JP2005310877A - Electronic apparatus and power saving controller - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electronic apparatus for facilitating wiring operations and maintenance check on wirings. <P>SOLUTION: The electronic apparatus houses a printed circuit board, an external line terminal block, and a frame of reverse C cross section which is formed by the top and two side walls. The printed circuit board is suspended on the top of the frame, and the external line terminal block is fixed at a position opposite to the printed circuit board. The frame is separated by the two side walls into two, the upper part having the top for suspending the printed circuit board, and the lower part for supporting the upper part. One side wall of the upper part is attached to one side wall of the lower part to ensure that the upper part having the top part for suspending the printed circuit board is rotatable. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an electronic device and a power saving control device, and more particularly to an electronic device and a power saving control device having a structure that facilitates wiring work and is easy to handle.

  In many cases, the installation of a control device for controlling electrical equipment is performed at the customer site. In such a case, remove the cover (cover) and carefully check the terminal number of the connection terminal of the printed circuit board such as the control circuit board and the terminal number of the external terminal block, while Need to be connected to the terminal of the external terminal block. As a conventional example of a control device that allows easy wiring work and easy maintenance and inspection of wiring, the external circuit connection terminal block of the external circuit connection terminal block is arranged horizontally. The two external wire connection terminal blocks for the control circuit of the external wire connection terminal block are arranged in the vertical direction, and are connected to the external wire connection terminal block for the main circuit and the two external wire connection terminal blocks for the control circuit. An inverter device having a step is known (see Patent Document 1).

On the other hand, many power-saving control devices have been proposed that reduce power consumption for power consumption devices including compressors such as air conditioning equipment, refrigeration equipment, refrigeration equipment, and cooling equipment. For example, with the aim of achieving total energy savings in power consumption, it is possible to save power by providing a relay timer panel that is set to perform rank control by time difference control for air conditioning equipment, refrigeration equipment, motor equipment, and lighting equipment. A power-saving control device (refer to Patent Document 2) for reducing power consumption and contract power by connecting a control panel to a demand control device and performing power consumption schedule control and peak cut control, a cooling device provided in a refrigerator, etc. By controlling so that the motor for the cooler is not continuously operated, the power consumption is reduced, the power is saved, the operation time of the motor for the cooler is reduced, and the reliability of the life of the motor for the cooler is increased (Patent Document) 3), consumed by multiple power consuming devices such as air conditioning equipment, refrigeration equipment, prime mover equipment, lighting equipment, etc. A relay that ranks and controls the supply of power to the plurality of power consuming devices in response to a signal from the demand control device for the purpose of achieving overall power reduction and overall energy saving. And a power saving control device (see Patent Document 4) that includes a timer that controls supply of power to the plurality of power consuming devices at predetermined time intervals.
JP-A-5-62724 JP 2001-197661 A Japanese Patent Laid-Open No. 11-257821 JP 2003-23729 A

  In Patent Document 1, it is possible to prevent interference between a plurality of external terminal blocks, but there is room for further improvement such as a printed circuit board becoming an obstacle in actual wiring work. In Patent Documents 2 to 4, there is no specific disclosure or suggestion about the structure of the power saving control device. Accordingly, the present invention has been made in view of the above, and the problem to be solved by the present invention is to perform wiring work between a connection terminal of a printed circuit board such as a control circuit board and a terminal of an external terminal block. Another object of the present invention is to provide an electronic device and a power saving control device that can easily perform wiring work between an external electric wire and a terminal of an external terminal block, and that can easily perform maintenance and inspection of wiring.

  The object of the present invention is achieved by the following inventions. That is, the electronic device according to the first aspect includes a printed circuit board, an electric device outside the casing, and a casing formed from a casing and a lid fitted to the casing. And an external terminal block for electrically connecting a ceiling portion and a U-shaped pedestal formed by two side walls, and the printed circuit board is suspended on the ceiling portion of the pedestal, The external line terminal block is an electronic device arranged and fixed at a position facing the printed circuit board, and the mount includes an upper part having a ceiling part for suspending the printed circuit board and a lower part supporting the upper part The one side wall portion of the upper portion is divided into the other side portion of the lower portion so that the upper portion having a ceiling portion for suspending the printed circuit board is rotatable. Take on the side wall Characterized in that the girder structure. The electronic device described in Item 2 is the electronic device described in Item 1, wherein the printed circuit board is a control circuit board.

