JP2013053845A - Air-conditioning system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To attain an air-conditioning system which can avoid flawing plants by uniformizing a temperature and humidity inside space in heating air conditioning of large indoor space for plant cultivation.SOLUTION: The air-conditioning system includes: a plurality of heat pump type air-conditioning devices; a burning heater; a circulating fan provided for each heat pump type air-conditioning device for stirring air inside target space; a temperature detecting means for detecting a temperature inside the target space; a controller for controlling them; and a communication means for sending and receiving signals between the heat pump type air-conditioning devices, the burning heater, the circulating fan, and the controller, in air-conditioning target space made airtight for cultivating plants. While the heat pump type air-conditioning devices are run to heat, when a detection temperature inside the target space is equal to or more than a given value A, the controller commands the corresponding circulating fan to permit to run, also the circulating fan repeats running and a stop for each given time, and when the detection temperature inside the target space is less than the given value A, the controller starts or runs the burning heater.

Description

  The present invention heats an indoor large air-conditioning target space such as a cultivation house that is cultivated with a plant by using a heat pump type air conditioner and a combustion type heating device such as an oil tank method among the air conditioning systems. It is related with the system for doing.

  Conventionally, a technique for interlocking control of a heating device and an electric fan in order to warm an air-conditioning target space has been proposed (see, for example, Patent Document 1). This technique is known as a technique for eliminating temperature unevenness in a room that has been heated and air-conditioned by interlocking control between a heating device and a fan and improving comfort.

  On the other hand, an interlocking control technique between a combustion-type heating device and a non-combustion-type heating device has been proposed (see, for example, Patent Document 2). Combustion part that heats the target space by combustion and non-combustion part that heats the target space by a method other than combustion are provided in the air-conditioning target space, and control of the non-combustion part based on information on the combustion part or information on the non-combustion part It is described that the combustion part is controlled based on the above. For example, at startup, first, the combustion system and non-combustion heating equipment are operated simultaneously to ensure quick warming. Next, when the room temperature approaches the target temperature, the combustion system heating equipment is stopped and the non-combustion system is stopped. By heating only with the other heating equipment, the unpleasant odor due to incomplete combustion of the combustion system is suppressed, and when the fuel of the fuel heating equipment is exhausted, the room heating is done by heating only with the non-fuel heating equipment In addition, if the indoor temperature detection sensor provided in the combustion-type heating device and the non-combustion-type heating device is more than the predetermined temperature difference, the ventilation fan can be operated to eliminate the temperature unevenness It is described.

JP 2000-146209 A (page 2-4, FIG. 1) JP 2004-257656 A (pages 7-12, FIGS. 1 and 2)

  However, in the prior art of Patent Document 1, there is an effect of improving the comfort by eliminating the temperature unevenness in the target space in the system that controls the heating device and the fan in an interlocked manner. May be damaged. For example, when the heating device is a heat pump type air conditioner, if the heating operation is performed while the outside air is low, frost forms on the outdoor heat exchanger and the heating capacity is eventually reduced, so that a defrosting operation is necessary. During the defrosting operation by the reverse cycle, low-temperature refrigerant flows through the indoor heat exchanger, so cold air drifts around the indoor heat exchanger and the indoor unit, and the indoor unit stops the fan and the target space The wind is not sent inside. When the ventilation fan is operated at that time, the cold air is blown into the target space, and the temperature of the target space is lowered to reduce the environmental effect.

  In addition, in the prior art of Patent Document 2, there is no description regarding priority use of a heater with a small amount of CO2 emission, and when the target temperature is approached, the combustion system is stopped and the non-combustion system is operated. However, it is not described that the non-combustion system is covered by the combustion system when the non-combustion system stops due to defrosting, etc., and even if the heater is not in operation, There is no description of operating a fan for circulating air. When plant cultivation is assumed in a large indoor space, it is necessary to solve these problems.

  This invention was made in order to solve the problems as described above, and assumes that plants are cultivated in a large indoor space, and a plurality of non-combustion heat pump air conditioners, combustion heating devices, and air It is equipped with a circulation fan to stir the heat, thoroughly prioritizes the use of heaters with low CO2 emissions and low fuel costs, predicts a reduction in the heating capacity of the preferentially used heater, and stops before capacity reduction For the purpose of avoiding damage to plants by operating the heater and avoiding insufficient heating capacity, devising the operation method of the circulation fan so that not only the indoor temperature but also the humidity is uniform. Yes.

