JP2021011973A - Air curtain system - Google Patents

Abstract

To prevent a person passing through an entrance from feeling uncomfortable.SOLUTION: An air curtain system comprises: a wall part comprising an entrance for allowing communication between the inside and outside of a room; a shutter part for opening/closing the entrance; an air discharge part provided along at least one edge out of one side edge, the other side edge, and an upper edge out of edges of the entrance, and for discharging an air flow; an outside temperature sensor for measuring a temperature on the outside of the room; a heater part for heating air discharged from the air discharge part; a temperature adjustment part for adjusting output of the heater part; and a control device for controlling the temperature adjustment part depending on the temperature on the outside of the room.SELECTED DRAWING: Figure 2

Description

The present invention relates to an air curtain system.

For example, there is known an air curtain system used in combination with a shutter installed at an entrance / exit of a building such as a factory and an air curtain that blows air to the entrance / exit (see, for example, Patent Document 1). The air curtain prevents the inflow of outdoor air and foreign substances such as insects and dust by generating an air flow that blocks the outdoor air when the shutter is opened and closed.

As an air curtain, one that blows air from both side edges of an entrance / exit in a direction along the main surface of a wall portion is known. In this form of air curtain, one that heats the blown air is known.

Japanese Unexamined Patent Publication No. 2011-141051

By the way, in the above-mentioned conventional air curtain, there is a problem that the temperature of the blown air is not adjusted and the person passing through the doorway feels uncomfortable.

An object of the present invention is to provide an air curtain system capable of preventing a person passing through a doorway from feeling uncomfortable.

According to the first aspect of the present invention, the air curtain system includes a wall portion having an entrance / exit for communicating indoors and outdoors, a shutter portion for opening / closing the entrance / exit, and one side edge of the entrance / exit edges. An air blowing portion that is provided along at least one of the other side edge and the upper edge and blows out an air flow, an outdoor temperature sensor that measures the outdoor temperature, and the air blowing portion. It includes a heater unit for heating air, a temperature control unit for adjusting the output of the heater unit, and a control device for controlling the temperature control unit according to the outdoor temperature.

According to such a configuration, by controlling the output of the heater unit according to the outdoor temperature, it is possible to prevent a person passing through the doorway from feeling uncomfortable.

The air curtain system has an indoor temperature sensor that measures the indoor temperature, and the control device may control the temperature control unit according to the difference between the outdoor temperature and the indoor temperature.

According to such a configuration, for example, when the difference between the outdoor temperature and the indoor temperature is equal to or less than a predetermined temperature, power consumption is consumed by turning off the temperature control unit and not heating the air blown from the air outlet. Can be reduced.

In the air curtain system, the air blowing portion has a blower fan, and the control device measures the air volume of the blower fan based on the temperature difference between the indoor temperature and the outdoor temperature or the outdoor temperature. You may control it.

In the air curtain system, the air blowing portion is provided on one side edge, and the air blowing portion is inclined toward the entrance / exit direction toward the other side edge. You may blow out the flow.

According to such a configuration, the outdoor air that is about to flow into the room through the inlet / outlet is guided to the indoor side or the outdoor side of the wall portion by the air blown from the air blowing portion. As a result, it is possible to prevent the inflow of outdoor air or prevent the outdoor air from coming into contact with a person passing through the doorway.

According to the present invention, by controlling the output of the heater unit according to the outdoor temperature, it is possible to prevent a person passing through the doorway from feeling uncomfortable.

It is a schematic block diagram of the air curtain system of 1st Embodiment of this invention. It is a top view of the air curtain system of the 1st Embodiment of this invention. It is a top view of the air curtain system of the 1st Embodiment of this invention. It is a top view of the air curtain system of the 1st Embodiment of this invention. It is a top view of the air curtain system of the 1st Embodiment of this invention. It is a schematic block diagram of the air curtain system of 5th Embodiment of this invention.

[First Embodiment]
Hereinafter, the air curtain system according to the first embodiment of the present invention will be described in detail with reference to the drawings. The air curtain system of the present embodiment is provided at the entrance / exit of a building such as a factory. In the air curtain system of the present embodiment, when the shutter portion provided at the entrance / exit is opened / closed, the inflow of air is blocked by the air flow to suppress the temperature change in the room.

