JP6388498B2 - Opening and closing body device and opening and closing body control method - Google Patents

Description

  The present invention relates to an opening / closing body device installed in an opening having a temperature difference between the outside and the inside, such as a large-sized freezer or an entrance / exit of a refrigerator, and an opening / closing body control method for controlling the opening / closing body device.

Opening / closing body devices such as a heat-insulated door and a sheet-like shutter curtain are installed in an opening having a temperature difference such as a large freezer or an entrance / exit of a refrigerator. As an opening / closing body device composed of a sliding door type door, there are those shown in Patent Documents 1, 2, and 3. Further, instead of a sliding door type door, there is one provided with a sheet-like shutter curtain at the opening.
JP 05-157431 A JP 2001-280816 A JP 2007-113885 A

  Many of these opening / closing body devices perform the operation electrically. Some of the devices that perform the opening / closing operation electrically as described above are configured to defrost the movable portion at regular intervals in order to stabilize the operation of the movable portion. For example, in the case of a sheet-like shutter curtain, periodic opening and closing operations are performed to prevent frost from adhering to the sheet and to ensure smooth opening and closing. However, since these doors and shutter curtains are composed of a single sheet, there is a problem in that cold air escapes during normal use, maintenance, or defrosting operation and energy is lost. In addition, this problem is affected as the temperature difference between the room and the room increases.

  The present invention has been made in view of the above points, and provides an opening / closing body device and an opening / closing body control method capable of suppressing energy loss during an opening / closing operation as much as possible even when the temperature difference between the inside and outside of the room is large. It is in.

A first feature of the opening / closing body device according to the present invention is that a compartment chamber configured to maintain a temperature difference between the outside and the inside and a peripheral portion of an opening serving as an entrance to the compartment chamber are A first opening / closing member that opens and closes the first opening / closing member to partition the opening; and a first opening / closing member provided closer to the compartment than the first opening / closing member. Second opening / closing body means for partitioning the opening by opening / closing a second opening / closing member from the peripheral edge of the opening so as to have a predetermined interval with respect to the shielding member; A first operator means for instructing an opening operation of the first and second opening / closing body means; and a second operator means for instructing an opening operation of the first and second opening / closing body means provided in the compartment. When, in accordance with an instruction of the opening operation from the first or second operator means, e by the temperature difference In further comprising a control means for controlling the opening and closing operation of the first and second opening and closing body means so as to suppress Energy loss.

  The compartment is configured to maintain a temperature difference between the outside and the inside, and is a freezer, refrigerator or cooling room whose internal temperature is lower than the outside, or a greenhouse whose internal temperature is higher than the outside. Etc. In other words, a compartment means a partitioned space, for example, to provide a temperature difference in some sense even in the case of a simple passage or space such as a corridor, a staircase, or an elevator pit. What is necessary is just to be divided into. In the opening serving as the entrance to the compartment, an opening / closing member such as a heat-insulated screen curtain is housed in the upper part, which is one of the peripheral edges of the compartment opening, and passes through a slit such as a lintel. And the opening is opened and closed electrically. In addition to this, the opening / closing member is housed in the side portion of the opening, and is opened / closed by an electric lateral pulling method, and the opening / closing member is housed in the lower part of the opening and moved by an electric lifting method.

  In the present invention, the first and second opening / closing members are opened and closed at a predetermined interval from the peripheral edge of the opening serving as the entrance to the compartment, and the opening is partitioned by the two opening / closing members. By partitioning the opening with the two opening / closing members in this way, an air layer is formed between the two opening / closing members, the heat insulation effect is enhanced by the air layer, and the energy due to the temperature difference between the compartment and the outside The loss was suppressed. In addition, it is configured such that the opening is partitioned by two opening / closing members, and only the opening / closing operation of one of the first and second opening / closing members is performed and the opening / closing operation is not performed at the same time. Energy loss due to temperature difference between and is suppressed. Further, by making the moving speed during the opening / closing operation of the first opening / closing member sufficiently higher than the moving speed of the second opening / closing member and increasing the frequency of use of the first opening / closing member having a high movement speed, the compartment Energy loss due to temperature difference between the outside and the outside.

  A second feature of the opening / closing member device according to the present invention is that in the opening / closing member device according to the first feature, the compartment is constituted by a refrigerator, a freezer or a refrigerator. This specifically limits compartments configured to maintain the temperature difference between the outside and the inside to freezers, freezers or refrigerators, and suppresses energy loss when cold air escapes from these compartments. It is what you do.

  A third feature of the opening / closing member device according to the present invention is the opening / closing member device according to the first or second feature, wherein the control means opens / closes one of the first and second opening / closing member means. Only the operation is executed and the opening / closing operation is not executed at the same time. In this configuration, only the opening / closing operation of one of the first and second opening / closing members is executed. In other words, by alternately opening and closing only one of them and not performing the opening and closing operation at the same time, more one of the two of the first and second opening and closing members is closed and energy is generated. Loss is suppressed.

