JP6176304B2 - Outlet, cover plate thereof and refrigerant detection device, and environmental monitoring system including outlet or refrigerant detection device - Google Patents

Description

  The present invention relates to an outlet, its cover plate, a refrigerant detection device, and an environmental monitoring system including the outlet or the refrigerant detection device.

  Conventionally, for an electric device installed in a state where it is always connected to a power source such as a refrigerator, a ventilation fan, an air conditioner, a television or a facsimile, a power source branched in a circuit from the external power source to the internal power circuit of the electric device In addition, there is known a security system that includes a gas leak detector and directly connects a control unit that outputs a control signal according to a detection signal of the detector to share a power source (see, for example, Patent Document 1).

Japanese Patent No. 3609280

  As described above, the conventional security system disclosed in Patent Document 1 may cause a gas leak by providing a gas leak detector (sensor) in an electric device such as a refrigerator generally in a room. The state of the indoor environment can be monitored.

  However, the gas leak detector (sensor) needs an electrical contact for supplying power to the detector or for outputting a detection signal from the detector. And this electrical contact will exist in the electric equipment with which the said detector is equipped, and will necessarily exist in the room | chamber in which the electric equipment was installed. For this reason, if a gas such as a refrigerant leaks into the room, the leaked gas may come into contact with the electrical contact of the detector in the room.

  The present invention has been made to solve such a problem. The sensor can detect refrigerant leakage, and the leaked refrigerant and the electrical contact of the sensor for detecting refrigerant leakage are indoors. It is an object of the present invention to obtain an outlet capable of preventing contact, a cover plate thereof and a refrigerant detection device, and an environmental monitoring system including the outlet or the refrigerant detection device.

  In the outlet according to the present invention, the outlet block provided inside the embedded box and provided with an insertion port into which the plug blade of the plug is inserted, and provided on the front surface of the embedded box, the outlet block is inserted. A cover plate in which the outlet insertion hole is formed, and a sensor that is provided in the embedded box and outputs a detection signal according to the concentration of the refrigerant, the cover plate includes the outlet insertion hole Separately, a sensor through-hole penetrating the front side and the back side of the cover plate is formed.

  In the outlet cover plate according to the present invention, the outlet block provided with the insertion port into which the plug blade of the plug is inserted is inserted into the outlet block for exposing the insertion port of the outlet block to the front side. A structure in which a through hole for a sensor that penetrates the front side and the back side separately from the outlet insertion hole is formed at a position facing the hole and a sensor that is arranged on the back side and outputs a detection signal corresponding to the concentration of the refrigerant And

  Alternatively, in the refrigerant detection device according to the present invention, the cover plate provided on the wall surface, floor surface or ceiling surface in the room where the indoor unit of the air conditioner is installed, the front side facing the internal space of the room And a sensor that is provided on the back side of the cover plate and outputs a detection signal corresponding to the concentration of the refrigerant, and the cover plate has a through-hole penetrating the front side and the back side of the cover plate. The configuration.

  In the environmental monitoring system according to the present invention, the outlet having the above-described configuration provided on the wall surface, floor surface or ceiling surface in the room where the indoor unit of the air conditioner is installed, or as described above The indoor unit is configured to drive a fan of the indoor unit according to a detection signal from the sensor.

  In the outlet according to the present invention, the cover plate and the refrigerant detection device, and the environmental monitoring system including the outlet or the refrigerant detection device, the refrigerant can be detected by the sensor, and the leaked refrigerant and the refrigerant leakage are detected. There is an effect that it is possible to prevent the electrical contact of the sensor for detection from coming into contact with the room.

