220 are generally arranged in a line-symmetric relationship with respect to a vertical line passing through the loading / unloading door 11.

  The refrigerated room outside air curtain device 210 is disposed outside the refrigerated room 10. The refrigerated outdoor air curtain device 210 includes a suction port 211 for sucking air. The refrigerated outdoor air curtain device 210 includes an air outlet 212 that blows out (discharges) air. The refrigerated outdoor air curtain device 210 is configured to blow out air from the air outlet 212 in the opposite direction (X1 direction) to the loading / unloading door 11. The refrigerated outdoor air curtain device 210 is configured to blow air from the air outlet 212 from above toward the floor surface. Thereby, the air curtain apparatus 210 outside a refrigerator compartment is comprised so that the air flow P1 outside a refrigerator compartment (henceforth external air flow P1) blown down to the floor surface outside the refrigerator compartment 10 may be formed.

  The refrigerating room air curtain device 220 is disposed inside the refrigerating room 10. The refrigerated indoor air curtain device 220 includes a suction port 221 for sucking air. The refrigerated indoor air curtain device 220 includes an air outlet 222 that blows out (discharges) air. The refrigerated indoor air curtain device 220 is configured to blow out air from the air outlet 222 in the opposite direction (X direction) to the loading / unloading door 11. The refrigerated indoor air curtain device 220 is configured to blow air from the air outlet 222 from above to the floor surface. Thereby, the refrigerating room air curtain device 220 is configured to form a refrigerating room air flow P2 (hereinafter referred to as an internal air flow P2) that is blown down to the floor surface in the refrigerating room 10. A cold air circulation flow G (hereinafter referred to as a circulation flow G) including the internal air flow P2 is formed in the refrigerator compartment 10 by the operation of the refrigerator air curtain device 220 and the cooling device 40 described later.

(Configuration of dehumidifier)
The dehumidifying device 30 is configured to dehumidify air sucked into the outdoor air curtain device 210. In addition, the dehumidifying device 30 is disposed outside the refrigerator compartment 10.

  In the configuration example of the first embodiment, the dehumidifying device 30 is disposed in the vicinity of the outdoor air curtain device 210 in the refrigerator compartment. Further, the dehumidifying device 30 is disposed adjacent to the refrigerated outdoor air curtain device 210.

  In the configuration example of the first embodiment, the dehumidifying device 30 is, for example, a desiccant dehumidifier 310 including an adsorbent that adsorbs moisture. The air dehumidified by the desiccant dehumidifier 310 is sucked by the refrigerated outdoor air curtain device 210. The desiccant dehumidifier 310 includes a desiccant rotor 311 that supports an adsorbent such as zeolite or silica gel. The desiccant dehumidifier 310 is configured to allow air precooled by a cooling coil (not shown) to flow into the desiccant rotor 311. The moisture of the air that has flowed into the desiccant rotor 311 is adsorbed by the desiccant rotor 311 when passing through the desiccant rotor 311. In this way, the air whose humidity has been reduced is sucked into the suction port 211 of the outdoor air curtain device 210 in the refrigerator compartment. The desiccant dehumidifier 310 is an example of the “dehumidifier” in the claims.

  The desiccant dehumidifier 310 includes a heater (not shown). The desiccant dehumidifier 310 is configured to cause the air heated by the heater to flow into the desiccant rotor 311 and then release the air to the outside of the desiccant dehumidifier 310. As a result, moisture can be desorbed from the desiccant rotor 311 that has adsorbed moisture, and the desiccant rotor 311 can be put into a usable state again.

(Configuration of cooling device)
A cooling device 40 is provided inside the refrigerator compartment 10. The cooling device 40 is disposed at the position of the refrigerator compartment 10 on the side opposite to the loading / unloading door 11. The cooling device 40 is configured to cool the air in the refrigerator compartment 10 and maintain the set temperature. The cooling device 40 has a blowing function. The cooling device 40 includes a suction port 41 that sucks air in the refrigerator compartment 10. The cooling device 40 includes an air outlet 42 that blows out (discharges) air into the refrigerator compartment 10.

