JP2006258356A - Air flow suppression device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device for suppressing a suction/exhaust air flow from an opening part of a partition wall in a space partitioned by the partition wall, for instance, an air flow suppression device for suppressing the suction/exhaust air flow from the opening part to a freezing chamber and a cooling chamber. <P>SOLUTION: Air C sucked from fans 6 on both side surfaces 4a of a casing 4 of this air flow suppression device 1 flows toward a belt conveyer 7 at the center of the air flow suppression device 1. The flows of the air collide with each other at the center of the air flow suppression device 1 by setting the volumes of the air sucked from the fans 6 on both the side surfaces 4a and an air flow d in a direction along the belt conveyer 7 is formed. The formed air flow d advances along the belt conveyer 7 and collides head-to-head with an air flow from the opening part 3 toward the inside of the freezing chamber, whereby the air flow toward the inside of the freezing chamber can be evenly suppressed throughout the whole opening part 3 of the freezing chamber. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention provides a device that suppresses the intake / exhaust flow from the opening of the partition in a space partitioned by a partition such as a wall, for example, the intake / exhaust flow from the opening to the freezing chamber or the cooling chamber. The present invention relates to an airflow suppressing device for suppressing airflow.

  Conventionally, in a freezing chamber or a cooling chamber, when an opening portion that is open to the outside is necessary for continuous loading and unloading of products on the belt conveyor, the air flow from the opening portion to the chamber A so-called air curtain system is generally used as a means for suppressing the above-described problem (see, for example, Patent Document 1). The air curtain method is a method of blocking airflow from the outside to the room by flowing air through the opening of the room.

In addition to the air curtain method, a method has been proposed in which a spare chamber is provided in front of or behind the aperture and the pressure in the reserve chamber is adjusted to the same pressure as the outside to suppress the air flow in the aperture. (For example, refer to Patent Document 2).
JP 2000-249382 A Japanese Patent Laid-Open No. 3-28683

  However, there are the following problems in the air curtain system that blocks airflow from the outside to the room by flowing air through the opening of the room.

  (1) Even when air is flowed in the vertical and horizontal directions within the aperture, pressure cannot be applied uniformly to the entire aperture. For example, the air curtain usually has an air flow from the upper side to the lower side in consideration of maintainability, but the air flow g of the air curtain is attenuated by the belt conveyor and weakens below the belt conveyor (FIG. 10). .

  (2) If there is a topping material or bread crumbs on the product surface, strong air cannot be used because the topping material or bread crumbs are blown away.

  (3) The air curtain airflow hits the product 8 on the belt conveyor, and an airflow h directed outside the room is generated (FIG. 11).

  In addition, in the method of suppressing the air flow in the opening by adjusting the pressure in the preparatory chamber by providing a preparatory chamber, the pressure in the preparatory chamber is the same as the outside of the room, and the airflow in the opening is macroscopically viewed. Suppress. However, it is difficult to pressurize the preliminary chamber uniformly with simple pressurization, and even in such a case, the inflow into the spare chamber due to diffusion of minute objects from the outside, for example, fine foreign matters and impurities, is suppressed. There was a problem that it was difficult.

  The present invention has been made in consideration of the above points, and an object of the present invention is to provide a device that suppresses the intake / exhaust flow from the opening of the partition part, such as a freezing chamber, a cooling chamber from the opening. An object of the present invention is to provide an airflow suppression device that suppresses intake / exhaust flow.

  The invention of claim 1 is the airflow suppression device installed in the opening portion of the partition portion, wherein the housing covers the opening portion and has an opening on the surface facing the partition portion; And a blower provided on the opposing surface.

  According to a second aspect of the present invention, the other opposing surface is substantially orthogonal to the partition portion.

  According to a third aspect of the present invention, there is provided a conveyance path that passes through the opening portion and the opening portion of the partition portion.

  According to a fourth aspect of the present invention, the air blowing section has a fan.

  In the invention of claim 5, the air blowing section can supply and exhaust air.

  According to a sixth aspect of the present invention, there is provided control means for controlling the rotation of the fan to supply and exhaust air.