As shown in FIGS. 1 and 2, the air curtain system 1 of the present embodiment has a wall portion 10 having an entrance / exit 11, a shutter portion 12 for opening / closing the entrance / exit 11, and a first unit that blows out air to generate an air flow AF1. One air blowing part 2, a heater part 21 for heating the air blown from the first air blowing part 2, a temperature controlling part 6 for adjusting the output of the heater part 21, and an outdoor temperature sensor for measuring the temperature of the outdoor air. A room temperature sensor 17 for measuring the temperature of the room air, and a control device 9 for controlling the temperature control unit 6 are provided.

Hereinafter, a case where the indoor ID of the building is heated and the outdoor air OA, which is cold air, flows in from the entrance / exit 11 when the shutter portion 12 is opened / closed will be described. Further, the direction of entering and exiting the indoor ID via the entrance / exit 11 is referred to as the entrance / exit direction D of the entrance / exit 11. The entrance / exit direction D of the entrance / exit 11 is a direction that intersects the main surface of the wall portion 10. Further, the direction toward the indoor ID through the doorway 11 is called the entry side D1 in the entry / exit direction D, and the direction toward the outdoor OD through the doorway 11 is called the exit side D2 in the entry / exit direction D.

The doorway 11 is, for example, an opening for communicating an indoor ID and an outdoor OD of a building such as a factory. The indoor ID of the present embodiment is heated, and the outdoor OD is lower than the indoor ID.

The shutter portion 12 is an opening / closing device capable of opening or closing the doorway 11 formed in the wall portion 10. The shutter portion 12 includes, for example, a shutter case 13 installed on the upper edge 11c of the doorway 11, a guide rail (not shown) arranged along the side edge of the doorway 11, and a curtain 14 guided by the guide rail. It is an electric shutter having (slat) and. The curtain 14 may be made of metal or a vinyl sheet (sheet shutter).
The shutter unit 12 is not limited to the electric shutter, and a manual shutter or a spring shutter may be adopted. The opening / closing direction of the curtain 14 is not limited to the vertical direction, and the shutter case 13 may be arranged on the side edges 11a and 11b of the doorway 11 to provide a horizontal pull shutter that opens and closes the curtain 14 in the lateral direction.

The first air blowing portion 2 is provided along the first side edge 11a, which is one of the side edges 11a and 11b of the inlet / outlet 11.
The first air blowing unit 2 includes a casing 4, a nozzle 5, a plurality of blower fans 8 provided inside the casing 4, and a temperature control unit 6. The nozzle 5 has a slit-shaped outlet 7. The nozzle 5 extends from the vicinity of the upper edge 11c of the doorway 11 to the vicinity of the floor of the factory.

As the heater unit 21, for example, a device using a heat pump can be adopted. The heater portion 21 may be built in the casing 4 or may be provided in an air passage for supplying air to the first air blowing portion 2. The heater unit 21 of the present embodiment heats the air so that the air blown from the first air blowing unit 2 becomes warm air.
The temperature control unit 6 adjusts the output of the heater unit 21.

The first air blowing portion 2 of the present embodiment becomes the entry side D1 in the entry / exit direction D of the entrance / exit 11 from the first side edge 11a (one side edge) toward the second side edge 11b (the other side edge). Air is blown out so as to incline toward the air flow AF1. That is, the nozzle 5 of the first air blowing portion 2 is oriented so as to incline toward the entry side D1 of the entrance / exit direction D from the first side edge 11a toward the second side edge 11b. .. The flow direction of the air (air flow AF1) blown from the first air blowing portion 2 is not parallel to the main surface of the wall portion 10, but is inclined with respect to the main surface of the wall portion 10.
In other words, the nozzle 5 of the first air blowing portion 2 is oriented so that the blown air does not collide with the second side edge 11b and goes toward the inside of the wall portion 10.
The inclination angle of the nozzle 5, that is, the angle formed by the ejection direction of the nozzle 5 and the main surface of the wall portion 10 is an acute angle, and can be set to, for example, 10 ° to 20 °.