(About air flow (airflow))
Outside the refrigerator compartment 10, air is blown out in a direction inclined at a predetermined angle with respect to the vertical direction from the outlet 212 of the outdoor air curtain device 210. When the air flow (air flow P1) reaches the floor surface, the air flow is branched in two directions, ie, the direction of the loading / unloading door 11 (X2 direction) and the direction opposite to the loading / unloading door 11 (X1 direction). The Air traveling in the direction opposite to the loading / unloading door 11 (X1 direction) diffuses while traveling along the floor surface. On the other hand, the air traveling in the direction of the loading / unloading door 11 (X2 direction) travels along the floor surface, and then rises in the boundary region B and is mixed with the airflow from the blowout port 212 again. As a result, a vortex Q1 is generated in the boundary region B.

  On the other hand, air is blown out from the air outlet 222 of the refrigerating room air curtain device 220 in a direction inclined at a predetermined angle with respect to the vertical direction inside the refrigerating room 10. When the air flow (air flow P2) reaches the floor surface, it is branched into two directions, ie, the direction of the loading / unloading door 11 (X1 direction) and the direction opposite to the loading / unloading door 11 (X2 direction). The Air traveling in the opposite direction (X2 direction) to the loading / unloading door 11 travels along the floor surface. Thereafter, the air reaches the inner wall 101 of the refrigerating chamber 10, rises along the inner wall 101, and then is blown by the cooling device 40 toward the air curtain device 220 in the refrigerating chamber. Thereby, the circulation flow G is formed inside the refrigerator compartment 10. On the other hand, the air traveling in the direction of the loading / unloading door 11 (X1 direction) travels along the floor surface, rises in the boundary region B, and is mixed with the cold air from the blowout port 222 again. As a result, a vortex flow Q2 smaller than the circulation flow G is generated in the boundary region B.

  The refrigerated outdoor air curtain device 210 and the refrigerated indoor air curtain device 220 are configured so that the dehumidifying region D is formed in the region between the refrigerated outdoor air curtain device 210 and the refrigerated indoor air curtain device 220, respectively. It is comprised so that the internal airflow P2 may be formed. Specifically, in the boundary region B, whilst eddy currents Q1 and Q2 are generated, the external airflow P1 outside the refrigerator compartment 10 and the internal airflow P2 inside the refrigerator compartment 10 are mutually in the vertical direction. Proceed to increase the spacing (translate in a divergent manner). Thereby, it is prevented that the outer airflow P1 and the inner airflow P2 merge to form one descending airflow in the boundary region B. As a result, the vortex flows Q1 and Q2 can be generated in a state where the external air flow P1 and the internal air flow P2 are separated. For this reason, the humidity of the air in the boundary region B between the outside and the inside of the refrigerator compartment 10 can be kept low even when the loading / unloading door 11 is opened. Further, by forming the external air flow P1 and the internal air flow P2 as described above, the outside and inside of the refrigerator compartment 10 can be connected even when the outside and inside of the refrigerator compartment 10 are not blocked by the loading / unloading door 11. It can be thermally shut off. That is, in the direction perpendicular to the loading / unloading door 11 (X direction), heat transfer between the outside and the inside of the refrigerator compartment 10 (in this case, heat transfer from the outside to the inside) is blocked.

(Other configurations)
As shown in FIG. 2, the refrigerated warehouse 100a includes a controller 50 that controls various operations of the refrigerated warehouse 100a. For example, the controller 50 is disposed outside the refrigerated warehouse 100a. The controller 50 includes an overall control unit 51, a refrigerator outdoor air curtain device controller 52, a dehumidifying device controller 53, a refrigerator indoor air curtain device controller 54, and a cooling device controller 55. Each control part (51-55) contains CPU which operate | moves based on a predetermined control program.

  The overall control unit 51 is configured to control overall operation control of the refrigerated warehouse 100a. The refrigerated outdoor air curtain device controller 52 is configured to control the operation of the refrigerated outdoor air curtain device 210. The dehumidifier control unit 53 is configured to control the operation of the dehumidifier 30. The refrigerated indoor air curtain device controller 54 is configured to control the operation of the refrigerated indoor air curtain device 220. When the entrance / exit door 11 is closed (see FIG. 3) under the control of the outdoor air curtain device controller 52 and the indoor air curtain device controller 54, the indoor air curtain device 220 operates as follows. Only the outdoor outdoor air curtain device 210 is operated. In addition, the cooling device control unit 55 is configured to control the operation of the cooling device 40. As shown in FIG. 1, a temperature sensor 81 that detects the temperature of the internal space of the refrigerator compartment 10 is provided inside the refrigerator compartment 10. The temperature sensor 81 is electrically connected to the overall control unit 51 (see FIG. 2). Based on the internal temperature of the refrigerator compartment 10 detected by the temperature sensor 81, the overall control unit 51 performs a predetermined calculation process. Then, the overall control unit 51 controls the cooling in the refrigerating chamber 10 to each of the refrigerating room air curtain device control unit 54 (see FIG. 2) and the cooling device control unit 55 (see FIG. 2) based on the calculation processing result. Give instructions on.