  Also, when the combustion heating equipment and the non-combustion heating equipment are installed in the same air-conditioning space, the equipment with the higher running cost and CO2 emission is operated mainly, and the running cost and CO2 emission are lower. By operating a small number of devices in response to partial load by intermittent operation or capacity control operation, there are cases where the operation is not good for the environment, so these improvements are necessary.

  The air conditioning system according to the present invention includes a plurality of heat pump air conditioners, a combustion heating device, and a stirrer of air in the target space in a sealed air conditioning target space for cultivating plants. Circulation fan provided for each heat pump type air conditioner, temperature detection means for detecting the temperature in the target space, a control device for controlling them, the heat pump type air conditioner, the combustion type heating device, and the circulation A communication means for transmitting and receiving a signal between the fan and the control device is provided, and when the detected temperature in the target space is equal to or higher than a predetermined value A while the heat pump air conditioner is in a heating operation, The control device instructs the corresponding circulation fan to permit operation, and the circulation fan repeats operation and stop every predetermined time, and the detected temperature in the target space is less than the predetermined value A. Is to start or operate the combustion type heating device.

  The air conditioning system according to the present invention includes a plurality of heat pump air conditioning apparatuses, a combustion heating apparatus, and each heat pump for stirring air in the target space in a sealed air conditioning target space for growing plants. A circulation fan provided for each type of air conditioner, a control device for controlling them, the heat pump air conditioner, the combustion heating device, and a signal for transmitting and receiving signals between the circulation fan and the control device Since the communication means is provided, the operation method of the circulation fan can be devised so that not only the indoor temperature but also the humidity can be made uniform so that plants grown in a large indoor space can be prevented from being damaged, and further, CO 2. Preferentially use heaters with low emissions and equipment operating fees, predict heating capacity reduction of preferentially used heaters, and operate stop heaters before capacity reduction to reduce heating capacity It has the effect of avoiding falling into.

It is a top surface lineblock diagram of the air harmony system concerning Embodiment 1 of the present invention. It is a side lineblock diagram of an air harmony system concerning Embodiment 1 of the present invention. It is a figure of the heat pump type air harmony device concerning Embodiment 1 of the present invention. It is a figure of the combustion type heating apparatus which concerns on Embodiment 1 of this invention. It is an operation | movement chart figure of the air conditioning system which concerns on Embodiment 1 of this invention.

Embodiment 1 FIG.
Embodiment 1 of the present invention will be described below. FIG. 1 is a top view configuration diagram when an air conditioning system is installed in a large indoor space which is a cultivation house where plants are grown, and FIG. 2 is a side view configuration diagram thereof. 1 is a separation type heat pump air conditioner in which an indoor unit and an outdoor unit are connected by refrigerant piping, 2 is a combustion heating device, 3 is a circulation fan that stirs the air in the air-conditioning target space, and 4 is the air-conditioning target space A temperature detecting means 5 for measuring the temperature of the heat pump type air conditioner 1, the combustion type heating apparatus 2, and the circulation fan 3, and a controller for detecting the temperature by the temperature detecting means 4; 6 Is a communication means for connecting each of the devices 1 to 3 and the control device 5, and 7 is an air-conditioning target space inside the cultivation house where the plant is grown. The air conditioning system shown here is a system for operating 1 to 3 to heat and heat the air-conditioning target space 7. It goes without saying that the communication means 6 may be either wired or wireless.

  As shown in FIG. 1 and FIG. 2, two heat pump type air conditioners 1 and one combustion type heating device 2 are respectively installed on the left and right sides of the cultivation house. However, these numbers are changed by the air conditioning load in the air conditioning target space inside the cultivation house. In the figure, each device is installed on both the left and right sides, facing each other, and warm air and air are supplied to the cultivated plants arranged in the central part between them. Reference numeral 8 denotes this plant grown in the air-conditioning target space, and reference numeral 9 denotes a high-humidity region in which leaves grow thickly upward and humidity generated from the plant is difficult to diffuse to another region.

  Moreover, the temperature detection means 4 is selected and provided in the substantially central part as a position which can detect the average temperature of the air-conditioning object space in a cultivation house. However, when a plurality of temperature detecting means 4 are provided, it is also possible to divide the area and provide one for each area. The control device 5 of FIG. 1 is attached to the wall surface in the cultivation house and can be operated by the user while actually feeling the air-conditioning state of the air-conditioning target space. It is connected so as to be communicable with the equipment device and the temperature detecting means, and is used to monitor the operation state and transmit / receive control the operation command.

