JP2508801B2 - Air conditioning system controller - Google Patents

Description

Description: [Industrial application] The present invention relates to an air conditioning system control device that automatically controls an indoor environment so that the occupant is comfortable.

[Prior Art] As a conventional method for considering a comfortable environment for indoor occupants, air temperature, humidity, and radiation temperature are detected as environmental elements disclosed in Japanese Patent Laid-Open No. 61-29638, and the amount of clothing of a person is further detected. And the amount of activity can be set by the setter to control the environmental control device within the comfortable range.

[Problems to be Solved by the Invention] In the above conventional example, the indoor radiant temperature is detected by a detector. However, the indoor radiant temperature has a different indoor distribution of the radiant temperature due to the difference in the structure of the room, and The detection value of the radiant temperature differs depending on the orientation and the installation position of the detector, and it is difficult to expect the detected value of the radiant temperature to be accurate. Also,
Radiant temperature detectors in the room were generally expensive.

Therefore, the present invention uses an expensive detector without being affected by the difference in the structure of the room, the difference in the distribution of the radiation temperature in the room, and the difference in the detected value of the radiation temperature due to the orientation and installation position of the detector. It is an object of the present invention to provide an air conditioning system control device that can determine the radiant temperature in the room without a problem and obtain a comfortable environment.

[Means for Solving the Problems] An air conditioning system control device according to the present invention is installed in a room and adjusts environmental elements in the room.
Two or more air conditioning-related devices such as a humidifier, a ceiling fan, and a floor heater, and an environmental element detection input means to which output signals from an indoor temperature detector, a humidity detector, and an outdoor outside air temperature detector are supplied. , The amount of clothes, the amount of activity, and the air flow velocity setting means, the indoor air temperature detected by the outdoor air temperature detector, and the indoor air temperature detected by the indoor temperature detector multiplied by respective weighting factors And the average radiation temperature of
An average radiant temperature determining means for changing the value of the weighting coefficient in a time zone from the start of the air conditioning system operation to a predetermined time and a time zone after the predetermined time has elapsed, and a detection value of the detection input means of the environmental element and the The comfort level calculating means for calculating the comfort level from the set values of the setting means for the clothing amount, the activity amount, and the air flow velocity and the output of the average radiation temperature determining means, the predetermined comfort range setting means, and the comfort range are set. In order to make the comfort range setting changing means for changing and the calculated value from the comfort level calculating means fall within the comfort level setting range, the comfort level of each air conditioning-related device within the setting range Of each of the air-conditioning related devices, and as a result, operation selecting means for determining whether to operate or stop each of the air-conditioning related devices according to the operation priority of each of the air-conditioning related devices, and each of the air-conditioning related devices by the operation selecting means Luck It is provided with a device control means for performing an instruction.

[Operation] The means for determining the average radiant temperature in the air-conditioning system control device of the present invention is the average radiant temperature in the room, which is the sum of the outside air temperature detected by the environmental element detection input means and the room temperature multiplied by the weighting coefficient. Further, the value of the weighting factor is changed between the time zone from the start of the operation of the air conditioning system to the predetermined time and the time zone after the lapse of the predetermined time, and the average radiant temperature and the temperature of the room from the environmental element detecting means are changed. The indoor comfort level is calculated by the comfort level calculation means from the detected value of humidity, and the set values of the clothing level, the activity level and the air flow rate by the setting means of the clothing level, the activity level and the air flow rate. In order that the calculated value falls within the comfort level setting range set by the comfort range setting means or the comfort range setting changing means, the operation selection means uses the air conditioners and ventilations installed in the room within the set range. Setting range of comfort level for each air-conditioning device consisting of two or more devices, humidifier, ceiling fan, floor heater,
The comfort upper limit and lower limit are set individually, and as a result, the operation or stop of each air conditioning related device is decided according to the operation priority of each air conditioning related device. It outputs an instruction to operate or stop related equipment to control each air conditioning related equipment.

[Embodiment] FIG. 1 is a block diagram showing an overall schematic configuration diagram of an air conditioning system control device according to an embodiment of the present invention, and FIG. 2 is an air conditioning system of an embodiment of the present invention shown in FIG. It is a whole block diagram of a control apparatus.

