JP2000257941A - Operation controller for air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To shorten operating time of an air conditioner, reduce energy consumption of cold water or hot-water in the air conditioner and improve energy saving effects by a method, wherein an intermittent operation control system, reading the opening degree of a valve from a valve opening degree table to open the valve, when the objective room temperature has exceeded a predetermined set value is provided. SOLUTION: The object room of air conditioning 1 is provided with an air conditioner 2 for cooling the room to a desired temperature, and a thermometer 3 for measuring the room temperature in the object room 1. The room temperature measured by the thermometer 3 is outputted into an intermittent operation commanding means 4. The intermittent operation commanding means 4 decides whether or not air conditioner operating mode is an air conditioner stopping mode and outputs an 'ON' control command or an 'OFF' control command. In this case, when the intermittent operation commanding means 4 has decided that the operation mode is an air-conditioning operation mode, for example, the means 4 reads the open extent of the valve, fetches a valve opening degree table 5, and outputs an ON output command into a controller 6, however, the OFF control command is outputted into the controller 6, when the operation mode is decided that the same is the air-conditioner stopping mode.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner operation control device for intermittently controlling the operation of air conditioners in various buildings such as a multipurpose intelligent building, an office building, and a residential building.

[0002]

2. Description of the Related Art It is no exaggeration to say that the most effective way to save energy in building air conditioning is to shorten the operation time. On the other hand, the air conditioner is designed in advance in consideration of the maximum load, and the building has a heat storage capacity. Therefore, at the time of partial load, there is a margin in the heat transfer capacity of the air conditioner, and if the air conditioner is stopped for a short time, appropriate air conditioning environment conditions can be maintained.

[0003] Conventionally, intermittent operation control for forcibly stopping the air conditioner intermittently has been performed within a time period in which the building is in use and the air conditioning environment conditions are not impaired.

In this intermittent operation control method, as shown in FIG. 9, an allowable temperature range of about ± 1 ° C. is set with respect to a predetermined room temperature target value so that the actual measured room temperature falls within the allowable temperature range. This is control to repeat the operation and stop of the air conditioner. This control method is a kind of ON / OFF control and can be controlled without adjusting the control parameters during operation. However, it has a remarkable energy saving effect as compared with normal continuous operation control that keeps the room temperature constant. Not only isn't obtained, but not much comfort.

[0005]

By the way, considering summer cooling in the case of using the conventional intermittent operation control,
For example, when the air conditioner is ON, the cold water flow valve is close to fully open and the room temperature falls, and when the room temperature falls below the lower limit set temperature, the air conditioner is turned off and the cold water flow valve is fully closed, The room temperature rises immediately. On the other hand, when the room temperature exceeds the upper limit set temperature, the air conditioner is turned on again, and the room temperature falls. Therefore, even in this intermittent operation control method, room temperature control within the upper and lower limit setting range is possible.

However, from the viewpoint of energy consumption, the energy consumption of the chilled water when the air conditioner is ON increases, and the power of the fan decreases, as compared with the normal continuous operation control in which the room temperature is kept constant as shown in FIG. Even considering the minutes, the total cold water consumption energy is almost the same or larger.

The present invention has been made in view of the above circumstances, and aims to shorten the operation time by intermittent operation control of an air conditioner, reduce the energy consumption of cold water or hot water during operation of the air conditioner as much as possible, and achieve an energy saving effect. An object of the present invention is to provide an air conditioner operation control device for improving the operation.

[0008] Another object of the present invention is to provide an air conditioner operation control device that improves the energy saving effect and ensures the comfort of the occupants.

[0009]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention relates to an air conditioner operation control device for performing intermittent operation control of an air conditioner according to a target room temperature. A valve opening table in which a valve opening for suppressing energy consumption of cold water or hot water is set, and a current external environmental condition is indexed when the target room temperature exceeds a predetermined temperature upper / lower limit set value. And an intermittent operation control system for taking out the valve opening from the valve opening table and controlling to open the operation valve for cold water or hot water.