  The heat pump type air conditioner 1 is mainly composed of five elements (FIG. 3). An outdoor unit 1a including a compressor, a heat exchanger, an expansion valve, a liquid reservoir, and a fan that compresses a refrigerant by a compression mechanism connected to a motor that rotates by electricity, an indoor unit 1b including a heat exchanger and a fan, and the outdoor unit A gas / liquid extension pipe 1d for connecting the machine 1a and the indoor unit 1b, a remote controller 1c for commanding operation / stop, commanding the target temperature of the target space, and commanding to change the rotation speed of the indoor fan; The communication unit 1e connects the indoor unit and the remote controller 1c. It goes without saying that the remote controller 1c may be the same as the control means 4. It goes without saying that the communication means 1e may be either wired or wireless.

  The combustion heating device 2 is a heater that uses fossil fuel or gas such as petroleum (heavy oil) or coal as fuel. The air in the cultivation house is taken into the combustion type heating device 2 by the blower 2a, and the amount of heat for heating the air-conditioning target space 7 is discharged into the space as blown hot air with the air heated by the combustion using the blower 2a. . On the other hand, the combustion gas generated at the time of combustion is discharged outside the air-conditioning target space using the discharge means 2b. The blown hot air flows through the duct 2c connected to the blower 2a, and is discharged from the lower side of the target space through the duct hole into the cultivation house. As shown in FIG. 4, this combustion heating device 2 guides and burns heavy oil stored in an external tank to the main body via a pipe, transfers this combustion heat to the air in the cultivation house through a heat exchanger, The heated air is circulated by releasing it into the air-conditioning target space to air-condition the cultivation house space.

  The circulation fan 3 is provided for each indoor unit 1b of the heat pump type air conditioner 1, and blows out the heated air by sucking the air in the cultivation house into the machine and passing through the heat exchanger. It is installed so as to assist the air flow along the air blowing direction in the front. This circulation fan 3 is suspended from the ceiling surface above the air-conditioning target space, and is attached at a predetermined interval from the indoor unit 1b.

  An example of the control procedure during the heating operation will be shown below, and the operation chart of FIG. In FIG. 5, time is taken on the horizontal axis, and three levels indicating the heating / defrosting / stopping mode of the heat pump type air conditioner 1 and 2 showing the operation / stopping of the combustion type heating device 2 in the vertical direction. The level of the stage, the level of two stages indicating the operation / stop of the circulation fan 3, and the temperature A [° C.] of the air-conditioning target space are taken. In the present embodiment, it is assumed that the heat pump type air conditioner 1 has a lower CO2 emission amount and a lower running cost than the combustion type heating device 2 before operation. The ambient temperature (outside air temperature) of the outdoor unit 1a of the heat pump type air conditioner 1 is 0 WB ° C., and a defrosting operation is required during the heating operation. In addition, it is assumed that the target temperature in the target space is set in advance in the control device 5 or the remote controller 1c of the heat pump air conditioner, and the control device 5 recognizes the target temperature before operation.

<Procedure 1>
The user activates the heat pump air conditioner by pressing the activation command switch or button of the control device 5 or the remote controller 1c of the heat pump air conditioner 1. The activation may be performed automatically by scheduling the activation time in advance in the control device 5 or the remote controller 1c. Assume that the air conditioning system receives an operation command with this work. Since the control device 5 receives all the information from the heat pump type air conditioner 1, the combustion type heating device 2, the circulation fan 3 and the temperature detecting means 4 which are connected in communication, the control device 5 controls this air condition system. When the start command from 1c is received, the entire system can be controlled to start operation.

<Procedure 2>
The control means 5 recognizes that the heat pump type air conditioner 1 has been activated via the communication means 6.

<Procedure 3>
The control device 5 transmits an operation command to the circulation fan 3 via the communication means 6 to operate the circulation fan 3.

<Procedure 4>
When a predetermined time Z has elapsed from the start of the operation, the control device 5 recognizes the temperature in the target space using the temperature detection means 4 in the air-conditioning target space. If the temperature in the target space is lower than the predetermined temperature A ° C, proceed to step 5, and if it is equal to or higher than the predetermined temperature A ° C, proceed to step 6. Thereafter, this procedure is performed every predetermined time Z minutes while the air conditioning system receives the operation command. Here, the predetermined temperature A ° C varies depending on the plant to be cultivated, but is generally in the range of 10-30 ° C.

<Procedure 5>
In addition to the operation of the heat pump type air conditioner 1, the combustion type heating device 2 is started. The combustion heating apparatus is stopped when the temperature in the target space measured every predetermined time Z minutes becomes A ° C or higher. Here, for example, the predetermined time Z is set to 5 to 10 min.