  According to the configuration of claim 1, when air is blown into the housing from the air blowing portion provided on the opposite surface, the kinetic energy of the air is converted into pressure, and the atmospheric pressure in the housing is increased uniformly, thereby opening the holes. It becomes possible to blow air evenly over the entire surface of the part, and airflow from the opening part toward the opening part can be suppressed.

  Moreover, according to the structure of Claim 2, since the ventilation from the opposing ventilation part turns into the direction which cross | intersects with the direction which ties an opening part and an opening part, the atmospheric pressure in a housing | casing can be raised uniformly. Even if the wind speed is not increased more than necessary, the airflow from the opening to the opening can be suppressed.

  Moreover, according to the structure of Claim 3, it is not necessary to raise a wind speed more than necessary by blowing from the conveyance direction of the to-be-conveyed object sent along a conveyance path, and there exists a deposit etc. in a to-be-conveyed object Even in this case, scattering of the deposit can be prevented. In addition, even when wind strikes the object to be transported, there is little change in atmospheric pressure in the housing, and the effect of suppressing the airflow from the opening to the opening can be maintained.

  Moreover, according to the structure of Claim 4, it can blow with a fan.

  Moreover, according to the structure of Claim 5, by the air supply which blows in a housing | casing from a ventilation part, the atmospheric | air pressure in a housing | casing can be raised uniformly and the airflow which goes to an opening part from an opening part can be suppressed. On the other hand, the air pressure that blows out of the housing from the blower can uniformly reduce the air pressure in the housing, and when an air flow is generated from the opening toward the opening, the air pressure in the housing is The airflow from the opening to the opening can be suppressed. Thus, by adjusting the amount of the air supply according to the air flow from the opening to the opening and adjusting the amount of the exhaust according to the air flow from the opening to the opening, the air flow Can be suppressed.

  Further, according to the configuration of claim 6, since the rotation of the fan can be controlled to supply and exhaust air, the air pressure in the housing is uniformly increased by the air supplied from the air blowing portion into the housing, and the air is opened from the opening portion. The air flow toward the part can be suppressed. On the other hand, the air pressure that blows out of the housing from the blower can uniformly reduce the air pressure in the housing, and when an air flow is generated from the opening toward the opening, the air pressure in the housing is The airflow from the opening to the opening can be suppressed. Thus, by adjusting the amount of the air supply according to the air flow from the opening to the opening and adjusting the amount of the exhaust according to the air flow from the opening to the opening, the air flow Can be suppressed. Therefore, by driving the fan according to the airflow, the power consumption of the fan can be improved.

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

  FIG. 1 is a perspective view showing an overall configuration of an airflow suppression device 1 according to the present invention. Moreover, FIG. 2 is sectional drawing which shows the state which installed the said airflow suppression apparatus 1 in the opening part 3 of the partition wall 2 which is a partition part of a freezing chamber. In FIG. 2, the entire view of the freezing chamber is omitted, and the partition wall 2 and the opening portion 3 where the airflow is desired to be suppressed are mainly shown. The partition wall 2 partitions the space inside the freezing chamber and the outside space. FIG. 1A is a perspective view showing an overall configuration on the front side of the airflow suppression device 1, and FIG. 1B is a perspective view showing an overall configuration on the rear side of the airflow suppression device 1. The airflow suppression device 1 includes a substantially rectangular parallelepiped housing 4, the front side which is the partition wall 2 side of the housing 4 is opened, and an opening 5 is provided on the rear surface 4 b of the housing 4. The side wall 4a that is orthogonal to the partition wall 2 and the rear surface 4b of the housing 4 is provided with a blower 6a that communicates the inside and outside of the housing 4, and a fan 6 as a blower is attached to the blower 6a. It has been. The air blower 6a is an opening provided in the side surface 4a, and air supply / exhaust to the housing 4 is performed. As shown in FIG. 2, the airflow suppression device 1 is installed at a position where the opening 3 of the partition wall 2 of the freezing chamber is covered with the opening on the front side of the housing 4. The partition wall 2 is composed of a panel material with a heat insulating material. A belt conveyor 7 serving as a conveyance path is disposed between the opening 3 and the opening 5 of the partition wall 2 of the freezing chamber. The fan 6 in FIG. 2 is provided at an intermediate position between the upper and lower belts of the belt conveyor 7, and the fans 6 and 6 provided on the side surfaces 4a and 4a facing each other also face each other. Further, a control means (not shown) for controlling the fans 6 and 6 is provided, and the control means can control the rotation speed of the fans 6 and 6 and switching between forward and reverse rotation.