  According to a fourth feature of the switchgear device according to the present invention, in the switchgear device according to the first or second feature, the control means transmits a signal to the first and second switchgear means. Is to control the opening and closing operation. This is such that only one of the opening / closing operations is executed by switching the signal transmission means from the control means to the first and second opening / closing body means.

  A fifth feature of the opening / closing member device according to the present invention is that, in the opening / closing member device according to the first, second, third or fourth feature, the moving speed of the second opening / closing member means during the opening / closing operation. Is about 30 to 70% of the moving speed during the opening / closing operation of the first opening / closing member means, and the control means uses the opening / closing operation of the first opening / closing member means when entering / exiting the compartment. The purpose is to control the second opening / closing member means so as to be higher than the use frequency of the opening / closing operation. This is because the movement speed of the first opening / closing member during the opening / closing operation is sufficiently faster than the movement speed of the second opening / closing member, and the use frequency of the first opening / closing member having a high movement speed is increased. The state in which one open / close member is closed is generated at a higher frequency, and energy loss due to a temperature difference between the compartment and the outside is effectively suppressed.

A sixth feature of the opening / closing member device according to the present invention is the opening / closing member device according to the fifth feature, wherein when the control means enters and exits the compartment, the first or second operator means. In response to the opening operation instruction from the first opening / closing body means, the second opening / closing body means is opened first, and after the second opening / closing body means is fully opened, the opening operation of the first opening / closing body means and several seconds have elapsed. The opening operation instruction from the first or second operator means is performed until the first opening / closing member means is executed for several minutes as the first time after the first closing means is fully closed. When the first opening / closing member means is repeatedly opened and closed several seconds later, the first opening / closing member means is fully closed and the first time has elapsed. The second opening / closing member means is fully closed. In response to the opening operation instruction when entering or exiting the compartment, first, the opening operation of the second opening / closing member means having a low moving speed is executed, and then the first opening / closing member means having a high moving speed is subsequently executed. The opening operation and the closing operation are performed, and the time during which the opening is in the open state is shortened as much as possible to suppress energy loss. Furthermore, by not performing the closing operation of the second opening / closing member means having a slow movement speed until several minutes have passed as the first time, when entering the compartment and leaving within this first time, Since the second opening / closing member means is in the fully open state, the opening and closing operations of the first opening / closing member means having a high moving speed are immediately executed, and the time during which the opening is in the open state can be shortened as much as possible. Along with that, smooth entrance and exit can be realized.

  According to a seventh feature of the opening / closing body device according to the present invention, in the opening / closing body device according to the sixth feature, the control means starts the first time after the first opening / closing body means is fully closed. When the sufficiently large second time has elapsed, the defrosting operation of the first or second opening / closing member means is executed, and then the defrosting operation is performed on the first or second opening / closing member means that has not been executed. It is to carry out driving. This is because the first and second opening / closing member means are alternately defrosted when a second time of, for example, about 20 to 40 minutes, which is sufficiently larger than the first time (about several minutes) has elapsed. It is something to be executed. Here, the defrosting operation is to periodically open and close the first and second opening / closing member means so that frost does not form on the components of the first and second opening / closing member means. Since either one is in the closed state during the defrosting operation, energy loss can be suppressed as much as possible.

  An eighth feature of the opening / closing member device according to the present invention is the opening / closing member device according to any one of the first to seventh features, wherein the first and second opening / closing member means are winding shafts. One end is wound around the sheet, and the other end is opened and closed according to the winding state. The sheet-like curtain means, and the winding shaft is rotatably held. The curtain means is configured so that the means can go in and out, and guide means for guiding both end portions of the curtain means. This clarifies that the first and second opening / closing member means are constituted by a roll screen device composed of a sheet-like curtain.

  A ninth feature of the opening / closing member device according to the present invention is the opening / closing member device according to any one of the first to eighth features, wherein the compartment is configured by a refrigerator, a freezer, or a refrigerator. When the anterior chamber in which the room temperature is high and the room temperature is set lower than the outside is provided so as to be adjacent to each other through the opening, it is described in any one of the first to eighth features. The opening / closing body device is provided at the peripheral edge of the opening serving as the entrance to the front chamber. This is because when the compartment is composed of a refrigerator, freezer or refrigerator, in order to stabilize the temperature inside the compartment, if a front room whose room temperature is lower than the outside is provided, A similar opening / closing body device is installed.