<Procedure 6>
When a predetermined time Y has elapsed since the circulation fan 3 was started, the circulation fan is stopped. The circulation fan is started again after X minutes have elapsed. This procedure is carried out continuously while the air conditioning system receives an operation command. The relationship between the operation time Y minutes and the stop time X minutes of the circulation fan 3 is based on a control operation in which the operation Y time is lengthened and the stop X time is shortened. Change and respond. Although the temperature stabilizes quickly, it takes time for the humidity to stabilize, so that the circulation fan 3 is operated longer. Further, the X time and the Y time are set so that at least one cycle of operation / stop of the circulation fan 3 is operated during one operation of the heat pump type air conditioner 1.

<Procedure 7>
Control device 5 via communication means 6 that heat pump type air conditioner 1 switches from heating operation to defrosting operation or switches from heating operation to defrosting operation after a predetermined time W after predicting the time to enter defrosting. Recognizes.

<Procedure 8>
When it is recognized in step 7 that the defrosting operation is performed or the defrosting operation is switched to after a predetermined time W, the control device 5 confirms the operation state of the circulation fan, stops the operation if the operation is performed, and the combustion heating device. Check the operation status of the machine and drive it if it is stopped.

<Procedure 9>
The control device 5 recognizes that the defrosting operation of the heat pump type air conditioner 1 is performed and the defrosting operation of the outdoor unit-side heat exchanger is completed and the defrosting operation is switched to the heating operation via the communication unit 6.

<Procedure 10>
When it is recognized in step 9 that the control means 5 is switched from the defrosting operation to the heating operation, the control means 5 confirms the operation state of the circulation fan 3, switches from the stop to the operation, and operates the combustion heating device 2 Stop. Thereafter, the procedure proceeds to procedure 4.

  There are three reasons why the circulation fan 3 is not operated continuously in steps 3 and 6 but is operated for Y minutes and stopped for X minutes. One reason is that a wind always hits a specific plant and hurts the plant during continuous operation. If the circulation fan 3 is swung up and down and left and right, the damage to the plant is further improved. The second reason is that when the heating / heating capacity is low, such as immediately before the heat pump type air conditioner 1 enters the defrosting operation or when the heat pump type air conditioning apparatus 1 is switched from the defrosting operation to the heating operation, warm air that is not very warm is blown and circulated in the room. Because it will do. In other words, if the circulating fan 3 is continuously blown, the temperature in the air-conditioning target space is greatly affected by the change in the temperature of the hot air blown out by the heat pump air conditioner 1. Therefore, if the intermittent operation is performed, a change in the temperature of the hot air blown out by the heat pump air conditioner can be slightly relaxed and reflected in the air-conditioning target space. The third reason is that it is experimentally known that the temperature unevenness in the target space can be eliminated even when the circulation fan 3 is intermittently operated.

  Here, although it is the operation time and stop time of the intermittent operation time of the circulation fan 3, at least once or more during the heating operation time from the defrost operation of the heat pump type air conditioner 1 to the next defrost operation. Ideally, there should be a run / stop cycle. It has also been found that in a few minutes of operation and stop cycles, the time is too short to eliminate temperature variations in the target space. Due to the growth of the plant, that is, there are few leaves and short in the early stages, but the leaves grow thick in the late stage. Therefore, changing the operation and stop time is also effective in improving the temperature unevenness.

  The reason why the circulation fan 3 is stopped when the heat pump type air conditioner 1 enters the defrosting operation in step 8 is to prevent the cool air drifting around the indoor unit 1b and the indoor heat exchanger from being blown into the target space.

  It is well known that in Step 10, the heat pump air-conditioning apparatus 1 cannot secure hot air of a predetermined temperature or more immediately after switching from the defrosting operation to the heating operation, or even for several minutes after the switching. Therefore, second temperature detection means is newly provided at the outlet of the indoor unit. When the temperature detection means detects a temperature equal to or higher than a predetermined temperature, temperature information is transmitted to the control device 5 via the communication means 6, and then a circulation fan is provided. Driving 3 is effective in keeping the temperature of the target space constant and constant.

  Assuming that the heat pump type air conditioner 1 is in operation, the combustion type heating device 2 still has a target space temperature of A ° C. or lower, that is, when the heating capacity is insufficient, or the heat pump type air conditioner 1 is defrosted. It runs only when there is no heating capacity. For this reason, it is possible to realize an environment-friendly air conditioning system by thoroughly prioritizing the operation of the heat pump type air conditioning apparatus 1 with a low running cost or low CO2 emission.

Embodiment 2. FIG.
The second embodiment of the present invention will be described below. Since the air conditioning system in a large indoor space such as a cultivation house where plants are cultivated is the same as that of the first embodiment, it will be described with reference to FIGS.

