JP2009236484A - Composite apparatus and operating method thereof - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem that only a countermeasure for individual devices and appliances has been taken even when multiple devices such as a refrigerating device, an air conditioning device, and a lighting device coexist in a state of thermally effecting each other. <P>SOLUTION: Apparatuses of different kinds are considered as a composite apparatus, correspondence between cold and heat, and of power are added, for example, input of the refrigerating device and input of the air conditioning device are added, a set value in the direction of reducing the added input is selected by changing the setting temperature or the setting humidity, and stable energy reduction is realized by a simple structure. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to control of air temperature and humidity in a space where a refrigeration apparatus and an air conditioner coexist, for example, in a supermarket or a convenience store. The present invention also relates to an indoor complex apparatus in which devices and devices such as lighting and a range that become a cooling load other than an air conditioner exist.

  Traditionally, in stores such as supermarkets and convenience stores, food display showcases are stored at different temperatures for each item, and for refrigerated foods, they are stored at 0 ° C-10 ° C, while the air conditioning temperature for customers in the store is It is set around 25 ° C in summer and 20 ° C-25 ° C during winter heating. For low temperature storage devices such as various showcases and freezers, the air temperature and humidity in the store from the wall of the device or from the wall of the device is a load, and particularly in an open showcase, an intrusion load from the air curtain. For such low-temperature equipment, a lower in-store temperature and humidity are preferable because of less load. On the other hand, there is a wide range of temperatures that people feel comfortable in the store, and the temperature, humidity, airflow, etc., create a human-like temperature in the indoor environment that feels comfortable. Therefore, it is desirable to maintain a temperature range that is low for a refrigeration system of a low-temperature food storage device and that is comfortable for a person entering and exiting a room. A technique described in Japanese Patent Application Laid-Open No. 11-206014 is known for controlling a composite apparatus in a plurality of types of spaces.

  FIG. 27 illustrates this technique. The store A is provided with a management / control unit 51, which manages and controls the air conditioner 52, the refrigerator 53, the showcase 54, the ventilation fan 55, the illumination 56, and the control panel 57 via the communication port 60. The air conditioner 52 transmits and receives data from the communication port 60 to control its air conditioning capability. Each device such as the refrigerator 53 has a sensor 53b, 54b, 55b, 56b for detecting a corresponding state quantity, and the detection signal is transmitted to the communication port 60 via each interface 53a, 54a, 55a, 56a. Transmission and reception are performed, and the respective setting states are controlled, and the setting states of the respective devices are managed and controlled in an order according to preset priorities. The control panel 57 receives AC power from the power system and monitors whether or not the allowable power is exceeded. The current value is detected by a current sensor 57b provided on the control panel, and data is transmitted to and received from the communication port 60 via the interface 57a. Data of the room temperature sensor 58 and the outside air temperature sensor 59 are also sent in the same manner. In the air conditioner 52 provided in this way, the operation mode and the room temperature are set by the remote controller or the management / control unit, but the set temperature is changed according to the detection of the outside air temperature sensor 59 to reduce power consumption. . Further, demand control is performed in a predetermined order according to the detection of the current sensor 57b, and a peak cut or the like is possible. Further, the illuminance of the luminaire set in advance is reduced by a signal from the illuminance sensor 56b to suppress unnecessary power consumption.

  As described above, in the conventional technique, each device is provided with a sensor to control each device. Japanese Patent Laid-Open No. 9-196432 is known as a technique for reducing power demand for an air conditioner that air-conditions a store where an open type low-temperature showcase is installed. This determines the data detected by the outside air temperature sensor, the in-store temperature sensor, the in-store humidity sensor and the refrigeration capacity of the low-temperature showcase, calculates the cooling load of the device to calculate the conversion efficiency index of the device, and further calculates this The demand power is calculated and the set temperature is changed in a direction in which the estimated demand power decreases, and the demand power is calculated using each equation from the temperature data of the refrigeration cycle. Further, discounted electricity charges according to time zones and seasonal zones are known from JP-A-6-165374, JP-A-11-41808, and the like. As for the peak avoidance method, a technique disclosed in Japanese Patent Laid-Open No. 3-291096 is known.

JP-A-11-206014 JP-A-9-196432 JP-A-6-165374 Japanese Patent Laid-Open No. 11-41808 JP-A-3-291096

  In contrast to complex devices that interact with each other as a cooling load, energy countermeasures for individual devices have hitherto been considered, and the effects of other devices have hardly been considered. In addition, the proposal for the combination of specific equipment is also to calculate the demand power by estimating the cooling load as described above, and requires complicated calculations such as changing the formula for each capacity of the device, and Even if the purpose of setting the set temperature of the air conditioner in the direction of reducing the power demand is described, the method of how to set it is unknown and cannot be realized. Furthermore, the proposal was far from the original purpose of each device, such as for human comfort, and the original purpose did not take any consideration into consideration, and the control content was difficult to say practical.

  The present invention regards an air conditioner that performs cooling, heating, ventilation, or dehumidification, a refrigeration apparatus that stores food, etc., or a heat generating device such as a lighting device that affects each other as a cooling load as a composite device. The original individual devices are intended to save energy as a whole while maintaining the operation of achieving the objective. In addition, the present invention suppresses the waste of operation of individual devices and apparatuses so as not to affect other devices and apparatuses. In addition, the present invention seeks to combine different purposes of the composite device, such as energy saving, comfort, and food freshness, against environmental changes that change with time, such as the season. Furthermore, the present invention is intended to reduce the running cost of a complex apparatus such as a food store without adversely affecting each apparatus. Further, the present invention is intended to reduce the cost of the power consumption of the composite apparatus by eliminating the waste of the charge contract for the external power. The present invention also proposes an apparatus and method for effectively using the power used by the composite apparatus.

  The composite apparatus according to the present invention includes a room to which cold heat is supplied from an opening of a refrigeration apparatus for storing food, an indoor temperature / humidity detection means for detecting the indoor temperature and humidity, and an indoor temperature / humidity detection means provided in the room. An air conditioner that adjusts the humidity relative to the indoor temperature so that the detected indoor humidity is equal to or higher than the absolute humidity corresponding to the dew point of the temperature in the refrigerator housing food, and the temperature of the indoor air in the air conditioner Maintains the humidity in the target temperature / humidity zone that is the setting range, and stores the sum of the inputs of the control device that sets the target temperature / humidity and the refrigeration and air conditioning devices that measure the target value little by little. Storage means.

  The composite apparatus according to the present invention adds the input of the refrigeration apparatus and the input of the air conditioner, and changes the set temperature or set humidity, or the set value of the blown air speed or air volume, which is a target value to be changed little by little. A setting value is selected in a direction in which the total input becomes smaller.

The composite apparatus according to the present invention sets a target set value for the air conditioning room to a high temperature in a preset target temperature / humidity zone during cooling, and in a preset target temperature / humidity zone during heating. The temperature is set to a low temperature.

The composite apparatus according to the present invention includes an outside air introduction unit that introduces outside air into the room and an outside air temperature / humidity detection unit that measures the temperature and humidity of the outside air. Based on the calendar information, the set temperature or set humidity of the air conditioner or the blown air speed or air volume is changed.

The composite apparatus according to the present invention includes an outside air introduction unit that introduces outside air into the room and an outside air temperature / humidity detection unit that measures the temperature and humidity of the outside air. The target temperature / humidity zone, which is the temperature / humidity range of the indoor air maintained by the air conditioner, is adjusted based on the calendar information.

The composite apparatus according to the present invention includes an outside air introduction unit that introduces outside air into the room, and an outside air temperature / humidity detection unit that measures the temperature and humidity of the outside air, calculates an enthalpy of the measured outside air, and And an enthalpy of the outside air are operated and stopped, and a temperature limiter for stopping the operation of the outside air introducing means is provided in a range where the room temperature does not reach the lowest temperature causing a problem such as freezing.

The composite apparatus according to the present invention includes an internal temperature detection means for detecting the internal temperature of the freezer that is disposed indoors and supplies cold heat at a temperature lower than the indoor temperature, and an internal temperature detection means in which the internal temperature detection means is set. A refrigerant circulation shut-off means provided in the refrigeration apparatus for shutting off the circulation of the refrigerant for supplying cold heat to the inside with an on-off valve when a target temperature of 1 is reached, and a temperature higher than the first target temperature. A capacity control device that controls the rotational speed of the compressor provided in the refrigeration apparatus to be small when the temperature in the refrigerator reaches a certain second target temperature, and controls the first so as to suppress fluctuations in the temperature in the refrigerator. The temperature difference between the target temperature and the second target temperature is set.

The operation method of the composite apparatus according to the present invention includes an air temperature / humidity detecting step for detecting and storing the temperature and humidity of indoor air and the temperature of outdoor air that are air-conditioned by an air conditioner, and a refrigeration apparatus for storing food having an opening in the room Calculating the absolute humidity with the internal temperature as the dew point and calculating the input of the air conditioner from the temperature and humidity stored in the air temperature and humidity detection step, The temperature of the room air that is smaller than the sum of the inputs and the humidity relative to the temperature of the room air that is selected to be higher than the absolute humidity is set as the target value for the operation of the air conditioner And a step of performing.

The composite apparatus according to the present invention includes an illuminating device that is arranged near the ceiling of the room and rectifies an alternating current and is supplied with electric power via an inverter to illuminate, and air that is arranged indoors and is air-conditioned indoors near the lighting apparatus. An air conditioner to be circulated, a temperature detection means for measuring an air temperature circulating around a room around the illumination apparatus, and an inverter according to the ambient temperature of the illumination apparatus detected by the temperature detection means And a control means for controlling the input to the lighting device.

The composite device according to the present invention includes an illumination device that is arranged near the indoor ceiling and rectifies alternating current and is supplied with electric power via an inverter to perform illumination, and an air outlet that is arranged near the indoor ceiling and is air-conditioned into the room. An air conditioner that blows out the air, temperature detection means that measures the temperature of the air that circulates around the interior of the lighting device, and covers a portion of the air that blows off the air outlet from the air outlet. A ventilation guide that flows along the vicinity of the ceiling and leads to the illuminating device, and circulates air through the illuminating device to keep the temperature around the illuminating device detected by the temperature detecting means within a range that ensures a certain brightness. Is.

The composite apparatus according to the present invention suppresses the air temperature circulating in the room around the lighting apparatus within a range of 20 ° C to 30 ° C.

The composite device according to the present invention covers an illumination device that is provided outdoors and illuminates, and has a cover provided with holes in the lower and upper portions so that heat does not accumulate inside the illumination device by circulating air, A temperature detecting means for detecting the ambient temperature of the lighting device and a control means for changing the voltage applied to the lighting device by an inverter to change the brightness of the lighting, according to the temperature detected by the temperature detecting means. Thus, the inverter is controlled to keep the lighting device at a constant brightness.

The composite apparatus according to the present invention reduces the voltage of the inverter in accordance with a decrease in the temperature around the lighting apparatus for a specific time period.

A composite device according to the present invention includes a heat generating device that generates cold or high temperature heat, an air conditioner that cools or heats the room in which the heat generating device is disposed, and an illumination that is disposed in an upper portion of the room. An illuminating device, an electric circuit connecting means capable of connecting at least two types of heat generating device, air conditioning device, and lighting device to a plurality of types of power supplies; and at least two types of heating device, air conditioning device, and lighting device An arithmetic device that totals the power consumption of the device, and when the total power consumption reaches a predetermined value, switch the electrical circuit connection between at least one device and one type of power supply to another type To be connected to the power supply.

The composite apparatus according to the present invention is a device that generates cold or high temperature heat, an air conditioner that cools or heats the room in which the heat generating device is disposed, and an illumination that is disposed in the upper part of the room. And an electric circuit connecting means capable of connecting at least two types of devices, ie, a heat generating device, an air conditioner, and a lighting device, to a plurality of types of power supplies, and at least two types of the heat generating device, the air conditioner, and the lighting device The power source to which the above devices are connected is connected to another power source during a preset time zone.

A composite apparatus according to the present invention includes a room to which cold heat is supplied from an opening of a refrigeration apparatus for storing food, an indoor temperature / humidity detecting means for detecting the indoor temperature / humidity, and an indoor temperature / humidity detecting means provided in the room. The air conditioner that adjusts the humidity relative to the room temperature so that the detected room humidity is equal to or higher than the absolute humidity corresponding to the dew point of the temperature inside the refrigerator housing food, and the air temperature in the room Memory that stores the inputs of the control device that sets the target temperature and humidity, the refrigeration system that measures the target value little by little, and the air conditioner while maintaining the humidity in the target temperature and humidity zone that is the setting range Therefore, energy can be reduced for indoor air including humidity.