  Next, operation | movement of the airflow suppression apparatus 1 is demonstrated based on FIG. 3 and FIG. The configuration of the airflow suppression device 1 in FIGS. 3 and 4 is the same as that in FIGS. 1 and 2. 3 shows a case where an air flow a is generated from the opening 3 of the partition wall 2 of the freezing chamber toward the room, and FIG. 4 shows a case where an air flow b is generated from the freezing chamber to the outside. . In FIG. 3, the air c sucked from the fans 6 on both side surfaces 4 a of the casing 4 of the airflow suppression device 1 flows toward the belt conveyor 7 installed at the center of the airflow suppression device 1. By making the amount of air sucked from the fans 6 on both side surfaces 4a the same amount, the air c collides with the central portion of the airflow control device 1, forms an airflow d in the direction along the belt conveyor 7, and the air pressure in the housing 4 Rises. The airflow d travels along the belt conveyor 7 and can collide with the airflow a from the opening portion 3 toward the inside of the freezing chamber and the front and suppress the airflow a toward the inside of the freezing chamber. At this time, the air flow d can be uniformly formed over the entire surface of the belt conveyor 7, and the air flow a toward the inside of the freezing chamber can be suppressed evenly over the entire opening 3 of the freezing chamber. Moreover, since the flow rate of the airflow d in the direction along the belt conveyor 7 can be changed by adjusting the rotation speed of the fan 6 on both side surfaces 4a of the casing 4 of the airflow suppression device 1 by inverter control, the inside of the freezing chamber It is also possible to cope with fluctuations in the airflow a toward the air.

  In this way, by driving the fans 6 on both side surfaces 4a to increase the air pressure in the housing 4, the airflow toward the inside of the freezing chamber is suppressed, or a weak airflow flows out to the outside. By setting the state, the inflow of foreign matter and impurities from the outside into the freezing chamber can be suppressed. Preferably, the fan 6 is driven so that the pressure (atmospheric pressure) inside and outside the airflow suppression device 1 becomes the same pressure, that is, the air pressure in the housing 4 is increased by drive control of the fan 6, and this is generated. By keeping the weak airflow d facing the outside and the weak airflow a trying to enter the housing 4 from the outside collide in the vicinity of the opening 3 and keep a balanced state, It is possible to block the air flow a toward the inside of the.

  In the present embodiment, not only the air flow suppression device 1 and the external pressure (atmospheric pressure) are the same pressure, but also the air flow toward the inside of the freezing chamber at the opening 3 is actively suppressed, The effect of suppressing the inflow of foreign matter and impurities into the freezing chamber is greater than when the external pressure and the pressure in the airflow suppression device 1 are set to the same pressure. In addition, by suppressing the inflow of foreign matter and impurities into the freezing chamber, frost adhering to the frozen food in the freezing chamber can also be reduced, improving the quality of the frozen food, for example, the crunchiness of frozen food clothing A feeling can be maintained.

  Further, the air flow toward the inside of the freezing chamber is suppressed, preferably a weak air flow d that is generated by driving the fan 6 and is directed to the outside, and a weak air flow a that is about to enter the housing 4 from the outside. In the vicinity of the opening 3, it is possible to keep a balanced state by colliding with each other, or by causing a weak air flow to flow out to the outside, so that inflow of warm air into the freezing chamber is also suppressed. The indoor cooling effect is also improved.