The first feature of the opening / closing body control method according to the present invention is the first feature provided at the peripheral portion of the opening serving as the entrance / exit of the compartment configured to maintain the temperature difference between the outside and the inside. An opening / closing member and a peripheral edge portion of the opening so as to be closer to the compartment than the first opening / closing member means and at a predetermined interval with respect to the first shielding member of the first opening / closing member means The opening / closing operation with the second opening / closing member provided in the chamber is reduced in energy loss due to the temperature difference in accordance with an opening operation instruction from the first or second operating means provided inside and outside the compartment. It is to control to suppress. This is an invention of an open / close body control method corresponding to the first feature of the open / close body device.

  A second feature of the opening / closing member control method according to the present invention is that, in the opening / closing member control method according to the first feature, the compartment is constituted by a refrigerator, a freezer or a refrigerator. This is an invention of an open / close body control method corresponding to the second feature of the open / close body device.

  A third feature of the opening / closing member control method according to the present invention is that, in the opening / closing member control method according to the first or second feature, only one of the first and second opening / closing member means is operated. And the opening / closing operation is not executed at the same time. This is an invention of an open / close body control method corresponding to the third feature of the open / close body device.

  A fourth feature of the opening / closing member control method according to the present invention is that, in the opening / closing member device according to the first or second feature, the signal transmission means is switched to the first and second opening / closing member means. It is to control the opening and closing operation. This is an invention of an open / close body control method corresponding to the fourth feature of the open / close body device.

  A fifth feature of the opening / closing member control method according to the present invention is the opening / closing member control method according to the first, second, third, or fourth feature, wherein the second opening / closing member means is opened or closed. The moving speed is about 30 to 70% of the moving speed during the opening / closing operation of the first opening / closing member means, and the frequency of use of the opening / closing operation of the first opening / closing member means is the second when entering / exiting the compartment. The opening / closing body means is controlled so as to be higher than the use frequency of the opening / closing operation. This is an invention of an open / close body control method corresponding to the fifth feature of the open / close body device.

A sixth feature of the opening / closing member control method according to the present invention is the opening / closing member control method according to the fifth feature, wherein the opening / closing member control method according to the present invention is configured to open from the first or second operator means when entering or exiting the compartment. In response to the operation instruction, the second opening / closing member means is opened first, and after the second opening / closing member means is fully opened, the first opening / closing member means is opened and closed after several seconds. In response to the instruction of the opening operation from the first or second operating means until the first opening / closing means is fully closed until several minutes have passed as the first time. opening operation and repeat the closing operation after a lapse of several seconds to perform the first opening and closing body means Te, the first closing body means the second upon expiration of further said first time after stopping the fully closed The open / close body means is to be fully closed. This is an invention of an open / close body control method corresponding to the sixth feature of the open / close body device.

  A seventh feature of the opening / closing member control method according to the present invention is the opening / closing member control method according to the sixth feature, wherein the first opening / closing member means is sufficiently longer than the first time after the fully closed stop. When the large second time has elapsed, the defrosting operation of the first or second opening / closing member means is executed, and then the defrosting operation is executed for the first or second opening / closing member means that has not been executed. There is to do. This is an invention of an open / close body control method corresponding to the seventh feature of the open / close body device.

  An eighth feature of the opening / closing member control method according to the present invention is the opening / closing member control method according to any one of the first to seventh features, wherein the first and second opening / closing member means are wound. One end portion is wound around the take-up shaft, and the other end portion opens and closes the opening according to the take-up state, and a sheet-like curtain means, and the take-up shaft is rotatably held from the slit-shaped entrance and exit. The curtain means is configured to include the curtain means storage means, and guide means for guiding both end portions of the curtain means. This is an invention of an open / close body control method corresponding to the eighth feature of the open / close body device.

  According to a ninth feature of the opening / closing member control method according to the present invention, in the opening / closing member control method according to any one of the first to eighth features, the compartment configured by a refrigerator, a freezer, or a refrigerator. When the front chamber, which is set to be higher in temperature than the chamber and lower in temperature than the outside, is provided so as to be adjacent through the opening, any one of the first to eighth features The open / close body control method described is applied to the peripheral edge of the opening serving as the entrance to the front chamber. This is an invention of an open / close body control method corresponding to the ninth feature of the open / close body device.

  According to the opening / closing device and the opening / closing control method of the present invention, there is an effect that energy loss during the opening / closing operation can be suppressed as much as possible even when the temperature difference between the indoor and the outdoor is large.

It is a front view which shows schematic structure of the roll screen apparatus which concerns on this invention. It is the side view which looked at the roll screen apparatus of FIG. 1 from the left side. It is a figure which shows schematic structure of the control apparatus which drive-controls the electric motor of a main screen apparatus and a backup screen apparatus. It is a flowchart figure which shows an example of the shutter control process which the control apparatus of FIG. 3 performs. It is a figure which shows the modification of the roll screen apparatus of FIG.