The structure explanatory view of the compound device by the example of the embodiment of this invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. The structure explanatory view of the compound device by the example of the embodiment of this invention. 1 is an explanatory diagram of a communication configuration of a composite apparatus according to an example of an embodiment of the present invention. Explanatory drawing of the control structure of the composite apparatus by the example of embodiment of this invention. The characteristic explanatory view of the compound device by the example of the embodiment of this invention. The characteristic explanatory view of the compound device by the example of the embodiment of this invention. The characteristic explanatory view of the compound device by the example of the embodiment of this invention. The structure explanatory view of the compound device by the example of the embodiment of this invention. The characteristic explanatory view of the compound device by the example of the embodiment of this invention. The structure explanatory view of the compound device by the example of the embodiment of this invention. Explanatory drawing of the control structure of the composite apparatus by the example of embodiment of this invention. Explanatory drawing of the control structure of the composite apparatus by the example of embodiment of this invention. The characteristic explanatory view of the compound device by the example of the embodiment of this invention. The characteristic explanatory view of the compound device by the example of the embodiment of this invention. The flowchart of the compound apparatus by the example of this Embodiment. The characteristic explanatory view of the compound device by the example of the embodiment of this invention. The flowchart of the compound apparatus by the example of this Embodiment. The characteristic explanatory view of the compound device by the example of the embodiment of this invention. The characteristic explanatory view of the compound device by the example of the embodiment of this invention. The structure explanatory view of the compound device by the example of the embodiment of this invention. The structure explanatory view of the compound device by the example of the embodiment of this invention. The structure explanatory view of the compound device by the example of the embodiment of this invention. Explanatory drawing of control structure of the composite apparatus by the example of another embodiment of this invention. FIG. 5 is a circuit configuration explanatory diagram of a composite apparatus according to another example of the present invention. The characteristic explanatory view of the compound device by the example of another embodiment of this invention. Explanatory drawing of control structure of the conventional composite apparatus.

Embodiment 1 FIG.
FIG. 1 to FIG. 5 are diagrams for explaining a configuration that is an example of the present invention. FIG. 1 is a diagram for explaining an apparatus according to the present invention, FIG. 2 is a diagram for explaining the appearance of a convenience store, and FIG. FIG. 4 is a partial perspective explanatory diagram of the store as viewed from above, FIG. 4 is a signal transmission partial explanatory diagram of the configuration of the present invention, and FIG. 5 is a control circuit diagram of the configuration of the present invention. In FIG. 1, 1 is a store that handles food such as a convenience store, 2 is a showcase that is installed in the store and stores food refrigerated, 3 is installed in a machine room at the lower part of the showcase, An in-showcase evaporator that cools the air circulated so as to cool the food stored in the storage of the showcase 2, 4 is a condenser 5 that forms the refrigeration cycle of the showcase 2, a compressor 6, and an expansion device 7 is an outdoor unit for storing 7, 8 is a dew-proof heater, 20 is an intrusion air flow in the store which is air entering from the opening of the showcase 2, 10 is an indoor heat exchanger of the air conditioner 52, 11 is a temperature / humidity detection means in the store, Reference numeral 12 denotes an outdoor heat exchanger 14, which forms a refrigeration cycle of the air conditioner 52, a compressor 13, a four-way valve 15, and an outdoor unit that houses an expansion device 16. Reference numeral 17 denotes an outside air temperature detecting means for detecting the outside air temperature. There are, it may be utilized an air temperature detecting element provided in such an outdoor unit 4 and the outdoor unit 12. Reference numeral 18 denotes a controller which is a refrigeration air-conditioning combined air environment control device. Of course, the controller 18 may be attached to the wall surface of the room as shown in FIG. 1, or may be provided outside the room, in the refrigeration apparatus, in the air conditioner, or the like. Reference numeral 96 denotes a pipe for circulating the refrigerant of the refrigeration cycle.

  Next, the operation of FIG. 1 will be described. In the showcase 2 which is a refrigeration apparatus, foods are preserved by refrigeration or freezing of goods throughout the year regardless of summer or winter. The system cycle of the refrigeration apparatus constitutes a refrigeration cycle in which a showcase disposed indoors and an outdoor unit disposed outdoors are connected by a pipe 96, and the gas refrigerant compressed to high temperature and high pressure by the compressor 6 is condensed. It is condensed by the machine 5 and expanded by the expansion device 7 to become a low-temperature refrigerant in the evaporator. The air sucked by the blower fan arranged in the machine room at the lower part of the showcase is cooled by the evaporator 3 and blown out as a low temperature air from the upper outlet through the rear air passage into the cabinet. The airflow is formed on the outside to form the air curtain 9, and the air at the temperature TRi is again sucked by the blower fan. In this manner, the showcase 2 seals the opening with an air curtain to maintain the internal temperature TR at a set low temperature, and maintains the humidity φR at a high humidity to maintain the freshness of the food. Moreover, the customer can freely take out the item from the opening. Furthermore, a dew-proof heater 8 is attached to the showcase 2 in order to increase the temperature of the surface of the apparatus body and prevent dew condensation.

  Further, in the air conditioner, the cooling operation is performed in summer, and in the refrigeration cycle connected by the pipe 96, the gas refrigerant compressed to high temperature and high pressure by the compressor 13 provided in the air conditioner outdoor unit 12 passes through the four-way valve 15. Condensed and liquefied by the outdoor heat exchanger 14 and heated and expanded by the expansion device 16 to become a low-pressure and low-temperature liquid and gas two-phase refrigerant and enter the indoor heat exchanger 10 or air-conditioning by cooling the air in the store 1 Return to the outdoor unit 12 of the apparatus. The air in the store 1 is circulated by the indoor fan 21, and the store 1 is cooled through heat exchange between the circulating air and the low-temperature refrigerant. The air conditioner 52 adjusts the temperature and humidity according to the indoor temperature Ti and humidity φi detected by the detection means 11, so that a comfortable target temperature of, for example, about 23 to 26 ° C. is set according to a preset temperature setting value. Will be kept.

  In FIG. 2, 71 is a building where a store such as a convenience store occupies a corner, 72 is an external lighting which is a signboard of the store, and 73 is opened and closed by the approach of a person to prevent air circulation from the outside to the room An open / close door that automatically opens and closes, 74 is a transparent glass wall that is fixed to the external wall 75 and has a pattern 95 written thereon, 76 is a grill that faces the interior of the air conditioner, and 77 is a room that constantly illuminates the interior brightly by a large number of vertical and horizontal arrangements. An illumination device, 78 is a public telephone, and 80 is a distribution board of this store. Further, for example, the outdoor unit 4 of the showcase 2 and the outdoor unit 12 of the air conditioner 52 are stacked and installed.

  FIG. 3 is a view for explaining the arrangement state of each device as seen from above the store, and 53 is the same as the showcase 2 on the indoor wall surface, the inside temperature is lower than the showcase, and glass A freezer that opens and closes with a door to take out food inside, 81 is a power line that transmits electric power, 43 is a control unit of the air conditioner, 44 is a control unit of the freezer, and 45 is a control unit of the showcase. The controller 18 and the control unit of each device perform transmission / reception of signals via the power line 81. 82 is a ventilation fan, 83 is introduced through a damper 22 that opens and closes the outside air from the ventilation fan, or air that has been cooled by the indoor heat exchanger 10 of the air conditioner 52 is blown into the indoor grill 76 that blows the air indoors. It is an arranged duct. In addition, the air outlet to the room of the air conditioner 52 can be provided in the main body 52 in this way, another air outlet can be provided via a duct, or a circulation fan provided in the inside of the air outlet grill. It is. The air conditioner has a suction port for sucking in indoor air and a blowout port for blowing air conditioned into the room, and a ceiling-embedded air conditioner adopts a configuration that sucks in from the center of the grill and blows it out from the surroundings. ing. Furthermore, the air conditioner may be provided in the vicinity of the ceiling of the side wall as well as embedded in the ceiling, or may be fixed by hanging from the ceiling surface. In the case of mounting on the side wall, the air is sucked in from the upper part and blown out from the lower part.

  Reference numeral 23 denotes a ventilation guide that covers the outer peripheral edge of the blowout opening of the indoor grill 76 flush with the ceiling surface from the indoor side, and allows a part of the blown wind to flow along the ceiling surface. Most of the wind blown out from the indoor grill 76 is circulated in the room. By using this wind flow, the wind is sent to a number of exposed fluorescent lamps arranged so as to protrude from the ceiling surface. It plays a role to hold down to a certain range. Naturally, the grill 76 and the air conditioner main body 52 may be slightly protruded from the ceiling surface to change the direction of the wind direction plate inside the grill, that is, the direction of the wind direction plate inside the grill to create a flow of wind along the ceiling surface. In addition, when using an air conditioner that blows out air from the side wall near the ceiling, a grill structure that creates a flow along the ceiling surface is required, and the air flow is almost distributed to the fluorescent lamps that are distributed over the entire ceiling surface. Therefore, it is desirable to have a structure that can further obtain the effect of the ventilation guide such as blowing from the outlets distributed over at least one wall surface. Note that the flow along the ceiling in the grill may be intermittent, that is, the air blowing direction may be switched at time intervals. Fluorescent fluorescent lamps that are used in a certain temperature range with such ventilation guides can maintain the desired illuminance without becoming brighter or darker due to the temperature because the luminous flux is maintained in a constant state of efficiency. The effect can be fully exhibited.

  FIG. 4 is a diagram for explaining communication means for transmitting and receiving the signal of FIG. 3, wherein 32 is a microcomputer on the board attached to the control unit 43 provided inside the air conditioner 52, and 43 a is connected to the microcomputer 32 for communication. A communication interface comprising means 33, modulation / demodulation means 34, and coupling means 35, 36 is a communication interface connected to the control unit of each device by a power line 81 and connected to the microcomputer 18 and 37 is another communication such as wireless communication. The communication interface 39 is connected to the control unit of each device, and 39 is a modem connected to the service center 47 and the mobile phone 48 via the telephone station 46 via a telephone line or the like. The microcomputer installed in the control unit of each device stops the operation of each device, for example, switches the ventilation fan, air conditioning or showcase lighting, switches the operation mode of heating or cooling, sets the temperature or humidity, and the temperature from the sensor. The temperature control based on the information, the operation state, etc. are performed as an instruction of the control operation based on the operation stored in the microcomputer and the calculated result. As the operation of this circuit, the communication means 33 selects a received message for itself and issues an instruction to the microcomputer 32 or assembles a transmission message according to the instruction of the microcomputer 32. That is, the received message oscillated by the controller 18 is selected and the content, for example, the change of the temperature set value from the service center is transmitted to the microcomputer 32. On the contrary, the transmission telegram and the current set temperature value are transmitted to the controller 18 in accordance with an instruction from the microcomputer 32.

  The transmission message is composed of a transmission source address, a transmission destination address, contents, and the like. The modulation / demodulation means 34 is a modulation circuit that modulates a digital signal into an analog signal and, conversely, data by a predetermined modulation method. As the modulation method, for example, amplitude modulation or phase modulation is used. When sending a signal through a power line, the 50-450 kHz frequency band is defined by the Radio Law. The coupling means 35 is a coupling circuit including a transformer for placing a signal on the power line, and takes out a signal from the power line. The signal transmitted to the controller 18 by the coupling means 35 through the power line and the communication interface 36 is communicated to the outside through a telephone line 46, a telephone line 46, etc. from the modem 39. In this manner, transmission and reception are repeated between the controller 18 and the control unit of each device, and information exchange, operation instructions, and the like are easily performed. The transmission and reception of signals using such an existing electric light line eliminates the need for a special signal wiring, so that construction can be performed easily and reliably. Note that transmission / reception of indoor signals may use other communication methods, for example, wireless, infrared, or communication wiring used for existing air conditioning control.

  FIG. 5 is a diagram for explaining the flow of an operation system that performs control for energy saving of a composite device arranged in a room such as the store described in FIGS. 1 to 4, and 43c is provided in the distribution board 80. The detected sensors WA and 43b for detecting the input of the air conditioner are provided in the control unit 43 of the air conditioner in which the temperature set value TS and humidity set value φS of the air conditioner are set, and detect the outside air temperature TO and the outside air humidity φO. The sensor 44b is a sensor provided in the control unit 44 of the refrigerator to detect the outside air temperature TO and the outside air humidity φO. The sensor of the outside air temperature or humidity is the control unit 43 of the air conditioner or the control of the refrigerator. What is necessary is just to provide in either one of the parts 44. FIG. 45b is a sensor provided in the control unit 45 of the showcase to detect the internal temperature TR, 41 is provided in the controller 18 and is controlled by the control unit 43 of the air conditioner, the control unit 44 of the refrigerator, and the control of the showcase via the communication line. The sensor group management means 41a, the operation algorithm means 41b, and the control data means 41c, which are connected to the unit 45 etc. and perform control while taking a certain correlation between the state quantities between the devices based on the operation algorithm of each device. And a management control unit composed of the communication data processing means 41d. The sensor group management unit 41a collectively manages the state quantities of the devices stored in the control data unit 41c, and classifies them into common physical quantities, physical quantities corresponding to individual apparatuses, and apparatus correlation physical quantities. The common physical quantity is like the outside temperature described above. A physical quantity corresponding to an individual device is a physical quantity of only that machine, such as a pressure at a specific part of a refrigerator.

