JP2007085571A - Equipment structure for keeping low temperature and shutting off outside air in wholesale market of fresh food - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an equipment structure for keeping low temperature and shutting off outside air in a wholesale market of fresh food capable of cooling a high-traffic large-size space 1, in particular in summer, efficiently keeping an internal temperature of the space 1, preventing degradation of fresh foods such as vegetables and fruits in the wholesale market caused by temperature rise, performing environment improvement to keep quality and freshness of the fresh foods, and saving energy. <P>SOLUTION: A vinyl accordion curtain 2 is mounted at least at a doorway of the large-size space 1, a curtain box 4 is mounted, a number of air conditioners 5 respectively having at least a suction duct, a cooler and a swing nozzle 5a are installed in the space 1, heat detectors are mounted on the swing nozzles 5a, and the heat detectors are connected with swing control portions for controlling swinging positions of the swing nozzles 5a. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention cools a space such as a large-scale wholesale market where many people, trucks, forklifts, and the like enter and exit, and the low temperature in the wholesale market for fresh foods devised so that the room temperature of the space hardly changes. It relates to the equipment structure for holding and shutting off the outside air.

  Conventionally, in the wholesale market for fresh foods, many people and vehicles come and go, and trucks are unloaded from the production area, prepared, and then loaded into the trucks of the purchasing wholesalers. ing. In that case, it is a reality that forklifts etc. come and go in the wholesale market, and for example, surrounding the internal sales floor with a thermal insulation panel such as a refrigerated warehouse is not adopted for work efficiency, the surroundings of the internal sales floor are It was common to be free and nothing. For this reason, it is impossible to manage fresh foods at low temperatures in the wholesale market, and even if fresh foods such as fruits and vegetables that have been transported and cooled in the wholesale market by a refrigerated vehicle are received, it takes several hours to 12 hours. It will be left at room temperature over time. As a result, in summer, the outside air temperature exceeds 30 ° C., and the temperature of vegetables, fruits, etc. rises, and these are exposed to high temperatures, resulting in significant deterioration. In particular, leaves such as lettuce and cabbage lose their freshness in a short time due to a rapid temperature rise. Furthermore, since the vegetables brought in from other than the refrigerator car and the refrigerator are placed under the roof and warmed by sunlight, the vegetables are sometimes brought into the interior, which causes a problem in terms of quality control.

  As a system for air-conditioning a large space such as a factory, there is JP-A-10-288392. This includes an air conditioner having a suction port, a heat exchanger, and a blower, and an air outlet that can change the direction of the air blown from the nozzle by a swinging means connected to the air conditioner. The nozzle is about 2 m to 4 m. It is a large space air conditioning system that realizes energy saving by arranging it at a height and blowing the wind from the nozzle in a substantially horizontal direction over a wide range.

However, Japanese Patent Laid-Open No. 10-288392 can improve the comfort and reduce the air conditioning energy without significantly lowering the room temperature, but there are many people, trucks, forklifts, etc. as in the present invention. In a large-scale space in the wholesale market for fresh foods coming in and out, the quality control of fresh foods cannot be sufficiently performed, and it cannot be installed as a large-scale air conditioning system in the wholesale market. Accordingly, Japanese Patent Laid-Open No. 10-288392 has no idea for a facility structure for maintaining a low temperature and shutting off the outside air in the wholesale market for fresh food.
Japanese Patent Laid-Open No. 10-288392

  The present invention cools a space such as a large wholesale market where many people, trucks, forklifts and the like go in and out especially in the summer, and the internal temperature of the space is efficiently maintained, so that fresh foods of vegetables and fruits in the wholesale market Providing a facility structure for maintaining the low temperature and shutting off the outside air in the wholesale market for fresh foods that can prevent deterioration due to temperature rise, improve the environment to maintain the quality and freshness of fresh foods, and save energy The purpose is to do.

  The present invention has been made to solve the above-described problems. That is, a vinyl accordion curtain for blocking outside is installed at least at the entrance / exit of a large space where many people and vehicles enter and exit, and a curtain storage box. In the space, a large number of air conditioners having at least a suction tug, a cooler, and a swing nozzle are arranged, and the heat sensor is attached to the swing nozzle and the swing position of the swing nozzle is set. The structure is connected to a swing control unit to be controlled. Moreover, it is good to attach a vinyl slit curtain along with a vinyl accordion curtain, and to arrange | position the swing nozzle of an air conditioner in the height of about 2-4m. Furthermore, using a thermopile of two-point projection with a visible light laser as a heat detector, and a function to set the position detected by the heat detector to be the center position of the swing angle of the swing nozzle and heat detection at a predetermined time interval It is preferable to use a function that operates the air conditioner in the swing control unit of the air conditioner.