  Preferred embodiments of an opening / closing body device according to the present invention will be described below with reference to the accompanying drawings. In this embodiment, a roll screen device that is controlled to be opened and closed (lifted up and down) as an opening and closing body device will be described as an example. This opening / closing body device has an opening direction on the upper side and a closing direction on the lower side, and is provided with storage boxes 11 and 12 on the upper ceiling or the like. FIG. 1 is a front view showing a schematic configuration of a roll screen device according to the present invention. FIG. 2 is a side view of the roll screen device of FIG. 1 viewed from the left side.

  Two roll screen devices are provided in parallel along the direction of passage of the entrance / exit, and the main screen device 10 is provided on the front chamber side, and the backup screen device 20 is provided on the freezer side. is there. The freezer is configured to maintain a temperature difference between the outside and the inside, and is set to about −25 [° C.], and the temperature in the freezer is higher than −5 [° C.] in the front chamber. Is set low. Similarly, the temperature of the front chamber is set lower than that of the outside. A freezer is also called a refrigerator or a cooling room. In FIG. 2, the distance between the main screen device 10 and the backup screen device 20 is, for example, about 300 [mm]. This distance of 300 [mm] is an example, and may be more or less than this. An air layer is formed between the screen curtain 15 of the main screen device 10 and the screen curtain 25 of the backup screen device 20, and the heat insulation effect is enhanced by this air layer. Since FIG. 1 is a view seen from the front chamber side of the freezer, only the main screen device 10 is shown.

In order to form an air layer between the screen curtain 15 of the main screen device 10 and the screen curtain 25 of the backup screen device 20 in the closed state, the two in the closed state are arranged in parallel along the passing direction of the entrance / exit part so as to be spaced apart from each other. Is provided.
The distance between the two in the closed state is, for example, about 300 mm. It should be noted that this interval has a separation distance that does not interfere with each other when both are closed, and as shown in FIGS. 2 and 5, for example, both (or If the length in the direction of passage of the entrance / exit part of the closing direction tip which is at least one of the weight bars is longer than that of the screen curtain 15 provided at the upper portion of the seat slope, The weight bar is configured to be separated from the front end in the closing direction of the other opposing screen curtain 15 to an extent that does not prevent the full closing.

In addition, since the above-mentioned separation interval (length) is preferably not so large in order to ensure a temperature difference, the width direction of the entrance / exit portion (the direction perpendicular to or substantially perpendicular to the passage direction of the entrance / exit portion) It is shorter than the vertical length of the entrance / exit part. That is, in other words, the separation interval (length) is shorter than the length in the width direction of the entrance / exit portion of the screen curtain 15 and the length of the opening / closing movement of the screen curtain 15 (movement amount from fully open to fully closed). Yes.
Further, as shown in FIG. 2 and FIG. 5, the sum of the lengths in the passing direction of the entrance / exit portions of the storage boxes (and the outer diameter of the winding shaft) in the main screen device 10 and the backup screen device 20. It is preferable that the length is short, and further, as shown in FIG. 2, the main screen device 10 and the backup screen device 20 in the passing direction of the entrance / exit portion of each storage box (or winding, shaft outer diameter). It is more preferable that the length is shorter than either of the lengths, and it is more preferable that the length is shorter than either of the lengths.

  The main screen device 10 and the backup screen device 20 according to this embodiment are configured such that a leading edge side of a curtain cloth made of a synthetic fiber cloth (polyester or the like) is wound around a take-up shaft and rewound on a take-up shaft. The doorway is opened and closed. Fasteners are provided over the entire length of both sides of the curtain cloth. The fastener portion is sandwiched between inner rails provided in the guide rails 12, 13, 22, and 23 so as to slide freely in the vertical direction. This fastener portion uses an element which is a meshing portion of a normal slide fastener (sliding fastener). This fastener part is made of metal fasteners made of metal such as red, aluminum, or white elements. Resin elements made of coiled polyester resin or elements made of resin such as polyacetal are injected onto the tape. Consists of molded screw-on fasteners.

  Internal guide rails are provided in the guide rails 12, 13, 22, and 23, but the illustration is omitted. Accordingly, in FIG. 1 and FIG. 2, the guide rails 12, 13, 22, and 23 are shown to be provided over the entire length on both sides of the curtain cloth, but actually the guide rails 12, 13, 22, and 23 are shown. Inner guide rails (inner rails) are provided inside, and both sides of the curtain cloth are sandwiched between the guide rails 12, 13, 22, and 23 so as to slide freely in the vertical direction. Yes.

  The main screen device 10 and the backup screen device 20 are provided directly on the ceiling of the freezer or indirectly through other members, or directly on the beam above the freezer or indirectly with respect to other members. Or provided in a partition structure separately constructed in the freezer. The main screen device 10 and the backup screen device 20 include storage boxes 11 and 21, guide rails 12, 1322 and 23, take-up shafts 14 and 24, screen curtains 15 and 25 made of synthetic fiber fabric, and a weight bar 16, respectively. , 26.