  The equipment correlation physical quantity is a physical quantity related to both the refrigerator and the air conditioner, such as the in-store temperature, and is related to an algorithm used for obtaining energy saving. An air conditioner that performs cooling, heating, ventilation, or dehumidification, a refrigeration device that stores food, or a heating device such as a lighting device interacts as a cold load with each other as a combined device, that is, a showcase The cold generated by the refrigerator, such as the low-temperature air in the warehouse, serves to lower the air temperature in the store, so that each individual device is intended to save energy as a whole while maintaining its intended operation. In addition, it is necessary to separate and treat the independent quantity and the correlated quantity in each machine. Independent quantities are necessary to control in each machine and can be processed in them, but the quantities related to each other can be collectively controlled like the controller 18 or exchange data by communication with each other. There is a need. The operation algorithm means 41b includes, for example, a showcase energy saving operation algorithm and is built in advance in the management / control unit 41. When a new addition, revision, or deletion is performed, a telephone line or a modem 39 is externally connected. Can be changed via Further, a part of the control data means 41c is also sent from the outside to the management / control unit, for example, a revised value of the power charge via the telephone line. The communication data processing means 41d communicates with each device through the interfaces 43a, 44a and 45a, or processes data sent to the outside of the control data means 41c through the modem 39, and conversely receives data from the outside to control data. Passed to means 41c.

  In FIG. 5, the air conditioner power consumption WA of the air conditioner distribution board sensor 43c, the refrigerator power consumption WR of the refrigerator machine distribution board sensor 44c, and the showcase power consumption WS of the showcase machine distribution board sensor 45c. This is transmitted to the management / control unit 41 via the communication line 42, and the operation algorithm means 41b detects each of the air conditioner power consumption detection means WA, the refrigerator power consumption detection means WR, and the showcase power consumption detection means WS. In addition, the detected power is summed, and changes such as the temperature set value TS that is the in-store target temperature and the rotational speed of the indoor fan 21 of the air conditioner 52 are repeated so that the total sum is always small. This is because the temperature set value TS, the rotational speed of the indoor fan 21 of the air conditioner 52, etc. are changed by a given amount, and if it is confirmed that the power consumption is smaller than before the change, these can obtain a small power consumption. The setting data is fed back to the air conditioner, and by repeating this operation, it becomes possible to always control the power consumption in the minimum direction.

  Next, details of the operational algorithm of the present invention will be described. FIG. 6 shows the coefficient of performance COP during cooling of the air conditioner. The horizontal axis represents the intake air temperature Tei of the indoor heat exchanger 10 of the air conditioner functioning as an evaporator, that is, the in-store temperature of the circulating air. When the device is installed near the ceiling, it is the highest temperature of the room air. The vertical axis represents the coefficient of performance COP, which is defined by the equation COP = capability (Q) / input (W). In addition, Tci described in the figure is the outside air temperature To which is the intake air temperature of the outdoor heat exchanger 14 functioning as a condenser. As for the coefficient of performance COP of the air conditioner, the coefficient of performance COP improves as the air temperature Tei in the store increases as shown in FIG. The coefficient of performance COP is improved as the outside air temperature To is lower. That is, at a constant outside air temperature such as Tci = 30 ° C, the higher the air temperature in the store, such as A1 = 25 ° C than A2 = 20 ° C, the better the coefficient of performance COP and the same ability Q is realized. Requires less input as in the above equation. Also, as indicated by points B1 and B2, the coefficient of performance COP is better when the outside air temperature is lower at the same indoor air temperature, and less input is required as in the above equation to achieve the same capability Q. .

  On the other hand, an example of a heat load component ratio of a showcase that is one of the refrigeration apparatuses (from the Refrigeration and Air Conditioning Manual) is shown in FIG. In FIG. 7, the classification such as multi-stage type and flat type, freezing and refrigeration, and whether the air curtain is single or multiple are explained, and according to this, the heat load of the showcase is switched with the air load q1 and the conduction. It is composed of a heat load q2, a radiant heat load q3, and an internal load q4. In particular, the air load q1 is changed to be the main heat load of the multistage showcase. This corresponds to the heat load of the intrusion air 20 from the store into the store in the showcase 2 of FIG. The table in FIG. 7 also shows the air curtain air volume, the ambient air intrusion amount, and the ambient air intrusion ratio. As shown in this figure, in the case of the multistage type, even if the air curtain is multiplexed, the air load is changed and the air load is large. FIG. 8 shows the heat load of the showcase with respect to the temperature of air entering the showcase. The horizontal axis represents the air temperature Ti (° C) entering the showcase, and the vertical axis represents the heat load QR (Kcal / h) of the showcase, as the air temperature in the store rises, that is, from 20 ° C to 30 ° C. As the temperature increases, the heat load of the showcase increases, thus increasing the input of the refrigeration system. As described above, in the air conditioner, the coefficient of performance COP is improved and the input is decreased as the in-store temperature is increased, whereas in the refrigeration apparatus, the heat load of the showcase is increased as the in-store air temperature is increased. Input increases. Therefore, there is an air temperature Ti in the store where the sum of the input of the refrigeration apparatus and the input of the air conditioner becomes small.

  As shown in FIG. 5, the power or voltage and current that are input by the distribution board 80 are detected by the sensors 43C and 45C. The inputs of the air conditioner 52 and the showcase 2 are communicated to the management / control unit 41, and the sum of these inputs is obtained. Next, the temperature setting value TS of the air conditioner 52, that is, the target value for setting the air temperature Ti in the store to that temperature is changed by a predetermined procedure. By this change, it is determined whether the total value WA + WS of the input is larger or smaller than before the change. As a result of this determination, the temperature setting value with the smaller total input value WA + WS is selected, and the management / control unit 41 instructs the temperature setting value to the control unit 43 of the aerial device. This change may be in the direction of increasing or decreasing the target temperature. However, if the change is made continuously at regular time intervals, the direction in which the total input has decreased in the previous change, for example, the air temperature in the store If the total input becomes smaller when the temperature setting value is changed in the higher direction, change to the temperature setting value in the direction where the temperature will increase again the next time. Change the set value in the direction of decreasing the value. If the range to be changed is determined in advance, the temperature of the space where the person exists will rise, fall or stay at a constant temperature within the temperature range. This temperature range can be changed according to the season or according to the heating or cooling operation mode. These changes may be made to the management / control unit from the outside through a telephone line or by a switch provided in the indoor controller.

  Not only stores, but also indoors such as houses, workplaces, offices, etc., such as air conditioners that perform cooling, heating, ventilation, or dehumidification, refrigeration devices that store food, etc., lighting devices, and personal computers Various heat generating devices and the like influence each other as a cooling load through indoor air. Among such devices, there is a combination of moving the power consumption in the opposite direction through the air temperature in the room like the air conditioner and the showcase. There are many combinations of such air conditioners and showcases, and in some cases, combinations of refrigerators and refrigeration warehouses and air conditioners that often open and close the doors, and combinations of lighting and air conditioners that keep the illuminance constant. There are cases, and this composite device is not limited to two types, and there are three types and four types of combinations. Of course, when there are a plurality of devices of various types, such as air conditioners and showcases, it is natural that the total of them should be captured. The energy saving operation of the composite apparatus can be performed by a simple method in which determination is made based on the lower total input measured by changing the target temperature setting of the apparatus that performs air conditioning in the room little by little. In FIG. 1, the detection means for both the indoor temperature and humidity has been described. However, as described above, the energy-saving operation can be performed by the detection means for only the temperature. The energy saving operation including the entire sensible heat latent heat including humidity will be described later.

  In the description so far, the temperature / humidity setting means has been described as an object to change the temperature set value, which is the indoor temperature target value. It suffices to perform an operation that brings the room temperature close to this set value, which is straightforward and easy to understand. However, as long as there is something that can change the total input by another operation without changing the temperature setting value, it is of course possible. For example, the rotational speed of the indoor fan 21 of the air conditioner 52 may be changed to change the air speed and the amount of air blown into the room. When the rotational speed of the indoor fan is lowered during the cooling operation, the rate of heat exchange with the indoor heat exchanger, which is an evaporator, decreases, and the evaporation temperature, that is, the temperature of the indoor heat exchanger also decreases. As a result, the condensation temperature of the outdoor heat exchanger also decreases, the load on the compressor that drives the refrigeration cycle decreases, and the input decreases. At this time, the air temperature is lowered because the evaporation temperature is lowered, the temperature of the air conditioner is lowered, and the input of the air conditioner is lowered. In other words, it is only necessary to find the direction in which the input temperature of the air conditioner decreases based on the change of the indoor air blowing temperature by increasing or decreasing the rotational speed of the indoor fan 21. The indoor fan of the air conditioner can change the fan speed in multiple stages, but if the set temperature is not changed by reducing the fan speed, the humidity can be lowered. However, even if the target value is lowered, the input does not change immediately, and there are other effects, so judgment is made based on an average trend over time.

  In addition, the temperature setting value and fan speed are determined from past data according to each season, time zone, operation mode, etc., and operation is performed to maintain the value, and it is detected whether the total input is less than the predetermined value. It is also possible to perform control such as changing the temperature set value and the fan speed in the obtained direction. In this case, if the outside air temperature is detected and the set value or the adjustment range of the set value is moved according to the outside air temperature, control with higher accuracy becomes possible. The explanation of changing the temperature / humidity setting value of the air conditioner, which is the target of the room temperature, in the direction that the total of the input of the refrigeration device and the input of the air conditioner becomes smaller, and Although the explanation has been made on changing the fan speed, as a temperature / humidity setting means for setting the wind speed or air volume to be blown into the room in the direction of decreasing the total input, there is also a structure in which the ventilation resistance in the air conditioner or duct is changed and set. Is possible. The shutter opening / closing angle of the grill can be changed, or the damper 22 can be provided in the duct to change the wind speed and the amount of air blown into the room. Also, the filter provided at the air inlet of the air conditioner may be changed between sparse and dense filters depending on the season. If a plurality of temperature and humidity adjusting means are switched and used according to the operating state, energy saving can be easily obtained without causing unreasonable driving.

  As another temperature / humidity adjusting means, there is a means for adjusting the indoor temperature and the like by introducing outside air. When introducing outside air into the room, an air supply fan is used, and a filter is provided at the entrance to allow fresh and clean air to enter the room as needed. At this time, a heat exchanger that provides a fan for supplying the outside air into the room and a fan for exhausting the room air to the outside, and exchanges heat between the supply air and the exhaust so as not to waste indoor heat energy. It is conceivable to provide FIG. 9 shows an example of the outside air introducing means. 61 is an air supply blower that takes outside air from the air passage 26 through the air passage 27 into the room, 62 is an exhaust air fan that exhausts indoor air from the air passage 28 to the air passage 29, and 63 is air supply. Is a heat exchanger for exchanging heat between the exhaust and the exhaust, 64, 65, 66 are filters for removing dust and dust contained in the air, 68 is a bypass air passage, and is provided with a bypass damper 67 when heat exchange is not performed. The room air is switched and exhausted directly through the bypass air passage 68. Usually, heat exchange is performed during daytime when the enthalpy of the outside air is large, and only when the air is small at night, supply and exhaust are performed. That is, if the direction of reducing the enthalpy of air in the store is reduced, the air conditioning load and the load on the showcase are reduced.

  The heat exchanger 63 in FIG. 9 is an air-to-air heat exchanger, and a sensible heat exchanger that exchanges only the temperature if a metal that does not allow moisture to pass through is used as a member that separates the supply air and the exhaust inside. If a porous material such as paper that passes moisture is used, it becomes a total heat exchanger that simultaneously exchanges temperature and humidity. In supermarkets with large indoor loads and buildings that require cooling during winter and intermediate periods due to increased loads, a device with a bypass air passage is used in the total heat exchanger to obtain a cooling effect due to low temperature outside air. In addition, exhausting dirty air in the room can be done by exhausting with a ventilation fan, but in this case, the air supply only enters naturally through the gap, so that it is cleaner to supply air. Especially in stores such as supermarkets and convenience stores, when the air is exhausted, the room becomes negative pressure and the outside air enters when the door is open, etc. Inhale clean dust-free air.