The control device 9 controls the temperature control unit 6 according to the temperature of the outdoor OD measured by the outdoor temperature sensor 16. For example, when the temperature of the outdoor OD is equal to or lower than a predetermined temperature (for example, 15 ° C.), the control device 9 sets the temperature control unit 6 so that the air blown from the first air blowing unit 2 becomes higher than the predetermined temperature. Control.
Further, when the temperature of the outdoor OD is equal to or higher than a predetermined temperature (for example, 25 ° C.), the control device 9 turns off the temperature control unit 6 and controls not to heat the air blown from the first air blowing unit 2.

The control device 9 can also control the temperature control unit 6 based on the temperature measured by the outdoor temperature sensor 16 and the indoor temperature sensor 17. For example, when the difference between the temperature of the outdoor OD and the temperature of the indoor ID is 10 ° C. (predetermined temperature) or less, the control device 9 turns off the temperature control unit 6 to blow out the air blown from the first air blowing unit 2. Control not to heat.

The control device 9 controls the air volume of the blower fan 8 based on the temperature difference between the temperature of the indoor ID and the temperature of the outdoor OD. For example, the control device 9 controls to increase the air volume of the blower fan 8 when the difference between the temperature of the outdoor OD and the temperature of the indoor ID is 10 ° C. or more.
The control device 9 can also control the air volume of the blower fan 8 based on the temperature of the outdoor OD. For example, when the temperature of the outdoor OD is equal to or higher than a predetermined temperature (for example, 25 ° C.), the control device 9 controls to increase the air volume of the blower fan 8.

Next, the operation of the air curtain system 1 of the present embodiment will be described.
When the user operates the shutter unit 12 to open the curtain 14 of the shutter unit 12, air is blown from the first air blowing unit 2 by the control device 9. The control device 9 controls the blower fan 8 so as to obtain the optimum air flow AF1 based on the temperature difference between the indoor ID and the outdoor OD and the distance between the side edges 11a and 11b.
As shown in FIG. 2, the outdoor air OA that is about to flow in toward the entry side D1 in the entry / exit direction D has an indoor ID and a wall portion 10 due to the air flow AF1 blown from the first air outlet portion 2. It is guided to the indoor side of.

According to the above embodiment, by controlling the temperature control unit 6 according to the temperature of the outdoor OD, it is possible to prevent a person passing through the doorway 11 from feeling uncomfortable.
Further, for example, when the difference between the temperature of the outdoor OD and the temperature of the indoor ID is equal to or less than a predetermined temperature, the temperature control unit 6 is turned off and the air blown from the first air blowing unit 2 is not heated to consume power. Can be reduced.

Further, the outdoor air OA that is about to flow into the indoor ID through the inlet / outlet 11 is guided to the indoor side of the wall portion 10 by the air flow AF1 blown out from the first air blowing portion 2. As a result, it is possible to prevent the outdoor air OA from coming into contact with the person H passing through the doorway 11.
That is, the outdoor air OA is guided to the inside of the wall portion 10 by blowing out the air flow AF1 so as to incline toward the entry side D1 in the entry / exit direction D from the first side edge 11a toward the second side edge 11b. can do.

Further, since the air outlet 7 extends to the vicinity of the floor, the cold air flowing in from below can be blocked.
Further, energy saving can be achieved by turning off the temperature control unit 6 according to the temperature of the outdoor OD.

In the air curtain system 1 of the above embodiment, the direction of the air blown out is determined by the shape of the nozzle 5, but the direction is not limited to this, and the direction of the air blown out is determined by using a straightening vane. May be.
Further, the air outlet 7 does not need to extend to the vicinity of the upper edge 11c of the doorway 11, and does not need to extend to the vicinity of the floor.
Further, in the above embodiment, the temperature of the indoor ID is measured by using the indoor temperature sensor 17, but the present invention is not limited to this. For example, the control device 9 may read the set temperature of the air-conditioning equipment of the indoor ID and control the set temperature as the temperature of the indoor ID.