In the figure, (1) to (5) are air-conditioning-related devices installed in a room (17) to adjust environmental elements in the room (17), and (1) is a cooling / heating machine having a cooling / heating function, ( 2)
Is a ventilation device with the function of introducing outside air into the room (17),
(3) is a humidifier having a humidifying function, (4) is a ceiling fan having a function of producing a cooling effect by airflow, and (5) is a floor heater having a heating function by radiation. (6) is a temperature detector that detects the temperature of air in the room (17), (7) is a humidity detector that detects the temperature of the room (17), (8) is an outside air temperature detector that detects the temperature of the outside air, (9) is an environmental element detection input means for detecting indoor temperature, humidity, and outside air temperature by output signals from the temperature detector (6), the humidity detector (7), and the outside air temperature detector (8), 10) is a means for setting the amount of clothing and activity of the resident and the air flow velocity in the room for setting the amount of clothing, activity and air flow velocity, and (11) is the room detected by the detection input means (9) of the environmental element The average radiant temperature of the room (17) is the sum of the temperature of the air and the outside air temperature multiplied by the weighting coefficient, and the average radiation temperature in the room (17) Means for determining the average radiant temperature for changing the value of the weighting factor, (12) is the detection input of the environmental element Means detecting value and the clothing amount and activity amount and air flow speed setting means (10) according to amount of clothing and activity amount and the air flow speed and the set value determining means of the average radiation temperature of from (9) (11)
The comfort level calculating means for calculating the comfort level in the room (17) from the average radiant temperature determined by (13) is the comfort range setting means for setting the comfort range, and (14) is the comfort range setting means ( The comfort range setting changing means for changing the comfort range set by 13) as necessary, (15) the comfort value calculated by the comfort calculating means (12) is the comfort range setting. The setting range is set by the means (13) or the comfort range setting changing means (14), and the air conditioner (1), the ventilation device (2), the humidifier ( 3), ceiling fan (4), floor heater (5), the setting range of the comfort level of each air conditioning related device, that is,
An operation selection means for setting the comfort upper limit value and the comfort lower limit value individually, and consequently determining whether to operate or stop each air conditioning-related device according to the operation priority of each air conditioning related device, (16)
Is operated by the air conditioner (1), the ventilation device (2), the humidifier (3), the ceiling fan (4) and the floor heater (5) according to the operation selection means (15) or The device control means outputs a stop instruction.

In FIG. 2, (17) is indoors, and the air conditioner (1), the ventilation device (2), the humidifier (3), and the ceiling fan (4) are installed on the ceiling (18), and the floor heating is provided on the floor. A vessel (5) is installed. (19) and (20) are an intake duct and an exhaust duct of the ventilation device (2). The reference numeral (21) is installed on the wall surface of the room (17), etc., and the detection input means (9) for the environmental elements, the setting means (10) for the amount of clothing, the amount of activity and the air flow velocity, and the means (11) for determining the average radiation temperature. , A comfort level calculating means (12), a comfortable range setting means (13), a comfortable range setting changing means (14), an operation selecting means (15), a device control means (16), and the temperature detector. (6), a humidity detector (7), an outside air temperature detector (8), and a control device including a setting change switch (22) of the comfort range setting change means (14). (twenty three)~
(27) is installed in the ceiling or the like, receives the output signal of the operation or stop instruction from the device control means (16) of the control device (21), and humidifies the air conditioner (1) and the ventilation device (2). A controller such as a relay for controlling each air conditioner-related device such as the air conditioner (3), the ceiling fan (4), and the floor heater (5), and (28) through the respective controllers (23) to (27), Air conditioning related equipment (1) ~
It is a power source for supplying power to (5).

The comfort level calculated by the comfort level calculation means (12) of the control device (21) is the International Standardization Organization (Internationa Organization).
l Organization for Standardization (ISO) international standard
PMV (Predicted Mean Vote) described in ISO-7730
Use what is said to be.

This comfort level PMV is due to room temperature t, which is one of the many environmental factors in the room.
a, humidity Pa, radiant temperature tr, air flow velocity Var, clothing amount Icl, activity amount M, etc., which can be obtained from these values by the formula described in ISO-7730. Shown on a sensory scale.

+3 ... hot, +2 ... warm, +1 ... a little warm 0 ... neither -1 ... a little cool, -2 ... cool, -3 ... cold This formula and calculation method are well known from the ISO-7730, and the present invention Since it is not directly related to the gist of the above, its detailed description is omitted.

FIG. 3 is a block diagram showing the hardware configuration of the air conditioning system control device of the embodiment shown in FIG.