  Here, the operation when the temperature in the air-conditioning target space is higher than the target set temperature specified by the user will be described. An example of the control procedure during the heating operation is shown below.

<Procedure 11>
The user activates the heat pump air conditioner by pressing the activation command switch or button of the control device 5 or the remote controller 1c of the heat pump air conditioner 1. The activation may be performed automatically by scheduling the activation time in advance in the control device 5 or the remote controller 1c. Assume that the air conditioning system receives an operation command with this work.

<Procedure 12>
Since the temperature in the air-conditioning target space is higher than the target set temperature specified by the user, the heat pump type air conditioner 1 and the combustion type heating device 2 are not operated.

<Procedure 13>
The control means 5 sends the R fan operation and the S minute stop command to the circulation fan 3 via the communication means 6 to operate the circulation fan 3. Thereafter, the procedure 13 is repeated while the system operation command is issued and the temperature in the air-conditioning target space is higher than the target set temperature specified by the user.

  The reason why the circulation fan 3 is operated even when the heat pump type air conditioner 1 and the combustion type heating device 2 are stopped is to forcibly diffuse water vapor and moisture locally accumulated around the plant, and to eliminate the uneven humidity. It is. Since plants grow thicker at the later stage of growth, water vapor emitted from plants becomes difficult to diffuse widely. It is forcibly diffused by the operation of the circulation fan 3.

  Also, the reason why the continuous operation is not performed is that if the continuous operation is performed, a specific plant will be hit by the wind and the plant will be damaged. If the circulation fan 3 is swung up and down and left and right, the damage to the plant is further improved.

Embodiment 3 FIG.
The third embodiment of the present invention will be described below. Since the structure of the air conditioning system in the large indoor space where plants are cultivated is the same as that of Embodiment 1, it will be described with reference to FIGS.

  In the control device 5 of FIG. 1, the amount of CO2 discharged for 1 kW of electricity in the area where this air conditioning system is installed, and the amount of CO2 discharged for 1 kg of heavy oil and gas when the fuel of the combustion heating system is heavy oil, gas In this case, an input means for inputting the CO2 emission amount for 1 kg of gas is provided. It may be input by a device other than the control device 5 and recognized by the control device 5 via its communication means 6. It is assumed that the user inputs these before driving. Here, it is assumed that the fuel of the combustion heating apparatus 2 is heavy oil. Here, in the case of the heat pump type air conditioner 1, the compressor is driven by electricity and the refrigerant is circulated as a refrigeration cycle to obtain heating, but a method for generating electricity depending on the local location, for example, nuclear power generation Since utilization, thermal power generation utilization, power transmission efficiency, etc. are different, the CO2 emission amount per 1 kW of electric power taking these into account is input as basic data. In the case of the combustion type heating device 2, the CO2 emission amount per 1 kW of heavy oil considering the combustion efficiency of the device is input as basic data.

  Next, the control device 5 calculates the CO2 emission amount of the heat pump type air conditioner 1 and the CO2 emission amount of the combustion type heating device 2 necessary for obtaining a heating capacity of 1 kW. In particular, the heat pump type air conditioner 1 has different heating capacity depending on the outside air temperature, so that the CO2 emission amount changes accordingly, and the combustion type heating device does not forget to calculate the CO2 emission amount of electricity applied to the blower and the control device. To do.

  An example of the control procedure during the heating operation is shown below. In this example, the ambient temperature (outside air temperature) of the outdoor unit 1a of the heat pump air conditioner 1 is 0 WB ° C., and a defrosting operation is required during the heating operation.

<Procedure 21>
The user inputs in advance to the control device 5 the amount of CO2 discharged for 1 kW of electricity at the place where the air conditioning system is installed before operation and the amount of CO2 discharged for 1 kg of heavy oil when the fuel of the combustion heating system is heavy oil. To do.

<Procedure 22>
Next, the control device 5 calculates the CO2 emission amount of the heat pump type air conditioner and the CO2 emission amount of the combustion type heating device 2 necessary for obtaining a heating capacity of 1 kW.

<Procedure 23>
The user presses the start command switch or button of the control device 5 or the remote controller 1c of the heat pump type air conditioning device 1 to issue an operation command to the air conditioning system.

<Procedure 24>
Next, the control device 5 recognizes that an operation command has been issued to the system, and detects the outside air temperature. The CO2 emission amount of the heat pump air conditioner 1 per 1 kW heating at the outside air temperature is compared with the CO2 emission amount of the combustion heating device 2, and the one with the smaller CO2 emission amount is selected and started. The activation may be performed automatically by scheduling the activation time in advance in the control device 5 or the remote controller 1c. Assume that the air conditioning system receives an operation command with this work.