According to the present invention, since the above measures are taken, the valve opening for suppressing the energy consumption of cold or hot water is set in advance in the valve opening table under external environmental conditions. During cooling in summer, when the target room temperature is equal to or higher than the predetermined temperature upper limit set value, the current external environmental condition is used as an index to take out the valve opening to minimize the energy consumption of cold water from the valve opening table and use it for cold water. An intermittent operation control is performed such that the operation valve is controlled to be opened, and when the target room temperature becomes equal to or lower than a predetermined lower limit temperature, the operation valve for chilled water is controlled to be closed.

As the external environment conditions, the outside air temperature or the outside air enthalpy obtained from the outside air temperature and the outside air humidity is used, but other external environment factors may be used.

Another aspect of the present invention is that the air conditioner is continuously operated under predetermined control parameters, and a valve operation command of a cold water or hot water operation valve to the air conditioner at that time is taken to open the average valve. Continuous operation average valve opening calculating means for calculating the degree,
During intermittent operation, a control parameter table in which intermittent operation control parameters are set such that the valve opening is smaller than the average valve opening calculated by the continuous operation average valve opening calculator, An air conditioner provided with an intermittent operation control system for opening and closing a cold water or hot water operation valve using an intermittent operation control parameter stored in the control parameter table when a predetermined temperature upper / lower limit set value is exceeded; An operation control device.

According to the present invention, by taking the above-described means, the continuous operation average valve opening calculating means performs continuous operation control of the air conditioner using predetermined control parameters in advance. The average valve opening is calculated by taking in the valve operation command of the cold water or hot water operation valve to the control valve for the intermittent operation such that the valve opening is smaller than the average valve opening in the control parameter table. Set.

In this state, the intermittent operation control system uses the intermittent operation control parameters stored in the control parameter table when the target room temperature becomes equal to or higher than the predetermined upper temperature set value during cooling in summer. Open control,
Further, when the target room temperature becomes equal to or lower than a predetermined temperature lower limit set value, the operation valve for cold water is closed.

Further, when the comfort index upper / lower limit value is used instead of the temperature upper / lower limit set value, in addition to the same configuration as described above, a measuring means for measuring various variables for obtaining the comfort index is provided. , A PMV that calculates a comfort index using variables measured by the measuring means and other necessary condition variables
When the comfort index obtained by the calculation means and the PMV calculation means exceeds a predetermined comfort index upper / lower limit set value, the valve opening degree is obtained from the valve opening degree table using the current external environmental condition as an index. An intermittent operation control system for taking out and controlling to open the cold water or hot water operation valve is provided.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. Here, a description will be given of an example of control during summer cooling using cold water.

FIG. 1 is a block diagram showing an embodiment of an air conditioner operation control device according to the present invention.

In FIG. 1, reference numeral 1 denotes a room to be air-conditioned in various buildings. The room 1 is provided with an air conditioner 2 for cooling the room to a desired temperature. A thermometer 3 is provided. This thermometer 3
Is sent to the intermittent operation command means 4.

The intermittent operation command means 4 receives the room temperature target reference value and the allowable temperature range, and determines the air conditioner operation mode based on the relationship between the measured room temperature of the target room 1 and the room temperature target reference value and the allowable temperature range. It determines whether the air conditioner is in the stop mode and outputs an ON control command or an OFF control command according to the determination mode. That is, when the intermittent operation command means 4 determines, for example, the air conditioner operation mode, the intermittent operation command means 4 takes in the valve opening set in the valve opening table 5 and sends it to the controller 6 together with the ON control command. When the determination is made, an OFF control command is sent to the controller 6.

The intermittent operation command means 4 sends an air conditioner fan control signal for operating the air conditioner fan when the ON control command is output, and stops the air conditioner fan when the OFF control command is output. Send a control signal.

In the valve opening table 5, from the viewpoint of energy saving, the relationship between the outside air temperature load and the valve opening which suppresses the energy consumption of the chilled water during the operation of the air conditioner is set in advance, and is set according to the current outside air temperature. It has a function to output the valve opening.