It is a figure which shows typically the structure of the room where the environmental monitoring system provided with the electrical outlet which concerns on Embodiment 1 of this invention was applied. It is a front view of the outlet socket according to Embodiment 1 of the present invention. It is a front view of the cover plate of the outlet according to Embodiment 1 of the present invention. It is a front view of the plate base part of the outlet socket according to Embodiment 1 of the present invention. It is the front view and side view which show the state which removed the cover plate and plate base part of the outlet socket which concern on Embodiment 1 of this invention. It is the front view and side view of an outlet part of an outlet socket concerning Embodiment 1 of this invention. It is a front view of the switch plate concerning Embodiment 2 of this invention. It is a front view which shows the state which removed the cover plate of the switch plate concerning Embodiment 2 of this invention. It is a figure which shows the state which decomposed | disassembled the switch main body of the switch plate concerning Embodiment 2 of this invention. It is a front view which shows the other example of the cover plate of the switch plate which concerns on Embodiment 2 of this invention. It is a front view which shows the other example of the cover plate of the switch plate which concerns on Embodiment 2 of this invention. It is a front view which shows the other example of the cover plate of the switch plate which concerns on Embodiment 2 of this invention. It is a front view which shows the other example of the cover plate of the switch plate which concerns on Embodiment 2 of this invention. It is a front view which shows the other example of the cover plate of the switch plate which concerns on Embodiment 2 of this invention. It is a front view which shows the other example of the cover plate of the switch plate which concerns on Embodiment 2 of this invention.

  DESCRIPTION OF EMBODIMENTS Embodiments of the present invention will be described with reference to the accompanying drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals, and overlapping descriptions are simplified or omitted as appropriate. The present invention is not limited to the following embodiments, and various modifications can be made without departing from the spirit of the present invention.

Embodiment 1 FIG.
1 to 6 relate to Embodiment 1 of the present invention. FIG. 1 is a diagram schematically showing the configuration of a room to which an environmental monitoring system having an outlet is applied, and FIG. 2 is a front view of the outlet. 3 is a front view of the cover plate of the outlet, FIG. 4 is a front view of the plate base portion of the outlet, FIG. 5 is a front view and a side view showing the state in which the cover plate and the plate base portion of the outlet are removed, and FIG. It is the front view and side view of an outlet part of an outlet.

  As shown in FIG. 1, an outdoor unit 20 and an indoor unit 30 of an air conditioner are installed in a room 10 to which an environment monitoring system including an outlet according to Embodiment 1 of the present invention is applied. The outdoor unit 20 is installed outside the outer wall 11 of the room 10. The indoor unit 30 is fixed at a position near the upper side of the inner wall 12 of the room 10, for example. As described above, the indoor unit 30 is installed in the room 10 to be air-conditioned, and the outdoor unit 20 is installed outside the room.

  The outdoor unit 20 includes an outdoor unit heat exchanger 21, an outdoor unit fan 22, and a compressor 23. The indoor unit 30 includes an indoor unit heat exchanger 31 and an indoor unit fan 32. The indoor unit 30 and the outdoor unit 20 are connected by a refrigerant pipe 40. The refrigerant pipe 40 is circulated between the indoor unit heat exchanger 31 and the outdoor unit heat exchanger 21. A refrigerant is sealed in the refrigerant pipe 40.

  From the viewpoint of protecting the global environment, it is desirable to use a refrigerant with a small global warming potential (GWP) as the refrigerant sealed in the refrigerant pipe 40. Moreover, the refrigerant | coolant enclosed in the refrigerant | coolant piping 40 is a combustible gas. This refrigerant has an average molecular weight greater than that of air (specific gravity with respect to air is greater than 1), and has the property of sinking downward in the direction of gravity in air.

  Specific examples of such a refrigerant include difluoromethane (CH2F2: R32), tetrafluoropropane (CF3CF = CH2: HFO-1234yf), propane (R290), propylene (R1270), ethane (R170), and butane (R600). ), Isobutane (R600a), 1.1.1.2-tetrafluoroethane (C2H2F4: R134a), pentafluoroethane (C2HF5: R125), 1.3.3.3-tetrafluoro-1-propene (CF3- (CH = CHF: HFO-1234ze) etc. (mixed) refrigerant | coolant which consists of 1 or more refrigerant | coolants chosen from etc. can be used.