  The power saving control device according to claim 3, wherein the power saving control device is used in a power consuming device including a compressor, and the power saving control device is disposed in a casing formed from a casing and a lid fitted to the casing. Display means for displaying a numerical value relating to the amount of power used that has been reduced by use, a control circuit board for controlling the amount of power used by the power consuming apparatus, a power consuming apparatus comprising the control circuit board and the compressor And an external terminal block for electrical connection with the ceiling portion and a U-shaped frame-shaped frame formed by two side walls, the control circuit board is suspended on the ceiling of the frame, The external line terminal block is a power-saving control device arranged and fixed at a position facing the control circuit board, wherein the mount has an upper portion having a ceiling portion for suspending the control circuit board One of the side walls of the upper part is divided into the lower part supporting the upper part by the two side wall parts, and the upper part having a ceiling part for suspending the control circuit board is rotatable. It is characterized by the structure which attached the part to one side wall part of the said lower part.

  The power saving control device described in item 4 is the power saving control device described in item 3, characterized in that it is provided between the demand control device and a power consuming device comprising a compressor. The power saving control device according to claim 5 is the power saving control device according to claim 3 or 4, wherein the display means controls the operation of the compressor and a display that displays a cumulative total operating time of the compressor. It is a display device that displays the accumulated time. A power saving control device according to a sixth aspect is the power saving control device according to any one of the third to fifth aspects, wherein the display means is configured to be observable from the outside through the lid. The power saving control device according to claim 7 is the power saving control device according to claim 6, wherein the lid is made of a transparent material. The power saving control device described in item 8 is the power saving control device according to any one of items 3 to 7, wherein the power saving control device has a waterproof structure.

  An electronic device according to the present invention includes a U-shaped cross section formed by a ceiling portion and two side wall portions housed in a casing formed from a housing and a lid fitted to the housing. The upper part for suspending the printed circuit board and the lower part for supporting the upper part are divided by the two side walls, and the upper part for suspending the printed circuit board is rotatable. Since one side wall part of the upper part is attached to one side wall part of the lower part, wiring work between the connection terminal of the printed circuit board and the terminal of the external line terminal block and the external electric wire to the terminal of the external line terminal block Wiring work such as connection can be easily performed. In addition, there is an excellent effect that the maintenance and inspection of the wiring can be easily performed.

  The power-saving control device according to the present invention includes a U-shaped cross section formed by a ceiling portion and two side wall portions, which is housed in a casing formed from a housing and a lid fitted to the housing. The upper part that suspends the control circuit board for controlling the power consumption and the lower part that supports the upper part are divided by the two side walls, and the upper part that suspends the control circuit board is rotatable. In such a structure, one side wall portion of the upper portion is attached to one side wall portion of the lower portion. Since such a structure is adopted, connection of a control circuit board for controlling power consumption is achieved. Wiring work between the terminal and the terminal of the external line terminal block and wiring work such as connecting the external electric wire to the terminal of the external line terminal block can be easily performed. In addition, maintenance and inspection of wiring can be easily performed.

  The power saving control device of the present invention stores display means for displaying numerical values related to power consumption that can be reduced by using the power saving control device, and reduces the power consumption by adopting a structure in which the display means can be observed from the outside. The energy saving by can be confirmed at a glance. Furthermore, if the power saving control device of the present invention has a waterproof structure, it is possible to prevent rainwater and dust from entering from the outside and to avoid failures caused by these.

  Examples of the power consuming device provided with the compressor include air conditioning equipment such as air conditioning, refrigeration equipment, refrigeration equipment, cooling equipment, and the like. Moreover, a demand control apparatus can also be used for the power consumption apparatus provided with these compressors. In such a case, the power saving control device of the present invention is provided between the demand control device and the power consuming device including the compressor.