<Procedure 25>
The control device 5 recognizes through the communication means 6 that either the heat pump type air conditioner 1 or the fuel type heating device 2 has been activated.

<Procedure 26>
When the control device 5 is activated by the heat pump type air conditioner 1 in the step 25, the communication device 6 sends an operation command to the circulation fan 3 installed in the hot air blowing direction of the indoor unit 1b of the heat pump type air conditioner 1. And the circulation fan 3 is operated.

<Procedure 27>
When a predetermined time Z has elapsed in step 26, the control device 5 recognizes the temperature in the target space using the temperature detection means 4 in the air-conditioning target space. If the temperature in the air-conditioning target space is lower than the predetermined temperature A ° C, the process proceeds to step 28. Thereafter, this procedure is performed every predetermined time Z minutes while the air conditioning system receives the operation command.

<Procedure 28>
The combustion heating device 2 which is a high CO2 emission device that is stopped is started. This high CO2 emission device is stopped when the temperature in the target space measured every predetermined time Z minutes becomes A ° C or higher.

<Procedure 29>
After a predetermined time Y has elapsed since the circulation fan 3 was started, the circulation fan 3 is stopped. The circulation fan 3 is started again after X minutes have elapsed. This procedure is carried out continuously while the air conditioning system receives an operation command.

<Procedure 30>
When the operating device is the heat pump type air conditioner 1, the defrosting operation is started during the operation. The control means 5 recognizes via the communication means 6 that switching from the heating operation to the defrosting operation or switching from the heating operation to the defrosting operation after a predetermined time W has elapsed after predicting the time to enter the defrost.

<Procedure 31>
When it is recognized in step 30 that the defrosting operation is performed or the defrosting operation is switched to after a predetermined time W, the control device 5 confirms the operation state of the circulation fan and stops the operation if it is operating. Moreover, when the apparatus which has stopped is the combustion type heating apparatus 2, the operation state of the combustion type heating apparatus 2 is confirmed, and if it is stopped, it is operated.

<Procedure 32>
When the operating device is the heat pump air conditioner 1, the control device 5 recognizes that the defrosting operation is switched to the heating operation via the communication unit 6.

<Procedure 33>
When the device operated in the procedure 32 is the heat pump type air conditioner 1, the control device 5 confirms the operation state of the circulation fan when recognizing switching to the heating operation, and switches from the stop to the operation. In addition, the operation of the combustion heater is stopped. Thereafter, the process proceeds to step 26.

  The control device 5 or the remote controller 1c of the heat pump type air conditioner 1 clearly indicates the CO2 emission amount, and why the heat pump type air conditioner or the combustion type heating device is preferentially operated for the user. To understand. For example, based on the case where only the combustion heating device is operated and the air conditioning is kept at a predetermined temperature, the heat pump air conditioner is operated in conjunction with the circulation fan as the main, and the combustion heating device is adjusted according to the increase or decrease of the air conditioning load. As a total system when combined, the effect of reducing CO2 emissions is displayed in numerical values and graphs.

  CO2 emissions for 1 kW of electricity in the area where the air conditioning system is installed and CO2 emissions for 1 kg of heavy oil are input to the control device 5 when the fuel of the combustion heating system is heavy oil, and then the control device 5 to calculate the CO2 emission amount of the heat pump air conditioner and the CO2 emission amount of the combustion heating device necessary for obtaining a heating capacity of 1 kW for each outside air temperature, and when there is a heating request, the CO2 emission amount is It is possible to reduce the CO2 emission amount by preferentially operating the smaller one.

  Further, a CO2 sensor is provided in the air-conditioning target space in the cultivation house, and the change state of the CO2 concentration in the target space during air-conditioning is monitored. When the CO2 concentration detected by the CO2 sensor becomes a predetermined value or less, it is possible to contribute to CO2 reduction by taking in outside air containing CO2 into the cultivation house through the total heat exchanger, by the CO2 absorption action by plant growth. It becomes an air conditioning system.

Embodiment 4 FIG.
Embodiment 4 of the present invention will be described below. Since the structure of the air conditioning system in a large indoor space such as a cultivation house where plants are cultivated is the same as that of the first embodiment, it will be described with reference to FIGS.

  The control device 5 of FIG. 1 includes an input means for inputting an electricity charge at an area where the air conditioning system is installed, a heavy oil charge when the fuel of the combustion heating apparatus is heavy oil, and a gas charge when the fuel is gas. It may be inputted by a device other than the control means 5 and may be recognized by the control means 5 via the communication means 6. It is assumed that the user inputs the charge per usage amount before driving. Here, it is assumed that the fuel of the combustion heating apparatus is heavy oil.