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

  In 1st Embodiment, as mentioned above, it is arrange | positioned in the vicinity of the door 11 for carrying in and out, and it is attracted | sucked by the air curtain apparatus 20 and the air curtain apparatus 20 for forming the refrigerator airflow blown down to the floor surface. A desiccant dehumidifier 310 for dehumidifying the air is provided. Thereby, the dehumidified air can be blown down to the floor surface in the vicinity of the loading / unloading door 11. As a result, there is no need to provide a front chamber for dehumidification, so that the storage space for the articles 1 in the refrigerator compartment 10 can be kept small (narrow) and the loading / unloading door 11 for the articles 1 can be opened and closed. It is possible to suppress the outside air having a high humidity from entering the refrigerator compartment 10.

  Moreover, in 1st Embodiment, it arrange | positions in the refrigerating room 10, and it arrange | positions in the refrigerating room 10 outside the refrigerating room 10, and it arrange | positions in the refrigerating room 10 and forms the external air flow apparatus P1 which forms the external airflow P1 blown down to the floor surface outside the refrigerating room 10. An air curtain device 20 including a refrigerated indoor air curtain device 220 that forms an internal airflow P2 that is blown down to the floor in the chamber 10 is provided. In addition, a desiccant dehumidifier 310 is provided outside the refrigerator compartment 10. Thus, in the boundary region B between the outside of the refrigerating room 10 and the inside of the refrigerating room 10, both the external air flow P1 from the refrigerating room air curtain device 210 and the internal air flow P2 from the refrigerating room air curtain device 220 reach the floor surface. The outside of the refrigerating room 10 and the inside of the refrigerating room 10 can be shut off by air (airflow walls) in this boundary region B. As a result, a dehumidified space can be formed inside the boundary region B between the outside of the refrigerator compartment 10 and the inside of the refrigerator compartment 10, so that even when the loading / unloading door 11 is opened, It is possible to prevent air with high humidity from flowing into the refrigerator compartment 10 from the outside. Moreover, since the heat transfer between the outside of the refrigerator compartment 10 and the inside of the refrigerator compartment 10 can be mutually interrupted, the temperature in the refrigerator compartment 10 can be maintained efficiently.

  In the first embodiment, a pair of refrigerating room air curtain devices 210 and a refrigerating room air curtain device 220 are provided so as to sandwich the loading / unloading door 11. The refrigerated outdoor air curtain device 210 and the refrigerated indoor air are formed so as to form the external air flow P1 and the internal air flow P2 so as to form the dehumidifying region D in the region between the refrigerated outdoor air curtain device 210 and the refrigerated indoor air curtain device 220. Each of the curtain devices 220 is configured. Thereby, since the external air flow P1 and the internal air flow P2 can be formed with good balance in the outside of the refrigerator compartment 10 and the inside of the refrigerator compartment 10, the boundary region between the outside of the refrigerator compartment 10 and the inside of the refrigerator compartment 10 A dehumidified area D (dehumidified space) can be reliably formed in B.

  Moreover, in 1st Embodiment, the desiccant dehumidifier 310 is arrange | positioned in the vicinity of the refrigerated outdoor air curtain apparatus 210. FIG. Thereby, unlike the case where the desiccant dehumidifier 310 is not disposed in the vicinity of the refrigerated outdoor air curtain device 210, the air curtain system 100 can be configured to be compact (small scale).

  Moreover, in 1st Embodiment, when the door 11 for carrying in / out is closed, the operation | movement of the refrigerator air curtain apparatus 220 is stopped, and only the refrigerator outdoor air curtain apparatus 210 is operated. Thereby, since the dehumidified air flows in the vicinity of the loading / unloading door 11, in order to suppress the dew condensation on the loading / unloading door 11 when the loading / unloading door 11 is closed, it is for preventing condensation. Therefore, it is possible to eliminate the need to suppress the condensation of the door 11 for loading and unloading.

