WO2020050228A1

WO2020050228A1 - Booth and spouting device

Info

Publication number: WO2020050228A1
Application number: PCT/JP2019/034480
Authority: WO
Inventors: 上田　晃; 克洋増田; 雅文山口
Original assignee: 日本スピンドル製造株式会社
Priority date: 2018-09-06
Filing date: 2019-09-02
Publication date: 2020-03-12
Also published as: TWI727418B; CN112639366B; EP3848646B1; CN112639366A; EP3848646A4; TW202010912A; US20210095874A1; KR20210053260A; JPWO2020050228A1; JP7494118B2; EP3848646A1

Abstract

The present invention addresses the problem of realizing a booth which can easily access an internal space without decreasing an environmental condition. In order to solve the above-described problem, the booth (10) comprises a spouting part (spouting device 120) that spouts air to an opening part (105) communicating with an internal space (S), wherein the spouting part forms a first airflow (external airflow 126) that suppresses disturbance from an external space from being introduced into the internal space and a second airflow (internal airflow 127) that suppresses the first airflow from being introduced into the internal space.

Description

Booth and spouting device

The present invention relates to a booth and an ejection device.

Booths are known for assembling electronic parts and precision parts, performing various operations such as experiments, and operating process equipment and precision machines. In such a booth, a partition member (a wall, a ceiling, or the like) separates the internal space from the external space and maintains environmental conditions such as temperature, humidity, and cleanliness.

JP 2014-169816 A

At the booth, it is necessary to have access to the interior space for workers to enter and exit, and to carry in and out of articles. When a structure such as a door, a sliding door, or a curtain is provided at an entrance, access becomes complicated and workability deteriorates. Therefore, it is conceivable that the entrance is a simple opening without such a structure. However, in this case, the connection with the external space becomes insufficient, and it becomes difficult to perform air conditioning control in the internal space, for example, temperature control or humidity control. In addition, dust may enter the internal space from the opening to lower the cleanliness of the internal space. As described above, when the entrance of the booth is a mere opening, various environmental conditions (temperature, humidity, cleanliness, etc.) are reduced.

One object of one embodiment of the present invention is to realize a booth that can easily access an internal space without lowering environmental conditions.

In order to solve the above problem, a booth according to one embodiment of the present invention includes an ejection unit that ejects air to an opening that communicates with an internal space partitioned from an external space, and the ejection unit is connected to the outside space from the external space. A first airflow that suppresses external disturbance from being introduced into the internal space, and a second airflow that suppresses the first airflow from being introduced into the internal space inside the first airflow. And a configuration for forming the airflow.

According to one embodiment of the present invention, a booth that can easily access the internal space can be realized without lowering environmental conditions.

It is a schematic structure figure showing the booth concerning Embodiment 1 of the present invention. FIG. 1 is a schematic vertical sectional view showing a booth according to a first embodiment of the present invention. It is a schematic structure figure showing the ejection device concerning Embodiment 1 of the present invention. FIG. 2 is a schematic horizontal sectional view showing the booth according to the first embodiment of the present invention. It is a horizontal section schematic diagram showing a booth concerning Embodiment 2 of the present invention. FIG. 9 is a schematic vertical sectional view showing a booth according to a third embodiment of the present invention. FIG. 14 is a schematic vertical sectional view showing a booth according to a fourth embodiment of the present invention. It is a vertical cross section schematic diagram showing a booth according to Embodiment 5 of the present invention. It is a front view of the booth concerning Embodiment 6 of the present invention. It is a front view of the booth concerning Embodiment 7 of the present invention. It is a front view of the booth concerning Embodiment 8 of the present invention. It is a front view of the booth concerning Embodiment 9 of the present invention. 9 is a result of a simulation regarding the temperature distribution of the booth of the present invention. 9 is a result of a simulation regarding the temperature distribution of the booth of the present invention. 9 is a result of a simulation regarding the temperature distribution of the booth of the present invention.

[Embodiment 1]
Hereinafter, an embodiment of the present invention will be described in detail.

(Overall configuration of booth)
FIG. 1 is a diagram showing a schematic configuration of a booth 10 according to the first embodiment. FIG. 2 is a diagram schematically illustrating a vertical cross section observed from the side of the booth 10. The booth 10 has an external space formed by a ceiling 101, two side walls 102, a front wall 103, and a rear wall 104, which are partition members assembled on a floor 90 (not included in the components of the booth 10). An internal space S is provided. The size of the internal space S is not limited to a specific value, but may be, for example, about 3 to 20 m in the depth direction, 3 to 20 m in the width direction, and about 2 to 5 m in the height direction.

開口 An opening 105 is provided in the vicinity of the center of a part of the front wall 103 to form an entrance to the internal space S. The size of the opening 105 is not limited to a specific value, but is, for example, about 1 to 3 m in the width direction smaller than the width of the internal space S and about 2 to 5 m in the height direction smaller than the height of the internal space S. can do.

The booth 10 includes an air conditioner (air conditioner) 150 outside the internal space S, and controls the air conditioning of the internal space S. The internal space S is an area for performing operations in an environment where the atmosphere is controlled by air conditioning, machine operations, and the like, such as assembling of electronic components and precision components, various operations such as experiments, operation of process devices and precision machines, and the like. . The air conditioning control is specifically temperature control in the first embodiment. However, the air conditioning control is not limited to only the temperature control, but may be, for example, humidity control or cleanliness control.