  Next, the controller 5 calculates the electricity charge of the heat pump type air conditioner 1, the electricity charge of the combustion heating device 2 and the heavy oil charge necessary for obtaining a heating capacity of 1 kW. In particular, the heat pump type air conditioner 1 calculates the electricity bill for each outside air temperature, and the combustion type heating device 2 calculates the electricity cost for the blower and the control device without forgetting.

  An example of the control procedure during the heating operation is shown below. In this example, the ambient temperature (outside air temperature) of the outdoor unit 1a of the heat pump air conditioner 1 is 0 WB ° C., and a defrosting operation is required during the heating operation.

<Procedure 41>
The user inputs the electric charge of the place where the air conditioning system is installed before operation, etc., the heavy oil charge when the fuel of the combustion heating apparatus is heavy oil, and the gas charge when the fuel is gas, to the control device 5.

<Procedure 42>
Next, the control means 5 calculates the electricity charge of the heat pump type air conditioner 1 and the electricity charge + fuel oil charge of the combustion heating device 2 necessary for obtaining a heating capacity of 1 kW.

<Procedure 43>
The user issues an operation command to the air conditioning system by pressing the start command switch or button of the control means 5 or the remote controller 1c of the heat pump type air conditioning device 1.

<Procedure 44>
Next, the control device 5 recognizes that an operation command has been issued to the system, and detects the outside air temperature. The electric cost of the heat pump air conditioner 1 per 1 kW heating at the outside air temperature is compared with the electric charge + fuel charge of the combustion heating device 2, and the one with the lower cost is started. The activation may be performed automatically by scheduling the activation time in advance in the control means 5 or the remote controller 1c. Assume that the air conditioning system receives an operation command with this work.

<Procedure 45>
The control device 5 recognizes through the communication means 6 that the heat pump type air conditioner 1 or the fuel type heating device 2 has started.

<Procedure 46>
When the heat pump type air conditioner 1 is started in the procedure 45, the control device 5 sends an operation command to the circulation fan 3 installed in the hot air blowing direction of the indoor unit 1b of the heat pump type air conditioner 1 as a communication means 6. And the circulation fan 3 is operated.

<Procedure 47>
When the predetermined time Z has elapsed in step 46, the control device 5 recognizes the temperature in the target space using the temperature detection means 4 provided in the air-conditioning target space. If the temperature in the target space is lower than the predetermined temperature A ° C, the process proceeds to step 48. If the temperature in the target space is equal to or higher than the predetermined temperature A ° C, the process proceeds to step 49. Thereafter, this procedure is performed every predetermined time Z minutes while the air conditioning system receives the operation command.

<Procedure 48>
Start a high running cost device that is stopped. The high running cost device is stopped when the temperature in the target space measured every predetermined time Z minutes becomes A ° C or higher.

<Procedure 49>
After a predetermined time Y has elapsed since the circulation fan 3 was started, the circulation fan 3 is stopped. The circulation fan 3 is started again after X minutes have elapsed. This procedure is carried out continuously while the air conditioning system receives an operation command.

<Procedure 50>
When the operating device is the heat pump type air conditioner 1, the defrosting operation is started during the operation. The control device 5 recognizes via the communication means 6 that the heating operation is switched to the defrosting operation or that the heating operation is switched to the defrosting operation after a predetermined time W.

<Procedure 51>
When it is recognized in step 50 that the defrosting operation or switching to the defrosting operation after a predetermined time W is made, the control device 5 confirms the operation state of the circulation fan and stops it if it is in operation. Moreover, when the apparatus which has stopped is the combustion type heating apparatus 2, the operation state of the combustion type heating apparatus is confirmed, and if it is stopped, it is operated.

<Procedure 52>
When the operating device is the heat pump air conditioner 1, the control device 5 recognizes that the defrosting operation is switched to the heating operation via the communication unit 6.

<Procedure 53>
When the device operated in the procedure 51 is the heat pump type air conditioner 1, the control device 5 confirms the operation state of the circulation fan when switching to the heating operation and switches from the stop to the operation. In addition, the operation of the combustion heater is stopped. Thereafter, the process proceeds to step 46.

  The control device 5 or the remote controller 1c of the heat pump type air conditioner 1 has a display unit, which clearly indicates the charge for heating operation, which of the heat pump type air conditioner and the combustion type heating device is indicated to the user. So that you can understand why.