  The winding shafts 14 and 24 are rotatably mounted between bearing portions (not shown) and roll end portions (not shown) provided on the inner wall surfaces on the left and right side surfaces in the storage boxes 11 and 21. ing. One end of the screen curtains 15 and 25 is attached to the take-up shafts 14 and 24, and weight bars 16 and 26 are attached to the other ends, and are provided at the lower ends of the storage boxes 11 and 21. Guided by a slit-shaped entrance. Accordingly, the screen curtains 15 and 25 are wound around the take-up shafts 14 and 24 and fed out from the slit-shaped doorway according to the rotation of the take-up shafts 14 and 24. An abnormality detection sensor (not shown) for detecting an abnormal state when the screen curtains 15 and 25 are loosened in the storage boxes 11 and 21 during winding is attached to the inner wall surfaces of the storage boxes 11 and 21. ing.

  The winding shafts 14 and 24 have a hollow pipe shape, and the rotation is controlled by an electric motor inserted in the hollow portion. The outer side of the main body of the electric motor and the inner side of the winding shafts 14 and 24 are fixed, and the output shaft of the electric motor is fixed by bolts or the like so as not to rotate to the bearing portion. Therefore, when the electric motor rotates in the forward direction, the screen curtains 15 and 25 operate so as to be drawn out, and when the electric motor rotates in the reverse direction, the screen curtains 15 and 25 operate so as to be wound up. That is, the opening / closing operation of the screen curtains 15 and 25 as opening / closing bodies is controlled by rotating the electric motor in the forward and reverse directions. Note that the electric motor is not shown because it exists in the winding shafts 14 and 24.

  The main screen device 10 is set so that the moving operation speed when opening and closing the screen curtain is faster than that of the backup screen device 20. For example, assuming that the moving speed when the screen curtain of the main screen device 10 is opened and closed is 100%, the moving speed when the screen curtain 25 of the backup screen device 20 is opened and closed is about 50% of that half. 50% here is an example, and can be arbitrarily set in the range of 30 to 70%. As a result, during normal entry and exit, the screen curtain 15 of the main screen device 10 provided on the front chamber side is set to be used frequently, so that the backup screen device 20 is fully opened and the use frequency is reduced. It is set to.

  Accordingly, the main screen device 10 is frequently used and wear of parts increases, so that the necessity for maintenance increases. On the other hand, since the backup screen device 20 is used less frequently and wear of parts is suppressed as much as possible, the frequency of maintenance can be reduced. During maintenance or defrosting operation, the screen curtains 15 and 25 of either the main screen device 10 or the backup screen device 20 are fully closed to minimize the escape of cold air during the work. it can. The opening / closing speeds of the screen curtains 15 and 25 when the main screen device 10 and the backup screen device 20 are opened and closed may be the same.

  FIG. 3 is a diagram illustrating a schematic configuration of a control device that drives and controls the electric motors of the main screen device and the backup screen device. The control device 30 has a microcomputer configuration, and a DC voltage is supplied from the external power supply 40 via a power supply line. The control device 30 is provided in the storage box 11 of the main screen device 10, and the electric motor of the backup screen device 20 is operated from the control device side in the storage box 11. The control device 30 includes a control circuit 31, an inverter circuit 32, a heater circuit 33, and switching circuits 34 and 35. In this embodiment, the cost is reduced by using one control device 30 for the main screen device 10 and the backup screen device 20.

  The electric motor 17 of the main screen device 10 is provided with a limit switch 18 for detecting the rotation position thereof, that is, the opening / closing position and opening / closing state of the screen curtain 15, and a heater 19 for heating around the limit switch 18. The electric motor 27 of the backup screen device 20 is provided with a limit switch 28 for detecting the rotation position, that is, the open / close position and open / close state of the screen curtain 25, and a heater 29 for warming around the limit switch 28. The limit switches 18 and 28 are constituted by a pulse generation type rotary encoder or the like. Since the limit switches 18 and 28 output a pulse signal corresponding to the rotation of the electric motors 17 and 27 to the control circuit 31, the rotation positions of the electric motors 17 and 27 and the closed end portions of the screen curtains 15 and 25 are output. The position in the opening and the like are calculated by the control circuit 31 based on the generation state of this pulse.

  The control circuit 31 is supplied with a control signal from an operation switch 41 provided near the periphery of the opening on the anterior chamber side and a control signal from an operation switch 42 provided near the periphery of the opening in the freezer. Is done. The control circuit 31 executes processing by a one-shot operation based on a control signal corresponding to the operation state of the operation switches 41 and 42. The inverter circuit 32 converts a DC voltage from the external power supply 40 into an AC voltage based on a control signal from the control circuit 31, and supplies power to the electric motors 17 and 27 through the switching circuit 34. . Based on the control signal from the control circuit 31, the heater circuit 33 switches and supplies the heat retaining power to the heaters 19 and 29 via the switching circuit 35. Since the power supply to the heater 29 of the backup screen device 20 is turned off while the main screen device 10 is frequently opened and closed, energy saving can be achieved. Further, the control circuit 31 receives a signal indicating shutter position information from the limit switches 18 and 28 provided in the electric motors 17 and 27, and based on the received signal, controls the inverter circuit 32, the heater circuit 33, and the switching circuits 34 and 35. I have control. Details of the control operation of the control circuit 31 will be described later.