The partition members (the ceiling portion 101, the side wall portion 102, the front wall portion 103, and the rear wall portion 104) are used as booth wall materials or ceiling materials such as vinyl curtains, heat-insulating non-combustible panels, glass, acrylic plates, and metal plates. And may be made of any suitable known material. In addition, in order to maintain structural strength, it is preferable that the partition member is assembled using frames, columns, beams, and the like as appropriate.

The booth 10 is provided with an ejection device (ejection unit) 120 for ejecting air into the opening 105. As a specific mounting position of the jetting device 120, for example, the jetting device 120 can be mounted on a part of the front wall 103 which is an end of the opening 105. Further, a suction device (suction unit) 130 for sucking air is attached to a position facing the ejection device 120 (for example, a part of the front wall portion 103 serving as an edge of the opening 105). The ejection device 120 and the suction device 130 are arranged on the left and right of the opening 105 and outside the front wall 103 along a vertical line, respectively. In addition, the air ejection port of the ejection device 120 and the air suction port of the suction device 130 are arranged so as to face each other. The booth 10 according to the first embodiment includes one ejection device 120 and one suction device 130. However, a plurality of ejection devices 120 may be arranged along the edge of the opening 105 so as to be arranged side by side, so that the ejection device 120 may play the same role as a single large ejection device. The same applies to the suction device.

(Temperature control of internal space)
An inlet 111 for introducing temperature-controlled air into the interior space S of the booth 10 is provided on the bottom surface of the ceiling 101. Air controlled to a predetermined temperature is sent from the air conditioner 150 to the inlet 111 through a pipe 143 to the inlet. The introduction port 111 discharges a uniform airflow (downflow) in which the blowing direction is controlled downward to the internal space S. In FIG. 1, the introduction port 111 is depicted as two members that are divided into left and right, but this is merely an example, and may be configured by a single member or a plurality of two or more members. May be provided on substantially the entire surface of the device. The inlet 111 is attached to the rear wall 104 as illustrated in FIG. 1 and does not have to have a shape extending in the depth direction. For example, the inlet 111 may be suspended from the ceiling 101 or embedded in the ceiling 101. Or you may. Further, it is preferable that a filter or a mesh for removing dust or the like is provided in the inlet 111.

The air sent into the internal space S is drawn into the outlet 112 provided at the lower portion of the rear wall 104, and is collected by the air conditioner 150 through a pipe 144 to the outlet. Although the shape of the outlet 112 may be a horizontally long rectangle as shown in FIG. 1, another shape or an arbitrary number of holes can be appropriately used. Here, the pipe may specifically be a tubular member, a square tubular member, a duct, and the like, and the same applies to the following description.

As described above, the air whose temperature is controlled by the air conditioner 150 circulates, so that the internal space S of the booth 10 is controlled to a predetermined temperature. Although the wind speed of the airflow blown out from the inlet 111 is not limited to a specific value, it is preferable that the wind speed is as slow as 0.1 to 1 m / s. This is because if the wind speed is high, a part that is partially cooled by the airflow directly hitting the appliances and fixtures installed in the internal space S is formed, and there is a fear that the temperature distribution may be caused. In the present application, the wind speed of the airflow is defined by the wind speed just below the outlet such as an inlet or an outlet (an outlet wind speed).

Also, it is not preferable in terms of temperature control that external air directly flows into the internal space S. Therefore, the internal space S is maintained at a slightly positive pressure by the air conditioner 150. Therefore, the air slightly flows out of the internal space S through the opening 105 or the like (EA in FIG. 2). The air conditioner 150 takes in air from the outside air intake 151 and adjusts the temperature together with the air recovered from the internal space S to supplement the outflow air and further maintain the internal space S at a positive pressure. Provide the required air volume.

(Airflow control of opening)
Further, the characteristic airflow control in the opening 105 will be described with reference to FIGS. FIG. 3 is a schematic diagram illustrating the ejection device 120 according to the first embodiment. FIG. 4 is a diagram schematically illustrating a horizontal cross section of the booth 10.

空気 Temperature controlled air is supplied to the ejection device 120 through a pipe 141 from the air conditioner 150 to the ejection device. The ejection device 120 includes an outer ejection port 121 (first ejection port) and an inner ejection port 122 (second ejection port), each of which is vertically long and corresponds to the vertical length of the opening 105. . The outer outlet 121 and the inner outlet 122 are parallel to each other. The outer outlet 121 is provided on a side farther from the internal space S than the inner outlet 122. The length of the outer jet 121 and the inner jet 122 is not limited to a specific value, but may be, for example, 2 to 5 m. In addition, as described above, when the plurality of ejection devices 120 are configured to be arranged side by side along the edge of the opening 105, the length of the outer ejection port 121 and the inner ejection port 122 have a specific value. Although not limited to, it may be, for example, about 0.5 to 2 m.

(4) The outer outlet 121 blows the outer airflow 126 (first airflow) in a horizontal direction parallel to the plane formed by the opening 105 (parallel to the front wall 103). Here, the outer airflow 126 is a layered airflow covering the opening 105, that is, an air curtain. In addition, the inner outlet 122 blows out the inner airflow 127 (second airflow) in a horizontal direction parallel to the plane formed by the opening 105 (parallel to the front wall 103). Here, the inner airflow 127 is a layered airflow that covers the opening 105, and is also an air curtain. The direction of the outer airflow 126 and the direction of the inner airflow 127 are parallel and have the same direction.