  First, the electric cost of the area where the air conditioning system is installed, the heavy oil fee when the fuel of the combustion heating device 2 is heavy oil, and the gas fee when gas is input to the control device 5, and then the control device 5 Calculate the electricity cost of the heat pump type air conditioner, the electricity cost of the combustion type heating device and the heavy oil cost for each outside air temperature required to obtain a heating capacity of 1 kW, and the running cost is low when there is a heating requirement By driving the direction preferentially, the cost can be reduced.

  DESCRIPTION OF SYMBOLS 1 Heat pump type air conditioner, 1a Outdoor unit, 1b Indoor unit, 1c Remote controller, 1d Liquid / gas refrigerant extension piping, 1e Communication means, 2 Combustion heating device, 2a Combustion heating device body, 2b Gas exhaust pipe, 2c Hot air duct, 3 circulation fan, 4 temperature detection means, 5 control device, 6 communication means, 7 air-conditioning target space, 8 cultivated plant, 9 area where humidity is difficult to diffuse.

Claims (8)

A plurality of heat pump air conditioners, a combustion heating device, and a heat pump air conditioner for agitating the air in the target space are provided to a sealed air conditioner target space for cultivating plants. A circulating fan, temperature detecting means for detecting the temperature in the target space, a control device for controlling them, a signal between the heat pump air conditioner, the combustion heating device, the circulating fan and the control device When the detected temperature in the target space is equal to or higher than the predetermined value A while the heat pump type air conditioner is in the heating operation, the control device is connected to the corresponding circulation fan. Instructing operation permission, the circulation fan repeats operation and stop every predetermined time, and when the detected temperature in the target space is less than a predetermined value A, the combustion heating device is activated. Air conditioning system, characterized in that to operation. 2. The air conditioning system according to claim 1, wherein the circulation fan repeats the operation of the Y time and the stop of the X time shorter than the Y time. The air conditioning system according to claim 1 or 2, wherein the circulation fan has at least one cycle of operation and stop during the heating operation time of the heat pump type air conditioner. A plurality of heat pump air conditioners, a combustion heating device, and a heat pump air conditioner for agitating the air in the target space are provided to a sealed air conditioner target space for cultivating plants. A circulation fan, a control device for controlling them, the heat pump air conditioner, the combustion heating device, and a communication means for transmitting and receiving signals between the circulation fan and the control device, the heat pump type While the air conditioner is performing a defrosting operation, the control device instructs the corresponding circulation fan to prohibit the operation, and a second temperature detection means is provided at the outlet of the heat pump air conditioner, and the heat pump After the air conditioner is switched from the defrosting operation to the heating operation, if the blowing temperature by the second temperature detecting means detects a predetermined value or more, the control device Air conditioning system, characterized by commanding the operation of the circulation fan. A plurality of heat pump air conditioners, a combustion heating device, and a heat pump air conditioner for agitating the air in the target space are provided to a sealed air conditioner target space for cultivating plants. A circulating fan, temperature detecting means for detecting the temperature in the target space, outside air temperature detecting means for detecting outside air temperature, a control device for controlling them, the heat pump air conditioner, the combustion heating apparatus, A communication means for transmitting and receiving signals between the circulation fan and the control device is provided, and the control device has a CO2 emission amount per 1 kW of electricity and a CO2 emission amount per kg of fuel used in the combustion heating device. An input means for inputting is provided, and the control device has a CO2 emission amount of the heat pump type air conditioner required to obtain a heating capacity of 1 kW at the detected outside temperature. Calculated CO2 emissions of serial combustion type heating devices, air conditioning system, characterized in that to command preferentially operation permission device having the smaller CO2 emissions. A plurality of heat pump air conditioners, a combustion heating device, and a heat pump air conditioner for agitating the air in the target space are provided to a sealed air conditioner target space for cultivating plants. A circulating fan, temperature detecting means for detecting the temperature in the target space, outside air temperature detecting means for detecting the outside air temperature, a control device for controlling them, the heat pump air conditioner, the combustion heating apparatus, A communication means for transmitting and receiving signals between the circulation fan and the control device; and an input means for inputting an electricity charge and a fuel charge of fuel used in the combustion heating device to the control device, and the heat pump type Compare the charge per 1 kW heating at the outside air temperature detected by the air conditioner and the charge per 1 kW heating of the combustion heating device. Air conditioning system, characterized by commanding the operation permission. When the control device preferentially commanded to permit operation is the heat pump type air conditioner, if the detected temperature in the target space is less than a predetermined value A, the stopped combustion type heating device is started. The air conditioning system according to claim 5 or 6. The electric charge or CO2 emission amount concerning the heat pump type air conditioner and the combustion type heating device is displayed on a display unit provided or connected to the control device. Air conditioning system as described in.

Images