  In the present embodiment, the air from the fan 6 disposed at the symmetrical position of the belt conveyor 7 hits the frozen food from the side of the frozen food on the belt conveyor 7. Generally, the surface area of the frozen food on the belt conveyor 7 is smaller on the side surface than on the upper surface. Therefore, when frozen food is flowing side by side on the belt conveyor 7, when air is applied from the side, the cross-sectional area where the air hits the frozen food is smaller than when air is applied from the top surface. The effect of air is reduced. In addition, even when air is applied from the same side, there is no need to concentrate and apply strong air to a limited area to block the airflow as in the conventional air shower system, and the airflow suppression device 1 Since air can be applied to a large area, the influence of air on frozen food can be suppressed. Suppressing the effect of air on frozen foods improves the quality of frozen foods.For example, if frozen foods are foods with clothes such as croquettes and mentakatsu, it prevents the crumbs from spreading and Improvement and scattering of clothes can suppress deterioration of quality due to dirty freezing room. In addition, when frozen foods are foods in trays such as gratin and doria, the effect of air on frozen foods is similarly reduced, so that scattering of topping materials such as cheese and corn can be suppressed, improving food quality. Can be planned.

  In FIG. 4, the air e in the airflow restraint device 1 is exhausted from the fans 6 on both side surfaces 4 a of the housing 4 of the airflow restraint device 1. The air flow from the belt conveyor 7 to the fans 6 on both side surfaces 4a is generated. Air flow f is formed in a direction along the belt conveyor 7 on the belt conveyor 7 located in the middle of both fans 6 by setting the same amount of air exhausted from the fans 6 on both side surfaces 4a. This air flow f is in the opposite direction to the air flow b going outward from the opening 3 of the freezing chamber, and the air flow f and the air flow b cancel each other, so that the air flow b can be suppressed. Further, if the rotational speed of the fan 6 on both side surfaces 4a of the casing 4 of the airflow suppression device 1 is adjusted by inverter control, the flow rate of the airflow f in the direction along the belt conveyor 7 can be changed, so that the inside of the freezing chamber It is also possible to cope with fluctuations in the air flow b.

  By suppressing the air flow toward the outside of the freezing chamber, it is possible to suppress the cool air in the freezing chamber from flowing out, so that the cooling effect in the freezing chamber can be improved.

  Thus, in the present embodiment, corresponding to claim 1, in the airflow suppression device 1 installed in the opening portion 3 of the partition wall 2 as the partition portion, the surface that covers the opening portion 3 and faces the partition wall 2 Since the housing 4 having the opening 5 on the rear surface 4b and the air blowers 6a and 6a provided on the side surfaces 4a and 4a which are the other opposing surfaces of the housing 4 are provided, the air blowers 6a and 6a When the air is blown into the body 4, the air pressure in the housing 4 is uniformly increased, and thus it is possible to blow the air uniformly over the entire surface of the opening 3, thereby suppressing the air flow from the opening 3 to the opening 5. be able to.

  In this way, in this embodiment, corresponding to claim 2, the side surfaces 4a, 4a, which are the other opposing surfaces, are substantially orthogonal to the partition wall 2, which is the partitioning portion. The air blows in a direction intersecting with the direction connecting the opening 3 and the opening 5 so that the air pressure in the housing 4 can be increased uniformly, and the opening can be made without increasing the wind speed more than necessary. The airflow from 3 toward the opening 5 can be suppressed.

  Further, in this embodiment, in correspondence with the third aspect, since the belt conveyor 7 serving as a conveyance path passing through the opening 3 and the opening 5 of the housing 4 is provided, the object to be fed on the belt conveyor 7 is provided. By blowing air from the direction intersecting the conveyance direction of the product that is the conveyed product, it is not necessary to increase the wind speed more than necessary, and even when there is an adhering material on the product, the adhering material can be prevented from scattering. In addition, even if the product being conveyed by the belt conveyor 7 is hit by wind, the pressure change in the housing 4 is small, and the effect of suppressing the airflow from the opening 3 to the opening 5 can be maintained.

  In this way, in the present embodiment, corresponding to the fourth aspect, since the blower 6a has the fan 6, the fan 6 can blow air into the housing 4.

  In this way, in this embodiment, the air blower 6a can supply and exhaust air in accordance with the fifth aspect, so that the air pressure in the housing 4 is made uniform by the air supplied from the air blower 6a into the housing 4. The air flow from the opening 3 to the opening 5 can be suppressed, and the air pressure in the housing 4 can be uniformly reduced by exhausting air from the blower 6a to the outside of the housing 4. When the air flow from the opening 5 toward the opening 3 is generated, the air pressure in the housing 4 is uniformly reduced by performing the exhaust, and the air flow from the opening 5 toward the opening 3 is suppressed. be able to. Thus, by adjusting the amount of the air supply according to the air flow from the opening 3 to the opening 5, and adjusting the amount of the exhaust according to the air flow from the opening 5 to the opening 3, The generation of these airflows can be suppressed.