  The operation switches 41 and 42 are operators having only an open button, and output a signal corresponding to the operation of the open button to the control circuit 31. The reason why the operation switches 41 and 42 are provided only with the open button is to suppress the cold air in the freezer from flowing out to the outside as much as possible. Accordingly, when the screen curtains 15 and 25 are opened by operating the open button, the screen curtain 15 automatically closes when a predetermined time (for example, about 3 seconds) elapses after the opening operation is completed. Has been. An operation switch having an open / close button may be provided. The operation switches 41 and 42 may be wireless operation elements. You may provide an obstruction detection apparatus in the closed side front-end | tip part of the screen curtains 15 and 25. FIG.

FIG. 4 is a flowchart showing an example of shutter control processing executed by the control device of FIG. Hereinafter, an example of the processing operation executed by the control device will be described using this flowchart. In this embodiment, when the usage frequency of the main screen device 10 and the backup screen device 20 provided between the front chamber and the freezer is low, both screen curtains 15 and 25 are fully closed and formed in the middle. The heat insulation effect is enhanced by the air layer.
In step S30, processing at power-on, that is, initialization processing is executed. In step S31, the screen curtain 15 of the main screen device 10 is fully closed, and then the screen curtain 25 of the backup screen device 20 is fully closed. This is because an air layer is formed between the two open / close members and the heat insulating effect is enhanced by the air layer.
In step S32, the timer T0 starts counting.

In step S33, it is determined whether or not the time measured by the timer T0 is greater than 5 minutes. If it is greater than 5 minutes (yes), the process proceeds to step S34, and if not (no), the process proceeds to step S36.
In step S34, it is determined whether or not the screen curtain 25 of the backup screen device 20 is in the fully closed state. If the screen curtain 25 is in the fully closed state (yes), the process proceeds to step S36, and if it is not in the fully closed state (no), Proceed to step S35.
In step S35, since the screen curtain 25 of the backup screen device 20 is not in the fully closed state, the screen curtain 25 is set in the fully closed state and stopped in that state. That is, in step S33 to step S35, the screen curtain 25 of the backup screen device 20 is operated to be fully closed after 5 minutes have elapsed from the time when the timer T0 starts to time.

In step S36, it is determined whether or not the time measured by the timer T0 is greater than 30 minutes. If it is 30 minutes or less (no), the process proceeds to step S37. If it is greater than 30 minutes (yes), the process proceeds to step S341. The 30 minutes here is an example, and can be arbitrarily set within a range of 20 to 40 minutes. Moreover, when the temperature in a freezer is low, it is preferable to set the time according to it suitably.
In step S37, it is determined whether or not any switch input of the operation switch 41 or 42 is present. If the input is present (yes), the process proceeds to step S38. If the input is not present (no), the process returns to step S33.

In step S38, since there is any switch input of the operation switch 41 or 42, it is determined whether or not the screen curtain 25 of the backup screen device 20 is in a fully open state, and if it is in a fully open state (yes). The process proceeds to step S40, and if not fully open (no), the process proceeds to step S39.
In step S39, since it is determined that the screen curtain 25 of the backup screen device 20 is not fully opened, the screen curtain 25 of the backup screen device 20 is fully opened.
In step S40, the normal opening / closing process of the screen curtain 15 of the main screen device 10 is performed in response to the switch input of either the previous operation switch 41 or 42. In this normal opening / closing process, the screen curtain 15 of the main screen device 10 is fully opened, and the screen curtain 15 of the main screen device 10 is fully closed several seconds later (for example, 2 to 3 seconds later).

In step S41, one opening / closing operation is executed as the defrosting operation of the main screen device 10.
In step S42, after the defrosting operation of the main screen device 10 in the previous step S41 is completed, one opening / closing operation is executed as the defrosting operation of the backup screen device 20. The defrosting operation in step S41 and step S42 is performed every time set in step S36. That is, the set time in step S36 is the time for the defrosting operation. Here, one opening / closing operation in the defrosting operation is a series of opening / closing processes in which the screen curtain 15 or 25 of the main screen device 10 or the backup screen device 20 is fully opened and then fully closed. During the defrosting operation of the main screen device 10, the heater 19 is kept warm, and during the defrosting operation of the backup screen device 20, the heater 29 is kept warm.
In step S43, the timer T0 is reset, and the process returns to step S32.