The inner airflow 127 is a weaker airflow than the outer airflow 126. Here, the weaker airflow means that the wind speed is relatively small (slow). The preferred wind speed of the outer airflow 126 is between 4 and 8 m / s, and can typically be 5 m / s. The preferred wind speed of the inner airflow 127 is relatively lower than the wind speed of the outer airflow 126 and may be 3-6 m / s, typically 4 m / s. Further, by maintaining the internal pressure at a positive pressure, the wind speed can be reduced. In that case, preferred wind speeds may be 3-6 m / s for the outer airflow 126 and 2-4 m / s for the inner airflow 127. By reducing the wind speed, the turbulence of the air flow is reduced, and the effect of the present invention of suppressing the influence of disturbance on the internal space S can be further exhibited.
In any case, the wind velocities of the outer airflow 126 and the inner airflow 127 are not limited to the above ranges, and may have different values as appropriate. However, as described above, the outer airflow 126 needs to have a higher wind speed than the inner airflow 127.

More preferably, the wind speed of the inner airflow 127 is desirably higher than the wind speed of the airflow blown from the inlet 111 in the internal space S.

The suction device 130 plays a role of sucking air so as not to disturb that the outer airflow 126 and the inner airflow 127 each flow as a layered airflow. Preferably, the suction device 130 has two vertically long suction ports, each corresponding to the outer airflow 126 and the inner airflow 127. However, it may have one vertically long suction port that sucks in both the outer airflow 126 and the inner airflow 127. It is desirable that the length of the vertically long suction port is substantially the same as the length of the outer ejection port 121 or the inner ejection port 122 of the ejection device 120. The air sucked by the suction device 130 is sent to the air conditioner 150 through a pipe 142 to the suction device.

The wind speeds of the outer airflow 126 and the inner airflow 127 can be appropriately adjusted according to the distance between the ejection device 120 and the suction device 130. More specifically, the distance between the ejection device 120 and the suction device 130 includes a distance between the outer ejection port 121 (first ejection port) of the ejection device 120 and a suction port that sucks the outside airflow 126 of the suction device 130, and And a suction port for sucking the inside airflow 127 of the suction device 130. The preferred wind speed of the outer airflow 126 for the distance between the ejection device 120 and the suction device 130 is between 2.5 and 5.5 m / s per meter of distance between the ejection device 120 and the suction device 130, typically May be 3.3 m / s. The preferred wind speed of the inner airflow 127 for the distance between the ejection device 120 and the suction device 130 is 2-4 m / s per meter of the distance between the ejection device 120 and the suction device 130, typically 2.7 m. / S. Further, when the internal pressure is maintained at a positive pressure, the outer airflow 126 may be 2 to 4 m / s and the inner airflow 127 may be 1 to 3 m / s per 1 m of the distance between the ejection device 120 and the suction device 130. . By reducing the wind speed, the turbulence of the air flow is reduced, and the effect of the present invention of suppressing the influence of disturbance on the internal space S can be further exhibited.

(Effect in Embodiment 1)
With the above configuration, the following is realized in the booth 10 according to the first embodiment.

ため Since the opening 105 is provided in a part of the front wall 103, it is easy for an operator to enter and exit, and to carry in and out articles, and access to the internal space S is good. Therefore, the efficiency of various operations using the booth 10 is improved.

Generally, in a booth having such an opening, it is difficult to control the air conditioning of the internal space due to the inflow of outside air and the outflow of air in the internal space. For example, in the case of performing temperature control as air conditioning control, it is difficult to keep the internal space S at a predetermined uniform temperature due to inflow of outside air (an example of disturbance) whose temperature control is insufficient. In addition, the inflow of wind (an example of disturbance) into the internal space also disturbs the flow of air in the internal space. However, since the booth 10 is configured to form an air flow serving as an air curtain in the opening 105, the inflow of outside air and the outflow of air in the internal space are suppressed. In other words, it works in a direction of blocking the inside and outside.

In the booth 10, the outer airflow 126 (first airflow) and the inner airflow 127 (second airflow) are formed in the opening 105, and the inner airflow 127 is weaker than the outer airflow 126. . The significance of such a characteristic configuration will be described below.

The present inventors first studied a configuration in which a single-layer airflow (air curtain) is formed at the opening. Then, when the wind speed of the airflow was low, the effect of suppressing the inflow of outside air and the outflow of air in the internal space was poor, and the target temperature control in the internal space S could not be performed. More specifically, the target temperature control means that the temperature distribution in the internal space S can be controlled to be within ± 0.1 degrees of the target temperature value.

(4) Next, we tried to increase the wind speed of the airflow in order to enhance the effect of blocking the inside and outside. However, when the wind speed of the single-layer airflow was increased, the air in the internal space was drawn in and accelerated, so that the airflow entered the internal space. As a result, a portion having a high wind speed was partially formed in the internal space, and the target temperature control could not be performed in the internal space. This is because a portion where the wind speed is high is partially formed, and the temperature distribution in the internal space S is disturbed. Various wind velocities were studied, but the target internal temperature distribution could not be achieved with a single-layer airflow (air curtain).

Although the temperature distribution in the internal space S has been described here, the same applies to the humidity distribution.