  The present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing a state in which a power-saving control device used in a power consuming device including a compressor according to an embodiment of the present invention is exposed. In FIG. 1, a housing 1 controls a display 3 that displays a cumulative total operating time of a compressor, a display 4 that displays a cumulative total of time during which compressor operation is controlled, and controls the amount of power consumed by a power consuming device. Control circuit board 5 (hereinafter, unless otherwise specified, a control circuit board that controls the amount of power consumed by the power consuming device is simply referred to as a control circuit board), an external terminal block 6, and a stand 7 are housed. . A display 3 for displaying the accumulated actual operation time of the compressor and a display 4 for displaying the accumulated time during which the operation of the compressor is controlled are fixed to the base 12 (see FIG. 3).

  The gantry 7 is formed by two side walls, a right side wall (consisting of a right side wall 71 and a right side wall 72) and a left side wall (consisting of a left side wall 74 and a left side wall 75), and a ceiling 73. It has a U-shaped cross section. The control circuit board 5 is suspended from the ceiling portion 73 via the four columns 14. Furthermore, the gantry 7 includes an upper portion (which includes a ceiling portion 73, a right side wall portion 72, and a left side wall portion 75, hereinafter referred to as an upper portion) having a ceiling portion 73 on which the control circuit board 5 is suspended, and an upper portion. Is divided into a lower part (which consists of a right side wall part 71 and a left side wall part 74, hereinafter referred to as a lower part). Since the upper left wall 75 having the ceiling 73 for suspending the control circuit board 5 is structured to be attached to the lower left wall 74 by two hinges 76, the control circuit board 5 is suspended. The upper part having the ceiling part 73 to be turned is rotatable. Further, the left side wall portion 74 of the lower portion is bent at the attachment portion 78 and fixed to the base 12 with the screws 16. Similarly, the right side wall 71 is also fixed to the base 12. The upper right side wall portion 72 having the ceiling portion 73 on which the control circuit board 5 is suspended is formed with an engaging portion 77 that engages with the lower right side wall portion 71.

  The height of the upper right wall portion 72 having the ceiling portion 73 on which the control circuit board 5 is suspended and the height of the left wall portion 75 are the same, and the height of the lower right wall portion 71 and the left wall portion 74 are the same. Are the same height. Materials for forming the gantry 7 include metals such as aluminum and stainless steel, general-purpose plastics such as polyethylene (PE), polystyrene (PS), ABS resin, polyamide (PA), polycarbonate (PC), polybutylene terephthalate (PBT), polyacetal. Engineering plastics such as can be used. From the viewpoint of ease of processing, aluminum is preferable. The gantry 7 has a structure divided into an upper part and a lower part, but the gantry formed by one member may be cut or formed, or the upper part and the lower part may be formed by separate members.

  In FIG. 1, for convenience of explanation, the gantry 7 for suspending the control circuit board 5 is opened by rotating the upper part having the ceiling portion 73 for suspending the control circuit board 5. When used as a power saving control device, the engaging portion 77 is engaged with the right side wall portion 71 and the upper portion having the ceiling portion 73 for suspending the control circuit board 5 is in a closed state. In such a state, the external terminal block 6 is arranged and fixed to the base 12 by the fixing portion 13 at a position facing the control circuit board 5. A display 3 for displaying the accumulated actual operation time of the compressor, a display 4 for displaying the accumulated time of controlling the operation of the compressor, a stand 7 for suspending the control circuit board 5 on the ceiling 73, and an external terminal block 6 The fixed base 12 is fixed to the bottom of the housing 1 with screws (not shown). The electric wire 11 connected to the control circuit board 5 is connected to one terminal of the external line terminal block 6. An external electric wire 15 connected to a power consuming device (not shown) provided with a compressor is connected to the other terminal of the external wire terminal block 6. When connecting the external electric wire 15 to the terminal of the external terminal block 6, an arbitrary one of the notches 8 provided on the side surface of the housing 1 is opened. It is preferable to wire the cutout portion 8 with a hole using a waterproof / dustproof connector. When connecting the external electric wires 16 to the terminals of the external terminal block 6, as shown in FIG. 1, the upper part having the ceiling 73 for suspending the control circuit board 5 is rotated and opened, so that the external terminal block This makes it easy to confirm the terminal number 6 and increases the efficiency of wiring work.