  The explanation up to now has mainly been explained with an example of a 24-hour convenience store. However, in large supermarkets and the like, people and food coexist in the daytime and there are no people in the nighttime. Energy saving can be achieved. FIG. 10 is an example of the actual measurement result of the refrigeration electromotive force consumption in the supermarket. In the supermarket described in April 1999, a consideration from the actual power consumption measurement result in the industrial sector issued by the Japan Energy Research Institute. It is an actual measurement result of refrigerator electromotive force consumption. In the figure, actual surveys are conducted at two stores, A store and S store. The daytime described in FIG. 10 is within the business hours of the store, and indicates 10 o'clock to 21 o'clock at the store A and 10 o'clock to 20 o'clock at the store S. The nighttime is outside business hours, and it is 21 o'clock to 10 o'clock at store A and 20 o'clock to 10 o'clock at store S. The cold power shown in FIG. 10, that is, the power consumption of the freezer for freezing, uses power consumption that is not much different from daytime even at night, which is outside the business hours of both stores. About 80 percent of electricity is consumed in the daytime.

  On average, other refrigerators for refrigeration consume about 50 percent of electricity during the day. In the showcase connected to the refrigerator, the air exchange load is the main heat load as described above, and this exchange load becomes smaller as the in-store temperature is lower. Since there are no people in the store at night, which is outside the business hours of the store, it is not necessary to keep the store temperature at 23-26 ° C., which is a comfortable temperature range for people, and a lower temperature may be used. In a supermarket, since the power consumption of a refrigerator is generally larger than the power consumption of an air conditioner, the sum of the power consumption of the refrigerator and the power consumption of the air conditioner becomes smaller as the in-store temperature is lower. Therefore, in a store such as a supermarket, the total power consumption can be reduced by setting the temperature in the store as low as possible at night.

  FIG. 11 is a diagram for explaining the configuration of a composite apparatus in a store, 17 is an outside air temperature / humidity detecting means for detecting outside air temperature / humidity, 24 is an outside air introduction means that is an air supply fan for introducing outside air into the shop, and 25 is an outside air introduction unit. The fan built in the means and others are the same as in FIG. The basic operations of the refrigerator and the air conditioner are the same as described above. A timer is built in the controller 18, and the air conditioner 52 and the outside air introduction means are based on the temperature and humidity information and timer information inside and outside the store detected by the store temperature and humidity detection means 11 and the outside temperature and humidity detection means 17. 24 controls are performed. The air conditioner 52 is allowed to perform a cooling operation except in special cases regardless of the season. The air conditioner 52 has a lower limit of the set temperature, which is referred to as a minimum set temperature. In the Building Pipe Law and Building Standard Law, the standard for indoor temperature management is 17-28 ° C, and in general, 19 ° C during cooling and 17 ° C during heating are the lower limit of control.

  The enthalpy of air inside and outside the store can be easily determined by measuring the temperature and humidity of each. The formula for calculating the enthalpy of air is obtained by: enthalpy i = 0.240 * temperature + (0.431 * temperature + 597.3) * absolute humidity, and the absolute humidity is simply converted from the measured relative humidity. Next, using this enthalpy, as an example of the outside air introduction means, prevention of ventilation heat loss and control of utilization of outside air for air conditioning when a total heat exchanger is used will be described with reference to FIGS. FIG. 12 is a diagram for explaining the operation of the new ventilation air-conditioning system that uses outside air for air-conditioning. The ventilation air-conditioning system is turned on / off according to the time of the season, etc. This shows the operating status such as heat exchange by bypass. In particular, FIG. 12 illustrates daytime operations in a large supermarket, and the upper table in FIG. 12 shows the operation items of heat exchange air passages and ventilation air conditioning operations that are control items, and this operation is illustrated in the lower flowchart. The control flow which shows the situation judged by the enthalpy by the temperature and humidity of indoor air and the enthalpy by the temperature and humidity of outside air is demonstrated. The enthalpy of indoor air is obtained from the air condition set as the target value of the temperature and humidity in the store, and the enthalpy of outside air is used by measuring the temperature and humidity of the outside air. However, it is natural that the humidity may be determined in advance after the season or may be switched each time depending on the weather conditions.

  In FIG. 12, the controlled object is the new ventilation air conditioning, which describes the on / off operation of the supply fan and the exhaust fan and whether heat exchange is performed when this is on. For this operation, the information used includes calendar information such as measured values of outside temperature / humidity, air conditioner operation mode set by the user, set temperature in the air conditioner store, time and holidays. The in-store humidity is set in advance using a personal computer. The operation of ventilation air conditioning is switched depending on whether the enthalpy of indoor and outdoor air is large or small. In order to make this switching stable, hysteresis operation is performed with or without heat exchange. Set. The hysteresis conditions Δi1 and Δi1 are also set in the same manner, and are selected from one unit (1 kcal / kg) or two units (2 kcal / kg) of enthalpy. As a result, control malfunction and hunting can be suppressed. As already explained, the enthalpy of air is obtained by the formula of enthalpy i = 0.240 * temperature + (0.431 * temperature + 597.3) * absolute humidity, and the absolute humidity is measured relative humidity. Alternatively, it can be easily obtained from the stored value.

  In FIG. 1 and others, the configuration in which the indoor unit and the outdoor unit are separated and connected by piping is described, but any configuration may be used as long as the temperature or humidity of the indoor air is changed. A structure that does not separate an indoor unit and an outdoor unit that integrally form an evaporator and a condenser, such as a dehumidifier, may be an air heater such as an oil heater that is combined with an air conditioner for air conditioning. A GHP air conditioner that uses the motor to drive the compressor and uses the engine waste heat to evaporate heat of the refrigerant to obtain the energy effect during heating, compared to a configuration in which the compressor is driven by a motor like a general air conditioner. But it ’s okay. This GHP air conditioner drives a compressor by a gas engine during heating to compress the refrigerant, and this high-temperature refrigerant heats the air indoors. The cooling water superheated by the gas engine and the exhaust gas heat exchanger exchanges heat with the refrigerant in the refrigerant hot water heat exchanger inside the accumulator provided in the refrigerant circulation cycle. On the other hand, in the cooling cycle, the high-temperature refrigerant from the compressor is cooled by outside air in a condenser which is an outdoor heat exchanger, and is cooled by taking heat from indoor air in an indoor evaporator. The configuration and operation of the indoor unit of this GHP air conditioner are the same as those of a general air conditioner using a motor for driving a compressor.

  In the control flow of FIG. 12, it is first determined by the calendar function stored in the microcomputer provided in the controller whether it is a holiday or within business hours and not within the preparation time zone or business hours. The preparation time zone was set up when the temperature of the items and spaces in the store was hot even if the temperature adjustment was suddenly switched between the business hours when customers and employees were present and the time outside the unmanned business hours. Since there is a delay due to a constant, a halfway time is provided to avoid adverse effects on humans.

  If it is within business hours, then the air conditioner operation mode is determined. Usually set by the user with the remote control, but it is possible to change the air conditioning as needed. If the air conditioner is in a stopped state, the bypass and air passages 68 in FIG. 9 are bypassed between the ventilation and exhaust air passages and heat exchange is not performed. In this state, in the daytime, the ventilation fan and the exhaust fan are turned on to introduce fresh air into the store and discharge dirty air.

  When the air conditioner operation mode is cooling, it is determined whether the enthalpy io of the outside air is larger than the enthalpy im obtained from the in-store target air temperature and humidity. At this time, in order to obtain control stability, io> im + Δi1 is set in order to slightly increase the enthalpy of the target value in the store. Here, if the enthalpy of the outside air is smaller than the enthalpy of the target value of the in-store air, io <im−Δi1 and the magnitude of the enthalpy are determined again. Here, if the enthalpy of the outside air is smaller than the enthalpy of the target value in the store, considering the effective use of the outside air, ventilation and exhaust are turned on in a bypass air passage without heat exchange and air conditioning is performed without using the store air conditioner . If the enthalpy of the outside air is larger than the enthalpy of the in-store target value, that is, if the enthalpy of the outside air and the enthalpy of the in-store target value are similar, the heat exchange state until then is continued. On the other hand, if the enthalpy of the outside air is larger than the enthalpy of the target value of the in-store air as determined by io> im + Δi1, the heat exchanger element 63 performs total heat and temperature exchange, and the filter 64, At 65 and 66, ventilation and exhaust are performed as clean air. As a result, the cooling and air conditioning load in the store is increased by the large enthalpy of the outside air so that the energy used by the air conditioner and the refrigerators affected thereby is not increased.

  When the operation mode is set to heating, io <im−Δi1 and the magnitude of enthalpy are determined. If the enthalpy of the outside air is smaller than the in-store target value enthalpy, the heat exchanger element 63 performs total heat and temperature heat exchange, and the air conditioning load is increased by increasing the heating and air conditioning load in the store by the small enthalpy of the outside air. The energy used by the machine is not increased. If the enthalpy of the outside air is larger than the in-store target value enthalpy, io> im + Δi1 is again determined as to whether the enthalpy is large or small. Here, if the enthalpy of the outside air is larger than the enthalpy of the in-store target value, air conditioning is performed by turning on ventilation and exhausting in a bypass air passage in which heat exchange is not performed in consideration of effectively utilizing the outside air. If the enthalpy of the outside air is smaller than the enthalpy of the in-store target value, that is, if the enthalpy of the outside air and the enthalpy of the in-store target value are similar, the heat exchange state until then is continued and the heat exchange operation is not changed. By incorporating such hysteresis in the determination of enthalpy, control malfunction and hunting can be prevented.

  Next, the operation of the new ventilation air conditioning at night will be described with reference to FIG. Outside business hours, here from 22:00 to 9 o'clock, but the enthalpy io of the outside air is the target minimum air temperature in the store where air conditioning is performed, here 19 ° C, but whether it is greater than the enthalpy i 19 ° C obtained from Judging. At this time, in order to obtain control stability, io> i19 ° C + Δi6 is set in order to slightly increase the enthalpy of the minimum target value in the store. As described above, a hysteresis operation is set for the determination of enthalpy and temperature in order to make the switching stable. Similarly, Δi6 which is a condition for the hysteresis is set so that it can be selected from one unit (1 kcal / kg), two units (2 kcal / kg) or three units of enthalpy for setting hysteresis. As a result, control malfunction and hunting can be suppressed. If the enthalpy of the outside air is higher than the enthalpy of the minimum room temperature target value, the air conditioning set temperature is set to the target minimum temperature of 19 ° C for all nine gas engine driven air conditioning indoor units GHP. Cooling operation is performed. The minimum set temperature may be set to a low temperature at which the apparatus can be operated. The lower the temperature that can be operated at a temperature lower than 19 ° C., the lower the energy saving effect. However, it is a matter of course that the set temperature may be slightly higher in the low temperature range. Set the wind speed on your computer. Thereby, the influence on the freezing apparatus arrange | positioned indoors can be made as small as possible, and the total use energy of a freezing apparatus and an air conditioner can be decreased.

  In the case of an air conditioner driven by a gas engine, a gasoline engine is used instead of a motor that consumes electricity. However, if converted by the amount of heat, which is energy, the total energy consumed by gasoline and electricity can be easily and necessary. Depending on the fuel consumption, the total energy price is also possible.

  In FIG. 13, after the determination of io> i19 ° C + Δi6, the determination of io <i19 ° C−Δi6 is performed in consideration of the enthalpy hysteresis. If the enthalpy is a close value, the previous operating state is continued as it is to prevent malfunction. However, even in this judgment, if the enthalpy of the outside temperature is lower than the enthalpy of 19 ° C which is the minimum set temperature, the operation is performed to make effective use of the outside air. In this case, a limiter of the in-store minimum temperature Tmin = 5 ° C. is provided. That is, in the judgment formula Ti <Tmin−ΔT6, if the room temperature Ti is lower than the limiter 5 ° C., all are stopped and the outside air is not introduced. It should be noted that ΔT6, which is a condition for hysteresis, can be selected from one unit (1 kcal / kg) or two units (2 kcal / kg) of enthalpy for the same hysteresis setting.

  If it is determined that the room temperature is higher than 5 ° C which is the limiter in the judgment formula Ti <Tmin−ΔT6, the room temperature is 5 ° C which is the limiter again in the judgment formula Ti> Tmin + ΔT6 as a countermeasure against hunting. If the room temperature is about 5 ° C, it is determined whether the temperature is higher than the previous operating state. When the room temperature is higher than the limiter temperature, the indoor unit is operated as set by the user, and the ventilation air conditioning is switched to a wind path that does not perform heat exchange to supply and exhaust air effectively using the outside air.

  As mentioned above, the outside air introduction means is a combination of an air supply fan and exhaust fan with a total heat exchanger, and the enthalpy for the target value of the outside air and room air is converted from the measured values of the air temperature and humidity. The configuration and the control content of controlling the air conditioner by comparing the size and controlling the air conditioner and performing the operation with less energy consumption of the indoor refrigeration apparatus and the air conditioner have been described. When making this comparison, we decided to calculate the enthalpy because we will strictly compare the energy, but the humidity may not change very much depending on the season, or it may be less affected even if the humidity is almost constant. However, instead of the enthalpy of FIGS. 12 and 13, control may be performed by comparing the set temperature value related to the indoor air conditioning with the temperature value of the outside air. As a result, when the temperature or enthalpy outside the store during summer nights or holidays is higher than a low set temperature that can be achieved by indoor air conditioning, for example, 19 ° C. or the enthalpy at the minimum set temperature, the controller 18 sets the indoor unit of the air conditioner. 52 is operated so that the temperature in the store is at or near the minimum set temperature that can be controlled, and the outside air introduction means 24 is not operated. This keeps the room at a low temperature that can control the air conditioning, and performs an operation that takes in outside air and prevents the load of the refrigeration apparatus from increasing.