  By installing a vinyl accordion curtain (2) for shutting out externally and installing a curtain storage box (4) at least at the entrance / exit of the large-scale space (1) as in claim 1, it is possible to shut off from the outside. Therefore, it has become possible to control the temperature of fresh foods in the wholesale market, which has been difficult in the past, and even if the outdoor temperature in summer exceeds 30 ° C, the temperature rise of vegetables, fruits, etc. can be prevented. Quality control can be performed without impairing the freshness of leaves such as lettuce and cabbage. In the space (1), a large number of air conditioners (5) having at least a suction tag (51), an air conditioner (52), and a swing nozzle (5a) are arranged, and a heat detector is provided in the swing nozzle (5a). (6) By attaching and connecting the heat sensor (6) to a swing control unit for controlling the swing position of the swing nozzle (5a), the center of the swing angle is automatically set to that of the heat sensor (6). In order to enable centralized cooling by changing to the sensing position, brought in vegetables from other than refrigerator cars and refrigerators, especially those that have been warmed by sunlight while being cooled, are brought in by the air conditioner (5) in summer. The swivel nozzle (5a) swings within a specified range around the warm vegetables and directly blows the air, making it possible to get closer to the same temperature as the surrounding vegetables stored. As Vegetable shelf does not need to lower much the room temperature, it is possible to save energy toward it refers to effectively cool air.

  By attaching the vinyl slit curtain (3) along with the vinyl accordion curtain (2) as in claim 2, a large space such as a distribution center or a wholesale market is sealed and can be shielded from the outside air. Even if there are many people and vehicles such as trucks and forklifts, the entry of outside air can be kept to a minimum, and the state in which the internal temperature of the space is hardly changed is maintained. The low-temperature management of food products becomes possible, and quality control for ensuring the quality of fresh food products and ensuring safety and security is possible. In addition, the equipment structure can cope with improvement of the sales floor environment in the wholesale market.

  As shown in claim 3, a retractable rail (41) for retracting the vinyl accordion curtain (2) is arranged inside the curtain storage box (4), so that the vinyl can be used in periods other than cooling in the summer. The accordion curtain (2) is conventionally wound around a pillar or the like, but in the present invention, the vinyl accordion curtain (2) is stored inside the curtain storage box (4) and cannot be seen from the outside, so that the appearance is refreshed, and During storage, the vinyl accordion curtain (2) can be stored without dust or dust from the outside, and it is easy to put in and out.

  As shown in FIG. 4, by arranging the swing nozzle (5a) of the air conditioner (5) at a height of about 2 to 4 m, cold air is directly applied to the loaded cargo and shown in FIG. As the cold air stratification zone is formed, the necessary part of the large-scale space (1) is covered with cold air, the internal temperature can be maintained efficiently, and the cool air can be blown effectively from the swing nozzle (5a). By being able to be lowered, since the minimum air conditioner (5) is required, it is possible to save energy and to reduce the equipment cost.

  The heat detector (6) is a non-contact type temperature sensor as in claim 5, and by using a thermopile of two-point projection with a visible light laser, it can reliably detect a load such as warm vegetables above a predetermined temperature. Then, the cool air is blown directly down there, so that more efficient cooling is possible and energy saving is possible.

  The function for setting the position sensed by the heat sensor (6) as in claim 6 to be the center position of the swing angle of the swing nozzle (5a) and the heat sensor (6) are operated at predetermined time intervals. Since the function is provided in the swing control unit of the air conditioner (5), it is possible to perform the swing by concentrating on the temperature higher than the surroundings, so that the cold air blows down directly on the warm load above the predetermined temperature. Even if the temperature of the cargo is uniformly controlled below a predetermined temperature and the outdoor temperature in summer exceeds 30 ° C, the vegetable can be brought closer to the same temperature as the surrounding vegetables stored. Temperature rise of fruits and fruits can be prevented, and in particular, better quality control can be performed without impairing the freshness of leaves such as lettuce and cabbage.

  FIG. 1 is a diagram showing an embodiment of the present invention, which will be described. (1) is a large-scale space where fresh foods are stored, sericulture is performed, and a sales floor is secured. For example, in FIG. It is 58m long and 28m long. (2) is a transparent vinyl accordion curtain that is installed at the entrance of the space (1) to block the outside. As the vinyl accordion curtain (2), a manually openable or automatically openable curtain is used. It is good to use what connected the vinyl sheet of about 1 meter width so that going in and out becomes easy. (3) is a transparent vinyl slit curtain that is attached to the inside along with the vinyl accordion curtain (2), and is provided in a passage portion such as a forklift. The space (1) is surrounded by a non-breathable vinyl accordion curtain (2), a vinyl slit curtain (3), a heat insulation panel, an existing wall, etc., and is externally blocked. (4) is a curtain storage box provided near the pillar for storing the vinyl accordion curtain (2), and the interior of the curtain storage box (4) is for drawing in the vinyl accordion curtain (2). A rail (41) is arranged (see FIG. 2).