  FIG. 2 is a perspective view showing an appearance of the power saving control device according to the embodiment of the present invention. As shown in FIG. 2, the external appearance of the power saving control device I has a casing structure in which a lid 2 formed of a transparent member is fitted to a casing 1 having a plurality of notches 8. The control circuit board 5 is suspended from the ceiling portion 73 of the gantry 7 via the support column 14, and it is possible to observe a state in which the external line terminal block 6 is arranged and fixed at a position facing the control circuit board 5. Main materials for forming the housing 1 are general-purpose plastics such as polyethylene (PE), polystyrene (PS), and ABS resin, engineering plastics such as polyamide (PA), polycarbonate (PC), polybutylene terephthalate (PBT), and polyacetal. Can be used. Also, these plastic materials may be made opaque by mixing pigments or the like. The main material forming the housing 1 may be a metal such as aluminum or stainless steel. The lid 2 can observe the indicators 3 and 4 from the outside by using a transparent material. As the transparent material, a transparent plastic is preferable, and for example, an acrylic resin or a polycarbonate resin is used.

  The lid body 2 can be formed with a projecting end fitted to the housing 1 on the inner peripheral surface thereof, and a gasket can be provided in an annular groove formed along the projecting end. By providing the gasket, the power saving control device I can have a waterproof structure. The power saving control device of the present invention is preferably provided with a waterproof / dustproof measure, and particularly preferably at a level that satisfies the IP-65 protection class. The gasket material may be an O-ring or a gasket foam such as a silicone foam, but a gasket foam such as a silicone foam is preferred. As a method for producing a lid provided with a gasket, for example, an apparatus for producing a silicone foam described in JP-A-6-99509 can be used. The lid 2 may be formed using an opaque material. When an opaque material is used, the surface of the lid facing the indicators 3 and 4 is an opening, and a transparent plate formed of a transparent plastic such as polyamide is formed in the opening with a member having a waterproof function such as a gasket. It is preferable to interpose and mount. As another aspect, the lid can be provided with a display means for displaying a numerical value related to the amount of power used that can be reduced by using the power saving control device of the present invention. In this case, a display element using a 7-segment LED element can be used as the display means.

  FIG. 3 is a perspective view of another state in which the inside of the power saving control device according to the embodiment of the present invention is exposed. In FIG. 3, the terminal 10 of the control circuit board 5 is disposed in the vicinity of the center where the upper part having the ceiling 73 for suspending the control circuit board 5 is rotated, and the direction of the terminal of the external terminal block 6 is determined by the control circuit board. The external line terminal block 6 is arranged and fixed to the base 12 so as to be parallel to the terminal 10 of 5. By arranging the terminal 10 of the control circuit board 5 and the external terminal block 6 in this way, the electric wire 11 connected to the control circuit board 5 can be shortened, so that there is an advantage that the electric wires do not get entangled. . An external electric wire (not shown) is connected to the terminal of the external line terminal block 6 through a hole 79 formed in the right side wall portion 71 of the lower part of the gantry 7. As a display means for displaying a numerical value relating to the amount of power used that can be reduced by using the power saving control device of the present invention, in FIGS. 1 to 3, the display 3 for displaying the cumulative total operating time of the compressor and the operation of the compressor are shown. The display 4 which displays the total of the controlled time was illustrated. The power saving control device of the present invention can reduce the power consumed by the power consuming device including the compressor, achieve energy saving, and can confirm the energy saving by reducing the power consumption at a glance. Energy conservation by reducing power consumption is closely related to reducing carbon dioxide emissions, which contributes to cost reduction and prevention of global warming. Therefore, the numerical values related to the amount of power consumption that can be reduced by using the power-saving control device are the amount of reduction in power consumption, the reduction rate of power consumption, the cost reduction due to the reduction in power consumption, and the reduction in power consumption For example, the carbon dioxide equivalent amount can be exemplified. Focusing on this point, as a display means for displaying a numerical value related to the amount of electric power consumption that has been reduced by using the power saving control device of the present invention, an indicator that displays the cumulative total operating time of the compressor and the operation of the compressor In addition to the indicator that displays the total amount of controlled time, the indicator that shows the reduction rate of power consumption that was reduced by using the power saving control device, the indicator that shows the amount of money that was able to reduce costs, and was able to reduce It can also be set as the indicator which displays a carbon dioxide discharge. When the indicator that displays the amount of money that has been reduced in cost and the indicator that displays the amount of carbon dioxide emissions that has been reduced, numerical values corresponding to the power consuming device provided with the compressor using the power saving control device of the present invention are incorporated. A ROM (Read Only Memory) that stores the calculation formula or conversion formula can be mounted on the control circuit board.