In FIG. 3, (29) is a microcomputer in the control device (21), which includes a central processing unit CPU (30), memory (31), timer (32), input circuit (33), output circuit (34). )have. (35) is an analog multiplexer into which the detection outputs of the temperature detectors (6), humidity detectors (7) and outside air temperature detectors (8) are input, and (36) is selected by the analog multiplexer (35). An A / D converter that converts the output into a digital signal, the output of which is given to the input circuit (33). The setting change switch (2
2) consists of, for example, a "cold" switch (22a) and a "hot" switch (22b), and this "cold" switch (22a)
The status signal of each switch of a) and the "hot" switch (22b) is also given to the input circuit (33). Each controller (2
3) to (27) are connected to the output circuit (34).
Each of the controllers (23) to (27) includes the air conditioner (1), the ventilation device (2), the humidifier (3), the ceiling fan (4), and the floor heater (5) related to air conditioning. Are respectively connected. The CPU (30) includes means for setting clothing amount, activity amount, and air flow velocity (10), means for determining average radiation temperature (11),
Comfort degree calculation means (12), comfort range setting means (13),
Comfort range setting change means (14), driving selection means (15),
It is programmed to execute the functions of the device control means (16) and the like.

The air-conditioning system control device of this embodiment is configured as described above, and the operation thereof will be described in the control flow chart of FIG. 4 and the operation selecting means of each air-conditioning related device of this embodiment of FIG. 5 and FIG. This will be described in detail with reference to the explanatory diagram shown.

First, start by turning on the power of the control device (21),
In step S1, the items necessary for starting operation and the initial value such as the comfort range of the comfort level PMV value are set, in step S2 the clothing amount of the resident is set, in step S3 the activity amount is set, and step S4
To set the indoor air flow velocity (corresponding to the clothing amount, activity amount, and air flow velocity setting means (10) in FIG. 1). Then, step S5
The outputs from the temperature detector (6), the humidity detector (7), and the outside air temperature detector (8) are analog multiplexers (35).
And the A / D converter (36) to the input circuit (33) to detect the indoor temperature, humidity, and outside air temperature (environmental element detection input means (9) in FIG. 1). Corresponding to).

In step S6, the sum of the temperature of the room (17) detected in step S5 and the outside air temperature multiplied by the weighting coefficient is taken as the average radiant temperature of the room (17), and further, it is determined from the start of the operation of the air conditioning system. The average radiation temperature is determined by changing the value of the weighting coefficient depending on the time period up to the time and the time period after the elapse of the predetermined time. The formula for obtaining the average radiation temperature MRT is shown below.

MRT = a x To + b x Ta ...... MRT = c x To + d x Ta ... where To: outside air temperature [° C] Ta: indoor temperature [° C] a, b, c, d: weighting factor That is, air conditioning system In the time zone from the start of operation to the predetermined time, the average radiation temperature MRT is calculated by the formula,
After the specified time has passed, the average radiation temperature MR
Ask for T. For a while after the start of operation, it is assumed that the inside surface temperature of the wall is greatly influenced by the outside air temperature, and the value of the weighting coefficient a is set to be larger than the value of the weighting coefficient c to determine the average radiation temperature MRT.
To determine. The sum of coefficient a and coefficient b is 1.0,
The sum of the coefficient c and the coefficient d is also 1.0.

Next, in step S7, a comfort PMV value is calculated from the set values in steps S2, 3, and 4, the detected value in step S5, and the average radiant temperature determined in step S6 (see the comfort level in FIG. 1). Corresponding to the computing means (12)). Then, in step S8, it is determined whether or not the comfortable range setting change switch (22) has been operated. If not, in step S10 the PMV value calculated in step S7 and the PMV value setting range of each air conditioning-related device ( (Comparable to the comfort range setting means (13) in FIG. 1), and depending on the condition of the indoor / outdoor air temperature difference,
As shown in the operation selecting means (corresponding to the operation selecting means (15) in FIG. 1) of each air conditioning-related device, the operation or stop of each air conditioning related device is determined.