Also, it was found that the adoption of a single-phase airflow did not prevent the incorporation of dust in a suitable manner. If the wind speed of the single-layer airflow is reduced, there is a possibility that prevention of dust from entering the internal space S due to the airflow does not work sufficiently. On the other hand, when the airflow of the single layer is increased, dust may be involved in the entry of the airflow into the internal space S, and as a result, the dust may be mixed into the internal space.

Therefore, the present inventors have thought of forming a two-layer airflow at the opening 105, an outer airflow 126 having a high wind speed and an inner airflow 127 which is weaker than the outer airflow 126, and have completed the present invention. Reached. The outer airflow 126 having a high wind speed plays a role in making the effect of blocking the inside and outside sufficient. That is, it plays a role of suppressing the influence of disturbance on the internal space S. On the other hand, the relatively weak inner airflow 127 plays a role in suppressing the outer airflow 126 having a high wind speed from entering the internal space S. With such a unique configuration and arrangement of the airflow, the booth 10 can achieve target temperature control and humidity control in the internal space S, and can appropriately prevent dust from entering the internal space. is there.

ブース Furthermore, the booth 10 is provided with a suction device 130 provided at the edge of the opening 105 so as to face the ejection device 120 and to suck air. With this configuration, the outer airflow 126 (first airflow) and the inner airflow 127 (second airflow) are also disturbed in the opening 105 at regions apart from the outer jet 121 and the inner jet 122, respectively. Is suppressed. Therefore, target temperature control and humidity control in the internal space S and prevention of dust from being mixed can be suitably realized.

In addition, by setting the directions of the outer airflow 126 (first airflow) and the inner airflow 127 (second airflow) to be horizontal, the ejection device 120 and the suction device 130 are vertically placed on the left and right of the opening 105. it can. Therefore, a booth including the ejection device 120 and the suction device 130 can be easily manufactured.

In the booth 10, the outer airflow 126 (first airflow) and the inner airflow 127 (second airflow) are formed by the air supplied from the air conditioner 150. By forming the outer airflow 126 and the inner airflow 127 with the air that has been air-conditioned by the air conditioner 150, a factor that disturbs the control of the internal space S is suppressed, and the target air-conditioning control in the internal space S is reliably realized. Become like

In the jetting device 120 according to the first embodiment used in the booth 10, the outer jet 121 (first jet) for forming the outer airflow 126 (first airflow) is weaker than the outer airflow 126. An inner outlet 122 (second outlet) for forming the inner airflow 127 (second airflow) is provided. In a booth having an opening, by applying the jetting device 120 of the present configuration, it is possible to achieve good temperature control of the internal space while having good access to the internal space.

[Embodiment 2]
Another embodiment of the present invention will be described below. For convenience of description, members having the same functions as those described in the above embodiment are denoted by the same reference numerals, and description thereof will not be repeated.

FIG. 5 is a diagram showing a schematic configuration of the booth 20 according to the second embodiment. FIG. 5A is a diagram schematically illustrating a horizontal cross section for illustrating a schematic configuration of the booth 20 according to the second embodiment. The booth 20, unlike the booth 10 according to the first embodiment, does not include the suction device 130 and the pipe 142 to the suction device. Also, unlike the booth 10, the ejection device 120 is provided on both the left and right edges of the opening 105. To each of the ejection devices 120, a pipe 141 to the ejection device for supplying air subjected to air-conditioning control (temperature control) from the air conditioner 150 is connected.

The left and right ejection devices 120 form two-layer airflows, each of which has an outer airflow 226 (first airflow) having a high wind speed and an inner airflow 227 (second airflow) weaker than the outer airflow 226. Therefore, the outer shapes of the left and right ejection devices 120 are mirror-symmetrical to each other. Note that the direction of each airflow is the horizontal direction.

The preferred wind speed of the outer airflow 226 is between 2 and 4 m / s, typically 3 m / s. The preferred wind speed of the inner airflow 227 is a wind speed relatively lower than the wind speed of the outer airflow 226 and may be 1-3 m / s, typically 2 m / s. In any case, the wind speeds of the outer airflow 226 and the inner airflow 227 are not limited to the above ranges, but may be different values as appropriate. However, as described above, the outer airflow 226 needs to have a higher wind speed than the inner airflow 227.

Further, the wind speed of the outer airflow 226 and the inner airflow 227 depends on the distance between each outer jet 121 (first jet) and each inner jet 122 (second jet) in the left and right jet devices 120. Can be adjusted appropriately. The preferred wind speed of the outer airflow 226 relative to the distance between the left and right outer jets 121 is 1-3 m / s per meter of distance between the left and right outer jets 121, and may typically be 2 m / s. The preferred wind speed of the inner airflow 227 relative to the distance between the left and right inner jets 122 is 0.5 to 2 m / s per meter of the distance between the left and right inner jets 122, typically 1.3 m / s. Can be

In the booth 20 according to the second embodiment, since the air is supplied from the left and right ejection devices 120, the wind speeds of the outer airflow 226 and the inner airflow 227 can be reduced as compared with the case where air is supplied from one side. Therefore, the turbulence of the air flow is reduced, and the effect of the present invention of suppressing the influence of the disturbance on the internal space S is further exhibited.

Other configurations are the same as those of the booth 10 according to the first embodiment. Therefore, also in the booth 20, the same effect as in the first embodiment can be obtained except for the effect of the suction device 130.