  As a display means for displaying the numerical value related to the amount of power consumption that has been reduced by using the power saving control device of the present invention, a display for displaying the accumulated total operating time of the compressor and the accumulated time for controlling the operation of the compressor are displayed. It is also possible to combine only at least one of a display that displays the reduction rate of power consumption, a display that displays the amount of money that has been reduced in cost, and a display that displays the amount of carbon dioxide that has been reduced. it can. Also, instead of a display that displays the cumulative operating hours of the compressor and a display that displays the cumulative time during which compressor operation was controlled, a display that displays the power consumption reduction rate, and the amount of cost reduction It is good also as at least one of the indicator which displays CO2 and the indicator which displays the carbon dioxide discharge which was able to be reduced. A display means for displaying a numerical value relating to the amount of electric power consumption that has been reduced by using the power saving control device, a display for displaying a cumulative total operating time of the compressor, and a display for displaying a cumulative total time for controlling the operation of the compressor; In this case, a printed matter displaying a calculation formula or a conversion formula for obtaining the reduction rate of power consumption, the amount of cost reduction, and the amount of carbon dioxide emission reduced can be attached to the power saving control device. When the lid is transparent, it is preferable to attach a printed matter to the inner surface of the power saving control device. Using the cumulative value of the actual operating time of the compressor and / or the cumulative value of the time when the compressor operation is controlled, using the calculation formula or conversion formula shown below, the power consumption reduction rate, the amount of money that can be reduced, and The amount of carbon dioxide emissions that can be reduced can be determined. The calculation formula for obtaining the reduction rate of the power consumption is the cumulative value of the time when the compressor operation is controlled / (the cumulative value of the time when the compressor operation is controlled + the cumulative value of the actual operating time of the compressor). The calculation formula for obtaining the amount of money that has been reduced in cost is the cumulative value of the time during which the operation of the compressor is controlled × compressor capacity × 1.5 (coefficient) × unit price. The conversion formula for calculating the amount of carbon dioxide emissions that can be reduced is the cumulative value of the actual operating hours of the compressor (hours: h) x rated power consumption (kW) x carbon dioxide emission coefficient (kg / kW · h) = CO2 amount (kg ). As the carbon dioxide emission coefficient, for example, a numerical value of 0.357 (kg / kW · h) can be used.