The controller 6 is, for example, a DDC (D
direct Digital Controller)
And the like, and has a function of selectively directly controlling the steam valve 7, the hot water valve 8, the cold water valve 9, and the like, which constitute the air conditioning process.

Next, the operation of the above-described control device will be described.

Now, the intermittent operation command means 4, for example, a room temperature target reference value of 24 ° C., an allowable temperature range + α (° C.), −β (° C.) (α
> 0, β> 0).

In this state, the intermittent operation command means 4
When the room temperature measured by the thermometer 3 during the use time of the target room 1 becomes equal to or higher than the temperature upper limit set value 24 + α (° C.), the air conditioner operation mode is determined, and the valve opening is determined based on the current outside air temperature. The valve opening is fetched from the table 5 and sent to the controller 6 together with the ON control command.

When the controller 6 receives the ON control command, it opens the chilled water valve 9 as an air conditioning process in accordance with the valve opening sent. However, when the air conditioner is started at the indoor use start time such as in the morning, the room temperature is several times higher than 24 + α (° C.), so the intermittent operation command means 4 or the controller 6 fully opens the chilled water valve 9 for a predetermined time. Is executed.

When the room temperature falls to the temperature lower limit set value 24-β (° C.) under the valve opening control in the air conditioner operation mode,
The intermittent operation command means 4 determines that the air conditioner is in the stop mode,
An FF control command is sent to the controller 6. When the controller 6 receives the OFF control command, the chilled water valve 9 is fully closed, so that the room temperature rises. This air conditioner stop mode is continued until the room temperature rises to 24 + α (° C.).

When the room temperature reaches 24 + α (° C.),
The intermittent operation command means 4 determines again the air conditioner operation mode, and repeats the same control as described above.

Although the above embodiment has been described with respect to the control during the cooling in summer, it goes without saying that the same control as described above is performed in the control of the heating in winter, for example.

Therefore, according to the above-described embodiment, an appropriate valve opening such that energy consumption of cold water or hot water during operation of the air conditioner is suppressed in advance in the valve opening table 5 according to the outside air temperature. When the room temperature exceeds the allowable temperature range, the operation valve such as cold water or hot water is opened according to the set valve opening, so the energy consumption of cold or hot water during operation of the air conditioner can be minimized and the energy saving effect Can be improved.

FIG. 2 is a block diagram showing another embodiment of the air conditioner operation control device according to the present invention. In the figure, the same components as those in FIG. 1 are denoted by the same reference numerals, and detailed description thereof will be omitted.

That is, the air conditioner operation control device includes an enthalpy calculating means 11 for newly calculating the outside air enthalpy from the outside air temperature and the outside air humidity, and the outside air enthalpy and the energy consumption of cold water or hot water during operation of the air conditioner are suppressed in advance. The relationship with the valve opening degree is tabulated,
A valve opening table 5A for outputting an appropriate valve opening capable of suppressing energy consumption of cold water or hot water based on the outside air enthalpy calculated by the arithmetic means 11 is provided. Same as 1.

Therefore, the air conditioner operation control device obtains the outside air enthalpy from not only the outside air temperature but also the outside air temperature and the outside air humidity, and then uses the outside air enthalpy as an index to read the consumption of cold or hot water from the valve opening table 5A. Since an appropriate valve opening for suppressing energy is taken out and the operation of opening the cold water valve 9 or the hot water valve 8 is executed based on this valve opening, the energy saving effect can be improved as in FIG.

FIG. 3 is a block diagram showing still another embodiment of the air conditioner operation control device according to the present invention. In the figure, the same components as those in FIGS. 1 and 2 are denoted by the same reference numerals,
The detailed description is omitted.

This air conditioner operation control device newly includes a continuous operation average valve opening calculating means 21 and a control parameter table 2
2 and intermittent operation control means 23 are provided, and the controller 6A is further improved.

The continuous operation average valve opening calculating means 21 comprises:
When a continuous operation instruction is received from the outside, a continuous operation command is sent to the controller 6A, and normal P control or PI control (P: proportional, I: integral) without intermittent operation of the controller 6A, that is, continuous operation Control, the valve operation command output from the controller 6A at this time is taken in, the average valve opening is calculated, and the control parameter table 2
Send to 2.