In addition, in the booth 20, since the outside airflow 226 and the inside airflow 227 are formed from the left and right with respect to the opening 105, each airflow (air curtain) easily covers the opening 105. Therefore, it is easy to increase the width of the opening 105. On the other hand, since airflows from the left and right meet near the center in the width direction of the opening 105, there is a fear that the airflow is likely to be disturbed. Therefore, the directions of the outer airflow 226 and the inner airflow 227 are substantially parallel to the plane formed by the opening 105 (substantially parallel to the front wall 103), but slightly outward, and the outer airflow 226 and the inner It is preferable to make it difficult for the airflow 227 to enter.

FIG. 5B is an explanatory diagram showing the angles θi1 and θi2 of the inner airflow 227 with respect to the plane P formed by the opening 105. The angles θi1 and θi2 of the left and right inner airflows 227 are not particularly limited, but are preferably 0 to 45 °. The lower limit is, for example, 1 ° or more, 3 ° or more, 5 ° or more, or 10 ° or more. The upper limit is, for example, 40 ° or less, 35 ° or less, or 30 ° or less. The angles θi1 and θi2 of the left and right inner airflows 227 may be the same or different.
Similarly, for the outer airflow 226, the angles θo1 and θo2 of the left and right outer airflows 226 are not particularly limited, but are preferably 0 to 45 °. The lower limit is, for example, 1 ° or more, 3 ° or more, 5 ° or more, or 10 ° or more. The upper limit is, for example, 40 ° or less, 35 ° or less, or 30 ° or less. The angles θo1 and θo2 of the left and right outer airflows 226 may be the same or different.
Further, the angle of the inner airflow 227 and the angle of the outer airflow 226 may be the same or different.
Note that the angles (θi1, θi2, θo1, θo2) may be variably controlled according to conditions such as the temperature and humidity of the internal space S and the external space. This makes it possible to better suppress the influence of disturbance on the internal space S even when, for example, the external environment changes. As a specific example, for example, when the temperature of the external space rises, the external airflow 226 and the internal airflow 227 are heated by radiant heat generated from the floor or the like, and the external airflow and the internal airflow easily enter the internal space S. In such a case, the influence of disturbance can be suppressed by making the angle more outward.

[Embodiment 3]
FIG. 6 is a diagram schematically showing a cross section in a vertical plane for illustrating a schematic configuration of the booth 30 according to the third embodiment. The booth 30, unlike the booth 10 according to the first embodiment, does not include the suction device 130 and the pipe 142 to the suction device. Further, unlike the booth 10, a horizontal ejection device 320 is provided at the upper edge of the opening 105. To the ejection device 320, a pipe 141 to the ejection device for supplying air subjected to air-conditioning control (temperature control) from the air conditioner 150 is connected.

The jet device 320 forms two layers of an airflow, an outer airflow 326 (first airflow) having a high wind speed and an inner airflow 327 (second airflow) weaker than the outer airflow 326. Note that the direction of each airflow is vertically downward.

Other configurations are the same as those of the booth 10 according to the first embodiment. Therefore, also in the booth 30, the same effect as in the first embodiment can be obtained except for the effect of the suction device 130.

In the booth 30, the outer airflow 326 and the inner airflow 327 are formed from above the opening 105. Therefore, the width of the opening 105 is less likely to be restricted in the width direction, and the width of the opening 105 can be easily increased. Further, a plurality of ejection devices 320 may be arranged side by side along the upper edge of the opening 105.

Similarly to the ejection device 120 according to the first embodiment, the ejection device 320 according to the third embodiment used in the booth 30 also has the outside ejection port (the first airflow) for forming the outside airflow 326 (first airflow). And an inner jet (second jet) for forming an inner airflow 327 (second airflow) weaker than the outer airflow 326. By applying the ejection device 320 of this configuration to a booth having an opening, it is possible to achieve good temperature control of the internal space while maintaining good access to the internal space.

[Embodiment 4]
FIG. 7 is a diagram schematically illustrating a cross section in a vertical plane for illustrating a schematic configuration of the booth 31 according to the fourth embodiment. The booth 31 according to the fourth embodiment is the same as the booth 30 according to the third embodiment, except that a suction device 330 arranged to face the ejection device 320 and a pipe to the suction device connected thereto are added. In the fourth embodiment, the suction device 330 is disposed below the opening 105. The suction device 330 can be arranged at a position higher than the floor surface 90. In this case, the construction of the booth becomes easy. Alternatively, the suction device can be arranged at a position lower than the floor surface 90. In this case, access to the internal space is not hindered. In the booth according to the fourth embodiment, the same effect as in the above embodiment can be obtained.

[Embodiment 5]
FIG. 8 is a diagram schematically showing a cross section in a vertical plane for illustrating a schematic configuration of the booth 11 according to the fifth embodiment. The booth 11 according to the fifth embodiment is different from the booth 10 according to the first embodiment in that the suction device 130 and the pipe 142 to the suction device are omitted. The booth 11 according to the fifth embodiment can also obtain the same effects as those of the booth 10 according to the first embodiment, except for the effect of the suction device 130.

[Embodiment 6]
FIG. 9 is a diagram schematically illustrating a front view of the booth 12 according to the sixth embodiment. The booth 60 according to the sixth embodiment has the same configuration as the booth 10 according to the first embodiment, except that the booth 10 includes an upper cover 160 that covers the upper portion of the opening 105.