  (5) is a large number of air conditioners arranged to cool the cargo carried into the space (1). The air conditioner (5) includes a suction tagt (51), a cooler (52), a chamber (53), a suction filter (54), and a swing nozzle (5a) are at least (refer FIG. 3, FIG. 4). The swing nozzle (5a) is preferably arranged at a height of about 2 to 4 m, and the swing nozzle (5a) is connected to a swing control unit (not shown) of the air conditioner (5). Further, as the operation (function) of the swing nozzle (5a), the vertical swing angle (α) is 80 degrees as shown in FIG. 5A, and the horizontal direction as shown in FIG. 5B. The maximum swing angle (β) is 120 degrees, but the rotational direction of 360 degrees can be changed by changing the center of the swing angle. The swing angle (β) can be switched in four stages of 30 degrees, 60 degrees, 90 degrees, and 120 degrees, and can be set by a remote controller (hereinafter referred to as a remote controller). This remote control includes a swing operation off / on switch, center position left switch, center position right switch, swing speed (low, medium, high) setting switch, additional function switch, swing angle A switch such as a setting switch is provided. Other functions include a function for setting a position sensed by a heat sensor (6), which will be described later, to a center position of a swing angle of the swing nozzle (5a), and the heat sensor (6) at predetermined time intervals. The function to operate is connected to the swing control unit of the air conditioner (5) to obtain these functions. The function that the position detected by the heat sensor (6) comes to the center position of the swing angle of the swing nozzle (5a) is connected to the function of changing the center of the swing angle currently used by remote control operation. It will work easily. The temperature of the heat sensor (6) is measured so that the center of the swing angle can be switched every predetermined time, for example, every 30 minutes, and once detected, the heat sensor is turned off for 30 minutes, and after 30 minutes the heat sensor is turned off. It is preferable to connect the timer function so that (6) is turned on.

  (6) is a heat sensor attached to the upper part of the swing nozzle (5a) as shown in FIGS. 3 and 4, a non-contact temperature sensor as the heat sensor (6), and a visible light laser. It is preferable to use a two-point projection detector with a thermopile. For example, it is preferable to use a digital radiation temperature sensor, particularly a long distance type.

  Next, the case where the air conditioner (5) used by this invention is attached is demonstrated. A new ceiling as shown in Fig. 3 will be installed under the ceiling of the building using heat insulation panels. The height of the newly installed ceiling is determined in consideration so that the swing nozzle (5a) can be arranged at a height of about 2 to 4 m. At this time, the suction filter (54) is attached to the suction port of the suction tag (51), that is, the lower side surface of the suction tag (51) in FIG. 3, and the suction tag (51) in FIG. Install on the bottom edge. Alternatively, only the swing nozzle (5a) may be installed under the new ceiling, and other members may be installed on the new ceiling so that they are not visible. After that, before operating the air conditioner (5) used in the present invention, the swing angle (α) in the vertical direction of the swing nozzle (5a) is first set to 80 degrees and the swing angle (β) in the left-right direction is set beforehand by the remote controller. Set to 120 degrees. Further, the temperature is set so that the room temperature becomes 20 ° C. to 25 ° C., and the temperature detected by the heat detector (6) is set to 30 ° C. The operation time of the heat sensor (6) is intermittently operated. The interval is preferably 5 to 60 minutes, but is preferably set to 30 minutes. In addition, a function of changing the sensing position of the heat sensor (6) to the center of the swing angle is set in advance in the swing control unit of the air conditioner (5).

  Next, the operation of the present invention will be described. First, the vinyl accordion curtain (2) and the vinyl slit curtain (3) installed at the entrance / exit are closed to block the large-scale space (1) from the outside. At this time, a space (1) that is not affected by outside air as much as possible is obtained. Thereafter, when each air conditioner (5) is turned on, the cold air is blown obliquely downward while the swing nozzles (5a) swing left and right, and the cold air stratification zone as shown in FIG. It is formed further below the ceiling newly established below. For this reason, compared with the case where the whole space (1) is cooled, the present invention can cool the load carried into the space (1) much more effectively, and achieves energy saving. It becomes an air conditioning system.