In the above-described embodiment, the defrosting operation of the backup screen device 20 in step S42 is performed after the defrosting operation of the main screen device 10 in step S41, but this is performed by replacing step S41 and step S42. After the 20 defrosting operation, the defrosting operation of the main screen device 10 may be executed.
In the above-described embodiment, the case where the heaters 19 and 29 are switched and operated during the defrosting operation of the main screen device 10 and during the defrosting operation of the backup screen device 20 has been described, but simultaneously according to any one operation. You may make it heat-retain. Further, the heat insulation by the heaters 19 and 29 may be performed immediately before the defrosting operation in steps S41 and S42.

  FIG. 5 is a view showing a modification of the roll screen device of FIG. In FIG. 5, since the same code | symbol is attached | subjected to the thing of the same structure as FIG. 2, the description is abbreviate | omitted. In the above-described embodiment, the main screen device 10 and the backup screen device 20 are arranged so as to be line-symmetric with respect to the intermediate air layer as shown in FIG. 2, but this is shown in FIG. In addition, the backup screen device 20 may be arranged so that the winding shaft 24 side is closer to the front chamber side, that is, farther from the freezer side. This is to keep the electric motor inserted in the hollow portion of the hollow pipe of the winding shaft 24 away from the cold air in the freezer.

In the above-described embodiment, a freezer having a temperature lower than that of the front chamber has been described as an example. However, when the main screen device 10 and the backup screen device 20 are provided in a high temperature chamber having a temperature higher than that of the front chamber, the shutter control in FIG. By omitting the defrosting process of step S41 and step S42 in the process, the same shutter control process can be used.
In the above-described embodiment, the case where the main screen device 10 and the backup screen device 20 are provided between the front chamber of −25 freezer −5 [° C.] has been described, but the opening serving as the entrance to the front chamber The same main screen device 10 and backup screen device 20 may be installed in the section.

In the above-described embodiment, the case where the main screen device 10 and the backup screen device 20 are alternately controlled by the single control device 30 has been described. However, the main screen device 10 and the backup screen device 20 are provided with separate control devices. Each control device may be controlled independently or cooperatively.
In the above-described embodiment, the screen curtain that is extended by the up-and-down lifting method is described as an example, but the same applies even if the opening and closing member is extended by the horizontal pulling method or by the horizontal method. be able to.

DESCRIPTION OF SYMBOLS 10 ... Main screen apparatus 11, 21 ... Storage box 12, 13, 22, 23 ... Guide rail 14, 24 ... Winding shaft 15, 25 ... Screen curtain 16, 26 ... Weight bar 17, 27 ... Electric motor 18, 28 ... Limit switch 19, 29 ... Heater 20 ... Backup screen device 30 ... Control device 31 ... Control circuit 32 ... Inverter circuit 33 ... Heater circuit 34, 35 ... Switching circuit 40 ... External power supply 41, 42 ... Operation switch

Claims (12)