[Second Embodiment]
Hereinafter, the air curtain system according to the second embodiment of the present invention will be described in detail with reference to the drawings. In this embodiment, the differences from the first embodiment described above will be mainly described, and the description thereof will be omitted for the same parts.
As shown in FIG. 3, the first air blowing portion 2 of the air curtain system 1B of the present embodiment becomes the exit side D2 of the entrance / exit direction D from the first side edge 11a toward the second side edge 11b. The air flow AF1 is blown out so as to incline toward it. That is, the nozzle 5 of the first air blowing portion 2 is oriented so as to incline toward the exit side D2 of the entrance / exit direction D from the first side edge 11a toward the second side edge 11b. ..

According to the above embodiment, the outdoor air OA that is about to flow in toward the entry side D1 in the entry / exit direction D is an outdoor OD and the wall portion 10 due to the air flow AF1 blown from the first air blowing portion 2. Is guided to the outside of the room.
That is, the outdoor air OA is guided to the outside of the wall portion 10 by blowing out the air flow AF1 so as to incline toward the exit side D2 in the entry / exit direction D from the first side edge 11a toward the second side edge 11b. can do.

[Third Embodiment]
Hereinafter, the air curtain system according to the third embodiment of the present invention will be described in detail with reference to the drawings. In this embodiment, the differences from the first embodiment described above will be mainly described, and the description thereof will be omitted for the same parts.
As shown in FIG. 4, the air curtain system 1C of the present embodiment is provided along the first air blowing portion 2 having the same configuration as the first air blowing portion 2 of the first embodiment and the second side edge 11b. It has a second air outlet 3 that has been removed.

The second air blowing portion 3 blows out the air flow AF2 so as to incline toward the exit side D2 of the entrance / exit direction D from the second side edge 11b toward the first side edge 11a.
The first air blowing portion 2 blows out the air flow AF1 so as to incline toward the entry side D1 in the entry / exit direction D from the first side edge 11a toward the second side edge 11b.

According to the above embodiment, the outdoor air OA that is about to flow into the indoor ID through the inlet / outlet 11 is guided to the indoor side of the wall portion 10 by the air flow AF1 blown from the first air outlet portion 2. (Ii) The air flow AF2 blown from the air blowing portion 3 guides the air to the outside of the room. As a result, it is possible to prevent the inflow of the outdoor air OA and prevent the outdoor air OA from coming into contact with the person H passing through the doorway 11.

In the air curtain system 1B of the present embodiment, the first air blowing portion 2 and the second air blowing portion 3 are inclined toward the entry / exit direction D from one side edge toward the other side edge. It is configured to blow out air, but it is not limited to this. For example, one of the first air blowing portion 2 and the second air blowing portion 3 is configured to blow air flow from one side edge to the other toward the side edge (in the direction along the main surface of the wall portion 10). May be good.

[Fourth Embodiment]
Hereinafter, the air curtain system according to the fourth embodiment of the present invention will be described in detail with reference to the drawings. In this embodiment, the differences from the third embodiment described above will be mainly described, and the description thereof will be omitted for the same parts.
As shown in FIG. 5, the first air blowing portion 2 of the air curtain system 1D of the present embodiment becomes the exit side D2 of the entrance / exit direction D from the first side edge 11a toward the second side edge 11b. Blow out air so that it slopes toward you. That is, both the first air blowing portion 2 and the second air blowing portion 3 blow out the air flows AF1 and AF2 so as to incline toward the exit side D2 in the entry / exit direction D toward the opposite side edge.

The nozzles 5 of the first air blowing portion 2 and the second air blowing portion 3 are formed so that the angles of the blown air flows AF1 and AF2 are substantially the same. Further, the blower fans 8 of the first air blowing portion 2 and the second air blowing portion 3 are adjusted so that the strengths of the blown air flows AF1 and AF2 are substantially the same.

Next, the operation of the air curtain system 1D of the present embodiment will be described.
As shown in FIG. 5, the air streams AF1 and AF2 blown from the first air blowing portion 2 and the second air blowing portion 3 collide with each other near the center in the width direction of the inlet / outlet 11. Here, the flow direction of the air flow AF1 blown out from the first air blowing portion 2 and the flow direction of the air flow AF2 blown out from the second air blowing portion 3 both go toward the exit side D2 in the entry / exit direction D. Has ingredients. As a result, the air flow after the collision flows to the exit side D2 in the entry / exit direction D. As a result, the outdoor air OA that is about to flow into the indoor ID through the inlet / outlet 11 is pushed out by the air flow blown from the first air blowing portion 2 and the second air blowing portion 3.