  The compressor 23 is provided on one side of the refrigerant circulation path between the indoor unit heat exchanger 31 and the outdoor unit heat exchanger 21. The compressor 23 is a device that compresses the supplied refrigerant and increases the pressure and temperature of the refrigerant. Although not shown here, an expansion valve is provided on the other side of the circulation path. The expansion valve expands the flowing refrigerant and reduces the pressure of the refrigerant. And the circulation path of the refrigerant | coolant formed with the refrigerant | coolant piping 40, and the indoor unit heat exchanger 31, the outdoor unit heat exchanger 21, the four-way valve, the compressor 23, and expansion connected to the said circulation path by the refrigerant | coolant piping 40. The valve constitutes a refrigeration cycle (refrigerant circuit).

  The refrigeration cycle configured as described above performs heat exchange between the refrigerant and the air in each of the indoor unit heat exchanger 31 and the outdoor unit heat exchanger 21, and thereby between the indoor unit 30 and the outdoor unit 20. It works as a heat pump that transfers heat. At this time, by switching the four-way valve, it is possible to reverse the refrigerant circulation direction in the refrigeration cycle and switch between the cooling operation and the heating operation.

  An outlet 100 is installed on the wall surface, floor surface or ceiling surface in the room 10 where the indoor unit 30 of the air conditioner is installed. Here, the outlet 100 is arranged at a position below the inner wall 12 of the room 10, for example. The outlet 100 is installed between the inner wall 12 and the outer wall 11 of the room 10. At this time, the front surface of the outlet 100 is exposed to the inside of the room 10, that is, the internal space.

  FIG. 2 is a front view of the outlet 100 viewed from the inside of the room 10. As shown in FIG. 2, the outlet 100 includes a cover plate 110, a plate base portion 120, and an outlet body 130. In this specification, the side of the cover plate 110 facing the room 10 is the front side, and the opposite side of the front side is the back side.

  The cover plate 110 has a configuration as shown in FIG. That is, the cover plate 110 is formed with an outlet insertion hole 111 and a sensor through hole 112. The outlet insertion hole 111 is provided corresponding to the outlet main body 130. The sensor through-hole 112 is provided corresponding to a sensor 150 described later. Each of the outlet insertion hole 111 and the sensor through hole 112 passes through the front side and the back side of the cover plate 110.

  As shown in FIG. 4, the plate base portion 120 is a frame-like member having a base portion through-hole 121 formed at the center. Base portion mounting holes 122 are formed in the upper side portion and the lower side portion of the frame of the plate base portion 120, respectively.

  When the cover plate 110 and the plate base portion 120 are removed from the outlet 100 in the state shown in FIG. 2, the state shown in FIG. 5 is obtained. As shown in FIG. 5, the outlet 100 includes an embedded box 140. The embedding box 140 is, for example, a metal box. An outlet body 130 and a sensor 150 are accommodated inside the embedded box 140.

  As shown in FIG. 6, the outlet body 130 includes an outlet block 131 and a mounting frame 133. An insertion port 132 is formed on the front surface of the outlet block 131. The insertion port 132 is an opening into which a pair of plug blades provided on the plug are inserted. A blade receiving portion (not shown) that is in electrical contact with the plug blade of the plug is provided inside the insertion port 132.

  The attachment frame 133 is a metal member for supporting the outlet block 131. An outlet mounting hole 134 is formed in the mounting frame 133. Then, the outlet main body 130 is attached in a state of being held at an appropriate position in the embedded box 140 by using a screw or the like passed through the outlet attachment hole 134. An outlet power supply line 135 is connected to the back side of the outlet block 131. The outlet power supply line 135 is electrically connected to the blade receiving portion in the outlet block 131.