When calculating the average valve opening, the controller 6A
(Proportional gain and bias for P control, and proportional gain and integration time for PI control) use adjusted control parameters in the controller during continuous operation.

The calculation of the average valve opening degree by such a continuous operation may be performed during the adjustment period at the time of introduction of the apparatus and during the first one or two days during the summer cooling or the winter heating.

The control parameter table 22 shows that the average valve opening during the intermittent operation and the continuous operation is 1 / m (m
The control parameters (for example, proportional gain, bias, etc.) smaller than the adjustment parameters of the continuous operation are set so that the valve opening degree is equal to or less than 1.1 to 3.5).

The intermittent operation control means 23 determines whether the air conditioner is in the air conditioner operation mode or the air conditioner stop mode from the room temperature, the room temperature target reference value, the allowable temperature range, and the like. Has the function of sending

The controller 6A performs continuous control such as P control or PI control when receiving a continuous operation command from the continuous operation average valve opening calculating means 21. Otherwise, the controller 6A executes control information of the intermittent operation control means 23. The opening and closing of each of the operation valves 7 to 9 for the air conditioning process is controlled based on the above.

Next, the operation of the above device will be described.

First, at the time of installation of the apparatus or at an arbitrary time, a continuous operation instruction is input to the operation average valve opening calculating means 21 from outside. When receiving the continuous operation instruction, the operation average valve opening degree calculating means 21 sends the continuous operation instruction to the controller 6A for a required period.

The controller 6A stops the intermittent operation in response to the continuous operation command, and performs a valve operation command (operation signal) by a conventionally known continuous control such as P control or PI control based on the adjusted control parameters. Is calculated, and the operation valves 8 and 9 are controlled. At this time, the operating average valve opening calculating means 21 fetches the valve operation commands over a required period, calculates an average valve opening during continuous operation based on the valve operating commands, and calculates the calculated average valve opening. The opening is sent to the control parameter table 22.

As described above, this control parameter table 22 contains 1 / m of the average valve opening degree during continuous operation.
A control parameter smaller than the adjustment parameter for the continuous operation is set so that the valve opening degree is less than or equal to (m is about 1.1 to 3.5).

In this state, the intermittent operation control means 23
Executes the intermittent operation control under the following conditions.

Now, for example, the room temperature target reference value 24
° C, allowable temperature range + α (° C), -β (° C) (α> 0, β>
When 0) is set, the intermittent operation control unit 23 determines that the air conditioner operation mode is set when the room temperature of the thermometer 3 becomes 24 + α (° C.) or more during the usage time of the target room 1, and the control parameter table 22. P control parameter for intermittent operation (or PI
The control parameter) is taken out, and in addition to the control parameter, the ON control command and the opening upper limit already possessed by the intermittent operation control means 23 are sent to the controller 6A. In addition, the operating room temperature target value 24-β
(° C).

When the controller 6A receives the ON control command, the controller 6A obtains a valve operation command based on the control parameters so that the room temperature becomes a target value during operation, and opens the chilled water valve 9.

The opening of the chilled water valve 9 is limited so as not to exceed the upper limit of the opening. However, when the air conditioner is started at the time of starting indoor use such as in the morning, the room temperature is increased from room temperature 24 + α (° C.). Because of this, the restriction is invalid and the cold water valve 9
Is set to an opening near full open.

When the room temperature falls to 24-β (° C.) under the valve opening control in the air conditioner operation mode, the intermittent operation control means 23 determines that the air conditioner is in the stop mode and sends an OFF control command to the controller 6A. Send out. This controller 6A
Turns the chilled water valve 9 fully closed based on the OFF control command, so that the room temperature rises. In this air conditioner stop mode, the room temperature is 2
Continue until it rises to 4 + α (° C.).

When the room temperature becomes equal to or higher than 24 + α (° C.), the intermittent operation control means 23 determines again that the air conditioner is in the operation mode, and repeats the operation control of the operation valve as described above.