  If the temperature or enthalpy of the air outside the store is lower than the minimum set temperature, for example, 19 ° C. or the enthalpy at the minimum set temperature under conditions such as nighttime in winter or unattended, the controller 18 uses the outside air introduction means 24. Is operated to introduce outside air to bring the temperature or temperature / humidity inside the store closer to the temperature or temperature / humidity outside the store. As a result, the outside of the store can be further lowered from the temperature that can be controlled by the air conditioner, and energy can be saved in the refrigeration apparatus. However, in this case, since the inside of the store is not lowered to below 0 ° C. or the like, outside air having a temperature lower than the limiter temperature is not introduced so as not to lower the limiter temperature with a little allowance, for example, 5 ° C. In the middle season, one of the operations described above is selected based on the temperature or temperature / humidity information inside and outside the store. By controlling in this way, the total energy consumption of the refrigeration system and the energy consumption of the air conditioner at night when there are no people in the store can be made as small as possible, and the charges for these inputs can be kept low. Become. The case where two fans for air supply and exhaust are used has been described as an example, but the same effect can be obtained even if only the fan for air supply is installed. However, in the case where only the air supply fan is used, there is a possibility that the pressure in the room is increased, the differential pressure across the air supply fan is increased, and the air supply amount is reduced.

  Next, the energy saving of the dew-proof heater will be described. FIG. 14 is a diagram showing the operating rate of the dew proof heater attached to the showcase 2. The horizontal axis represents the relative humidity of the store air, and the vertical axis represents the operating rate of the dew-proof heater. The temperature of the store air is described as a parameter. Even if the temperature Ti (° C) of the same store air, for example, 20 ° C, the relative humidity φi (%) of the store air is 70% when the dew-proof heater operating rate A is 65%, whereas the relative humidity of the store air is Is the operating rate B of the dew-proof heater at point B of 60% = 35%. Therefore, even if the air temperature Ti (° C) in the same store is lower, the lower the relative humidity φi (%), the lower the operating rate of the dew-proof heater and the lower the heat input due to reduced heater input and heat conduction from the heater to the showcase. Energy saving for refrigeration equipment.

  FIG. 15 is an air diagram often used in the air-conditioning field. The air diagram is a diagram showing the state of humid air, which is general air. The enthalpy i and the absolute humidity x expressed by a linear relationship are obliquely shown. This is a summary of the data related to temperature, etc., assuming that the atmospheric pressure is constant. The enthalpy of the figure is based on the formula explained above. The relationship between absolute humidity and relative humidity, the relationship between sensible heat and latent heat, and the like are also described. If this figure is stored in a microcomputer without using an equation, conversion of relative humidity and absolute humidity and calculation of enthalpy can be easily obtained. A in FIG. 15 shows the temperature and humidity state in the open showcase cabinet, and shows a state in which the freshness of the low temperature and high humidity with the air temperature TR = 5 ° C. and the humidity φR = 100% in the cabinet is maintained. The open showcase is often refrigerated with fish, vegetables, etc. In that case, the refrigeration temperature is low, and it is necessary to maintain the food freshness with a relative humidity of humidity φR = 100%, which is the saturation line in FIG. With respect to this temperature / humidity condition, the temperature / humidity condition of the in-store air that becomes the intrusion air from the air curtain requires a relative humidity of 37% or more when the air temperature at point B in the figure is 20 ° C. That is, in order to maintain freshness, it is necessary to maintain the humidity φR = 100%, and the humidity φi of the store air that becomes the intruding air needs to be equal to or higher than the same absolute humidity when the store air temperature is 20 ° C. Requires a relative humidity of 37% at point B, which is the intersection of this line and the 20 ° C. line.

  Therefore, it is desirable that the target humidity of the store air that is controlled by the air conditioner to approach the target value is as low as possible in order to reduce the operating rate of the dew-proof heater and save energy of the heater. On the other hand, the target humidity of the store air will cause a decrease in the humidity in the cabinet due to the intrusion air of the open showcase, and a certain value or more is required for maintaining the freshness of the food in the cabinet. That is, there is a minimum humidity condition in the store, and this value is determined by the air temperature. That is, there is a condition for maintaining the function of the apparatus against the humidity of the store air. When humidity higher than a certain value for maintaining freshness is not required, energy saving operation may be performed by setting the humidity at which the store visitor does not feel abnormalities due to static electricity as a minimum humidity condition. In addition, the content of controlling the humidity with respect to the target humidity value has been explained, but in order to reduce the operating rate of the dew-proof heater and to save the heater energy, it is set by simply changing the ventilation resistance in the air conditioner or duct It is possible to change the shutter opening / closing angle of the grill, or to provide a damper 22 in the duct to change the wind speed and the amount of air blown into the room. In addition, the filter provided at the air inlet of the air conditioner may be changed from a sparse filter to a dense filter. When changing from summer to winter, that is, in the cooling operation mode, the ventilation resistance is increased. When changing to summer, that is, in the heating operation mode, the ventilation resistance may be reduced. When changing this ventilation resistance, it may be changed with the signal of the air conditioner operation mode, but as a simpler method, the inclination of the grill or damper can be changed manually during maintenance when the season changes, You may replace it with a damper. In this way, when setting the structure to narrow the ventilation hole of the grill when going to summer or changing the filter to a dense one and reducing the area, the wind speed during cooling operation is lower than the heating, and it is an evaporator The rate of heat exchange with the indoor heat exchanger decreases, and the evaporation temperature, that is, the temperature of the indoor heat exchanger also decreases. As a result, the condensation temperature of the outdoor heat exchanger also decreases, the load on the compressor that drives the refrigeration cycle decreases, and the input decreases. At this time, the air temperature is lowered as the evaporation temperature is lowered, the air conditioner blowout temperature is lowered, and at this time, the humidity is lowered, the operation rate of the dew-proof heater is lowered, and the input of the air conditioner is lowered.

  As described above, the control device for controlling the combined refrigeration and air-conditioning air environment that saves energy by combining the refrigeration system and the air-conditioning system is used to determine the temperature and humidity of the in-store air that is a heat load for the refrigeration system. It is possible to perform energy-saving operation by setting target values of temperature and humidity in a direction in which the sum of the input of the refrigeration apparatus and the input of the air conditioner becomes smaller as a parameter of the temperature and humidity of the air. At this time, the temperature and humidity zone of the store air that maintains the original function of each device and human comfort is maintained, and the products that maintain the freshness of the food in the showcase cabinet are arranged side by side.

  FIG. 16 shows a control flow of a control device for controlling a refrigerating and air-conditioning composite air environment that saves energy by combining a refrigerating device and an air conditioning device. When the control operation of the microcomputer of the controller 18 in FIG. 1 is started, the outside air temperature To is detected in Step 101, and the open showcase temperature TR is detected in Step 102. Here, when there are a plurality of open showcase groups, the inside temperature TR having the highest inside temperature is detected. In step 103, an absolute humidity XA is calculated with the internal temperature TR as the dew point temperature. For this calculation, the air diagram data of FIG. 15 may be stored in the management / control unit 41 or a relational expression between absolute humidity and relative humidity may be stored. In step 104, several patterns of in-store air temperatures are prepared between the temperature zones Ti = 24-28 ° C. that are considered comfortable for humans during the summer cooling period. With respect to each temperature Ti, relative humidity φi that becomes absolute humidity XA is obtained as φi = f (XA, Ti) = C, and several patterns are prepared as a set of temperature and relative humidity. In step 105, the input WA of the air conditioner is obtained from the data stored in the air conditioner. This method will be described later. In step 106, the input WR of the refrigeration apparatus is similarly obtained. In step 107, a combination of the store air temperature Ti and the humidity φi that is the smallest of the sum of the input WA of the air conditioner and the input WR of the refrigeration apparatus is selected. As shown in FIG. 17, the data stored in the air conditioner and the refrigerating apparatus used here is a line specific to each of the refrigerating apparatus and the air conditioner according to the evaporator-side intake air temperature, humidity, and the condenser-side intake air temperature. FIG. The horizontal axis TWB (° C.) in FIG. 17 indicates the wet bulb temperature, and is obtained from the air diagram of FIG. 15 or the relational expression based on the dry bulb temperature Ti and the relative humidity φi. These temperatures and humidity are detected by the temperature / humidity detecting means 11. The vertical axis in FIG. 17 is the input W (kw), and as shown in the figure, the input increases as the wet bulb temperature TWB (° C) increases, and the input increases as the outside air temperature To increases. To do. Thus, the calculation at step 105 is obtained as WA = f (Ti, φi, To) from the characteristics of FIG. 17 stored as the air conditioner. The showcase is obtained as WB = f (TR, φR, Ti, φi, To) as in step 106.

  A similar calculation method will be described with reference to FIG. Steps 111 to 114 are the same as those in FIG. However, the preset temperature is used without detecting the temperature in the showcase. In step 115, the wet bulb temperature TiWB (° C) is converted as TiWB = f2 (Ti, φi) from the set of temperature and humidity (Ti, φi) in the store prepared in the previous step. This conversion formula is obtained by formulating the air diagram of FIG. In step 116, the air conditioner input is determined as WA = f3 (TiWB, To) from the wet bulb temperature TiWB (° C.) of the store air and the outside air temperature To. This formula f3 is a formula of the performance data of the air conditioner, and this data is shown in FIG. The horizontal axis in FIG. 19 is the outdoor intake air dry bulb temperature, that is, the intake air temperature of the outdoor heat exchanger 14 and the outdoor air temperature To. The vertical axis shows the input ratio and the capacity ratio, which is the ratio between the rated input (kw) and the rated capacity (kcal / h) of the air conditioner, and the rated value is inevitably determined if the installed device is used. So this vertical axis shows input and ability. As shown in FIG. 19, the input (kw) becomes a predetermined value according to the outside air temperature, but changes as shown in the figure depending on the indoor intake air wet bulb temperature TiWB (° C.). The same performance data can be used for similar models, and when an inverter-driven compressor is used, the performance data changes for each operating range depending on the outside temperature.

  In step 117, the input of the refrigeration apparatus is obtained, and the refrigerator input WB is obtained from the evaporation temperature Te and the outside air temperature To of the refrigerator. Here, the evaporation temperature Te is linked to the showcase set temperature Ts and is determined by the apparatus. However, when the set temperature Ts = 0-10 ° C of the showcase interior air, Te = -10 ° C. The refrigeration unit input WB = f4 (Te, To) in step 117 is determined from the data in FIG. In FIG. 20, the horizontal axis represents the evaporation temperature, and the vertical axis represents the power consumption, refrigeration capacity, and current data. As parameters, the refrigerant types R502, R22, R12 and the condensation unit ambient temperature AT, that is, the outside air temperature To are taken. In the case of a showcase, the evaporation temperature is set to a temperature determined by the apparatus, and the data shown in FIG. Step 118 shows the input WH of the dew-proof heater, which is also calculated as WH = ηh * H from the heater power H determined by the apparatus and the dew-proof heater operating rate ηh. As described with reference to FIG. 14, the dew-proof heater operating rate ηh is determined by other factors such as the store air temperature Ti and the store humidity φi. Thus, the input of the dew-proof heater is obtained by WH = f5 (H, Ti, φi). In step 119, the input WR of the refrigeration apparatus is calculated by the input WR of the refrigerator and the input WH of the dew-proof heater. In step 120, in-store temperature and humidity (Ti, φi) having a small sum of all inputs WA of the air conditioner and all inputs Wb of the refrigeration apparatus are selected from several patterns and output.

  As described above, by detecting only the outside air temperature, the temperature and humidity of the room air, the operation with the least energy can be easily performed with respect to the air in the space where the composite apparatus influences each other like the refrigeration apparatus and the air conditioner. Whatever equipment you are using, you can perform arithmetic processing simply by using basic data such as the rated input of the equipment, so you can add a humidity detection device to a convenience store that is already in operation. By using a simple data of existing equipment and preparing a controller with necessary storage means and calculation means installed in a microcomputer, it can be operated at low cost and with low energy, so it can be adopted in many stores, and big energy saving This is possible and effective as a global environmental measure.