  Further, in this embodiment, in correspondence with the sixth aspect of the present invention, since the control means for controlling the rotation of the fan 6 to supply and exhaust air is provided, air supply from the air blowing portion 6a into the housing 4 allows The air pressure in the housing 4 can be increased uniformly to suppress the air flow from the opening 3 to the opening 5, while the exhaust from the blower 6 a to the outside of the housing 4 causes the inside of the housing 4. When the air flow from the opening 5 toward the opening 3 is generated, the exhaust is exhausted to uniformly reduce the pressure in the housing 4 so that the opening 5 can be opened. The airflow toward the part 3 can be suppressed. Thus, by adjusting the amount of the air supply according to the air flow from the opening 3 to the opening 5, and adjusting the amount of the exhaust according to the air flow from the opening 5 to the opening 3, The generation of these airflows can be suppressed. Therefore, by driving the fan 6 according to the airflow, the efficiency of power consumption of the fan 6 can be improved.

  Further, the control means can adjust the atmospheric pressure in the housing 4 by controlling the rotational speed of the fan 6 and the like in response to a change in atmospheric pressure outside the housing 4.

  FIG. 5 shows an airflow suppression device 11 as a second embodiment according to the present invention. Also in this case, the entire freezing chamber is omitted, and only the partition wall 2 and the opening 3 where the airflow is desired to be suppressed are shown. The apparatus configuration and the installation method on the partition wall 2 of the freezing chamber are the same as in the case of the first embodiment, except that the air blowing part 6a provided with the fan 6 is provided on the side surface 4a of the casing 4 of the airflow suppressing device 11 at two locations. It is the same. The air blower 6a provided with the fan 6 is provided at a position corresponding to each of the upper and lower belt side surfaces 4a of the belt conveyor 7.

  Next, operation | movement of the airflow suppression apparatus 11 is demonstrated based on FIG. FIG. 6 (a) shows a case where an air flow a is generated from the outside of the freezing chamber to the room through the opening 3 of the partition wall 2, and FIG. 6 (b) shows the outside of the freezing room from the room. The case where the airflow b is generated toward is shown.

  In FIG. 6A, the air c sucked from the fans 6 on both side surfaces 4 a of the casing 4 of the airflow suppression device 11 flows toward the belt conveyor 7 installed at the center of the airflow suppression device 11. By making the air sucked from the fans 6 on both side surfaces 4a into the same amount, the air c collides with the central portion of the airflow control device 11 to form an airflow d along the length direction of the belt conveyor 7. The air flow d travels along the belt conveyor 7 and can collide from the front with the air flow a from the opening 3 to the inside of the freezing chamber and the air flow a toward the inside of the freezing chamber. At this time, the air flow d can be uniformly formed over the entire surface of the belt conveyor 7, and the air flow a toward the inside of the freezing chamber can be suppressed evenly over the entire opening 3 of the freezing chamber. In the present embodiment, the air blowing portions 6a are provided at the positions corresponding to the side surfaces 4a of the upper and lower belts of the belt conveyor 7, so that the openings 3 are routed at the positions corresponding to the upper and lower belts of the belt conveyor 7. Thus, it is also possible to individually suppress the airflow a toward the room.

  In FIG. 6B, the air e in the airflow suppression device 11 is exhausted from the fans 6 on both side surfaces 4 a of the casing 4 of the airflow suppression device 11, so that the airflow suppression device 11 has a belt conveyor 7. Airflow to the fans 6 on both side surfaces 4a is generated. Air flow f is formed in a direction along the belt conveyor 7 on the belt conveyor 7 located in the middle of both fans 6 by setting the same amount of air exhausted from the fans 6 on both side surfaces 4a. This air flow f is in the opposite direction to the air flow b going outward from the opening 3 of the freezing chamber, and the air flow f and the air flow b cancel each other, so that the air flow b can be suppressed. In this embodiment, the fans 6 are provided at the positions corresponding to the side surfaces 4a of the upper and lower belts of the belt conveyor 7, so that the respective positions corresponding to the upper and lower belts of the belt conveyor 7 can be changed from the room to the outside of the freezing room. It is also possible to individually suppress the air flow b toward the.