When the temperature of the air supplied from the ejection device 120 is lower than that of the external space, the air supplied from the ejection device 120 tends to flow downward because the air is heavier than the air in the external space. Therefore, there is a possibility that outside air may easily flow in from the upper part of the opening 105. According to the booth 12 according to the sixth embodiment, since the upper cover 160 that covers the upper portion of the opening 105 is provided, the inflow of outside air from the upper portion of the opening 105 can be suppressed.
In addition, since the air supplied from the ejection device 120 diffuses up, down, left, and right, in the booth 10 according to the first embodiment, a part of the air above the opening 105 does not go in the direction of the suction device 130 but in the upward direction. Disperse to However, by providing the upper cover 160, the air supplied from the ejection device 120 can be rectified in the direction of the suction device 130.

形状 The shape of the upper cover 160 is not particularly limited, but is, for example, a plate member installed in a horizontal direction. From the viewpoint of rectifying the flow of the air supplied from the ejection device 120, the surface of the upper cover 160 on the opening 105 side is preferably formed along the direction in which the air supplied from the ejection device 120 flows.

[Embodiment 7]
FIG. 10 is a diagram schematically illustrating a front view of the booth 21 according to the seventh embodiment. The booth 21 according to the seventh embodiment has the same configuration as the booth 20 according to the second embodiment, except that the booth 20 includes an upper cover 160 that covers the upper portion of the opening 105. As in the sixth embodiment, by providing the upper cover 160, the inflow of outside air from above the opening 105 can be suppressed.
Further, the air supplied from the ejection device 120 can be rectified toward the center of the opening 105.

The shape of the upper cover 160 is, for example, a plate member installed in the horizontal direction, as in the sixth embodiment. From the viewpoint of rectifying the flow of the air supplied from the ejection device 120, the surface of the upper cover 160 on the opening 105 side is preferably formed along the direction in which the air supplied from the ejection device 120 flows.

[Embodiment 8]
FIG. 11 is a diagram schematically showing a front view of a booth 13 according to the eighth embodiment. The booth 13 according to the eighth embodiment differs from the booth 10 according to the first embodiment in that the wind speed of the air (the outer airflow 126 and the inner airflow 127) supplied from the ejection device 120 is different between the upper part and the lower part. More specifically, in the booth 13 according to the eighth embodiment, the wind speed of the upper air of the air (the outer airflow 126 and the inner airflow 127) supplied from the ejection device 120 is higher than the wind speed of the lower air. The other configurations are the same.

(4) When the temperature of the air supplied from the ejection device 120 is lower than that of the external space, the air supplied from the ejection device 120 tends to flow downward because the air is heavier than the air in the external space. Therefore, there is a possibility that outside air may easily flow in from the upper part of the opening 105. According to the booth 13 according to the eighth embodiment, since the wind speed of the air on the upper side of the opening 105 is faster than the wind speed of the air on the lower side, the inflow of outside air from above the opening 105 can be suppressed.

When changing the wind speed of the air (the outer airflow 126 and the inner airflow 127) supplied from the jetting device 120 between the upper part and the lower part, the wind speed may be set at two speeds, high speed and low speed, or may be set upward at multiple speeds. The speed may be set so as to gradually increase.

Note that the configuration in which the wind speed of the upper air is higher than the wind speed of the lower air includes not only means for increasing the linear velocity of the upper air but also means for increasing the amount of air on the upper side.

Here, the wind speed of the air sucked by the suction device 130 may be a constant wind speed in the height direction, or the wind speed of the air sucked on the upper side may be lower than the air speed supplied from the ejection device 120. It may be set higher.

Further, as a modified example of the booth 13 according to the eighth embodiment, when the air supplied from the ejection device 120 is at a higher temperature than the external space, the wind speed of the lower air is made smaller than the wind speed of the upper air. Can also be set faster. Since the air supplied from the ejection device 120 is lighter than the air in the external space, the air tends to flow upward. Therefore, in this case, the inflow of outside air can be suppressed by setting the wind speed of the lower air to be faster than the wind speed of the upper air.

[Embodiment 9]
FIG. 12 is a diagram schematically illustrating a front view of the booth 22 according to the ninth embodiment. The booth 22 according to the ninth embodiment is different from the booth 20 according to the second embodiment in that the wind speeds of the air (the outer airflow 226 and the inner airflow 227) supplied from the two ejection devices 120 are different between the upper part and the lower part. More specifically, in the booth 22 according to the ninth embodiment, the wind speed of the air above the air (the outer airflow 226 and the inner airflow 227) supplied from the ejection device 120 is faster than the wind speed of the lower air. The other configurations are the same.
Further, the setting of the wind speed of the air supplied from the ejection device 120 is the same as in the eighth embodiment, and a description thereof will be omitted.

〔simulation result〕
FIGS. 13 to 15 are diagrams showing the results of a simulation on the temperature distribution of the booth of the present invention. The simulation conditions were as follows: the temperature of the internal space was 23 ° C., the temperature of the external space was 28 ° C., and the effect of each configuration was verified with the goal of satisfying ± 0.1 ° C. as the temperature control of the internal space. In the case where the jetting device is installed only on one side of the first and sixth embodiments in FIG. 13, the wind speeds of the outer airflow and the inner airflow are each set to 2 m / s. Further, in the case where the ejection devices were installed on both sides of Embodiment 2 of FIG. 14 and Embodiment 7 of FIG. 15, the wind speed of the outside airflow and the inside airflow was 2 m / s in each of the ejection devices. Regarding the results of each simulation, the left figure shows the temperature distribution of the vertical cross section of the opening at the position of the inner jet, and the right figure shows the temperature distribution of the vertical cross section of the opening at the position of the outer jet. I have.