According to the above embodiment, it is possible to prevent the inflow of outdoor air OA and suppress the temperature change of the indoor ID.

[Fifth Embodiment]
Hereinafter, the air curtain system according to the fifth embodiment of the present invention will be described in detail with reference to the drawings. In this embodiment, the differences from the first embodiment described above will be mainly described, and the description thereof will be omitted for the same parts.
As shown in FIG. 6, the air curtain system 1E of the present embodiment has a third air blowing portion 20 provided along the edge of the upper edge 11c of the inlet / outlet 11.
The third air blowing unit 20 has a casing 4, a nozzle 5, a plurality of blower fans 8, and a temperature controlling unit 6, similarly to the air blowing unit 2.

As described above, for example, when the air blowing portions cannot be provided on the side edges 11a and 11b, the third air blowing portion 20 can be provided on the upper edge 11c of the inlet / outlet 11. That is, the air blowing portion may be provided along at least one of the edges of the inlet / outlet 11, one side edge 11a, the other side edge 11b, and the upper edge 11c.

In the above embodiment, the case where the indoor ID of the building is heated and the outdoor air OA, which is cold air, flows in from the entrance / exit 11 when the shutter portion 12 is opened / closed has been described. When the indoor ID of the building is cooled and warm air flows in from the inlet / outlet 11 when the shutter portion 12 is opened / closed, both the first air outlet 2 and the second air outlet 3 head toward the opposite side edges. Therefore, the air flows AF1 and AF2 may be blown out so as to be inclined toward the entry side D1 in the entry / exit direction D.
According to such a configuration, the indoor air IA (cold air) that is about to flow out to the outdoor OD through the inlet / outlet 11 is pushed back by the air flow blown from the first air blowing portion 2 and the second air blowing portion 3. Thereby, the outflow of the indoor air IA can be prevented.

Although the embodiments of the present invention have been described in detail with reference to the drawings, the specific configuration is not limited to the embodiments, and includes design changes and the like within a range that does not deviate from the gist of the present invention. ..
In the above embodiment, the air outlets 2 and 3 are provided only on the side edges 11a and 11b of the inlet / outlet 11, but the present invention is not limited to this, and the air outlets 2 and 3 are provided on the upper edge 11c of the inlet / outlet 11. It may be provided in.

1,1B, 1C, 1D Air curtain system 2 1st air outlet 3 2nd air outlet 4 Casing 5 Nozzle 6 Temperature control 7 Outlet 8 Blower fan 9 Control device 10 Wall 11 Inlet 11a First side edge 11b Second side edge 11c Upper edge 12 Shutter part 13 Shutter case 14 Curtain 16 Outdoor temperature sensor 17 Indoor temperature sensor 20 Third air blowout part 21 Heater part D In / out direction D1 In / out side D2 Outside IA Indoor air ID Indoor OA Outdoor air OD Outdoor

Claims (4)

Along at least one of the side edge, the other side edge, and the upper edge of the wall portion having an entrance / exit that communicates indoors and outdoors, the shutter portion that opens / closes the entrance / exit, and the edge of the entrance / exit. The output of the heater unit is adjusted by the air outlet unit that blows out the air flow, the outdoor temperature sensor that measures the outdoor temperature, the heater unit that heats the air blown out from the air outlet unit, and the heater unit. An air curtain system including a temperature control unit and a control device that controls the temperature control unit according to the outdoor temperature. It has an indoor temperature sensor that measures the indoor temperature.
The air curtain system according to claim 1, wherein the control device controls the temperature control unit according to a difference between the outdoor temperature and the indoor temperature. The air outlet has a blower fan and
The air curtain system according to claim 1 or 2, wherein the control device controls the air volume of the blower fan based on the temperature difference between the indoor temperature and the outdoor temperature or the outdoor temperature. The air blowing portion is provided on one side edge, and is provided.
The air curtain system according to any one of claims 1 to 3, wherein the air blowing portion blows out an air flow so as to incline toward the entrance / exit direction toward the other side edge.

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