  The explanation of the control in the combined refrigeration and air conditioning environment during the winter heating operation is as follows. FIG. 21 is a diagram illustrating the configuration of each device arranged indoors, which is almost the same as FIG. 1, but the circuit of the four-way valve 15 housed in the outdoor unit 12 of the air conditioner is different. The high-temperature and high-pressure gas refrigerant leaving the compressor 13 is circulated to the indoor heat exchanger 10 via the four-way valve 15 to heat the inside of the store, and the refrigerant is condensed and liquefied and conveyed to the outdoor unit 12. It becomes a low-pressure and low-temperature two-phase refrigerant, evaporates and gasifies in the outdoor heat exchanger 14, and is again sucked into the compressor 13 via the four-way valve 5. Fig. 6 explains the coefficient of performance of the air conditioner. During the winter heating operation, the outdoor heat exchanger is an evaporator, and when the intake air temperature Tei of the evaporator, that is, the outside air temperature To is near 0 ° C, condensation occurs. The coefficient of performance becomes better and the input becomes smaller as the container-side intake air temperature Tci, that is, the in-store temperature Ti is lower than the point 30 ° C. of B2 in FIG. 6 as the point 20 ° C. of B1.

  On the other hand, the refrigeration apparatus operates in the same manner because the temperature of refrigeration and freezing does not change year-round regardless of summer or winter, and the lower the temperature and humidity in the store, the smaller the input. From this fact, it is understood that the set temperature in the store that minimizes the sum of the input of the refrigeration apparatus and the input of the air conditioner during the winter heating operation may be set to the lowest temperature in the temperature zone in which humans feel comfortable. Furthermore, if this is set by the rotational speed of the indoor fan, the input is lowered by lowering the temperature of the airflow blown from the fan.

  FIG. 22 is a block diagram of a system for explaining an example different from FIG. It is an input detection device of an air conditioner that detects an electrical input of the compressor 13 housed in the outdoor unit 12 of the device 52.

  The controller 18, which is a combined refrigeration and air-conditioning environment control device, sets the preset temperature Ti of the in-store air during the summer cooling operation or changes it from the outside and sets it within a temperature zone that is comfortable for humans. The sum of the detected values of 31 is obtained, and a small value is continuously selected while continuing the actual operation so that the sum value becomes the minimum value. In winter heating operation, the lower temperature in the temperature zone that humans feel comfortable is set as the air setting temperature in the store. In this way, if the summer and winter settings, that is, the method of setting the temperature setting values for the cooling operation and the heating operation are changed in advance, a control device for operation with less energy can be achieved with a simpler method and configuration. In this way, since the controller can be provided, for example, using a refrigeration apparatus or a microcomputer of an air conditioner, the effects of the present invention can be obtained with a simple structure. Moreover, since the compressor input directly connected to the load is directly measured, the influence of other elements does not enter, so the change in the load can be clearly understood, and how much energy saving effect is obtained by the control of the present invention is accurately grasped. Can be easily distinguished from other measures.

  As described above, the technology for obtaining energy saving with respect to the composite apparatus has been described. However, this effect can be obtained particularly in the case of a store operating continuously for 24 hours like a convenience store. However, even in stores that do not operate 24 hours a day, such as supermarkets that operate many refrigeration units and many air conditioning units at the same time, devices that affect each other through this space coexist, that is, only in the same room in a large space. For example, in an environment where the heat and cold affect each other, such as in a building or other room where the temperature and humidity of the air is in the same state by operating through the duct ventilation or using the same centralized control device Needless to say, it is effective. Furthermore, at a tempo such as a supermarket that does not operate 24 hours a day, as described above, it is possible to take energy saving measures by utilizing the unattended state at night.

In the above description, the cold heat generated by the refrigeration apparatus arranged indoors is considered as a load of room air, and some examples of air conditioning of the room air have been described. However, the room air 20 entering the showcase of FIG. When the load is small or the load is small in each refrigeration apparatus, the input of the refrigeration apparatus can be lowered by reducing the capacity of the compressor 6 that generates the cold heat of the refrigeration apparatus. It affects the input of the air conditioner from the air conditioning load. If there are few changes in external factors such as people coming in and out of the store and changes in the outside air temperature, the control of the present invention will settle down when the total input of the composite device is small. However, if the capacity of the compressor of the refrigeration system is changed greatly, temperature fluctuations occur, and this hunting causes unnecessary operation in the entire composite apparatus and uses extra energy.

  FIG. 23 shows a configuration diagram of the refrigeration apparatus. In FIG. 23, 101a is a compressor, 101b is a compressor motor that drives the compressor, 102 is a condenser, 103 is a pressure sensor that measures the pressure of refrigerant gas sucked into the compressor, and the refrigerator 101 is connected to these. Composed. A plurality of showcases 106 connected to the refrigerator 101 through the refrigerant pipes 107 are provided with an electromagnetic on-off valve 108, an expansion valve 108a, and an evaporator 109. The inside of the case is cooled. 110 is a showcase controller which is provided in the showcase and opens and closes the electromagnetic valve 108 based on information on the showcase controller internal temperature 112, and 105 is a compressor inverter based on the information on the capacity control internal temperature 113. This is a capacity control device that is an inverter controller that controls the capacity variable device 104.

  The refrigerant discharged from the compressor 101a and condensed in the condenser 102 is supplied in parallel to the respective evaporators of the plurality of showcases via the refrigerant pipe 107. Each showcase is provided with an electromagnetic valve and an expansion valve for individually turning on and off the refrigerant supply, and the supply of the refrigerant can be individually stopped according to the temperature with respect to the target temperature in the warehouse of each showcase. The showcase controller 110 may detect that the pressure sensor 103 has become a low pressure in addition to the inside temperature, and turn on and off the solenoid valve. However, the showcase solenoid valve is turned on and off to keep the inside temperature constant. In order to repeat the process, the flow of the refrigerant and the temperature in the cabinet are hunting, and wasteful energy is used. Note that a plurality of showcases may be used as a showcase group to control the representative temperature of any group.

  Next, control of such an inverter driven refrigerator will be described. When the compressor 101a starts operation, the capacity control device 105, which is an inverter controller, outputs a startup rotation speed setting signal to the capacity variable device, which is an inverter, and also shows the measured internal temperature 113 of the showcase 106. The temperature information is taken in by the signal line. The preset temperature other than the temperature information, the closing operation point of the electromagnetic on-off valve 108, the temperature adjustment differential that is the control range of the temperature inside the showcase 6 and the target temperature of the inverter control are stored in advance in the microcomputer of the inverter controller 105, Or it can take in indirectly from temperature information. The inverter controller 105 controls the operating capacity of the compressor so that the temperature deviation between the internal temperature in the showcase and the set temperature becomes small. On the other hand, the showcase controller 110 closes the electromagnetic on-off valve 108 to stop the refrigerant flow when the inside temperature of the showcase 106 falls to the electromagnetic on-off valve closing operation point based on the temperature information on the showcase in-case temperature 112. The cooling operation of the case 106 is stopped. When the cooling operation is stopped and the internal temperature rises and reaches a level that is increased by the temperature adjustment differential that is the control width of the internal temperature from the closing operation point of the electromagnetic on-off valve, the control is performed to open the electromagnetic valve 108 and the refrigerant is circulated. The showcase 106 is cooled. The temperature adjustment differential is, for example, about 2 ° C.

  A plurality of showcases 106 are provided, and each showcase performs the defrosting operation by individually closing the solenoid valves so that the heater capacities for the defrosting operation do not overlap. In many cases, the capacity of equipment and the contents of equipment vary. In general, an electromagnetic valve is required to stop the operation of a specific showcase, and the temperature is adjusted only by opening and closing. However, when the electromagnetic opening / closing valve 108 is closed, the supply of refrigerant is stopped. The stopped showcase evaporator 109 is in a state in which only the outlet of the refrigerant is opened, and when viewed from the compressor 101a, it is in a kind of evacuation state in which the refrigerant in the evaporator 109 is sucked into the refrigerant cycle. When viewed from the whole, the suction gas pressure with respect to the compression is lowered in a state where the refrigerant passage is narrowed, and the compressor is controlled so that the pressure sensor 101a stops the reduction when the suction gas pressure becomes lower than the set pressure. In such feedback control, fluctuations for obtaining the average temperature are large, and waste such as excessive cooling and loss of compressor start / stop increases.

  Therefore, in FIG. 23, the internal temperature is detected by the detector 113, and the compressor 104 is controlled by controlling the inverter 104 so as to approach the target temperature of the inverter control to increase or decrease the rotational speed of the compressor driving motor. It is possible to perform energy-saving operation that eliminates unnecessary start and stop. However, in this control, it is necessary to set the target temperature of inverter control to a temperature higher than the closing operation point of the electromagnetic on-off valve, and the difference between the target temperature of inverter control and the temperature of the closing operation point of the electromagnetic on-off valve is small. If the temperature drops rapidly due to the cooling of the evaporator 109 of the showcase 106, the electromagnetic on-off valve 108 is closed before the motor speed control is performed or before the effect appears, and the temperature difference in the chamber is reduced. The state of great change continues. On the other hand, for example, when the set temperature of the closing point of the electromagnetic on-off valve is -1 ° C, the set temperature of the opening point of the electromagnetic on-off valve is 1 ° C, and the target temperature setting value is 1.5 ° C. If there is a gap between the on / off valve closing operation point and the target temperature setting value for inverter control, the inverter control operation can be prioritized over the electromagnetic on / off valve operation, resulting in smooth internal temperature changes and input fluctuations. You can suppress useless driving.

  By performing such control, frequent opening / closing of the electromagnetic on-off valve is eliminated, temperature fluctuation is reduced, energy saving is achieved, and the device life is not reduced. Especially for refrigeration equipment that performs cooling by operating a compressor at a constant speed, and for refrigeration equipment that detects changes in pressure based on the opening / closing operation of an electromagnetic on-off valve and performs control to change the rotational speed of the compressor. Not only when an inverter device that changes the frequency of the voltage applied to the compressor motor based on the temperature difference between the detected temperature and the set value so that the target temperature is detected when the showcase device is newly installed. By adding an additional inverter device to the existing equipment, that is, an internal temperature detection device, a capacity control device that controls the inverter in response to this temperature information, an inverter circuit that drives the motor by this control, and Wired or wireless communication means that adds a temperature sensor to detect the temperature in the chamber and sends temperature information from the temperature sensor to the inverter as a signal Performs expansion work of providing further the inverter control by performing the operation to override the control of the solenoid valve, it is possible to greatly reduce the input of the refrigeration system. Further, if the temperature or humidity in the room is controlled to be lower than the normal living environment value by an air conditioner installed in the room or other means, the input of the refrigeration apparatus can be further reduced. In this way, before the compressor motor starts and stops, the inverter adjusts the temperature by reducing the rotation speed of the compressor, so the input of the refrigeration system can be lowered smoothly without significant fluctuations, and the input of the air conditioner If you change the temperature setting value of the air conditioner in such a direction that the total of the input decreases as a result of the input fluctuation, the operation will be performed. Since it is possible to prevent the fluctuation of the input from adversely affecting the delay, it is possible to perform an energy saving operation with few malfunctions by a simple method.

Embodiment 2. FIG.
Next, a combined device of the lighting device and the air conditioner will be described. FIG. 24 is a diagram illustrating a control configuration for the lighting device, 41 is the management / control unit described in FIG. 5, 72 is an external lighting device that is outdoor lighting, and 93a is connected to the management control unit 41 through an interface 72a. Temperature detection means, 77 is an in-store lighting device that is indoor lighting, and 93b is temperature detection means connected to the management control unit 41 through an interface 77a. FIG. 25 shows an electric circuit diagram from the power source for the composite apparatus. 93 is housed in a distribution board 80, and a current detecting circuit 97 and a voltage detecting circuit are respectively supplied to a three-phase 200 volt power source 91 and a single-phase 200 volt power source 92 98 is a power consumption measuring device connected to measure power, 86 is an inverter that is a power source of a motor 85 that drives a compressor used in an air conditioner, 87 is a switch circuit, 88 is a rectifier circuit 90 and a power source 91 is switched. A charge / discharge circuit 84 for supplying power from a battery serving as a power source to a load is another cooling / heating device, for example, a microwave oven disposed in a store. FIG. 26 is a diagram for explaining the change in brightness depending on the ambient temperature of the fluorescent lamp used in the lighting device. The horizontal axis represents the ambient temperature of the fluorescent lamp and the vertical axis represents the change rate of the brightness. In the case of a fluorescent lamp, since the mercury vapor pressure in the glass tube changes depending on the ambient temperature, the light generation efficiency changes and the luminous flux changes. This rate of change is shown in FIG.