FIG. 13 shows (1) a temperature distribution using the booth of the first embodiment, and (2) a temperature distribution using the booth of the seventh embodiment. In both (1) and (2), an excellent temperature distribution was obtained at the position of the inner ejection port. This is considered to be due to the fact that the external airflow suppresses the inflow of the external airflow into the internal space while the external airflow blocks the disturbance.
Further, when comparing (1) and (2), it was found that when the upper cover 160 was provided, a more excellent temperature distribution was obtained. It is considered that this is because the airflow ejected from the ejection device 120 is rectified by the suction device 130 along the upper cover 160 without being dispersed in the upper direction.

FIG. 14 shows (3) the temperature distribution of the opening when the direction (θi1 and θi2, θo1 and θo2) of the airflow is 0 ° in the booth of the second embodiment, and (4) the temperature distribution of the airflow in the booth of the second embodiment. Temperature distribution of the opening when the directions (θi1 and θi2, θo1 and θo2) are 15 °, (5) When the direction of the air flow (θi1 and θi2, θo1 and θo2) is 30 ° in the booth of the second embodiment 3 shows the temperature distribution at the opening of FIG.
Comparing (3) with (4) and (5), (4) the temperature distribution (not shown) in the booth was the most excellent when the airflow directions (θi1, θi2, θo1, and θo2) were 15 °. As a result, it was confirmed that excellent temperature distribution was obtained in the order of (5) when the airflow direction was 30 ° and (3) when the airflow direction was 0 °. This is considered to be due to the fact that the direction of the airflow ejected from both sides of the opening is directed slightly outward, so that when the airflows on both sides collide with each other, the airflow is guided to the external space side.

FIG. 15 shows (6) the temperature distribution of the opening when the airflow direction (θi1 and θi2, θo1 and θo2) is 0 ° in the booth of the seventh embodiment, and (7) the airflow distribution in the booth of the seventh embodiment. Temperature distribution of the opening when the directions (θi1 and θi2, θo1 and θo2) are set to 15 °, (8) when the direction of the airflow (θi1 and θi2, θo1 and θo2) is set to 30 ° in the booth of the seventh embodiment. 3 shows the temperature distribution at the opening of FIG.
Comparing (6), (7), and (8), as in the case of the booth of the second embodiment, (7) When the airflow directions (θi1, θi2, θo1, and θo2) are 15 °, The temperature distribution (not shown) gives the best result, and then, (8) when the direction of the airflow is 30 °, and (6) when the direction of the airflow is 0 °, an excellent temperature distribution is obtained. Admitted.
In addition, when comparing (6) and (4), the temperature distribution of (6) was more excellent. That is, it can be said that the upper cover that covers the upper part of the opening is particularly excellent in the effect of maintaining the temperature of the internal space.

[Appendix]
In each of the above-described embodiments, the airflow covering the opening is constituted by the outer first airflow and the inner second airflow. For example, the third airflow is provided between the first airflow and the second airflow. Does not prevent the formation of airflow. In this way, two or more multilayer airflows can be formed.

In each of the above-described embodiments, each booth may be installed in a room such as a factory so as to form a further partitioned internal space S. However, the booth according to the present invention is not limited to such a booth, and may be a room constructed as a part of a building in a building such as a factory as the internal space S. Further, the booth may not be provided with an air conditioner, and it is possible to suitably prevent dust from being mixed by applying each embodiment.

[Summary]
The booth according to the first aspect of the present invention includes an ejection section that ejects air to an opening communicating with the internal space partitioned from the external space, and the ejection section introduces disturbance from the external space into the internal space. And a second airflow that suppresses the first airflow from being introduced into the internal space inside the first airflow. Have.

According to the above configuration, a booth that can easily access the internal space can be realized without lowering the environmental conditions.

In the booth according to the second aspect of the present invention, the booth according to the first aspect may have a configuration in which the ejection unit ejects air such that the second airflow is weaker than the first airflow.

According to the above configuration, the second airflow that suppresses the introduction of the first airflow into the internal space can be specifically realized.

The booth according to the third aspect of the present invention includes an ejection portion that is provided in an opening communicating with the internal space partitioned from the external space and that ejects air toward the opening, wherein the ejection portion includes a first ejection portion. Air is blown out so as to form an airflow and a second airflow formed inside the first airflow and weaker than the first airflow.

In the booth according to the fourth aspect of the present invention, in any one of the first to third aspects, the ejection unit may form a first ejection port for forming the first airflow and the second airflow. And a second ejection port for the same.

According to the configuration described above, it is possible to specifically realize the required first airflow and second airflow.

ブース A booth according to a fifth aspect of the present invention may be configured such that, in any one of the first to fourth aspects, the directions of the first airflow and the second airflow are horizontal.

According to the above configuration, a booth provided with a suction device can be easily manufactured.

The booth according to the sixth aspect of the present invention may have a configuration in any one of the first to fourth aspects, wherein the directions of the first airflow and the second airflow are vertically downward.

According to the above configuration, the width of the opening is not easily restricted, and the width of the opening can be easily widened.