For example, for cooling in the summer or in the middle of the period, among the air conditioning-related devices having the above-mentioned functions, a cooling / heating machine (1) having a cooling function, and a ventilation device (2) having a function of introducing outside air into the room. , The ceiling fan (4) having the function of producing the cooling effect by the air flow is set as the control target device, and the current comfort level PMV value obtained in step S7 is the PMV setting upper limit value of the ceiling fan (4) + 0.5 or more. In the case of, the ceiling fan (4) is turned on. Due to the cooling effect of the air flow by the operation of the ceiling fan (4), the increase in PMV value can be suppressed. At this time, if the indoor / outdoor temperature difference is 3 ° C. or more, the ventilation device (2) is also turned on. By operating the ventilation device (2), outside air is introduced to cool the outside air. Then, when the cooling load increases and the PMV value becomes equal to or higher than the PMV setting upper limit value +1.0 of the air conditioner (1), the air conditioner (1) is turned on. The PMV value decreases due to the operation of the air conditioner (1), and the air conditioner (1)
When the PMV setting lower limit value of is less than +0.5, first, the cooling / heating machine (1) is determined to be turned off. Further, when the PMV value decreases and becomes equal to or lower than the PMV setting lower limit value 0 of the ceiling fan (4), it is determined that the ceiling fan (4) is off.

As described above, in the cooling such as in the summer, when the indoor / outdoor temperature difference is 3 ° C. or more, the ventilation device (2) is also turned on, and the outdoor air is actively introduced to perform the outdoor air cooling to cool the indoor / outdoor temperature. When the difference is 3 ° C. or less, the ceiling fan (4) is first turned on, and then the air conditioner (1) is turned on if necessary. On the contrary, when the PMV value is decreasing, the cooling / heating machine (1) is first turned off, and then the ceiling fan (4) is turned off.

For heating in the winter season, the air conditioner (1) having a heating function, the humidifier (3) having a humidifying function, and the floor heater (5) having a heating function by radiation are controlled devices, for example, PMV.
When the value is less than or equal to the PMV setting lower limit value-1.0 of the air conditioner (1), the floor heater (5) and the air conditioner (1) are turned on. When the PMV value rises and becomes equal to or higher than the PMV setting upper limit value -0.5 of the air conditioner (1), first, the air conditioner (1) is determined to be off, and heating is only radiant heating by the floor heater (5), Further, when the PMV value rises and becomes equal to or higher than the PMV setting upper limit value 0 of the floor heater (5), it is determined that the floor heater (5) is off. On the contrary, when the PMV value falls from this state and becomes below the PMV setting lower limit value -0.5 of the floor heater (5), first, it is decided to turn on the floor heater (5), and the PMV value further falls. Then, when the PMV setting lower limit value of the air conditioner (1) becomes equal to or lower than -1.0, the control is such that the air conditioner (1) is turned on. Also, the PMV value is the lower limit value of the PMV setting of the air conditioner (1) −1.
If 0 or more and the relative humidity is 30% or less of the relative humidity setting lower limit value, it is determined in step S11 that the humidifier (3) is turned on, and if the relative humidity is 40% or more of the relative humidity setting upper limit value, The control is such that the humidifier (3) is turned off.

In this way, when the ON / OFF decision of each air conditioning related device is made in step S10 and step S11, in step S12, based on the ON / OFF decision of each air conditioning related device in step S10 and step S11, the output circuit An on / off control signal is output to each of the controllers (23) to (27) via (34) (corresponding to the device control means (16) in FIG. 1). And
If it is an ON signal, electric power is supplied from the power supply (28) to each air conditioning-related device via the corresponding controller (23) to (27). Next, in step S13, the timer (32)
The routine from step S5 to step S12 is repeatedly executed at regular intervals.

Next, set the comfort range setting switch (22) to "Cold"
When the switch (22a) or the "hot" switch (22b) is operated by the occupant, it is judged in step S8, and the comfort range setting is changed in step S9.
The V set upper limit value and the set lower limit value slide up or down, and as a result, the PMV set upper limit value and the set lower limit value set for each air conditioning-related device also slide similarly (first
Corresponds to the comfort range setting changing means (14) in the figure).

FIG. 6 shows the operation selecting means of each air conditioning-related device by an example of slide change of the PMV set upper limit value and the PMV set lower limit value by operating the "cold" switch (22a) and the "hot" switch (22b). For example, when the resident operates the "cold" switch (22a), the value changes by +0.5 slides in step S9, and when the "hot" switch (22b) operates, the value changes by -0.5 slides. Is changed to and is used in step S10 to determine ON / OFF of each air conditioning-related device.

In the above description, a specific air conditioning-related device has been described as an example, but the present invention is not limited to this, and any air conditioning-related device having the same function may be controlled by the same control device. It can be performed.