FIG. 4 is a diagram showing an example of energy consumption of chilled water when intermittent operation control is performed using the apparatus of the present invention. As is clear from the comparison between FIG. 4 and FIG. 10, the energy consumption is greatly reduced.

In the above embodiment, the control during the cooling in the summer has been described. However, it goes without saying that the control in the heating in the winter can be controlled in the same manner as described above.

Therefore, according to the above-described embodiment, the controller 6A operates the operation valve by continuous operation for a required period, and calculates the average valve opening from the valve operation command at this time. The control parameters are set so that the valve opening is smaller than the average valve opening calculated in step S22.

During the intermittent operation, the control parameters indexed by the average valve opening degree of the continuous operation from the control parameter table 22 are fetched and set in the controller 6A, and the intermittent operation control is performed. In addition, by performing the intermittent operation under appropriate control parameters, the energy consumption of cold or hot water can be significantly reduced.

FIG. 5 is a block diagram showing still another embodiment of the air conditioner operation control device according to the present invention. In the figure, the same components as those in FIG. 1 are denoted by the same reference numerals, and detailed description thereof will be omitted.

This embodiment is an example in which intermittent operation control is performed in consideration of human comfort. Comfort will be described below prior to description of the apparatus.

In order to secure an appropriate indoor thermal environment in consideration of human comfort, it is important to consider human thermal sensation with respect to heat and cold. The variables that affect such comfort include (a) air temperature, (b) relative humidity, (c) average radiant temperature, (d) airflow velocity, (e) activity state (the amount of heat generated inside the human body). , (F) The amount of heat generated by a person, including the state of clothing, is the sum of the amount of radiation by convection, the amount of heat released by radiation, the amount of heat evaporated from the person, the amount of heat released by breathing, and the amount of heat stored, and these heat balance equations are established. If you are, you are in a comfortable state where your body is thermally neutral and neither hot nor cold. Conversely, if the thermal equilibrium equation breaks down, the human body feels heat or cold.

Fanger published a method for deriving the comfort equation in 1967. Thereafter, using the comfort equation as a starting point, the PMV linking the thermal load of the human body to the thermal sensation of the human body was used.
(Predicted Mean Vote: predicted average answer) has been proposed.

This PMV has recently been adopted in the ISO standard and has been widely used. PMV, which is an index of thermal sensation, is expressed as a numerical value on the following seven-point scale.

+3: hot +2: warm +1: slightly warm 0: neither, comfortable -1: slightly cool -2: cool -3: cold Of the above figures, the human comfort range is -0.5 to +
The numerical range is 0.5.

Therefore, as an apparatus of the present invention, an average radiation thermometer 31 for measuring the average radiation temperature in the target room 1 and an airflow velocity meter 32 for measuring the airflow velocity in the room are newly added to the components of the apparatus shown in FIG. And hygrometer 3 for measuring indoor humidity
3 and the above meters 31 to 33 including the room temperature.
Based on the measured output, clothing state information and activity state information, and sends the PMV to the intermittent operation command means 4A.
A V calculation unit 34 is provided.

The PMV calculator 34 is as described in Japanese Patent Application Laid-Open No. 5-126380 proposed by the present inventors.

That is, as shown in FIG. 6, the PMV calculator 34 has a neural network NN as a main component and a neuro PMV calculator 41 for calculating a neuro PMV.
And a setting section 42 for setting the occupant's thermal sensation, and a change amount calculating section 43 for calculating the change amount ΔPMV of the neuro PMV.

The neural PMV calculator 41 is a neural network N for finding the neuro PMV by learning.
N and the PMV that determines the initial PMV using the PMV arithmetic expression
An arithmetic unit 41A, a back propagation learning unit 41B for calculating the weight between the layers of the neural network NN, and a changeover switch 41C that switches to the setting unit 42 during learning.
, Clothing state, activity state, each measurement meter 3, 31-3
The neuro PMV is calculated using the third variable.

In the intermittent operation command means 4A, a PMV target reference value and a PMV allowable width are set in place of the temperature.

The operation of the above device will be described.