ブース The booth according to the seventh aspect of the present invention may be configured such that in any one of the first to sixth aspects, the booth includes a suction unit provided to face the ejection unit and sucking air.

According to the above configuration, the target air conditioning control in the internal space is reliably realized.

A booth according to an eighth aspect of the present invention is the booth according to any one of the first to fifth aspects, further comprising two of the ejection parts, wherein the two ejection parts are arranged on both sides of the opening, and The direction of the first airflow and the second airflow formed by the portion is the direction of the opening, and is the direction toward the external space side. good.

According to the above configuration, since the inflow of outside air can be suppressed, the target air conditioning control in the internal space can be reliably realized.

ブース The booth according to the ninth aspect of the present invention may have a configuration in any one of the first to eighth aspects, further comprising an upper cover that covers an upper portion of the opening.

A booth according to a tenth aspect of the present invention is the booth according to any one of the first to ninth aspects, wherein the wind speeds of the first airflow and the second airflow formed by the ejection part are different in a height direction. May be provided.

A booth according to an eleventh aspect of the present invention is the booth according to any one of the first to tenth aspects, further comprising an air conditioning unit configured to perform air conditioning control of the internal space, wherein the first airflow and the second airflow are air-conditioned. It may have a configuration formed by air supplied by the unit.

A booth according to a twelfth aspect of the present invention is the booth according to any one of the first to eleventh aspects, wherein a partition member is provided between the outer space and the inner space except for the opening. You may have.

According to the configuration described above, it is possible to specifically form a required internal space.

An ejection device according to an aspect 13 of the present invention is an ejection device that ejects air to an opening communicating with an internal space partitioned from an external space, wherein disturbance from the external space is introduced into the internal space. And a second airflow inside the first airflow which suppresses the introduction of the first airflow into the internal space. .

According to the above configuration, in the booth having the opening, it is possible to provide an ejection device that has good access to the internal space and does not lower the environmental conditions of the internal space.

A blowing device according to a fourteenth aspect of the present invention is a blowing device that blows air to an opening communicating with an internal space partitioned from an external space, and is formed inside a first airflow and the first airflow. And a second airflow that is weaker than the first airflow.

The present invention is not limited to the embodiments described above, and various modifications are possible within the scope shown in the claims, and embodiments obtained by appropriately combining technical means disclosed in different embodiments. Is also included in the technical scope of the present invention.

10, 11, 12, 13, 20, 21, 22, 30 Booth 101 Ceiling (partition member)
102 Side wall (partition member)
103 Front wall (partition member)
104 Rear wall (partition member)
105 Opening 111 Inlet 112

Outlet

120, 320 Jetting device (jetting part)
121 Outer spout (first spout)
122 inner spout (second spout)
126, 226, 326 Outer airflow (first airflow)
127, 227, 327 Inside airflow (second airflow)
130, 330 Suction device (suction unit)
141 Piping to the jetting device 142 Piping to the suction device 143 Piping to the inlet 144 Piping to the outlet 150 Air conditioner (air conditioner)
151 Open air intake S Internal space P Plane formed by opening

Claims

Equipped with a spout for spouting air into the opening communicating with the internal space separated from the external space,
A first airflow that suppresses disturbance from the external space from being introduced into the internal space; and a first airflow that is inside the first airflow, A second airflow that inhibits introduction.
The booth according to claim 1, wherein the blowing unit blows out the air such that the second airflow is weaker than the first airflow.
An opening provided in an opening communicating with the internal space partitioned from the external space, the jetting unit ejecting air toward the opening is provided.
The ejection unit ejects air so as to form a first airflow and a second airflow formed inside the first airflow and weaker than the first airflow. Booth.
The apparatus according to claim 1, wherein the ejection unit includes a first ejection port for forming the first airflow and a second ejection port for forming the second airflow. 3. The booth according to any one of the items 3.
The booth according to any one of claims 1 to 4, wherein the directions of the first airflow and the second airflow are horizontal.
The booth according to any one of claims 1 to 4, wherein the directions of the first air flow and the second air flow are vertically downward.
The booth according to any one of claims 1 to 6, further comprising a suction unit provided to face the ejection unit and to suck air.
Comprising two jetting parts,
The two ejection parts are arranged on both sides of the opening,
The direction of the said 1st airflow and the said 2nd airflow formed of the said 2 ejection part is a direction of the said opening part, and is a direction which goes to the external space side, The characterized by the above-mentioned. The booth according to any one of 1 to 5.
The booth according to any one of claims 1 to 8, further comprising: an upper cover that covers an upper part of the opening.
10. The booth according to any one of claims 1 to 9, wherein the wind speeds of the first airflow and the second airflow formed by the ejection section are different in a height direction.
An air conditioning unit that controls air conditioning of the internal space,
The booth according to any one of claims 1 to 10, wherein the first airflow and the second airflow are formed by air supplied by the air conditioning unit.
The booth according to any one of claims 1 to 11, wherein a partition member is provided between the external space and the internal space except for the opening.
An ejection device for ejecting air to an opening communicating with an internal space partitioned from an external space,
A first airflow that suppresses disturbance from the external space from being introduced into the internal space;
And a second airflow inside the first airflow, the second airflow suppressing the first airflow from being introduced into the internal space.
An ejection device for ejecting air to an opening communicating with an internal space partitioned from an external space,
A first airflow,
An ejection device for ejecting air so as to form a second airflow formed inside the first airflow and weaker than the first airflow.