  As described above, also in the present embodiment, in the airflow suppression device 11 installed in the opening 3 of the partition wall 2 that is the partition, the opening 4 is opened on the rear surface 4b that covers the opening 3 and faces the partition wall 2. 5, and air blowers 6 a, 6 a provided on the side surfaces 4 a, 4 a which are other opposing surfaces of the housing 4, corresponding to each claim, the same as in the first embodiment. Has an effect and effect.

  FIG. 7 shows an airflow suppression device 12 as a third embodiment according to the present invention. Also in this case, the entire freezing chamber is omitted, and only the partition wall 2 and the opening 3 where the airflow is desired to be suppressed are shown. The apparatus configuration and the installation method on the partition wall 2 of the freezing chamber are the same as in the case of the first embodiment, except that the air blowing section 6a provided with the fan 6 is provided on the side surface 4a of the casing 4 of the airflow suppression device 12 on the left and right sides. It is the same. The air blower 6 a provided with the fan 6 is provided at a position corresponding to the middle of the upper and lower belts of the belt conveyor 7.

  Also in this example, the principle obtained by forming the airflows d and f in the direction along the belt conveyor 7 and suppressing the airflows a and b in the opening 3 of the freezing chamber, and the effect obtained by suppressing the airflow, Although it is the same as the case of Example 1, the stronger air currents a and b in the opening part 3 of the freezing chamber can be obtained by arranging the air blowing part 6a provided with the fan 6 on each side 4a. It becomes possible to control.

  As described above, also in the present embodiment, in the airflow suppression device 12 installed in the opening portion 3 of the partition wall 2 that is the partition portion, the opening portion 3 is covered with the opening portion 3 on the rear surface 4b that covers the opening portion 3 and faces the partition wall 2. 5 and the air blowers 6a, 6a provided on the side surfaces 4a, 4a, which are the other opposing surfaces of the housing 4, are the same as the above embodiments corresponding to each claim. Has an effect and effect.

  FIG. 8 shows an embodiment 4 in which the airflow suppression device 1 and the airflow suppression device 11 according to the present invention are installed in a spiral freezer 14. In the present embodiment, the airflow suppression device 1 described in the first embodiment and the airflow suppression device 11 described in the second embodiment are installed. The selection of the airflow suppression device is arbitrary depending on the strength of the airflow of the opening 3 to be suppressed and the space available for the installation of the airflow suppression device. As described in the first and second embodiments, the airflow suppressing device 1 and the airflow suppressing device 11 can suppress the airflows a and b in the opening 3 of the spiral freezer 14.

  The air flow toward the inside of the spiral freezer 14 is suppressed. Preferably, a weak air flow directed to the outside generated by driving the fan 6 and a weak air flow entering the housing 4 from the outside are opened. In the vicinity of the portion 3, it is possible to suppress the inflow of foreign matter and impurities from the outside into the spiral freezer 14 by maintaining a balanced state by colliding or by setting a state in which a weak airflow flows out to the outside. . By suppressing the inflow of foreign matter and impurities into the spiral freezer 14, frost adhering to the frozen food in the spiral freezer 14 can be reduced, improving the quality of the frozen food, for example, the clothing of the frozen food A crisp feeling can be maintained.

  Further, the air flow toward the inside of the spiral freezer 14 is suppressed, preferably, a weak air flow directed to the outside generated by driving the fan 6 and a weak air flow to enter the housing 4 from the outside. By maintaining a balanced state in the vicinity of the opening 3 or by causing a weak airflow to flow outside, inflow of warm air into the spiral freezer 14 is also suppressed. The cooling effect in the spiral freezer 14 is also improved.