Now, from the outside, for example, the PMV target reference value.
3. When PMV + 0.1 and -0.1 are set,
The intermittent operation instructing means 4A outputs the P
The PMV calculated by the MV calculator 34 is 0.4
When it becomes (0.3 + 0.1) or more, the air conditioner operation mode is determined, the valve opening indexed by the current outside air temperature is taken from the valve opening table 5, and sent to the controller 6 together with the ON control command.

When the controller 6 receives the ON control command, it opens the chilled water valve 9 according to the valve opening sent from the intermittent operation command means 4A. In addition, the valve opening degree of the valve opening degree table 5 is set to a value that suppresses the energy consumption of the chilled water during the operation of the air conditioner from the relationship with the outside air temperature load in advance. Also, when the air conditioner is started at the indoor use start time such as in the morning, since the PMV is higher than 0.4, during the required time, the chilled water valve 9 is set to an almost full opening.

When the PMV falls to 0.2 (0.3-0.1) under the valve opening control in the air conditioner operation mode, the intermittent operation command means 4A judges that the air conditioner is in the stop mode, and
An FF control command is sent to the controller 6. Since the controller 6 fully closes the chilled water valve 9 based on the OFF control command, the PMV rises. This air conditioner stop mode is continued until the PMV rises to 0.4. Here, when the PMV exceeds 0.4, the intermittent operation command means 4A
Is determined to be the air conditioner operation mode again. In this way, the intermittent operation of the air conditioner is started and stopped repeatedly.

Although the above embodiment has been described with respect to the control during the cooling in the summer, it goes without saying that the control in the heating in the winter can be controlled in the same manner as described above.

Therefore, according to the above-described embodiment, after PMM is obtained by taking in the elements relating to human comfort from the target room 1 and the like, this PMV is determined from the PMV target reference value and the PMV allowable width. When the upper and lower limits of the PMV exceed the set value, operation and stop are repeated using the valve opening specified for energy saving, so that not only the operation time of the air conditioner is shortened, but also the energy consumption of cold or hot water is reduced as much as possible. Yes, and also provide satisfactory occupant comfort.

FIG. 7 is a block diagram showing still another embodiment of the air conditioner operation control device according to the present invention. In the same figure, the same components as those in FIGS. 2 and 5 are denoted by the same reference numerals,
The detailed description is omitted.

This embodiment is different from the embodiment shown in FIG. 5 in that the enthalpy calculation means 1 for newly obtaining the outside air enthalpy from the outside air temperature and the outside air humidity in addition to the outside air temperature.
1 and a valve opening degree table 5A capable of taking out a valve opening degree from the outside air enthalpy obtained from the enthalpy calculating means 11 so as to suppress chilled water consumption energy during operation of the air conditioner.

FIGS. 2 and 5 show other structures and operations.
Therefore, the same configuration and operation will be described with reference to FIGS.

FIG. 8 is a block diagram showing still another embodiment of the air conditioner operation control device according to the present invention. In the same figure, the same components as those in FIGS. 3 and 5 are denoted by the same reference numerals,
Detailed description is omitted.

In this embodiment, the components shown in FIG.
And the room temperature set value calculation unit 5
1 is provided.

The room temperature set value calculating section 51 is provided, for example, in FIG.
The neuro PMV and the PMV target reference value or the neuro PMV, ΔPMV which are the outputs of the PMV calculation unit 34 shown in FIG.
And the PMV target reference value are input, and a room temperature set value is obtained by fuzzy inference, or a room temperature set value is obtained by multiplying a required conversion coefficient from the PMV target reference value.

Next, the operation of the above device will be described.

At the time of installation of the apparatus or at an arbitrary time, a continuous operation instruction is input to the operation average valve opening calculating means 21 from outside.
When receiving the continuous operation instruction, the operation average valve opening degree calculating means 21 sends the continuous operation instruction to the controller 6A for a required period.

The controller 6A stops the intermittent operation in response to the continuous operation command, and performs a valve operation command (operation signal) by, for example, conventionally known continuous control such as P control or PI control based on the adjusted control parameters. Is calculated, and the operation valves 8 and 9 are controlled. At this time, the operating average valve opening calculating means 21 fetches the valve operation commands over a required period, calculates an average valve opening during continuous operation based on the valve operating commands, and calculates the calculated average valve opening. The opening is sent to the control parameter table 22.