  In the first embodiment, the outdoor air curtain device 210 is configured to suck the air dehumidified by the desiccant dehumidifier 310. Thereby, using the desiccant dehumidifier 310, the dehumidified air can be easily blown down to the floor surface in the vicinity of the loading / unloading door 11.

[Second Embodiment]
Next, a second embodiment will be described with reference to FIGS. 4 and 5. In the second embodiment, unlike the first embodiment, a configuration example using a heat exchanger 320 in place of the desiccant dehumidifier 310 for dehumidification will be described. Moreover, about the structure similar to 1st Embodiment, while attaching | subjecting the same code | symbol as 1st Embodiment, description is abbreviate | omitted. The heat exchanger 320 is an example of the “dehumidifying device” in the claims.

  The freezer warehouse 200a in 2nd Embodiment of this invention is provided with the heat exchanger 320 (it shows with a broken line), as shown in FIG. Specifically, the heat exchanger 320 is built in the refrigerated outdoor air curtain device 410. That is, in the outdoor air curtain device 410, the outdoor air curtain device 210 according to the first embodiment further includes a heat exchanger 320.

  The refrigerated outdoor air curtain device 410 is configured to cool the air using the heat exchanger 320 and to dehumidify the air with the cooling. The refrigerated outdoor air curtain device 410 is configured to suck the air dehumidified by the heat exchanger 320. The outdoor air curtain device 410 is configured to blow air. Accordingly, the outdoor air curtain device 410 is configured to blow out dehumidified air.

  The outdoor air curtain device 410 is configured to be cooled by the heat exchanger 320 outside the cold room 10 and to blow out dehumidified air (cold air) obliquely downward from the air outlet 212. The heat exchanger 320 is configured such that the operation is controlled by the cooling device controller 55 (see FIG. 5). In addition, the other structure of 2nd Embodiment is the same as that of the said 1st Embodiment.

  In the second embodiment, the following effects can be obtained.

(Effect of 2nd Embodiment)
In the second embodiment, as described above, the humidity is reduced when the door 11 for loading / unloading the article 1 is opened / closed while suppressing the storage space for the article 1 in the refrigeration chamber from being reduced, as in the first embodiment. It is possible to suppress high outside air from entering the inside of the refrigerator compartment.

  In the second embodiment, the outdoor air curtain device 410 is configured to suck the air dehumidified by the heat exchanger 320. Thereby, the dehumidified air can be easily blown down to the floor surface in the vicinity of the loading / unloading door 11 using the heat exchanger 320. Further, the heat exchanger 320 can dehumidify the air sucked into the outdoor air curtain device 410 and can perform cooling. Thereby, since the sensible heat load which penetrate | invades into a refrigerator compartment can be reduced, it can suppress that the power consumption of the refrigerator unit (not shown) connected to the cooling device 40 increases. The remaining effects of the second embodiment are similar to those of the aforementioned first embodiment.

[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 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 and second embodiments, the configuration in which a pair of the outdoor air curtain device 210 (410) and the indoor air curtain device 220 is provided, but the present invention is not limited to this. In this invention, the structure which does not provide a pair of refrigerating room air curtain apparatus 210 (410) and refrigerating room air curtain apparatus 220 may be sufficient.

  Moreover, in the said 1st and 2nd embodiment, the refrigeration outdoor air curtain apparatus 210 (410) and the refrigeration indoor air curtain apparatus 220 are roughly with respect to the vertical line which passes along the door 11 for carrying in / out. Although an example in which the lines are symmetrically arranged is shown, the present invention is not limited to this. In the present invention, the refrigerated outdoor air curtain device 210 (410) and the refrigerated indoor air curtain device 220 are generally arranged in an asymmetric structure (line symmetric structure) with respect to a vertical line passing through the loading / unloading door 11. May be arranged).

  Moreover, although the said 1st and 2nd embodiment showed about the example which provides the separate refrigerating room air curtain apparatus 210 (410) and the refrigerating room air curtain apparatus 220, this invention is not limited to this. In the present invention, one air curtain device having the functions of the outdoor air curtain device 210 (410) and the cold room air curtain device 220 may be provided.

  Moreover, in the said 1st Embodiment, although the desiccant dehumidifier 310 was shown about the example arrange | positioned so that it may adjoin to the refrigeration outdoor air curtain apparatus 210, this invention is not limited to this. In the present invention, the desiccant dehumidifier 310 may be disposed separately from the refrigerated outdoor air curtain device 210.