  Next, the operation of FIG. 24 will be described. As shown in FIG. 2, the external illumination device 72, which is an outdoor illumination, covers the fluorescent lamp housed inside with a cover that allows light to pass through, and the lower part of the cover is open so that air can circulate. There is also a hole for venting air so that heat does not accumulate inside. A temperature detecting means 93a for detecting the temperature around the fluorescent lamp is disposed inside the cover. Further, as shown in FIG. 2, the in-store lighting device, which is indoor lighting, has a large number of exposed fluorescent lamps arranged vertically and horizontally, and is fixed in such a manner that it protrudes into the room with a slight space from the ceiling surface. On the ceiling surface, not only this lighting device but also an air conditioner 76 is provided to suck in indoor air and blow out air that has been air-conditioned. Although a sensor may be separately provided for detecting the air temperature around the fluorescent lamp of the in-store lighting, a signal from the temperature detecting means 11 for detecting the suction temperature of the air conditioner is used here. In the case of an air conditioner such as an air conditioner, the air inlet is usually provided near the ceiling, so that it can be used in combination. Signals are sent from the temperature detection means 93a, 93b for detecting the ambient temperature of the fluorescent lamps of the outdoor lighting device 72 and the in-store lighting device 77 to the management / control unit 41 via the interfaces 72a, 77a. . The operation of the management / control unit 41 and the operation through the telephone line are the same as those described above.

  In FIG. 25, there is an external power source 91 supplied from an external power company of a three-phase 200V first as a power source for the motor 85 that drives the compressor 13 of the air conditioner 52. Large phase air conditioners and refrigeration units generally use a three-phase 200 volt power source. The AC rotation from the AC power source is rectified by a rectifier circuit 88a and converted to DC as a voltage having a frequency necessary to bring the room temperature close to the room temperature setting value by an inverter 86a. It is done. When electric power is not supplied to the motor 85, electric power from the power source 91 is supplied to the battery 90 by charging the charge / discharge circuit, and the battery 90 is charged. In the time zone in which the power consumption is greatest in the store, the external power supply 91 is disconnected to reduce the power of the three-phase power supply, that is, as a peak cut. When this supply is not present, the switch circuit 87a is connected to the inverter from the battery 90, and the motor is driven by controlling the inverter.

  On the other hand, power is supplied to the lighting device 77 through a single-phase 200V external power source 92, a switch circuit 87c, a rectifier circuit 88b, and an inverter 86b. The inverter 86b changes the voltage to the illumination device 77 in accordance with the temperature of the temperature detection means 93b of the illumination device. This external power supply 92 uses single-phase 200V, which can be used for either single-phase 200 volts or single-phase 100 volts, but also supplies power to household appliances other than lighting, such as a microwave oven. In the time zone or season when the external power supply 92 becomes expensive due to a contract or the like, or the amount that can be used is limited, the switch from the battery 90 is used to reduce the power of the single-phase power supply, that is, to save the electricity bill. The direct current through the circuit 87b is supplied to the lighting device. At this time, the switch circuits 87c and 87a are cut off and the charge / discharge circuit is switched to the state of discharging. The difference between the voltage of the battery and the lighting device is adjusted by the inverter.

  In FIG. 25, it is natural that direct current may be supplied from the external power source 91 to the lighting device 77 through the switch circuits 87a and 87b without using the battery as a power source. In the configuration of FIG. 25, the inputs of the three-phase external power supply 91 and the single-phase external power supply 92 are measured by the power consumption measuring means 93 by the current sensor 97 and the voltage sensor 98, respectively. As described above, the power on the external power source 91 side includes a compressor motor, that is, an input of an air conditioner or a refrigeration device, a charge input to a battery, etc. These power consumptions are included in the total power on the power supply 91 side. Further, as described above, the electric power on the external power source 92 side is supplied to the in-store lighting device 77 and other home appliances such as the microwave oven 84. These power consumptions are included in the total power on the external power supply 92 side. At this time, the amount of power is measured for each block of each device or for each type of power supply.

  FIG. 26 shows the relationship between the ambient temperature and the change rate of brightness in the fluorescent lamp, and the change rates of the two types of fluorescent lamps are indicated by a solid line and a broken line. The outdoor lighting needs to be bright for advertising of the store, and it is necessary to irradiate the product with a sufficiently bright light beam in the store. In the example of FIG. 26, the temperature is lower than 20 degrees or 30 When it is higher than the degree, the total luminous flux is decreased by several% or more. When the temperature is lowered by an external lighting device, the image is lowered by several tens of percent to give a dark impression. Also, when the heat is trapped by the heat radiation of the fluorescent lamp, it becomes dark as the temperature rises. Conventionally, as a countermeasure, the required number of illuminations and the ability to increase the illumination to secure the necessary illuminance even if the temperature becomes too high or too low. However, as described with reference to FIG. The temperature can be controlled within a certain range by providing an opening in consideration of the air flow in the cover of the external lighting. Further, the brightness of the illumination can be changed by changing the voltage applied to the illumination device 77 by the inverter 86b of FIG. In the case of a fluorescent lamp, the power and the total speed of light increase or decrease in proportion to the power supply voltage. That is, if the temperature around the fluorescent lamp is measured, a certain illuminance, that is, brightness can be maintained according to this temperature. As a result, it is not necessary to make useless illumination.

  In addition, when the brightness is not so required due to the surroundings, such as at a midnight time at a convenience store, the voltage of the outdoor lighting can be lowered in accordance with the decrease in temperature. If the room temperature during indoor cooling is set higher during the midnight hours, or the room temperature during indoor heating is set slightly lower during the midnight hours, either Also in this case, the temperature value of the air conditioner and the brightness of the lighting device can be adjusted simultaneously by detecting the temperature by lowering the voltage value applied to the lighting device, that is, double energy-saving operation can be performed finely. In this way, a combined device of air conditioning and lighting can be performed simultaneously. In addition, the setting of such an operation method can be achieved by simply setting the temperature in advance in accordance with the season and time zone in the operation algorithm of the management / control unit 41 and the operation mode such as heating or cooling. The total input can be controlled so that unnecessary energy is not used while maintaining the original roles of the air conditioner and lighting. In conventional stores, lighting devices with sufficient margin, such as increasing the number and capacity to keep the brightness above a certain level even when the temperature is cold or too high, are provided with an illuminance sensor. In the case where the brightness becomes brighter than this while ensuring the thickness, the input voltage to the lighting device can be lowered to eliminate waste. In other words, the illuminance sensor plays the role of temperature detection means of the lighting device, and the lighting effect that reliably satisfies the customer by double detection of the suction temperature of the air conditioner, that is, the temperature of the indoor air. Can be obtained.

Embodiment 3 FIG.
In FIG. 25, external power sources 91 and 92 are different types of power sources. In addition to having different types of power supplies supplied from the outside, batteries, solar cells, fuel cells, and the like can be provided as internal power supplies. When power is supplied from a plurality of power supplies, a plurality of devices that consume electricity as a load are connected to the power supply, as shown in FIG. 25, and each wiring, switch, voltage, etc. are adjusted, such as a rectifier circuit or an inverter. It is necessary to switchably connect through an electric circuit such as a circuit. In this invention, when connecting between such a power supply and the device, when there are a plurality of types of external power supplies, different contract forms are often adopted, and each individual power amount is measured and each individual power supply is measured. Applying the operation algorithm described above according to the measured individual power and the total power, each device operates with less energy to reduce the power consumption, and It is possible to switch to a type of power that is easy to handle. That is, since a plurality of types of power supplies are provided so as to be switchable, the power supply that provides the cheapest electricity bill can be selected. With multiple types of external power sources, you can contract with different power companies, use contracted electricity that is cheaper depending on the time of day, use contracted electricity that is cheaper depending on the season, and depending on the amount of contracted power When there is a restriction, unlike this contract, it means a power source that uses electricity of a contract that can avoid the restriction.

  The power consumption measuring means 93 measures the power consumption for each type of power source and determines which external power source is to be used and whether to use the internal power source with various batteries as the power source. And a selection to switch the circuit described in the fifth embodiment may be performed by evaluating with an operation method preset and stored in the management / control unit 41. By setting the contract conditions such as electricity charges according to time and season, capacity restrictions, etc. in the microcomputer in advance and making this setting changeable from the outside, the electricity charge according to the amount of power changes depending on the price of oil, etc. In such a case, the calculation of the electricity bill can be immediately changed, and if the switching of the electric circuit is selected by the electricity bill, the cheaper one can be selected. Such a configuration enables more efficient operations such as operations that do not waste the contract power consumption and countermeasures during peak hours. Rather than simply selecting the direction of lower total power as the operation algorithm, the energy consumption cost, which includes other energy equivalent to calorie conversion, that is, the amount of energy consumed for each type of energy and the usage fee per unit energy for each type of heat source Since the one with the lower cost is selected, it is necessary to calculate according to the contract conditions such as the season and the time zone according to the type of power source and heat source. In the present invention, in consideration of mutual influences, the control that was previously considered only as the control of each individual device was considered as a composite device from the aspect of individual power and total power, and the operation was considered to reduce energy together. Is. In addition, since there are multiple types of different power sources and the most effective use of electricity in the region appears in the contract and voltage differences when supplying power from the outside, the electricity bill and limited capacity indicated in this contract, etc. Can be switched. That is, the present invention proposes a device and method effective as a global environmental measure through the operation of a complex device that influences each other from energy saving of individual devices. In other words, it is possible for society as a whole to adopt household electric appliances and facility equipment in a direction with less energy by operating methods that include not only thermal effects but also mutual effects as the amount of power supplied from the outside. I can do it. Furthermore, for each device used in the electrical circuit connected to the power supply that supplies this load, one that consumes electricity, such as an inverter, becomes one of the devices, and power consumption is measured including this amount of power. Since the measurement is performed by the means 93, the most effective energy saving or inexpensive electricity bill can be obtained.

  As described above, in the present invention, when the combined device coexists in the space where the input of the refrigeration device and the input of the air conditioning device are summed by the microcomputer and the set temperature or set humidity is changed, this set temperature is changed over time. It is also possible to make it. Also, in this invention, even when many devices such as refrigeration equipment, air conditioning equipment, and lighting equipment coexist in a state where they affect each other thermally and electrically, there are individual measures for energy saving measures and inexpensive electricity bills. However, it is possible to measure the amount of individual electric energy, for example, by measuring the amount of each individual electric power. In addition to summing the input of the device and the input of the air conditioner, changing the set temperature or set humidity to select the set value in a direction that reduces the total input, so that stable energy reduction can be achieved with a simple configuration, and again It is possible to eliminate wasteful electricity bills not only between devices that have thermal effects but also between devices where power and electricity costs are summed with the same wiring, and there is also waste that the effects of both are superimposed Because it divided to allow significant savings. In addition, as explained at stores, etc., devices that are used in general buildings and residences such as offices are installed in spaces that have thermal effects on each other, or devices that use the same wiring to exchange power. It is natural that the present invention that eliminates waste is effective if it is between, that is, waste of energy and waste of electricity as a whole is omitted, and individual houses, individual stores, individual buildings, individual factories, It can be used to protect the global environment, such as by switching the type of external power supply in each region and easily allowing the power of the combined device to be used, so that existing power facilities can be used effectively. Of course.

    As described above, the composite apparatus according to the present invention is a refrigeration apparatus that is placed indoors to store a low-temperature storage product, an air conditioner that performs indoor air conditioning, and a temperature setting value of an air conditioner that is a target for indoor temperature or air conditioning. Temperature / humidity setting means for changing the speed or volume of air blown into the room of the device, and selecting the change in the direction in which the sum of the input of the refrigeration device and the input of the air conditioning device is reduced, so that the influence of the temperature and heat in the indoor space is reduced. Including energy savings can be obtained easily.

The composite apparatus according to the present invention includes a refrigeration apparatus that is placed indoors to store a low-temperature storage product, an air conditioner that performs indoor air conditioning, and an indoor input that reduces the total of the input of the refrigeration apparatus and the input of the air conditioner. Since the control means for adjusting the temperature and humidity is provided, control including the influence of the mutual temperature and humidity becomes possible.

In the composite apparatus according to the present invention, the refrigeration apparatus and the air conditioner have separate heat source cycles for generating heat and cold, and the sum of the input of the refrigeration apparatus and the input of the air conditioner includes the sum of the respective inputs of the heat source cycle. Therefore, a large energy saving effect can be obtained including a large portion of input used.

In the composite device according to the present invention, the showcase opening part of the refrigeration apparatus or the main body door part of the freezer is arranged in the room, and the air-conditioning apparatus is arranged in the room with the blowing part that blows out air that has been air-conditioned by the heat pump system. A large energy saving effect can be obtained including the portion where the mutual influence between the devices is the largest through the air.

The composite apparatus according to the present invention includes a refrigerator in which a showcase opening of a refrigeration apparatus or a main body door of a freezer is arranged, and a room in which a blowout part for blowing out air that has been air-conditioned by a heat pump system of an air conditioner is arranged, and a refrigeration apparatus Temperature and humidity setting means for detecting the input of the air conditioner and the input of the air conditioner, and setting the indoor temperature or humidity so that the total input becomes a predetermined value or less, the outdoor air introducing means for introducing the outdoor air into the room, and the indoor temperature Alternatively, since the air conditioner or the control means for controlling the outside air introduction means is detected so that the humidity is detected and the temperature or humidity set by the temperature setting means is provided, a large energy saving effect can be obtained with a simple configuration.