  FIG. 9 shows a fifth embodiment of the present invention. FIG. 9A is a perspective view showing an overall configuration on the front side of the airflow suppression device 13, and FIG. 9B is a perspective view showing an overall configuration on the rear side of the airflow suppression device 13. The front side of the airflow suppression device 13 is open, and the opening 5 is provided on the rear surface of the airflow suppression device 13 as in the case of the first embodiment. In the present embodiment, a U-shaped piping portion 21 is provided across one side surface 4a, the upper portion 4c, and the other side surface 4a of the housing 4, and both end sides of the U-shaped piping portion 21 are connected to both side surfaces 4a, 4a, It communicates with the air blowing parts 6a, 6a provided in 4a. The air blowing means is composed of a U-shaped piping portion 21 and one fan 22 provided at the center thereof. The operation principle and effect when the airflow suppression device 13 of this embodiment is installed in the opening 3 of the freezing chamber are the same as those of the first embodiment described above. The air blower 6a on both side surfaces 4a is connected to one fan 22, and the distance from the fan 22 is made equal so that the amount of air from the air blower 6a is more reliably blown to the both side surfaces 4a and 4a. The parts 6a and 6a can be made equal.

  In addition, in embodiment mentioned above, although suppression of the airflow of the opening part 3 of a freezing chamber was described, this invention is not restricted to this, It is by partition walls, such as a cooling chamber, a heating chamber, a working room, and a living space. In the partitioned space, it is possible to suppress the intake / exhaust flow from the opening portion of the partition wall.

  In the above-described embodiment, the conveyance path is a belt conveyor. However, the conveyance path is not limited to the belt conveyor, and can be applied to a net conveyor, conveyance by a robot arm, conveyance by a lift, and the like. Further, even in the case where there is no conveyance path, the present invention can be applied to the opening portion of the partition wall in the space partitioned by the partition wall. Further, in the embodiment, the air blowing unit is provided on the side surface of the housing and the air is blown from the side. However, the air blowing units may be provided on the upper surface and the lower surface of the housing to blow air from above and below.

It is a perspective view which shows Example 1 of this invention, Fig.1 (a) shows the front side of an airflow suppression apparatus, FIG.1 (b) shows the back side of an airflow suppression apparatus. FIG. 2 (a) is a top view, FIG. 2 (b) is a side sectional view, and FIG. 2 (c) is a rear view. FIG. 3A is a horizontal cross-sectional view, and FIG. 3B is a side cross-sectional view. FIG. 4A is a horizontal cross-sectional view and FIG. 4B is a side cross-sectional view illustrating the operation (exhaust state) of the airflow suppression device. Embodiment 2 of the present invention is shown, FIG. 5 (a) is a top view, and FIG. 5 (b) is a side sectional view. FIG. 6 is a side cross-sectional view illustrating the operation of the airflow suppression device, in which FIG. 6 (a) shows an intake state and FIG. 6 (b) shows an exhaust state. Embodiment 3 of the present invention is shown, in which FIG. 7 (a) is a top view and FIG. 7 (b) is a side sectional view. It is side surface sectional drawing which shows Example 4 of this invention. It is a perspective view which shows Example 5 of this invention, Fig.9 (a) shows the front side of an airflow suppression apparatus, FIG.9 (b) shows the back side of an airflow suppression apparatus. It is the schematic which shows a prior art. It is the schematic which shows a prior art, and shows the state which has a product on a belt conveyor.

Explanation of symbols

1, 11, 12, 13 Airflow suppression device 2 Partition wall (partition)
3 Opening 4 Housing
4a Side (other facing side)
4b Rear surface (surface facing the partition)
5 Opening 6 Fan (Blowing means)
6a Air blower 7 Belt conveyor (conveyance path)

Claims (6)

In the airflow suppression device installed in the opening portion of the partition portion, the housing is provided on a housing that covers the opening portion and has an opening on the surface facing the partition portion, and on the other facing surface of the housing. An airflow suppression device comprising a blower. The airflow suppression device according to claim 1, wherein the other facing surface is substantially orthogonal to the partition portion. The airflow suppression device according to claim 1, further comprising a conveyance path that passes through the opening and the opening of the partition. The airflow suppression device according to any one of claims 1 to 3, wherein the air blowing section includes a fan. The airflow suppression device according to any one of claims 1 to 3, wherein the air blowing unit can supply and exhaust air. The airflow suppression device according to claim 4, further comprising a control unit that controls rotation of the fan to supply and exhaust air.

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