  Next, an application example of the power saving control device of the present invention will be shown. The power-saving control device of the present invention was installed in an outdoor unit of a commercial air conditioner (compressor capacity 5.5 kW). The installation work was completed in a very short time because the external wires connected to the air conditioner could be easily connected to the external terminal block. It was installed on July 24, 2003 and surveyed on August 6, 2003. The indicator that displays the cumulative operating time of the compressor displays 24.3 hours, and the indicator that displays the cumulative time of controlling the compressor operation displays 11.9 hours. From these values, the reduction rate is 32.9% (11.9 ÷ (11.9 + 24.3) = 0.329). Further, the amount of money that can be reduced is 1473 yen (11.9 × 5.5 × 1.5 × 15 = 1472.6, where the unit price of the charge is 15 yen per kW). Furthermore, the carbon dioxide emission is 47.7 kg (24.3 × 5.5 × 0.357 = 47.7). Further, since the power saving control device of the present invention is provided with a waterproof / dustproof measure of IP-65 protection class, there is no influence due to intrusion of rainwater or dust. The power saving control device used for the power consuming device including the compressor according to the embodiment of the present invention has been described in detail. As an electronic device according to another embodiment of the present invention, an inverter device using a control circuit board as a printed circuit board can be exemplified. In the power saving control device used in the power consuming device including the compressor according to the embodiment of the present invention, one control circuit board suspended on the U-shaped gantry is exemplified. Two or more printed circuit boards or control circuit boards suspended on the U-shaped cross-sectional frame may be suspended. Also, the number of external terminal blocks arranged and fixed at positions facing the printed circuit board or the control circuit board may be more than one.

It is a perspective view of the state where the inside of a power-saving control device which is one embodiment of the present invention was exposed. It is a perspective view which shows the external appearance of the power saving control apparatus which is one Embodiment of this invention. It is a perspective view of another state which exposed the inside of the power-saving control apparatus which is one Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS I Power-saving control apparatus 1 Case 2 Cover body 3, 4 Display device 5 Control circuit board 6 Outer terminal block 7 Stand 71, 72, 74, 75 Side wall part 73 Ceiling part 76 Hinge 77 Engagement part 78 Attachment part 79 Hole 8 Notch Part 10 Terminal 11 Electric wire 12 Base 13 Fixed part 14 Post 15 External electric wire

Claims (8)

In a casing formed from a casing and a lid fitted to the casing, a printed circuit board, and
An external terminal block for electrically connecting the printed circuit board and an electrical device outside the casing, and a U-shaped cross section formed by a ceiling part and two side wall parts are housed, and the printed circuit board Is an electronic device suspended on the ceiling of the gantry, and the external terminal block is arranged and fixed at a position facing the printed circuit board, the gantry having a ceiling for suspending the printed circuit board The upper portion is divided by the two side wall portions into an upper portion and a lower portion supporting the upper portion, and the upper portion having a ceiling portion for suspending the printed circuit board is rotatable. An electronic device having a structure in which one side wall portion is attached to one side wall portion of the lower portion. The electronic device according to claim 1, wherein the printed circuit board is a control circuit board. In a power saving control device used for a power consuming device provided with a compressor, the present invention relates to a power consumption that can be reduced by using the power saving control device in a casing formed from a casing and a lid fitted to the casing. Display means for displaying numerical values, a control circuit board for controlling the amount of power consumed by the power consuming device, and an external line for electrically connecting the control circuit board and the power consuming device comprising the compressor A terminal block and a U-shaped gantry formed by a ceiling and two side walls are housed, the control circuit board is suspended from the ceiling of the gantry, and the outer terminal block is connected to the control circuit board. A power-saving control device arranged and fixed at opposing positions, wherein the gantry has an upper part having a ceiling part for suspending the control circuit board and a lower part supporting the upper part The one side wall portion of the upper portion is made to be one side wall of the lower portion so that the upper portion having the ceiling portion on which the control circuit board is suspended is rotatable. A power-saving control device characterized by having a structure attached to a part. 4. The power saving control device according to claim 3, wherein the power saving control device is provided between the demand control device and a power consuming device including a compressor. 5. The power saving control according to claim 3, wherein the display means is a display for displaying a cumulative total operating time of the compressor and a display for displaying a cumulative total time during which the compressor is controlled. apparatus. 6. The power saving control device according to claim 3, wherein the display means has a structure that can be observed from the outside through the lid. The power saving control device according to claim 6, wherein the lid is made of a transparent material. The power saving control device according to any one of claims 3 to 7, wherein the power saving control device has a waterproof structure.