  A case where a load of 30 degrees or more is carried into the space (1) cooled by the present invention will be described. First, when the cargo at the time when the cold car breaks down or when the warm load placed outside is brought into the space (1), the swing nozzle (5a) blows off the cool air obliquely downward while swinging left and right. At the same time, the thermal sensor (6) mounted on the swing nozzle (5a) also swings in the horizontal direction and emits a visible light laser as indicated by the dotted arrows in the diagrams of FIGS. A measurement is performed, if there is a location of 30 ° C. or higher, it is detected, a detection signal is output from the heat detector (6), and transmitted to the swing control unit of the air conditioner (5). A command is issued from the swing control unit, and the center of the swing angle of the swing nozzle (5a) is automatically changed to the sensing position of the heat detector (6). Then, the cold wind from the swing nozzle (5a) is applied from the left-right direction centering on the location of 30 degreeC or more. At this time, once the heat sensor (6) outputs, the temperature measurement is interrupted, and after 30 minutes, the heat sensor (6) resumes the temperature measurement. When the temperature measurement is resumed, if the temperature of the load is not lower than 30 ° C., it is detected by the heat sensor (6), and the center of the swing angle of the swing nozzle (5a) remains unchanged. On the other hand, if the temperature of the load is 30 ° C. or lower when temperature measurement is resumed, the center of the swing angle of the swing nozzle (5a) remains the same as described above, but the heat sensor (6) is newly added. In addition, by sensing a location of 30 ° C. or higher, the center of the swing angle of the swing nozzle (5a) is changed to the new location.

  As described above, in the present invention, a portion of 30 ° C. or more is detected by the heat sensor (6), and the cold air of the swing nozzle (5a) is accurately concentrated on the portion to maintain the vegetable freshness in summer. . In particular, the present invention enables quality control without impairing the freshness of leaves such as lettuce and cabbage. In addition, since it becomes 30 degreeC or more in the location where many people go in and out or the location where many people gather, it can respond not only to a load but to a person.

  The present invention can be used for a refrigerated warehouse, a greenhouse, a temperature-controlled room, etc., where people and vehicles go in and out, as well as a fresh food distribution center and a wholesale market. Further, in the winter season, the present invention can be used to prevent freezing of fresh food items in cold regions, cold temperature disturbances, and the like by switching the air conditioner (5) to heating.

It is a top view which shows the principal part of the space by which the outside air of this invention was interrupted | blocked. It is a top view which shows the principal part of the entrance / exit of this embodiment. It is explanatory drawing which shows the principal part of this embodiment. It is explanatory drawing which shows the principal part of the air conditioner of this embodiment. It is explanatory drawing which shows the swing state of the air conditioner of this embodiment.

Explanation of symbols

1 Space 2 Vinyl Accordion Curtain 3 Vinyl Slit Curtain 4 Curtain Storage Box
41 Pull-in rail 5 Air conditioner
5a Swing nozzle
51 Suction tug
52 Air conditioner 6 Heat sensor

Claims (6)

  A vinyl accordion curtain (2) for external shut-off and a curtain storage box (4) are installed at least at the entrance / exit of a large space (1) where fresh foods are stored, sewed, and a sales floor is secured. ) And a large number of air conditioners (5) having at least a suction tagt (51), an air conditioner (52), and a swing nozzle (5a) are arranged in the space (1), and the swing nozzle ( Wholesale market for fresh food, characterized in that the heat sensor (6) is attached to 5a) and the heat sensor (6) is connected to a swing control unit for controlling the swing position of the swing nozzle (5a). Equipment structure for maintaining low temperature and shutting off outside air.   The facility structure for maintaining low temperature and blocking outside air in the wholesale market for fresh food products according to claim 1, wherein a vinyl slit curtain (3) is attached to the vinyl accordion curtain (2).   The cold storage and the outside air shut-off in the wholesale market for fresh foods according to claim 1, wherein a pull-in rail (41) for pulling in the vinyl accordion curtain (2) is arranged inside the curtain storage box (4). Equipment structure.   The facility structure for maintaining low temperature and shutting off the outside air in the wholesale market for fresh food products according to claim 1, wherein the swing nozzle (5a) of the air conditioner (5) is disposed at a height of about 2 to 4 m.   The facility for maintaining low temperature and shutting off the outside air in the wholesale market for fresh food products according to claim 1, wherein the heat sensor (6) is a non-contact temperature sensor and uses a thermopile of two-point projection by a visible light laser. Construction. The function of setting the position detected by the heat sensor (6) to be the center position of the swing angle of the swing nozzle (5a) and the function of operating the heat sensor (6) at predetermined time intervals are the air conditioning. The equipment structure for maintaining low temperature and shutting off the outside air in the wholesale market for fresh food products according to claim 1, which is provided in the swing control section of the machine (5).