  In the first and second embodiments, when the loading / unloading door 11 is closed, the operation of the refrigerating room air curtain device 220 is stopped and only the refrigerating room air curtain device 210 (410) is operated. However, the present invention is not limited to this. In the present invention, when the entrance / exit door 11 is closed, both the refrigerating room air curtain device 220 and the refrigerating room air curtain device 210 (410) may be operated.

  In the first embodiment, the dehumidifier 30 is the desiccant dehumidifier 310, and in the second embodiment, the dehumidifier 30 is the heat exchanger 320. However, the present invention is not limited to this. Absent. In the present invention, the dehumidifying device 30 may be a dehumidifying device other than the desiccant dehumidifier 310 or the heat exchanger 320.

  Moreover, in the said 1st and 2nd embodiment, the internal airflow P2 is blown down to the floor surface inside the refrigerator compartment 10, and the air curtain apparatus 210 outside the refrigerator compartment 10 which blows down the external airflow P1 to the floor surface outside the refrigerator compartment 10 Although the refrigeration room air curtain device 220 is provided in the air curtain device 20, the present invention is not limited to this. In the present invention, for example, for an air curtain device of a horizontal blowing type that blows an air flow in the horizontal direction from both sides of the door 11 for loading and unloading, the air sucked into the air curtain device is dehumidified. A dehumidifying device may be provided.

DESCRIPTION OF SYMBOLS 1 Goods 10 Refrigerated room 11 Door for loading / unloading 20 Air curtain device 30 Dehumidifier 100 Air curtain system 100a, 200a Refrigerated warehouse 210, 410 Air curtain device outside refrigerator room 220 Air curtain device in refrigerator room 310 Desiccant dehumidifier 310 (dehumidifier)
320 Heat exchanger (dehumidifier)
D Dehumidification area P1 Air flow outside the refrigerator compartment (external air flow)
P2 Air flow in refrigerated room

Claims (9)

An air curtain system including a door for loading and unloading an article and installed in a cold room for refrigeration of the article,
An air curtain device arranged in the vicinity of the loading / unloading door to form a cold room air flow;
An air curtain system comprising: a dehumidifying device for dehumidifying air sucked into the air curtain device. The air curtain device
A refrigerated outdoor air curtain device arranged outside the refrigerated compartment and forming an air flow outside the refrigerated compartment;
A refrigerating room air curtain device disposed in the refrigerating room and forming a refrigerating room airflow;
The air curtain system according to claim 1, wherein the dehumidifying device is disposed outside the refrigerator compartment. A pair of the refrigerated outdoor air curtain device and the refrigerated indoor air curtain device are provided so as to sandwich the loading / unloading door,
The refrigerated outdoor air curtain device and the refrigerated indoor air curtain device are configured to form a dehumidification region in a region between the refrigerated outdoor air curtain device and the refrigerated indoor air curtain device, respectively. The air curtain system according to claim 2, wherein the air curtain system is configured to form.   4. The air curtain system according to claim 2, wherein the dehumidifying device is disposed in the vicinity of the refrigerated outdoor air curtain device. 5. If the loading / unloading door is closed,
The refrigerated indoor air curtain device is configured to stop operation,
The air curtain system according to any one of claims 2 to 4, wherein only the outdoor air curtain device of the refrigerator compartment is configured to operate. The dehumidifier is a desiccant dehumidifier including an adsorbent that adsorbs moisture,
The air curtain system according to claim 1, wherein the air curtain device is configured to suck air dehumidified by the desiccant dehumidifier. The dehumidifier is a heat exchanger,
The air curtain system according to claim 1, wherein the air curtain device is configured to suck air dehumidified by the heat exchanger. A refrigerating room for refrigerating the article, including a door for loading and unloading the article;
An air curtain device arranged in the vicinity of the loading / unloading door to form a cold room air flow;
A refrigerated warehouse comprising a dehumidifying device for dehumidifying the air sucked into the air curtain device. The air curtain device includes an air curtain device outside the refrigerator compartment that is disposed outside the refrigerator compartment and forms an air flow outside the refrigerator compartment,
The refrigeration warehouse according to claim 8, wherein the dehumidifying device is disposed outside the refrigeration room.

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