The control parameter table 22 shows that the average valve opening during continuous operation is 1 / m (m is 1.1 to
A control parameter smaller than the adjustment parameter of the continuous operation is set so that the valve opening degree becomes about 3.5 or less.

In this state, the intermittent operation control means 23A
Executes the intermittent operation control under the following conditions.

Externally, for example, a PMV target reference value of 0.3,
When PMV + 0.1 and −0.1 are set, the intermittent operation control unit 23A sets the PM
The PMV calculated by the V calculation unit 34 is 0.4 (0.
3 + 0.1) or more, it is determined that the air conditioner is in the operation mode, and the control parameter of the intermittent operation set based on the average valve opening is fetched from the control parameter table 22; The command and the opening upper limit value already possessed by the intermittent operation control means 23A are sent to the controller 6A. Also, for the controller 6A,
Set the room temperature target during operation.

When the controller 6A receives the ON control command, the controller 6A obtains a valve operation command based on the control parameter so that the room temperature becomes the target room temperature during operation, and opens the chilled water valve 9.

The opening of the chilled water valve 9 is limited so as not to exceed the upper limit of the opening. However, when the air conditioner is started at the time of starting the use of the room temperature in the morning or the like, the PMV is less than 0.4. Since it is high, this restriction is invalid and causes the chilled water valve 9 to be near full open.

When the PMV drops to 0.2 (0.3-0.1) under the valve opening control in the air conditioner operation mode, the intermittent operation control means 23A determines that the air conditioner is in the stop mode,
An OFF control command is sent to the controller 6A. Since the controller 6A fully closes the chilled water valve 9 based on the OFF control command, the PMV rises. This air conditioner stop mode is continued until the PMV rises to 0.4.
Here, when the PMV exceeds 0.4, the intermittent operation control unit 23A determines again that the air conditioner is in the air conditioner operation mode. In this way, the intermittent operation of the air conditioner is started and stopped repeatedly.

Although the above embodiment has been described with respect to control during cooling in summer, it goes without saying that control in heating in winter can be controlled in the same manner as described above.

Therefore, also in this embodiment, after PMM is obtained by taking in the elements relating to human comfort from the target room 1 and the like, this PMV is set to the PMV target reference value, P
When the PMV exceeds the upper and lower limits of the PMV determined from the MV allowable width, the operation and stop of the air conditioner are repeated using the control parameters indexed from the average valve opening in the continuous operation in advance, so that the operation time of the air conditioner is reduced. In addition to energy saving, the energy consumption of cold or hot water can be reduced as much as possible, and satisfactory comfort for residents can be ensured.

The present invention is not limited to the above-described embodiment, but can be variously modified without departing from the scope of the invention. For example, recently used PM as a comfort index
Although V was used, a comfort index other than PMV (for example, operating temperature, new standard temperature, etc.) may be used, and variables of comfort include temperature, average radiant temperature, airflow velocity, humidity, clothing state, and activity state. However, the present invention can be similarly applied to the case where the PMV is calculated using any of these variables.

[0091]

As described above, according to the present invention, since the air conditioner is controlled intermittently, the operation time of the air conditioner can be shortened. By performing the intermittent operation using a control parameter determined to have a valve opening smaller than the valve opening, energy consumption of cold or hot water during operation of the air conditioner can be suppressed as much as possible.

Further, by using the comfort index while adopting the intermittent operation control of the air conditioner, it is possible to secure satisfactory occupant comfort.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing one embodiment of an air conditioner operation control device according to the present invention.

FIG. 2 is a configuration diagram showing another embodiment of the air conditioner operation control device according to the present invention.

FIG. 3 is a configuration diagram showing still another embodiment of the air conditioner operation control device according to the present invention.

FIG. 4 is a diagram illustrating a state of energy consumption of cold water by intermittent operation control in the device of the present invention.

FIG. 5 is a configuration diagram showing still another embodiment of the air conditioner operation control device according to the present invention.