A compartment configured to maintain a temperature difference between the exterior and interior;
First opening / closing body means for partitioning the opening by opening / closing the first opening / closing member from the peripheral edge of the opening serving as the entrance to the compartment;
Than said first opening and closing body means is provided in the compartment side, the first opening and closing member first closing portion and the second from the periphery of the opening portion to a predetermined distance from the material of the means A second opening / closing body means for opening and closing the opening / closing member to partition the opening;
First operating means provided outside the compartment for instructing an opening operation of the first and second opening / closing body means;
A second operator means provided in the compartment for instructing an opening operation of the first and second opening / closing body means;
The first or in response to opening operation of the instruction from the second operator means, a control means for controlling the opening and closing operation of the front Symbol first and second opening and closing body means,
The movement speed during the opening / closing operation of the second opening / closing body means is about 30 to 70% of the movement speed during the opening / closing operation of the first opening / closing body means,
When entering and exiting the compartment, the use frequency of the opening / closing operation of the first opening / closing member means is controlled to be higher than the use frequency of the opening / closing operation of the second opening / closing member means,
In response to an opening operation instruction from the first or second operator means, the second opening / closing body means is opened first, and after the second opening / closing body means is fully opened, the first opening / closing body means is stopped. An opening operation of the opening / closing member means and a closing operation after a few seconds have elapsed, and until the first opening / closing member means has passed a few minutes as a first time after the fully closed stop, the first or second In response to the opening operation instruction from the operator means, the opening operation of the first opening / closing body means and the closing operation after several seconds have been repeatedly executed, and the first opening / closing body means is further stopped after being fully closed. When the first time has elapsed, the second opening / closing body means is fully closed.
When the second time sufficiently larger than the first time has elapsed after the first opening / closing member means has been fully closed, the defrosting operation of the first or second opening / closing member means is performed, and thereafter opening and closing operations of the first and second opening and closing body means as by the child perform a defrosting operation for said first or second opening and closing body means the defrosting operation unexecuted, to suppress the energy loss due to the temperature difference Control means for controlling
Closing member apparatus comprising the.   The opening / closing body apparatus of Claim 1 WHEREIN: The said compartment is comprised by the refrigerator, the freezer, or the refrigerator. The opening / closing body apparatus characterized by the above-mentioned.   3. The opening / closing body device according to claim 1, wherein the control means executes only one of the opening / closing operations for the first and second opening / closing means, and does not execute the opening / closing operation at the same time. Opening and closing body device.   3. The opening / closing body device according to claim 1 or 2, wherein the control means switches the signal transmission means to the first and second opening / closing body means to control its opening / closing operation. . The opening / closing body device according to any one of claims 1 to 4 , wherein the first and second opening / closing body means have one end wound around a winding shaft, and depending on the winding state. A sheet-like curtain means whose other end portion moves to open and close the opening, and a storage means for the curtain means configured to hold the winding shaft rotatably and allow the curtain means to enter and exit from a slit-shaped entrance / exit And an opening / closing body device comprising guide means for guiding both end portions of the curtain means. The opening / closing body device according to any one of claims 1 to 5, wherein the room temperature is higher than the compartment composed of a refrigerator, a freezer or a refrigerator, and the room temperature is set lower than the outside. When the chamber is provided so as to be adjacent to each other through the opening, the opening / closing body device according to any one of claims 1 to 5 is provided at a peripheral portion of the opening serving as an entrance to the front chamber. An opening / closing body device comprising the opening / closing body device. A first opening / closing member is provided to partition the opening by opening and closing the first opening / closing member from the peripheral edge of the opening serving as the entrance / exit of the compartment configured to maintain a temperature difference between the outside and the inside. One opening / closing body means and the opening portion on the compartment side of the first opening / closing body means and at a predetermined interval with respect to the first opening / closing member of the first opening / closing body means The opening / closing operation with the second opening / closing body means provided so as to partition the opening by opening / closing the second opening / closing member from the peripheral portion of the first or the second provided respectively inside or outside the compartment An opening / closing body control method for controlling in accordance with an instruction of an opening operation from the operator means of 2 ,
The movement speed during the opening / closing operation of the second opening / closing body means is about 30 to 70% of the movement speed during the opening / closing operation of the first opening / closing body means,
When entering and exiting the compartment, the use frequency of the opening / closing operation of the first opening / closing member means is controlled to be higher than the use frequency of the opening / closing operation of the second opening / closing member means,
In response to an opening operation instruction from the first or second operator means, the second opening / closing body means is opened first, and after the second opening / closing body means is fully opened, the first opening / closing body means is stopped. An opening operation of the opening / closing member means and a closing operation after a few seconds have elapsed, and until the first opening / closing member means has passed a few minutes as a first time after the fully closed stop, the first or second In response to the opening operation instruction from the operator means, the opening operation of the first opening / closing body means and the closing operation after several seconds have been repeatedly executed, and the first opening / closing body means is further stopped after being fully closed. When the first time has elapsed, the second opening / closing body means is fully closed.
When the second time sufficiently larger than the first time has elapsed after the first opening / closing member means has been fully closed, the defrosting operation of the first or second opening / closing member means is performed, and thereafter opening and closing operations of the first and second opening and closing body means so by performing a defrosting operation for said first or second opening and closing body means the defrosting operation unexecuted, to suppress the energy loss due to pre SL temperature difference opening and closing member control method characterized by control the. The opening / closing body control method according to claim 7 , wherein the compartment is configured by a refrigerator, a freezer, or a refrigerator. 9. The opening / closing body control method according to claim 7 or 8 , wherein only one of the first and second opening / closing body means is opened and closed, and the opening / closing operation is not performed at the same time. Method. In closing body apparatus according to claim 7 or 8, opening and closing member control method characterized by controlling the opening and closing operation by switching the signal transmitting means to said first and second opening and closing body means. In opening and closing member control method according to any one of claims 7 to 10, wherein the first and second opening and closing body means, one end portion is wound around the winding shaft, depending on the winding state The sheet-like curtain means whose other end moves to open and close the opening, and storage of the curtain means configured to hold the winding shaft rotatably and allow the curtain means to enter and exit from a slit-shaped entrance / exit An opening / closing body control method comprising: means and guide means for guiding both end portions of the curtain means. In opening and closing member control method according to any one of claims 7 to 11, a refrigerator, high room temperature than the compartments that are configured in the freezer or refrigerator, room temperature than the outside is set low When the front chamber is provided so as to be adjacent to each other through the opening, the device according to any one of claims 7 to 9 is an opening that serves as an entrance to the front chamber. The opening / closing body control method characterized by being provided in the peripheral part of the part.

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