The composite apparatus according to the present invention can be operated flexibly because the temperature setting value or the setting of the wind speed or amount of air blown into the room can be changed by communication from the outside.

As described above, the composite apparatus according to the present invention is provided in a room in which cold heat is supplied from the opening of a freezer that stores food, indoor temperature / humidity detection means for detecting the indoor temperature and humidity, and indoor temperature. An air conditioner that adjusts the humidity relative to the indoor temperature so that the indoor humidity detected by the humidity detecting means is equal to or higher than the absolute humidity corresponding to the dew point of the temperature in the refrigerator housing the food in the refrigerator. The temperature and humidity of the air is maintained in the target temperature and humidity zone that is the setting range, and the control device that sets the temperature and humidity that is the target value, and the input of the refrigeration system and air conditioner that measure the target value little by little Therefore, the energy can be reduced for indoor air including humidity.

The composite apparatus according to the present invention adds the input of the refrigeration apparatus and the input of the air conditioner, and changes the set temperature or set humidity, or the set value of the blown air speed or the air volume, which is a target value to be changed gradually. Since the set value is selected in such a direction that the total input becomes smaller, stable energy reduction can be achieved with a simple configuration.

The composite apparatus according to the present invention sets a target set value for an air conditioning room to a high temperature in a preset target temperature / humidity zone during cooling, and in a preset target temperature / humidity zone during heating. Since the temperature is set at a low temperature, a large energy saving effect can be obtained without impairing comfort in stable driving.

The composite apparatus according to the present invention includes an outside air introduction unit that introduces outside air into the room and an outside air temperature / humidity detection unit that measures the temperature and humidity of the outside air. Since the set temperature or set humidity of the air conditioner or the wind speed or the amount of air blown out is changed based on the calendar information, energy saving can be easily obtained without excessive operation.

The composite apparatus according to the present invention includes an outside air introduction unit that introduces outside air into the room, and an outside air temperature / humidity detection unit that measures the temperature and humidity of the outside air. Since the target temperature / humidity zone, which is the temperature / humidity range of the indoor air maintained by the air conditioner, is adjusted based on the calendar information, comfort can be maintained and energy saving can be easily obtained.

The composite apparatus according to the present invention includes an external air introduction unit that introduces outside air into the room, and an outside air temperature / humidity detection unit that measures the temperature and humidity of the outside air, and the measured enthalpy of the outside air. Calculate and compare the enthalpy of indoor air and the enthalpy of outside air to operate and stop the outside air introduction means, and stop the operation of the outside air introduction means within the range where the room temperature does not reach the lowest temperature causing problems such as freezing. Since the temperature limiter is provided, the outside air is effectively utilized and the problem of icing in the indoor device is eliminated.

The composite apparatus according to the present invention includes an internal temperature detection means for detecting the internal temperature of the freezer that is disposed indoors and supplies cold heat at a temperature lower than the indoor temperature, and an internal temperature detection means in which the internal temperature detection means is set. A refrigerant circulation shut-off means provided in the refrigeration apparatus for shutting off the circulation of the refrigerant for supplying cold heat to the inside with an on-off valve when a target temperature of 1 is reached, and a temperature higher than the first target temperature. A capacity control device that controls the rotational speed of the compressor provided in the refrigeration apparatus to be small when the temperature in the refrigerator reaches a certain second target temperature, and controls the first so as to suppress fluctuations in the temperature in the refrigerator. Since the temperature difference between the target temperature and the second target temperature is set, useless operation in the refrigerant cycle is prevented, and temperature changes in the refrigerator can be suppressed.

The operation method of the composite apparatus according to the present invention includes an air temperature / humidity detection step for detecting and storing the temperature and humidity of the indoor air and the temperature of the outdoor air that are air-conditioned by the air conditioner, and a refrigeration apparatus for storing food having an opening in the room Calculating the absolute humidity with the internal temperature as the dew point, and calculating the input of the air conditioner from the temperature and humidity stored in the air temperature and humidity detection step. The temperature of the room air that is smaller than the sum of the inputs and the humidity relative to the temperature of the room air that is selected to be higher than the absolute humidity is set as the target value for the operation of the air conditioner Energy reduction can be achieved for indoor air including humidity while maintaining the freshness of the food to be stored.

The composite apparatus according to the present invention includes an illuminating device that is arranged near the ceiling of the room and rectifies an alternating current and is supplied with electric power via an inverter to illuminate, and air that is arranged indoors and is air-conditioned indoors near the lighting apparatus. An air conditioner to be circulated, a temperature detection means for measuring an air temperature circulating around a room around the illumination apparatus, and an inverter according to the ambient temperature of the illumination apparatus detected by the temperature detection means Therefore, it is possible to reduce the energy without affecting the performance with a simple configuration.

The composite device according to the present invention includes an illumination device that is arranged near the indoor ceiling and rectifies alternating current and is supplied with electric power via an inverter to perform illumination, and an air outlet that is arranged near the indoor ceiling and is air-conditioned into the room. An air conditioner that blows out the air, temperature detection means that measures the temperature of the air that circulates around the interior of the lighting device, and covers a portion of the air that blows from the air outlet. A ventilation guide that flows along the vicinity of the ceiling and leads to the illuminating device, and circulates air through the illuminating device to keep the temperature around the illuminating device detected by the temperature detecting means within a range that ensures a certain brightness. Therefore, it is not necessary to use a simple structure and useless lighting.

In the composite apparatus according to the present invention, the air temperature circulating in the room surrounding the lighting apparatus is suppressed to a range of 20 ° C. to 30 ° C., so that necessary illuminance can be easily ensured and energy can be reduced.

The composite device according to the present invention covers a lighting device that is provided outdoors and illuminates, and has a cover provided with holes in the lower and upper portions so that heat does not accumulate inside the lighting device by circulating air, Provided with a temperature detecting means for detecting the temperature around the lighting device, and a control means for changing the brightness applied by changing the voltage applied to the lighting device with an inverter, according to the temperature detected by the temperature detecting means. Since the inverter is controlled to keep the lighting device at a certain brightness, the necessary illuminance can be secured outdoors and energy can be reduced.

Since the composite device according to the present invention reduces the voltage of the inverter in accordance with a decrease in the temperature around the lighting device during a specific time period, energy saving can be easily achieved.

A composite device according to the present invention includes a heat generating device that generates cold or high temperature heat, an air conditioner that cools or heats the room in which the heat generating device is disposed, and an illumination that is disposed in an upper portion of the room. An illuminating device, an electric circuit connecting means capable of connecting at least two types of heat generating device, air conditioning device, and lighting device to a plurality of types of power supplies; and at least two types of heating device, air conditioning device, and lighting device An arithmetic device that totals the power consumption of the device, and when the total power consumption reaches a predetermined value, switch the electrical circuit connection between at least one device and one type of power supply to another type Because it is connected to a power source, it is possible to select a power source with less electricity bill.

The composite device according to the present invention is a device that generates cold or high temperature heat, an air conditioner that cools or heats the room in which the heat generating device is disposed, and an illumination that is disposed in the upper part of the room. And an electric circuit connecting means capable of connecting at least two kinds of devices, ie, a heat generating device, an air conditioner, and a lighting device, to a plurality of types of power supplies, and at least two types of the heat generating device, the air conditioner, and the lighting device The power supply to which the above devices are connected can be connected to another power supply during a preset time period, and a cheap power supply can be easily selected regardless of the contract.

The present invention can be used to control the air temperature and humidity of a space where a refrigeration apparatus and an air conditioner coexist, such as a supermarket or a convenience store.

DESCRIPTION OF SYMBOLS 1 Food store, 2 Showcase, 3 Evaporator, 4 Outdoor unit of freezing apparatus, 5 Condenser, 6 Compressor, 7 Expansion apparatus, 8 Dew-proof heater, 9 Air curtain, 10 Indoor heat exchanger of air-conditioning apparatus, DESCRIPTION OF SYMBOLS 11 Temperature / humidity detection apparatus, 12 Air conditioner outdoor unit, 13 Compressor, 14 Outdoor heat exchanger, 15 Four-way valve, 16 Expansion device, 17 Outdoor air temperature or temperature / humidity detection means, 18 Controller, 20 Intrusion into showcase Airflow, 21 Indoor fan, 22 Damper, 23 Ventilation guide, 30 Refrigeration unit input detection device, 31 Air conditioner input detection device, 32 Microcomputer, 33 Communication means, 34 Modulation / demodulation means, 35 Coupling means, 36 Communication interface, 37 Communication Interface, 38 microcomputer, 39 modem, 41 management Control device, 42 communication line, 43 control unit for air conditioning device, 44 control unit for refrigeration device, 45 control unit for showcase, 46 telephone station, 47 service center, 51 management / control unit, 52 air conditioner, 53 refrigerator, 54 Showcase, 55 Ventilation fan, 56 Lighting, 57 Control panel, 58 Room temperature sensor, 59 Outside air temperature sensor, 60 Communication port, 71 Building, 72 External lighting device, 73 Open / close door, 74 Glass wall, 75 External wall, 76 Air conditioner Indoor grill, 77 Indoor lighting device, 78 Public telephone, 80 Distribution board, 81 Power line, 82 Ventilation fan, 83 Duct, 84 Microwave oven, 85 Motor for compressor, 86 Inverter, 87 Switch circuit, 88 Rectifier circuit, 89 Charging Discharge circuit, 90 battery, 91 three-phase 200 Power supply, 92 Single-phase 200V power supply, 93 Power consumption measuring device, 95 Pattern, 96 Piping, 97 Current sensor, 98 Voltage sensor, WA Air conditioning input, WR Refrigeration input, WS showcase input, Ts Store temperature setting value, φs Store humidity Set value, To outdoor temperature, Tos showcase temperature setpoint, Ti store temperature, φis store humidity, TR showcase temperature, φR showcase temperature.

Claims (7)

An illuminating device arranged near the ceiling of the room to rectify alternating current and to be supplied with electric power via an inverter to illuminate; an air conditioner that circulates air conditioned to the room and circulates in the vicinity of the illuminating device; A temperature detecting means provided around the lighting device for measuring an air temperature circulating in the room around the lighting device, and according to the temperature around the lighting device detected by the temperature detecting means. And a control means for controlling an input to the lighting device by an inverter. An illuminating device that is arranged near the indoor ceiling and rectifies alternating current and is supplied with electric power via an inverter to perform illumination; an air conditioning device that is arranged near the indoor ceiling and blows out air-conditioned air from the outlet; A temperature detecting means provided around the lighting device for measuring the temperature of air circulating in the room around the lighting device; and a part of the air blown from the outlet covering the outlet of the air conditioner. A ventilation guide that flows along the vicinity of the ceiling and leads to the lighting device, and circulates air through the lighting device so that the temperature around the lighting device detected by the temperature detecting means is constant brightness. A composite device characterized in that it is kept within the range to be secured. 3. The composite apparatus according to claim 1, wherein the temperature of air circulating in the room around the lighting device is suppressed to a range of 20 ° C. to 30 ° C. 3. Covers a lighting device that is provided outdoors and illuminates, and also has a cover provided with holes in the lower and upper parts so that heat does not accumulate inside by circulating air through the lighting device, and the surroundings of the lighting device provided in the cover Temperature detecting means for detecting the temperature of the lighting device, and control means for changing the voltage applied to the lighting device by an inverter to change the brightness of the lighting, and the inverter according to the temperature detected by the temperature detecting means And controlling the lighting device to keep the lighting device at a constant brightness. 5. The composite device according to claim 4, wherein the voltage of the inverter is lowered in accordance with a temperature drop around the lighting device for a specific time period. A heat generating device that generates low temperature cold or high temperature heat, an air conditioner that cools or heats the room in which the heat generating device is disposed, an illumination device that is disposed above the room and performs illumination, and Electrical circuit connecting means capable of connecting at least two types of devices, ie, a heat generating device, an air conditioner, and a lighting device, to a plurality of types of power supplies, and power consumption of at least two types of the heat generating device, the air conditioner, and the lighting device And when the total power consumption reaches a predetermined value, the connection of the electrical circuit between at least one device and one type of power supply is switched to another type of power supply. A composite device characterized by connecting. A device that generates low temperature cold or high temperature heat, an air conditioner that cools or heats the room in which the heat generating device is disposed, an illumination device that is disposed above the room and performs illumination, and the heat generation An electric circuit connecting means capable of connecting at least two types of devices, an air conditioner and an illuminating device to a plurality of types of power supplies, and at least two types of the heat generating device, the air conditioner and the illuminating device are provided. A composite apparatus, wherein a connected power source is connected to another power source during a preset time period.

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