[Advantages of the Invention] As described above, according to the air conditioning system control device of the present invention, the sum of the outside air temperature detected by the environmental element detecting means and the room temperature multiplied by the weighting coefficient is the average indoor radiant temperature. The value of the weighting factor is changed between the time period from the start of the air conditioning system operation to the predetermined time period and the time period after the predetermined time has elapsed, and the average radiation temperature and the room temperature and humidity from the environmental element detecting means are set. The indoor comfort level is calculated by the comfort level calculation means from the detected value of the wear rate and the set values of the wear level, activity level and air flow rate by the setting means of the clothing level, the activity level and the air flow rate. In order to make the comfort range set by the comfort range setting means or the comfort range setting change means, the operation selection means sets the indoor air conditioner / heater, ventilation device, humidifier, or ceiling fan within the set range. ,
The comfort level setting range is set individually for each air conditioning-related device consisting of two or more floor heaters, and as a result, the operation or stop of each air conditioning-related device is determined according to the operation priority of each air conditioning-related device. Depending on the determination, the device control means outputs an operation or stop instruction for each air conditioning related device to control each air conditioning related device.

Therefore, since the sum of the outside air temperature and the indoor air temperature multiplied by the weighting coefficient is determined as the average radiation temperature, it depends on the structure of the room, the distribution of the radiation temperature in the room, the orientation of the detector, and the installation position. The difference in the detected value of the radiant temperature can be dealt with by multiplying the weighting coefficient, the radiant temperature can be determined without using an expensive detector, and each air conditioner can be controlled.

[Brief description of drawings]

FIG. 1 is a block diagram showing an overall schematic configuration of an air conditioning system control device according to an embodiment of the present invention, and FIG.
Overall configuration diagram of the air conditioning system control device of the embodiment shown in the figure,
FIG. 3 is a block circuit diagram showing the hardware configuration of the air conditioning system controller of the embodiment shown in FIG. 1, and FIG.
FIG. 5 and FIG. 6 are control flowcharts of the air-conditioning system control device of the embodiment shown in the drawings, and are explanatory views showing the operation selecting means of each air-conditioning related device of the embodiment shown in FIG. In the figure, 1: Air conditioner, 2: Ventilator, 3: Humidifier, 4: Ceiling fan, 5: Floor heater, 6: Temperature detector, 7: Humidity detector, 8: Outside air temperature detector, 9: Environmental element detection input means, 10: clothing amount, activity amount and air flow velocity setting means, 11: average radiant temperature determination means, 12: comfort level calculation means, 13: comfort range setting means, 14: comfort range Setting change means, 15: operation selection means, 16: device control means,
Is. In the drawings, the same reference numerals and the same symbols indicate the same or corresponding parts.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masamitsu Kawashima, 3-18-1, Oga, Shizuoka City, Shizuoka Prefecture Mitsubishi Electric Corporation Shizuoka Factory (56) Reference JP-A-63-156968 (JP, A) JP Showa 62-288437 (JP, A) Showa 58-43722 (JP, Y2)

Claims (1)

(57) [Claims] 1. An air-conditioning device comprising two or more units, such as an air conditioner, a ventilation device, a humidifier, a ceiling fan, and a floor heater, which are installed indoors to regulate environmental elements in the room, and an indoor temperature detector and humidity detector. Device, an environmental element detection input means to which an output signal from the outdoor air temperature detector is supplied, a setting means for setting the amount of clothing, the amount of activity and the air flow velocity, the outdoor air temperature detected by the outdoor air temperature detector and the The average radiant temperature in the room is the sum of the indoor air temperature detected by the indoor temperature detector multiplied by each weighting coefficient, and the time period from the start of the air conditioning system operation to the predetermined time and the time after the predetermined time has elapsed. Means for changing the value of the weighting coefficient, the detection value of the detection input means of the environmental element, the set value of the setting means for the clothing amount, the amount of activity, and the air flow velocity, and the determination of the average radiation temperature. Output of means Comfort degree calculating means for calculating the comfort degree, predetermined comfort range setting means, comfort range setting changing means for changing the comfort range as necessary, and calculation from the comfort degree calculating means In order to set the value to the comfort level setting range, the comfort level setting range is separately set for each air conditioning related device within the setting range, and as a result, the air conditioning related devices according to the operation priority order of each air conditioning related device. An air conditioning system control device comprising: an operation selecting unit that determines whether the device is operated or stopped; and a device control unit that issues an operation instruction to each of the air conditioning related devices by the operation selecting unit.