  The sensor 150 housed in the embedded box 140 outputs a detection signal corresponding to the concentration of the same type of refrigerant as that enclosed in the refrigerant pipe 40. Specifically, for example, the sensor 150 outputs a detection signal having a voltage proportional to the refrigerant concentration. Alternatively, the sensor 150 outputs a detection signal when the refrigerant concentration is equal to or higher than a predetermined reference value. A sensor output wiring 151 for outputting such a detection signal is connected to the sensor 150.

  As described above, in the example described here, the outlet 100 is provided on the inner wall 12 of the room 10. Therefore, here, an opening corresponding to the size of the outlet 100 is formed in the inner wall 12. And in this opening part, the embedding box 140 which accommodated the outlet main body 130 and the sensor 150 which were comprised as mentioned above is embedded between the inner wall 12 and the outer wall 11 of the room 10. FIG.

  A plate base 120 is attached to the front side of the embedding box 140. At this time, the outlet 100 is fixed to the inner wall 12 by sandwiching the inner wall 12 between the embedding box 140 and the plate base 120. The cover plate 110 is attached to the front surface of the embedded box 140, more specifically, to the front side of the plate base portion 120 attached to the front surface of the embedded box 140.

  Here, the outlet insertion hole 111 of the cover plate 110 is formed in the same shape as the outer shape of the front side of the outlet block 131 of the outlet body 130. Then, by inserting the outlet block 131 into the outlet insertion hole 111, the insertion port 132 formed on the front surface of the outlet block 131 is exposed to the front side of the cover plate 110 as shown in FIG.

  As described above, the sensor plate through-hole 112 is formed in the cover plate 110 in addition to the outlet insertion hole 111. Then, in a state where the cover plate 110 is attached to the outlet 100 (FIG. 2), the sensor through hole 112 is disposed at a position facing the sensor 150 disposed on the back side of the cover plate 110.

  The sensor through hole 112 is formed so that the width along at least one direction is equal to or less than the flame extinguishing distance. In the example described in the first embodiment, as shown in FIGS. 2 and 3, the sensor through-hole 112 is constituted by a plurality of slit-shaped openings. And it forms so that the width | variety D of each slit may be below a flame extinction distance.

  Here, the extinguishing distance is the following distance. That is, when two flat plates are opposed to each other and a hole (slit) is formed, if the distance between the opposed flat plates is short, the flame cannot pass between these flat plates. The maximum distance between the flat plates where the flame cannot pass through the slits between the flat plates is referred to as the extinguishing distance. The extinguishing distance is an amount determined in relation to the heat generation rate of the flame. The heat generation rate of the flame differs depending on the type of gas to be burned, here, the refrigerant. For this reason, the extinguishing distance also varies depending on the type of refrigerant. Here, the extinction distance serving as a reference for the width D of each slit of the sensor through-hole 112 is the extinction distance of the refrigerant whose concentration is to be detected by the sensor 150.

  In the outlet 100 and the cover plate 110 configured as described above, the sensor 150 for detecting the refrigerant concentration is accommodated in the embedded box 140, and the sensor 150 is disposed on the back side of the cover plate 110. For this reason, the sensor 150 is arranged outside the inner wall surface of the room 10, that is, outside the internal space of the room 10. That is, an electrical contact for supplying power to the sensor 150 or outputting a detection signal from the sensor 150 is disposed outside the internal space of the room 10.

  Therefore, it is possible to prevent the refrigerant leaking from the indoor unit 30 and the electrical contact of the sensor 150 from contacting each other in the internal space of the room 10. Further, by providing the sensor through-hole 112 in the cover plate 110 in addition to the outlet insertion hole 111, the sensor 150 and the electrical contact related to the sensor 150 are arranged outside the internal space of the room 10 in this way, It can be detected that the refrigerant has leaked from the machine 30 into the internal space of the room 10.

  Further, by setting the width D along at least one direction of the sensor through-hole 112 to be equal to or less than the flame extinguishing distance of the refrigerant, even if a flame is generated due to contact between the leaked refrigerant and the electrical contact of the sensor 150, The generated flame does not exit from the sensor through hole 112 to the front side of the cover plate 110. That is, the flame is sealed in the embedding box 140 on the back side of the cover plate 110, and even in the unlikely event, the flame can be prevented from entering the internal space of the room 10.

  In addition, by providing the sensor 150 so that the refrigerant can be detected in the outlet 100 provided in the room 10, the following two effects can be achieved. The first effect is that since the sensor 150 is provided in the outlet 100, the processing work of the wall surface and the like necessary for the installation of the sensor 150 and the members such as the cover plate 110 and the embedding box 140 are made common with the outlet 100. This means that it is possible to save labor and members necessary for installation. The second effect is that the outlet 100 is generally arranged near the lower side of the wall surface of the room 10. For this reason, especially when the specific gravity of the refrigerant with respect to the air is greater than 1, the refrigerant leaking into the room 10 flows vertically downward, so that the refrigerant easily reaches the position of the outlet 100, and the sensor 150 provided in the outlet 100 at an early stage. This means that the refrigerant can be detected.

  In addition, the sensor output wiring 151 of the sensor 150 included in the outlet 100 configured as described above is connected to the indoor unit 30 as shown in FIG. The sensor output wiring 151 from the outlet 100 to the indoor unit 30 is disposed, for example, between the inner wall 12 and the outer wall 11 of the room 10.

  And the indoor unit 30 drives the indoor unit fan 32 according to the detection signal from the sensor 150 input via the sensor output wiring 151. Specifically, the indoor unit 30 drives the indoor unit fan 32 when the detection signal from the sensor 150 indicates the occurrence of refrigerant leakage. In particular, as described above, when the specific gravity of the refrigerant with respect to the air is greater than 1, the refrigerant leaking into the room 10 is accumulated vertically downward, and a portion having a high refrigerant concentration is likely to occur.

  Therefore, in the environmental monitoring system including the outlet according to the first embodiment of the present invention, the indoor unit fan 32 is driven according to the detection signal from the sensor 150 to generate an air flow in the room 10. Thus, it is possible to prevent the refrigerant from staying and generating a portion having a high concentration.

  Here, the case where the detection signal from the sensor 150 indicates the detection of the occurrence of refrigerant leakage is specifically, for example, if the sensor 150 outputs a detection signal having a voltage proportional to the refrigerant concentration, This corresponds to the case where the voltage is higher than the set reference value. Alternatively, if the detection signal is output from the sensor 150 when the concentration of the refrigerant is equal to or higher than a predetermined reference value, the detection signal from the sensor 150 may indicate that the detection signal from the sensor 150 is output. This corresponds to the case where leak detection is indicated.

  Note that it is desirable that the power source for driving the indoor unit 30 during normal operation and the power source for driving the indoor unit fan 32 based on the detection signal of the sensor 150 be separate systems. By providing these power sources as separate systems, even when the power source for driving the indoor unit 30 is shut off from the viewpoint of energy saving or the like, the indoor unit can be detected when the refrigerant leak is detected by the sensor 150. The fan 32 can be driven.

  In addition, when the specific gravity of the refrigerant with respect to the air is greater than 1, the leaked refrigerant flows downward from the indoor unit 30, and therefore the outlet 100 provided with the sensor 150 is disposed vertically below the indoor unit 30. It is desirable.

  In the above description, an example in which the refrigeration cycle apparatus to which the environment monitoring system according to the present invention is applied is an air conditioner has been described. However, the refrigeration cycle apparatus to which the environment monitoring system according to the present invention is applied is not limited to an air conditioner. Any apparatus provided with a refrigeration cycle that uses an enclosed refrigerant can be used. For example, a water heater, a showcase, a refrigerator, or the like may be used.

  In addition to driving the indoor unit fan 32 according to the detection signal from the sensor 150, for example, a ventilation system such as a ventilation fan provided in the room 10 is driven, or a window provided in the room 10 is opened. You may make it open.

  In the above, the case where the outlet body 130 and the sensor 150 for detecting the refrigerant are provided in the embedded box 140 has been described. However, from the viewpoint of detecting the refrigerant, a configuration of a refrigerant detection device in which only the sensor 150 is provided in the embedded box 140 without providing the outlet main body 130 in the embedded box 140 may be employed. In the refrigerant detection device in this case, the outlet main body 130 does not exist in the embedded box 140, and the outlet insertion hole 111 is not formed in the cover plate 110.

  The refrigerant detection device having this configuration includes at least a cover plate 110 and a sensor 150. The cover plate 110 of the refrigerant detection device is provided on the wall surface, floor surface, or ceiling surface in the room 10 where the indoor unit 30 of the air conditioner is installed, and the front side faces the internal space of the room 10. The sensor 150 of the refrigerant detection device is provided on the back side of the cover plate 110. The sensor 150 outputs a detection signal corresponding to the refrigerant concentration.

  The cover plate 110 is formed with a through hole penetrating the front side and the back side of the cover plate 110. This through hole corresponds to the sensor through hole 112 of the outlet 100. The through hole is preferably arranged at a position facing the sensor 150 arranged on the back side of the cover plate 110. Furthermore, the through hole is formed so that the width along at least one direction is equal to or less than the flame extinguishing distance.

  In the refrigerant detection device configured as described above, the sensor 150 for detecting the refrigerant concentration is accommodated in the embedded box 140, and the sensor 150 is disposed on the back side of the cover plate 110. For this reason, as in the case of the outlet 100 described above, the sensor 150 is disposed outside the inner wall surface of the room 10, that is, outside the internal space of the room 10. That is, an electrical contact for supplying power to the sensor 150 or outputting a detection signal from the sensor 150 is disposed outside the internal space of the room 10.

  Therefore, it is possible to prevent the refrigerant leaking from the indoor unit 30 and the electrical contact of the sensor 150 from contacting each other in the internal space of the room 10. Further, by providing the sensor through-hole 112 in the cover plate 110 in addition to the outlet insertion hole 111, the sensor 150 and the electrical contact related to the sensor 150 are arranged outside the internal space of the room 10 in this way, It can be detected that the refrigerant has leaked from the machine 30 into the internal space of the room 10.

  Further, by setting the width D along at least one direction of the sensor through-hole 112 to be equal to or less than the flame extinguishing distance of the refrigerant, even if a flame is generated due to contact between the leaked refrigerant and the electrical contact of the sensor 150, The generated flame does not exit from the sensor through hole 112 to the front side of the cover plate 110. That is, the flame is sealed in the embedding box 140 on the back side of the cover plate 110, and even in the unlikely event, the flame can be prevented from entering the internal space of the room 10.

  Further, as in the case of the outlet 100 described above, the refrigerant detection device configured as described above is connected to the indoor unit 30 with the sensor output wiring 151 of the sensor 150, and an environmental monitoring system including the refrigerant detection device is configured. May be. Also in this environmental monitoring system, the indoor unit 30 drives the indoor unit fan 32 of the indoor unit 30 in accordance with the detection signal from the sensor 150, as in the refrigerant detection device including the outlet 100 described above. By doing in this way, it can prevent beforehand that a flow of air is generated inside room 10, and a refrigerant | coolant accumulates and a location with a high density | concentration arises.

Embodiment 2. FIG.
7 to 15 relate to a second embodiment of the present invention, FIG. 7 is a front view of the switch plate, FIG. 8 is a front view showing a state in which the cover plate of the switch plate is removed, and FIG. 9 is a switch plate. The figure which shows the state which decomposed | disassembled the switch main body of FIG. 10, FIG. 10 to FIG.

  In the first embodiment described above, the outlet is provided with a sensor for detecting the refrigerant. On the other hand, in the second embodiment described here, a sensor for detecting the refrigerant is provided on the switch plate.

  That is, in the second embodiment, the switch plate 200 is installed in the room where the indoor unit of the air conditioner, which is a refrigeration cycle apparatus, is installed as in the first embodiment. As in the case of the outlet of the first embodiment, the switch plate 200 is attached to the wall surface, floor surface or ceiling surface in the room.

  As shown in FIG. 7, the switch plate 200 includes various switches, here, for example, a dimming switch 211 and a timer switch 212. The dimming switch 211 is a switch that can turn on / off incandescent lamp illumination and adjust the brightness. The timer switch 212 is a switch that can be automatically turned off after a predetermined time has elapsed since the switch was turned on. When the front cover of the timer switch 212 is opened, a button or the like for setting the operation time of the timer is provided therein.

  The switch plate 200 includes a cover plate 110. The cover plate 110 is formed with a switch insertion hole for exposing the light control switch 211 and the timer switch 212 to the front side. Further, a sensor through hole 112 is also formed in the cover plate 110 in addition to the switch insertion hole.

  As shown in FIG. 8, the switch body 220 and the sensor 150 are accommodated on the back side of the cover plate 110. In the state of FIG. 7 in which the cover plate 110 is attached to the switch plate 200, the sensor through hole 112 is configured to be disposed at a position facing the sensor 150 disposed on the back side of the cover plate 110. .

As shown in FIG. 9, the switch body 220 includes a dimming switch body 222, a timer switch body 223, and a mounting frame 133. The attachment frame 133 is a metal member for supporting the dimming switch body 222 and the timer switch body 223. The dimming switch main body 222 and the timer switch main body 223 are fixed to the predetermined positions of the mounting frame 133, whereby the switch main body 220 shown in FIG.
Other configurations are the same as those in the first embodiment, and detailed description thereof is omitted.

  The switch plate, the cover plate, and the environment monitoring system configured as described above can achieve the same effects as the outlet, the cover plate, and the environment monitoring system of the first embodiment.

  Here, the shape of the sensor through hole 112 of the cover plate 110 provided in each of the outlet according to the first embodiment of the present invention and the switch plate according to the second embodiment described above will be supplementarily described. As described above, the sensor through-hole 112 is configured by one or a plurality of holes formed so that the width along at least one direction is equal to or less than the flame extinguishing distance. As an example of such a sensor through-hole 112, in FIGS. 2, 3 and 7, each of the slits is configured by a plurality of vertical slit-shaped holes formed so that the width D of each slit is equal to or less than the extinguishing distance. The case shown is shown.

  However, the form of the sensor through hole 112 formed of a group of holes whose width along at least one direction is equal to or less than the extinguishing distance is not limited to this example. Hereinafter, another example of the sensor through-hole 112 will be described with reference to FIGS. 10 to 15 by taking the cover plate 110 of the switch plate 200 of the second embodiment as an example. In addition, the other example of the form of the sensor through hole 112 can be similarly applied to the cover plate 110 of the outlet 100 of the first embodiment.

  First, the example shown in FIG. 10 is different from the examples shown in FIGS. 2, 3 and 7 in the direction of the slits. That is, in the example of FIG. 10, the sensor through-hole 112 is configured by a plurality of lateral slit-shaped holes formed so that the width D of each slit is equal to or less than the flame extinguishing distance.

  Next, in the example shown in FIG. 11, in the example shown in FIG. 10, the overall outer shape of the sensor through-hole 112 is made circular by changing the length of each of the plurality of horizontal slit-shaped holes. It is a thing.

  FIG. 12 is also an example in which a plurality of lateral slit-shaped holes are formed as in FIG. 11, and the outer shape of the entire sensor through hole 112 is circular. However, in the example shown in FIG. 12, the position where the sensor through hole 112 is arranged in the cover plate 110 is different from that in FIG.

  In the above example, the sensor through-hole 112 is arranged on the side of each switch or outlet block. For this reason, compared with the case where the sensor 150 and the through-hole 112 for sensors are not provided, the lateral width of the cover plate 110 becomes large. On the other hand, in the examples shown in FIGS. 13 to 15, the sensor through hole 112 is arranged below each switch or the outlet block so that the cover plate 110 according to the presence or absence of the sensor 150 and the sensor through hole 112 is provided. This is intended to suppress changes in the width of the.

  First, in the example shown in FIG. 13, a sensor through-hole 112 having the same shape as in FIGS. 11 and 12 is arranged below each switch. In the example shown in FIG. 14, the sensor through hole 112 is arranged at the same position as in FIG. 13, but the shape of the sensor through hole 112 is different. FIG. 14 shows an example in which the sensor through hole 112 is configured by providing a plurality of square holes each having a vertical width and a horizontal width of D. The vertical width D and the horizontal width D are set to be equal to or less than the flame extinguishing distance of the refrigerant.

  The example shown in FIG. 15 is an example in which the sensor through-hole 112 is configured by providing a plurality of circular holes having a diameter D. The diameter D is not more than the extinguishing distance of the refrigerant. As described above, for each of the holes constituting the sensor through-hole 112, the width along at least one direction may be equal to or less than the extinguishing distance, and the width along two or more directions is prevented from being equal to or less than the extinguishing distance. I can't.

  10 rooms, 11 outer wall, 12 inner wall, 20 outdoor unit, 21 outdoor unit heat exchanger, 22 outdoor unit fan, 23 compressor, 30 indoor unit, 31 indoor unit heat exchanger, 32 indoor unit fan, 40 refrigerant pipe, 100 Outlet, 110 Cover plate, 111 Outlet insertion hole, 112 Sensor through hole, 120 Plate base part, 121 Base part through hole, 122 Base part mounting hole, 130 Outlet body, 131 Outlet block, 132 Insertion port, 133 Mounting frame , 134 outlet mounting hole, 135 outlet feeding line, 140 embedded box, 150 sensor, 151 sensor output wiring, 200 switch plate, 211 dimming switch, 212 timer switch, 220 switch body, 222 Light control switch body, 223 Timer switch body

Claims (8)

An outlet block provided inside the embedding box and provided with an insertion port into which the plug blade of the plug is inserted;
A cover plate provided on the front surface of the embedded box and having an outlet insertion hole through which the outlet block is inserted;
A sensor provided in the embedded box and outputting a detection signal corresponding to the concentration of the refrigerant,
In addition to the outlet insertion hole, the cover plate is an outlet in which a sensor through-hole penetrating the front side and the back side of the cover plate is formed.   The outlet according to claim 1, wherein the sensor through-hole is formed so that a width along at least one direction is equal to or less than a flame extinguishing distance. An outlet insertion hole through which an outlet block provided with an insertion port into which the plug blade of the plug is inserted is inserted to expose the insertion port of the outlet block on the front side;
A cover plate for an outlet in which a sensor through-hole penetrating the front side and the back side is formed separately from the outlet insertion hole at a position opposed to a sensor arranged on the back side and outputting a detection signal corresponding to the refrigerant concentration. .   The cover plate for an outlet according to claim 3, wherein the sensor through-hole is formed so that a width along at least one direction is equal to or less than a flame extinguishing distance. A cover plate provided on the wall surface, floor surface or ceiling surface in the room where the indoor unit of the air conditioner is installed, the front side facing the internal space of the room;
A sensor provided on the back side of the cover plate and outputting a detection signal corresponding to the concentration of the refrigerant;
The refrigerant detection device, wherein the cover plate is formed with a through hole penetrating the front side and the back side of the cover plate.   The refrigerant detection device according to claim 5, wherein the through hole is formed such that a width along at least one direction is equal to or less than a flame extinguishing distance. The outlet according to claim 1 or 2 provided on the wall surface, floor surface or ceiling surface in the room where the indoor unit of the air conditioner is installed,
The indoor unit is an environment monitoring system in which a fan of the indoor unit is driven according to a detection signal from the sensor. The refrigerant detection device according to claim 5 or 6,
The indoor unit is an environment monitoring system in which a fan of the indoor unit is driven according to a detection signal from the sensor.

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