FIG. 6 is a diagram showing a specific configuration example of a PMV calculation unit shown in FIG. 5;

FIG. 7 is a configuration diagram showing still another embodiment of the air conditioner operation control device according to the present invention.

FIG. 8 is a configuration diagram showing still another embodiment of the air conditioner operation control device according to the present invention.

FIG. 9 is a diagram illustrating a conventional general intermittent operation control method.

FIG. 10 is a comparison diagram of cold water consumption energy in continuous operation control and conventional intermittent operation control.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Target room 2 ... Air conditioner 3 ... Thermometer 4, 4A ... Intermittent operation command means 5, 5A ... Valve opening degree table 6, 6A ... Controller 7-9 ... Operating valve 11 ... Enthalpy calculation means 21 ... Continuous operation average valve Opening degree calculation means 22 ... Control parameter table 23, 23A ... Intermittent operation control means 34 ... PMV calculation unit 51 ... Room temperature set value calculation unit

Claims (5)

[Claims] 1. An air conditioner operation control device for performing intermittent operation control of an air conditioner according to a target room temperature, wherein an external environmental condition and a valve opening for suppressing energy consumption of cold or hot water during operation of the air conditioner are determined in advance. Set valve opening degree table, When the target room temperature exceeds a predetermined temperature upper / lower limit set value, take out the valve opening degree from the valve opening degree table with the current external environmental condition as an index for cold water or And an intermittent operation control system for opening and controlling the hot water operation valve. 2. An air conditioner operation control device for performing intermittent operation control of an air conditioner in accordance with a target room temperature, wherein the air conditioner is continuously operated under predetermined control parameters, and the chilled water is supplied to the air conditioner at that time. Or a continuous operation average valve opening calculating means for calculating the average valve opening by taking in a valve operation command of the hot water operation valve, and an average valve opening calculated by the continuous operation average valve opening calculating means during intermittent operation. A control parameter table in which intermittent operation control parameters are set so as to have a smaller valve opening degree, and when the target room temperature exceeds a predetermined temperature upper / lower limit set value, the control parameter table is stored in the control parameter table. An intermittent operation control system for controlling the opening of a cold water or hot water operation valve by using an intermittent operation control parameter. 3. An air conditioner operation control device for performing an intermittent operation control of an air conditioner, wherein a valve opening degree is set in advance to prevent external environmental conditions and energy consumption of cold or hot water during operation of the air conditioner. Opening degree table, measuring means for measuring various variables for obtaining the comfort index, PMV calculating means for calculating the comfort index using the variables measured by the measuring means and other necessary condition variables. When the comfort index obtained by the PMV calculating means exceeds a predetermined comfort index upper / lower limit set value, the valve opening is taken out from the valve opening table by using the current external environmental condition as an index, and chilled water is obtained. And an intermittent operation control system for controlling the opening of the operating valve for water or hot water. 4. An air conditioner operation control device for performing an intermittent operation control of an air conditioner, wherein the air conditioner is continuously operated under a predetermined control parameter, and an operation valve for cold water or hot water to the air conditioner at that time. A continuous operation average valve opening calculating means for calculating an average valve opening degree by taking in the valve operation command, and a valve opening smaller than the average valve opening degree calculated by the continuous operation average valve opening calculating means during intermittent operation. A control parameter table in which intermittent operation control parameters are set to a certain degree, measuring means for measuring various variables for obtaining a comfort index, variables measured by the measuring means, and other necessary conditions PMV calculating means for calculating a comfort index using a variable; and when the comfort index obtained by the PMV calculating means exceeds a predetermined comfort index upper / lower limit set value, the control parameter Air conditioner operation control apparatus characterized by comprising a an intermittent operation control system for opening control of the cold water or hot water operation valve with the intermittent operation control parameters stored in Buru. 5. The air conditioner operation control device according to claim 2, wherein the control parameter table indicates that the valve opening during intermittent operation is 1 / m of the average valve opening during continuous operation. (M is 1.1 ~
An air conditioner operation control device characterized by setting control parameters such as the following: