US20120118986A1 - Controlling device and method - Google Patents
Controlling device and method Download PDFInfo
- Publication number
- US20120118986A1 US20120118986A1 US13/296,586 US201113296586A US2012118986A1 US 20120118986 A1 US20120118986 A1 US 20120118986A1 US 201113296586 A US201113296586 A US 201113296586A US 2012118986 A1 US2012118986 A1 US 2012118986A1
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- United States
- Prior art keywords
- setting value
- room temperature
- temperature setting
- supply air
- flow rate
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/044—Systems in which all treatment is given in the central station, i.e. all-air systems
- F24F3/0442—Systems in which all treatment is given in the central station, i.e. all-air systems with volume control at a constant temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/76—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by means responsive to temperature, e.g. bimetal springs
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/1927—Control of temperature characterised by the use of electric means using a plurality of sensors
- G05D23/193—Control of temperature characterised by the use of electric means using a plurality of sensors sensing the temperaure in different places in thermal relationship with one or more spaces
- G05D23/1932—Control of temperature characterised by the use of electric means using a plurality of sensors sensing the temperaure in different places in thermal relationship with one or more spaces to control the temperature of a plurality of spaces
- G05D23/1934—Control of temperature characterised by the use of electric means using a plurality of sensors sensing the temperaure in different places in thermal relationship with one or more spaces to control the temperature of a plurality of spaces each space being provided with one sensor acting on one or more control means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2221/00—Details or features not otherwise provided for
- F24F2221/34—Heater, e.g. gas burner, electric air heater
Definitions
- the present invention relates to a controlling device and method in a VAV control system, or the like.
- an operating quantity for example, a valve opening degree, a VAV damper opening degree, or the like
- a PID calculation from a deviation of a current temperature so that a controlled area room temperature goes to a setting temperature.
- VAV variable air volume
- a VAV control system the volume of a thermal medium (cold water or hot water) that is supplied to an air conditioner is controlled by an air conditioning controlling device.
- the air conditioner the supply air, blown out by a fan, is supplied through a supply air duct to the VAV units of each of the controlled areas, to pass through the VAV units, to be supplied to the controlled areas.
- a VAV control unit is provided for each controlled area.
- the VAV control unit calculates the required air flow rate for the controlled area based on the deviation between the room temperature measured value PV and the room temperature setting value SP of the controlled area, and controls the degree of opening of the damper of the VAV unit.
- the air conditioning controlling device calculates the total required air flow rate for the system as a whole from the required air flow rates sent from the VAV control units, calculates the speed of rotation of the fan from the total required air flow rate, and controls the air conditioner to achieve the calculated speed of rotation of the fan.
- the VAV control unit sends a cooling increased capacity request status when, during cooling, the room temperature measured value PV does not fall to become the room temperature setting value SP, and sends a heating increased capacity request status when, during heating, the room temperature measured value PV does not increase to the room temperature setting value SP.
- the air conditioning controlling device changes the air conditioner supply air temperature in accordance with the cooling increased capacity request status or heating increased capacity request status sent from the VAV control unit. Increasing the supply air temperature capacity in this way is known as “load reset control.”
- the VAV control unit changes the requested airflow rates and controls the degree of opening of the VAV unit damper to cause the room temperature measured value PV to approach the room temperature setting value SP.
- the maximum air flow rate has already been reached, then it is not possible to reduce the room temperature by changing the air flow rate.
- the VAV control unit sends a cooling increased capacity request status if, at the time of cooling, the room temperature measured value PV does not fall to become the room temperature setting value SP, but some time is required until the cooling increased capacity request status is sent, and thus some time will be required until the room temperature falls.
- this type of load reset control it may not be possible to respond promptly to a request from a user desiring an improvement in the temperature environment. In order to achieve a prompt response, it has been necessary to turn OFF the load reset control and to reduce the supply air temperature manually.
- the air-conditioning control has been achieved through PID control that tracks to the setting values.
- the request from the resident is not that “I want the temperature within the room to be 25° C.,” but rather often means that “I'm a little hot, so would like to be cooler.”
- control stability is emphasized when determining the control outputs of the air-conditioning equipment so as to not overshoot, in order to go to 25° C.; however, there have been complaints that if the result of the control output calculation is a state wherein change is slow, then the resident who has changed the setting will be unaware of the change in temperature.
- the present invention is to resolve the problem areas set forth above, and the object thereof is to provide a controlling device and method able to achieve prompt response to a request from a user desiring to improve the environment.
- the controlling device includes setting value obtaining means for obtaining a setting value for control; and changing means for changing temporarily a control output quantity in a direction that will promote tracking to a setting value through feed-forward control in accordance with a change in the setting value.
- the setting value obtaining means obtain a controlled area room temperature setting value; and the changing means change temporarily a control output quantity, for a device for controlling the temperature environment of a controlled area, in accordance with a change in the room temperature setting value.
- the device for controlling the temperature environment of the controlled area is an air conditioner and/or a heater; and the control output quantity is a supply air temperature setting value in an air conditioner, a flow rate to the controlled area, a degree of opening of a control valve for controlling a quantity of a thermal medium that is supplied to the air conditioner, and/or a heater operating quantity.
- the changing means change the control output quantity only when a resident of the controlled area has changed the room temperature setting value.
- a controlling method includes a a setting value obtaining step for obtaining a setting value for control; and a changing step for changing temporarily a control output quantity in a direction that will promote tracking to a setting value through feed-forward control in accordance with a change in the setting value.
- the present examples enable an improvement in the comfort for the user through enabling responsive control based on a user request, through performing control that increases or decreases the control output quantity in the direction that will promote tracking to a setting value (feed-forward control) after detecting the action of a change in the setting value.
- the result is that the present invention is able to reduce extremely complaints from users that, for example, they are too hot or too cold.
- the application of the present invention to a VAV control system enables increases in the decentralization of air conditioning control, in operability, and in comfort.
- FIG. 1 is a block diagram illustrating a structure of a VAV controlling system according to an example.
- FIG. 2 is a block diagram illustrating a structure of an air conditioning controlling device of a VAV controlling system according to the example.
- FIG. 3 is a flowchart illustrating the operation of the air conditioning controlling device of a VAV controlling system according to the example.
- FIG. 4 is a diagram illustrating an example of the relationship between an amount of change in the room temperature setting value and an amount of change in a supply air temperature setting value.
- FIG. 5 is a block diagram illustrating a structure of a VAV control unit of a VAV controlling system according to another example.
- FIG. 6 is a flowchart illustrating the operation of a VAV control unit of a VAV controlling system according to the other example.
- FIG. 1 is a block diagram illustrating a structure of a VAV controlling system according to a first form of embodiment according to the present invention.
- the VAV control system of the present example includes an air conditioner 1 ; a cold water valve 2 for controlling the quantity of cold water to the air conditioner 1 ; a hot water valve 3 for controlling the quantity of hot water to the air conditioner 1 ; an supply air duct 7 for providing supply air from the air conditioner 1 to the controlled area 9 ; a VAV unit 8 for controlling, for each controlled area, the quantity of supply air supplied to the controlled area 9 ; a VAV control unit 11 that is a controlling device for controlling the VAV unit 8 ; an air conditioning controlling device 12 for controlling the cold water valve 2 and the hot water valve 3 ; a temperature sensor 13 for measuring the room temperature of the controlled area 9 ; a return duct 14 ; an exhaust air adjusting damper 15 for adjusting the volume of air that is exhausted to the outside; a return air adjusting damper 16 for adjusting the volume of return air that is returned to the air conditioner 1 ; an outside air adjusting damper 17 for adjusting the volume of outside air drawn in to the air conditioner 1 ; a temperature sensor 18 for measuring
- the air conditioner 1 is structured from a cooling coil 4 , a heating coil 5 , and a fan 6 .
- a VAV unit 8 and a VAV control unit 11 are provided for each controlled area.
- a damper, not shown, is provided within the VAV unit 8 , so as to be able to adjust the volume of supply air that passes through the VAV unit 8 .
- 10 is a supply air blower vent
- 20 is an outside air intake vent.
- the speed of rotation of the fan 6 and the degrees of opening of the cold water valve 2 and the hot water valve 3 are controlled by the air conditioning controlling device 12 .
- the volume of cold water supplied to the cooling coil 4 of the air conditioner 1 is controlled by the cold water valve 2 .
- the volume of hot water supplied to the heating coil 5 of the air conditioner 1 is controlled by the hot water valve 3 .
- the air that is cooled by the cooling coil 4 or the air that is heated by the heating coil 5 is blown out by the fan 6 .
- the air that is blown out by the fan 6 (that is, the supply air) is supplied through the supply air duct 7 to the VAV unit 8 of each of the controlled areas 9 , so as to be supplied to each of the controlled areas 9 through the VAV units 8 .
- the VAV control unit 11 calculates a required air flow rate for the controlled area 9 based on the deviation between the room temperature measured value PV, measured by the temperature sensor 13 in the controlled area 9 , and the room temperature setting value SP, and sends the required air flow rate value to the air conditioning controlling device 12 , and also controls the opening of the damper (not shown) within the VAV unit 8 so as to ensure this required air flow rate.
- the air conditioning controlling device 12 calculates a total required air flow rate value for the system as a whole from the required air flow rate values that are sent from the individual VAV control units 11 , calculates the rotational speed of the fan in accordance with the total required air flow rate value, and controls the air conditioner 1 so as to produce the calculated fan rotational speed.
- the VAV control unit 11 sends a cooling increased capacity request status when the room temperature measured value PV at the time of cooling does not fall to become the room temperature setting value SP, and sends a heating increased capacity request status when the room temperature measured value PV, at the time of heating, does not rise to reach the temperature setting value SP.
- the air conditioning controlling device 12 changes the supply air temperature in accordance with the cooling increased capacity request status or the heating increased capacity request status that is sent from the VAV control unit.
- outside air is drawn in, through the outside air adjusting damper 17 , at a specific proportion relative to the return air that is returned to the air conditioner 1 .
- the respective degrees of opening of the exhaust air adjusting damper 15 , the return air adjusting damper 16 , and the outside air adjusting damper 17 are controlled by the air conditioning controlling device 12 .
- the air conditioning controlling device 12 at the time of a cooling operation by the air conditioner 1 , sets the degree of opening of the hot water valve 3 to 0% and controls the degree of opening of the cooling water valve 2 so that the supply air temperature measured value, measured by the temperature sensor 18 , will match the supply air temperature setting value. Moreover, the air conditioning controlling device 12 , at the time of a heating operation of the air conditioner 1 , sets the degree of opening of the cooling water valve 2 to 0%, and controls the degree of opening of the heating water valve 3 so that the supply air temperature measured value, measured by the temperature sensor 18 , will match the supply air temperature setting value.
- FIG. 2 is a block diagram illustrating one configuration of an air conditioning controlling device 12 according to the present form of embodiment.
- FIG. 3 is a flowchart illustrating the operation of an air conditioning controlling device 12 according to the present example.
- the air conditioning controlling device 12 comprises: a room temperature measured value for obtaining the room temperature measured values PV for each of the controlled areas 9 , through each of the VAV control units 11 ; a room temperature setting value obtaining portion 121 for obtaining the room temperature setting values SP for each of the controlled areas 9 through each of the VAV control units 11 ; a supply air temperature measured value obtaining portion 122 for obtaining the supply air temperature measured value measured by the temperature sensor 18 ; an operating quantity calculating portion 123 for calculating operating quantities that represent the degrees of opening of the cold water valve 2 and the hot water valve 3 ; a supply air temperature changing portion 124 for changing temporarily the supply air temperature setting value in accordance with a change in the room temperature setting value SP; and an operating quantity outputting portion 125 for outputting the operating quantities to the cold water valve 2 and the hot water valve 3 .
- the room temperature measured value obtaining portion 120 obtains the room temperature measured values PV of each of the controlled areas 9 through each of the VAV control units 11 ( FIG. 3 : Step S 1 ).
- the room temperature setting value obtaining portion 121 obtains the room temperature setting values SP of each of the controlled areas 9 through each of the VAV control units 11 ( FIG. 3 : Step S 2 ).
- the supply air temperature measured value obtaining portion 122 obtains the supply air temperature measured value measured by the temperature sensor 18 ( FIG. 3 : Step S 3 ).
- the supply air changing portion 124 compares the room temperature setting value SP, obtained in Step S 2 , to the previous value for the room temperature setting value SP, and if there is a difference, evaluates that there has been a change in the room temperature setting value SP (YES in FIG. 3 : Step S 4 ).
- the supply air changing portion 124 performs the evaluation in Step S 4 for the room temperature setting value SP for each individual controlled area 9 .
- the supply air temperature changing portion 124 if there is a change in even one of the room temperature setting values SP, changes the supply air temperature setting value temporarily in the increasing or decreasing direction depending on the change in the room temperature setting value SP ( FIG. 3 : Step S 5 ). If the room temperature setting value SP has been increased, then the supply air temperature setting value is increased, and if the room temperature setting value SP has been decreased, then the supply air temperature setting value is decreased.
- the supply air temperature changing portion 124 determines the amount of change in the supply air temperature setting value from the amount of change in the room temperature setting value SP in accordance with a relationship that has been established in advance.
- a relationship between the amount of change in the room temperature setting value SP had the amount of change in the supply air temperature setting value is illustrated in FIG. 4 . If, for example, the change in the room temperature setting value SP is an increase of +2° C. relative to the previous value, then the supply air temperature changing portion 124 sets the amount of change, relative to the current value for the supply air temperature setting value, to be +2° C. Moreover, if, for example, the change in the room temperature setting value SP is a reduction of ⁇ 2° C.
- the supply air temperature changing portion 124 sets the amount of change, relative to the current value for the supply air temperature setting value, to be ⁇ 2° C. In this way, the supply air temperature changing portion 124 changes the supply air temperature setting value temporarily. If multiple room temperature setting values SP of multiple controlled areas 9 are changed at about the same time, then the amount of change in the supply air temperature setting value may be determined in accordance with the maximum amount of change of the amounts of change in the multiple room temperature setting values SP. Note that the supply air temperature changing portion 124 may return the supply air temperature setting value to the value from prior to the change when a specific amount of time has elapsed after the change in the supply air temperature setting value.
- the operating quantity calculating portion 123 calculates an operating quantity in accordance with a specific control calculating algorithm so that the supply air temperature measured value obtained in Step S 3 will match the supply air temperature setting value ( FIG. 3 : Step S 6 ).
- the control calculating algorithm is, for example, a PID.
- the operating quantity outputting portion 125 outputs, to the cold water valve 2 and the hot water valve 3 , the operating quantities calculated by the operating quantity calculating portion 123 ( FIG. 3 : Step S 7 ).
- the degrees of opening of the cold water valve 2 and the hot water valve 3 are controlled in this way, to control the volume of the thermal medium (cold water or hot water) that is supplied to the air conditioner 1 .
- the degree of opening of the hot water valve 3 is constantly 0%
- the degree of opening of the cold water valve 2 is constantly set to 0%.
- the air conditioning controlling device 12 performs the processes in Step S 1 through S 7 , as described above, at regular intervals until the air conditioning control is terminated (YES in FIG. 3 : Step S 8 ). If there is no change in a room temperature setting value SP, then normal load reset control is performed.
- An operation of the room temperature setting value SP indicates a clear intention by a user regarding the temperature environment, and is different from a situation wherein there has merely been an increase or decrease in the load in the room that increases the deviation between the room temperature setting value SP and the room temperature measured value PV, and so should be responded to promptly.
- the action that is the change in the room temperature setting value is detected, and the supply air temperature setting value of the air conditioner 1 is controlled (in feed-forward control) in response thereto, to enable air conditioning control that is responsive to the request by the user, enabling improved user comfort.
- the change in the supply air temperature setting value may limited to only when the supply air flow rate to the controlled area 9 for which the room temperature setting value SP has changed is the maximum air flow rate. That is, if the supply air flow rate is not the maximum air flow rate, so that there is some margin, the response will be through load reset control.
- the user that has changed the room temperature setting value SP is not identified.
- the change in the supply air temperature setting value may be limited to only when the room temperature setting value SP has been changed through an operation of an operating device (not shown) that is provided in a controlled area 9 , that is, only if the change in the room temperature setting value SP can be assumed to be made by a resident. That is, it is possible to respond promptly based on a request from a room resident being a request that requires a prompt response.
- VAV control systems include also systems of methods wherein the air flow rate is controlled with a constant supply air temperature.
- the this example explain a case wherein the present examples are applied to such a system.
- the structure of the VAV control system in the present example is identical to that in the previous example, and thus the explanation uses the same references as are in FIG. 1 .
- the supply air temperature setting value will be constant, as described above.
- FIG. 5 is a block diagram illustrating one configuration of a VAV control unit 11 according to the present example.
- FIG. 6 is a flowchart illustrating the operation of the VAV control unit 11 according to the present example.
- the VAV control unit 11 includes a room temperature measured value obtaining portion 110 for obtaining a room temperature setting value PV, measured by the temperature sensor 13 of the corresponding controlled area 9 ; a room temperature setting value obtaining portion 111 for obtaining the room temperature setting value SP of the corresponding controlled area 9 ; an air flow rate calculating portion 112 for calculating the required air flow rate for the controlled area 9 based on the deviation between the room temperatures measured value PV and the room temperature setting value SP; a flow rate changing portion 113 for changing temporarily the required air flow rate depending on a change in the room temperature setting value SP; a required air flow rate value notifying portion 114 for providing notification to the air conditioning controlling device 12 of the required air flow rate value for the controlled area 9 ; and a controlling portion 115 for controlling the degree of opening of the damper within the VAV unit 8 so as to secure the required air flow rate.
- the room temperature measured value obtaining portion 110 obtains the room temperature measured value PV of the corresponding controlled area 9 ( FIG. 6 : Step S 10 ).
- the room temperature setting value obtaining portion 111 obtains the room temperature setting value SP for the corresponding controlled area 9 ( FIG. 6 : Step S 11 ).
- the air flow rate calculating portion 112 calculates the required air flow rate for the corresponding controlled area 9 based on the deviation between the room temperature measured value PV, obtained by the room temperature measured value obtaining portion 110 , and the room temperature setting value SP, obtained by the room temperature setting value obtaining portion 111 ( FIG. 6 : Step S 12 ).
- the flow rate changing portion compares the room temperature setting value SP obtained in Step S 11 to the room temperature setting value SP obtained the previous time, and if there is a difference, evaluates that there has been a change in the room temperature setting value SP (YES in FIG. 6 : Step S 13 ).
- the air flow rate changing portion 113 temporarily changes the required air flow rate, calculated by the air flow rate calculating portion 112 , higher or lower in accordance with the change in the room temperature setting value SP ( FIG. 6 : Step S 14 ).
- the room temperature setting value SP is increased, then the required air flow rate is reduced, but if the room temperature setting value SP is reduced, then the required air flow rate is increased.
- the room temperature setting value SP is decreased, then the required air flow rate is reduced, but if the room temperature setting value SP is reduced, then the required air flow rate is decreased.
- the flow rate calculating portion 112 calculates the required air flow rate in response to this change to be 30%.
- the degree of opening of the damper within the VAV unit 8 would be controlled to secure the required air flow rate of 30%, but in the present example, the air flow rate changing portion 113 will change the required air flow rate temporarily to, for example, 0%.
- the air flow rate changing portion 113 determines the amount of change of the required air flow rate from the amount of change in the room temperature setting value SP in accordance with a relationship that is set in advance.
- the air flow rate changing portion 113 changes the required air flow rate temporarily in this way. Note that the air flow rate changing portion 113 may return the required air flow rate setting value to the most recent value calculated by the air flow rate calculating portion 112 after a specific amount of time has elapsed since the change in the required air flow rate.
- the required air flow rate value notifying portion 114 provides notification of the required air flow rate to the air conditioning controlling device 12 ( FIG. 6 : Step S 15 ).
- the air conditioning controlling device 12 calculates a total required air flow rate value for the system as a whole from the required air flow rate values that are sent from the individual VAV control units 11 , calculates the rotational speed of the fan in accordance with the total required air flow rate value, and controls the air conditioner 1 so as to produce the calculated fan rotational speed.
- the controlling portion 115 controls the degree of opening of the damper (not shown) of the VAV unit 8 in order to secure the required air flow rate ( FIG. 6 : Step S 16 ).
- the VAV control unit 11 performs the processes in Step S 10 through S 16 , as described above, at regular intervals until the termination of air conditioning control (YES in FIG. 6 : Step S 17 ).
- a VAV control unit 11 is provided in each individual controlled area 9 , and the processes illustrated in FIG. 6 are performed by the individual VAV control units 11 .
- the comfort of the user can be increased through the ability to perform air conditioning control with prompt responsiveness to the requests by the users through performing changes to the VAV air flow rate through the air flow rate changing portions 113 in response to changes in the room temperature setting value SP, in addition to changing the VAV air flow rate in the same manner as is conventional through the air flow rate calculating portion 112 .
- the change in the required air flow rate may be limited only to the those cases wherein an operating device (not shown) that is disposed in a controlled area 9 has been operated to change a room temperature setting value SP, that is, to those cases wherein it can be assumed that a resident has changed a room temperature setting value SP.
- each VAV control unit 11 and air conditioning controlling device 12 in both examples may each be achieved through an individual computer, having a CPU, a memory device, and an interface with the outside, and through a program for controlling these hardware resources.
- the CPU of each device performs the processes explained in the examples, following a program stored in the memory device.
- the present invention is not limited to VAV, but rather can be applied to a variety of devices for controlling the temperature environment of controlled areas.
- these devices that are air-conditioners, FCU's (fan coil units), package air conditioners, heaters, and the like.
- the supply air temperature setting value and air flow rate were changed in accordance with a change in the room temperature setting value SP, there is no limitation thereto, but rather the degree of opening of a control valve (a cold water valve or hot water valve), or an operating quantity of a heater may be changed in accordance with a change in the room temperature setting value SP.
- the supply air temperature setting value, flow rate, degree of opening of a control valve, and the like may be changed simultaneously.
- the present invention can be applied to VAV control systems, and the like.
Abstract
An air conditioning controlling device controlling the volume of a thermal medium that is supplied to an air conditioner through the degree of opening of a control valve, has a room temperature setting value obtaining portion obtaining a room temperature setting value for a controlled area; a supply air temperature measured value obtaining portion obtaining a measured value for a temperature of supply air that is supplied to the controlled area from the air conditioner; a supply air temperature changing portion changing the supply air temperature setting value in accordance with a change in the room temperature setting value; an operating quantity calculating portion calculating an operating quantity based on a deviation between the supply air temperature measured value and the supply air temperature setting value; and an operating quantity outputting portion outputting an operating quantity to a control valve to control the degree of opening of the control valve.
Description
- The present application claims priority under 35 U.S.C. §119 to Japanese Patent Application No. 2010-255524, filed Nov. 16, 2010, which is incorporated herein by reference.
- The present invention relates to a controlling device and method in a VAV control system, or the like.
- Conventionally, in the air conditioning control, an operating quantity (for example, a valve opening degree, a VAV damper opening degree, or the like) is outputted through a PID calculation from a deviation of a current temperature so that a controlled area room temperature goes to a setting temperature. In this case, in VAV (variable air volume) control for changing an airflow rate of supply air into a room, even when there is a change in the room temperature setting value, some time is required until it is reflected into the supply air temperature of the air conditioner. Because of this, there have been proposals for VAV control systems equipped with a load reset controlling function for evaluating whether or not to change the supply air temperature based on request statuses sent from various VAV control units in various controlled areas (See Japanese Unexamined Patent Application Publication H8-28940 (“JP '940”) and Japanese Unexamined Patent Application Publication H8-42902 (“JP '902”)).
- However, even in the technologies disclosed in JP '940 and JP '902, there is the potential that after a user has changed the room temperature setting value, some time may be required until it is reflected in the air conditioner supply air temperature, preventing a prompt response. This problem will be explained in more detail below.
- In a VAV control system, the volume of a thermal medium (cold water or hot water) that is supplied to an air conditioner is controlled by an air conditioning controlling device. In the air conditioner, the supply air, blown out by a fan, is supplied through a supply air duct to the VAV units of each of the controlled areas, to pass through the VAV units, to be supplied to the controlled areas. A VAV control unit is provided for each controlled area.
- The VAV control unit calculates the required air flow rate for the controlled area based on the deviation between the room temperature measured value PV and the room temperature setting value SP of the controlled area, and controls the degree of opening of the damper of the VAV unit. The air conditioning controlling device calculates the total required air flow rate for the system as a whole from the required air flow rates sent from the VAV control units, calculates the speed of rotation of the fan from the total required air flow rate, and controls the air conditioner to achieve the calculated speed of rotation of the fan.
- Additionally, the VAV control unit sends a cooling increased capacity request status when, during cooling, the room temperature measured value PV does not fall to become the room temperature setting value SP, and sends a heating increased capacity request status when, during heating, the room temperature measured value PV does not increase to the room temperature setting value SP. The air conditioning controlling device changes the air conditioner supply air temperature in accordance with the cooling increased capacity request status or heating increased capacity request status sent from the VAV control unit. Increasing the supply air temperature capacity in this way is known as “load reset control.”
- Here when a user has changed the room temperature setting value SP, if, for example, the room temperature setting value SP has been reduced at the time of cooling, this produces a deviation between the room temperature setting value SP and the room temperature measured value PV, and thus the VAV control unit changes the requested airflow rates and controls the degree of opening of the VAV unit damper to cause the room temperature measured value PV to approach the room temperature setting value SP. However, if the maximum air flow rate has already been reached, then it is not possible to reduce the room temperature by changing the air flow rate. The VAV control unit sends a cooling increased capacity request status if, at the time of cooling, the room temperature measured value PV does not fall to become the room temperature setting value SP, but some time is required until the cooling increased capacity request status is sent, and thus some time will be required until the room temperature falls. In this type of load reset control, it may not be possible to respond promptly to a request from a user desiring an improvement in the temperature environment. In order to achieve a prompt response, it has been necessary to turn OFF the load reset control and to reduce the supply air temperature manually.
- Additionally, heretofore the air-conditioning control has been achieved through PID control that tracks to the setting values. However, if, for example, the room temperature setting value has been changed from 26° C. to 25° C., then the request from the resident is not that “I want the temperature within the room to be 25° C.,” but rather often means that “I'm a little hot, so would like to be cooler.” In the conventional air-conditioning control, control stability is emphasized when determining the control outputs of the air-conditioning equipment so as to not overshoot, in order to go to 25° C.; however, there have been complaints that if the result of the control output calculation is a state wherein change is slow, then the resident who has changed the setting will be unaware of the change in temperature.
- The present invention is to resolve the problem areas set forth above, and the object thereof is to provide a controlling device and method able to achieve prompt response to a request from a user desiring to improve the environment.
- The controlling device includes setting value obtaining means for obtaining a setting value for control; and changing means for changing temporarily a control output quantity in a direction that will promote tracking to a setting value through feed-forward control in accordance with a change in the setting value.
- Moreover, in one example configuration of a controlling device, the setting value obtaining means obtain a controlled area room temperature setting value; and the changing means change temporarily a control output quantity, for a device for controlling the temperature environment of a controlled area, in accordance with a change in the room temperature setting value.
- Moreover, in another example configuration of a controlling device, the device for controlling the temperature environment of the controlled area is an air conditioner and/or a heater; and the control output quantity is a supply air temperature setting value in an air conditioner, a flow rate to the controlled area, a degree of opening of a control valve for controlling a quantity of a thermal medium that is supplied to the air conditioner, and/or a heater operating quantity.
- Moreover, in a further example configuration of a controlling device, the changing means change the control output quantity only when a resident of the controlled area has changed the room temperature setting value.
- Moreover, a controlling method includes a a setting value obtaining step for obtaining a setting value for control; and a changing step for changing temporarily a control output quantity in a direction that will promote tracking to a setting value through feed-forward control in accordance with a change in the setting value.
- The present examples enable an improvement in the comfort for the user through enabling responsive control based on a user request, through performing control that increases or decreases the control output quantity in the direction that will promote tracking to a setting value (feed-forward control) after detecting the action of a change in the setting value. The result is that the present invention is able to reduce extremely complaints from users that, for example, they are too hot or too cold. Moreover, the application of the present invention to a VAV control system enables increases in the decentralization of air conditioning control, in operability, and in comfort.
-
FIG. 1 is a block diagram illustrating a structure of a VAV controlling system according to an example. -
FIG. 2 is a block diagram illustrating a structure of an air conditioning controlling device of a VAV controlling system according to the example. -
FIG. 3 is a flowchart illustrating the operation of the air conditioning controlling device of a VAV controlling system according to the example. -
FIG. 4 is a diagram illustrating an example of the relationship between an amount of change in the room temperature setting value and an amount of change in a supply air temperature setting value. -
FIG. 5 is a block diagram illustrating a structure of a VAV control unit of a VAV controlling system according to another example. -
FIG. 6 is a flowchart illustrating the operation of a VAV control unit of a VAV controlling system according to the other example. - Forms for carrying out the present invention are explained below in reference to the figures.
FIG. 1 is a block diagram illustrating a structure of a VAV controlling system according to a first form of embodiment according to the present invention. - The VAV control system of the present example includes an
air conditioner 1; acold water valve 2 for controlling the quantity of cold water to theair conditioner 1; ahot water valve 3 for controlling the quantity of hot water to theair conditioner 1; ansupply air duct 7 for providing supply air from theair conditioner 1 to the controlledarea 9; aVAV unit 8 for controlling, for each controlled area, the quantity of supply air supplied to the controlledarea 9; aVAV control unit 11 that is a controlling device for controlling theVAV unit 8; an airconditioning controlling device 12 for controlling thecold water valve 2 and thehot water valve 3; atemperature sensor 13 for measuring the room temperature of the controlledarea 9; areturn duct 14; an exhaustair adjusting damper 15 for adjusting the volume of air that is exhausted to the outside; a returnair adjusting damper 16 for adjusting the volume of return air that is returned to theair conditioner 1; an outsideair adjusting damper 17 for adjusting the volume of outside air drawn in to theair conditioner 1; atemperature sensor 18 for measuring the supply air temperature; and atemperature sensor 19 for measuring the return air temperature. - The
air conditioner 1 is structured from acooling coil 4, aheating coil 5, and a fan 6. AVAV unit 8 and aVAV control unit 11 are provided for each controlled area. A damper, not shown, is provided within theVAV unit 8, so as to be able to adjust the volume of supply air that passes through theVAV unit 8. InFIG. 1 , 10 is a supply air blower vent, and 20 is an outside air intake vent. - Within the
air conditioner 1, the speed of rotation of the fan 6 and the degrees of opening of thecold water valve 2 and thehot water valve 3 are controlled by the airconditioning controlling device 12. During a cooling operation, the volume of cold water supplied to thecooling coil 4 of theair conditioner 1 is controlled by thecold water valve 2. On the other hand, during a heating operation, the volume of hot water supplied to theheating coil 5 of theair conditioner 1 is controlled by thehot water valve 3. The air that is cooled by thecooling coil 4 or the air that is heated by theheating coil 5 is blown out by the fan 6. The air that is blown out by the fan 6 (that is, the supply air) is supplied through thesupply air duct 7 to theVAV unit 8 of each of the controlledareas 9, so as to be supplied to each of the controlledareas 9 through theVAV units 8. - The
VAV control unit 11 calculates a required air flow rate for the controlledarea 9 based on the deviation between the room temperature measured value PV, measured by thetemperature sensor 13 in the controlledarea 9, and the room temperature setting value SP, and sends the required air flow rate value to the airconditioning controlling device 12, and also controls the opening of the damper (not shown) within theVAV unit 8 so as to ensure this required air flow rate. - The air
conditioning controlling device 12 calculates a total required air flow rate value for the system as a whole from the required air flow rate values that are sent from the individualVAV control units 11, calculates the rotational speed of the fan in accordance with the total required air flow rate value, and controls theair conditioner 1 so as to produce the calculated fan rotational speed. - Moreover, the
VAV control unit 11 sends a cooling increased capacity request status when the room temperature measured value PV at the time of cooling does not fall to become the room temperature setting value SP, and sends a heating increased capacity request status when the room temperature measured value PV, at the time of heating, does not rise to reach the temperature setting value SP. The airconditioning controlling device 12 changes the supply air temperature in accordance with the cooling increased capacity request status or the heating increased capacity request status that is sent from the VAV control unit. - The supply air that passes through the
VAV unit 8 to be blown out from theblower vent 10 into the controlledarea 9, after contributing to the cooling control in the controlledarea 9, passes through theexhaust duct 14 to be exhausted through the exhaustair adjusting damper 15, but a portion thereof is returned to theair conditioner 1 as return air through the returnair adjusting damper 16. Following this, outside air is drawn in, through the outsideair adjusting damper 17, at a specific proportion relative to the return air that is returned to theair conditioner 1. The respective degrees of opening of the exhaustair adjusting damper 15, the returnair adjusting damper 16, and the outsideair adjusting damper 17 are controlled by the airconditioning controlling device 12. - The air
conditioning controlling device 12, at the time of a cooling operation by theair conditioner 1, sets the degree of opening of thehot water valve 3 to 0% and controls the degree of opening of thecooling water valve 2 so that the supply air temperature measured value, measured by thetemperature sensor 18, will match the supply air temperature setting value. Moreover, the airconditioning controlling device 12, at the time of a heating operation of theair conditioner 1, sets the degree of opening of thecooling water valve 2 to 0%, and controls the degree of opening of theheating water valve 3 so that the supply air temperature measured value, measured by thetemperature sensor 18, will match the supply air temperature setting value. - The operations described above are the same as in the conventional VAV control systems disclosed in JP '940 and JP '902.
- The distinctive characteristics of the present examples are explained next.
FIG. 2 is a block diagram illustrating one configuration of an airconditioning controlling device 12 according to the present form of embodiment.FIG. 3 is a flowchart illustrating the operation of an airconditioning controlling device 12 according to the present example. - The air
conditioning controlling device 12 comprises: a room temperature measured value for obtaining the room temperature measured values PV for each of the controlledareas 9, through each of theVAV control units 11; a room temperature settingvalue obtaining portion 121 for obtaining the room temperature setting values SP for each of the controlledareas 9 through each of theVAV control units 11; a supply air temperature measuredvalue obtaining portion 122 for obtaining the supply air temperature measured value measured by thetemperature sensor 18; an operatingquantity calculating portion 123 for calculating operating quantities that represent the degrees of opening of thecold water valve 2 and thehot water valve 3; a supply airtemperature changing portion 124 for changing temporarily the supply air temperature setting value in accordance with a change in the room temperature setting value SP; and an operatingquantity outputting portion 125 for outputting the operating quantities to thecold water valve 2 and thehot water valve 3. - The room temperature measured
value obtaining portion 120 obtains the room temperature measured values PV of each of the controlledareas 9 through each of the VAV control units 11 (FIG. 3 : Step S1). - The room temperature setting
value obtaining portion 121 obtains the room temperature setting values SP of each of the controlledareas 9 through each of the VAV control units 11 (FIG. 3 : Step S2). - The supply air temperature measured
value obtaining portion 122 obtains the supply air temperature measured value measured by the temperature sensor 18 (FIG. 3 : Step S3). - The supply
air changing portion 124 compares the room temperature setting value SP, obtained in Step S2, to the previous value for the room temperature setting value SP, and if there is a difference, evaluates that there has been a change in the room temperature setting value SP (YES inFIG. 3 : Step S4). The supplyair changing portion 124 performs the evaluation in Step S4 for the room temperature setting value SP for each individual controlledarea 9. - Moreover, the supply air
temperature changing portion 124, if there is a change in even one of the room temperature setting values SP, changes the supply air temperature setting value temporarily in the increasing or decreasing direction depending on the change in the room temperature setting value SP (FIG. 3 : Step S5). If the room temperature setting value SP has been increased, then the supply air temperature setting value is increased, and if the room temperature setting value SP has been decreased, then the supply air temperature setting value is decreased. - At this time, the supply air
temperature changing portion 124 determines the amount of change in the supply air temperature setting value from the amount of change in the room temperature setting value SP in accordance with a relationship that has been established in advance. One example of a relationship between the amount of change in the room temperature setting value SP had the amount of change in the supply air temperature setting value is illustrated inFIG. 4 . If, for example, the change in the room temperature setting value SP is an increase of +2° C. relative to the previous value, then the supply airtemperature changing portion 124 sets the amount of change, relative to the current value for the supply air temperature setting value, to be +2° C. Moreover, if, for example, the change in the room temperature setting value SP is a reduction of −2° C. relative to the previous value, then the supply airtemperature changing portion 124 sets the amount of change, relative to the current value for the supply air temperature setting value, to be −2° C. In this way, the supply airtemperature changing portion 124 changes the supply air temperature setting value temporarily. If multiple room temperature setting values SP of multiple controlledareas 9 are changed at about the same time, then the amount of change in the supply air temperature setting value may be determined in accordance with the maximum amount of change of the amounts of change in the multiple room temperature setting values SP. Note that the supply airtemperature changing portion 124 may return the supply air temperature setting value to the value from prior to the change when a specific amount of time has elapsed after the change in the supply air temperature setting value. - Following this, the operating
quantity calculating portion 123 calculates an operating quantity in accordance with a specific control calculating algorithm so that the supply air temperature measured value obtained in Step S3 will match the supply air temperature setting value (FIG. 3 : Step S6). The control calculating algorithm is, for example, a PID. - Additionally, the operating
quantity outputting portion 125 outputs, to thecold water valve 2 and thehot water valve 3, the operating quantities calculated by the operating quantity calculating portion 123 (FIG. 3 : Step S7). The degrees of opening of thecold water valve 2 and thehot water valve 3 are controlled in this way, to control the volume of the thermal medium (cold water or hot water) that is supplied to theair conditioner 1. Note that, as described above, when theair conditioner 1 is performing a cooling operation, the degree of opening of thehot water valve 3 is constantly 0%, and when theair conditioner 1 is performing a heating operation, the degree of opening of thecold water valve 2 is constantly set to 0%. - The air
conditioning controlling device 12 performs the processes in Step S1 through S7, as described above, at regular intervals until the air conditioning control is terminated (YES inFIG. 3 : Step S8). If there is no change in a room temperature setting value SP, then normal load reset control is performed. - An operation of the room temperature setting value SP indicates a clear intention by a user regarding the temperature environment, and is different from a situation wherein there has merely been an increase or decrease in the load in the room that increases the deviation between the room temperature setting value SP and the room temperature measured value PV, and so should be responded to promptly.
- In the present example, the action that is the change in the room temperature setting value is detected, and the supply air temperature setting value of the
air conditioner 1 is controlled (in feed-forward control) in response thereto, to enable air conditioning control that is responsive to the request by the user, enabling improved user comfort. - Note that while in the present example the supply air temperature setting value is changed unconditionally when there is a change in the room temperature setting value, instead the change in the supply air temperature setting value may limited to only when the supply air flow rate to the controlled
area 9 for which the room temperature setting value SP has changed is the maximum air flow rate. That is, if the supply air flow rate is not the maximum air flow rate, so that there is some margin, the response will be through load reset control. - Additionally, in the present example, the user that has changed the room temperature setting value SP is not identified. As users who can change the room temperature setting values SP there are residents of the controlled
areas 9 and there are building administrators. Given this, the change in the supply air temperature setting value may be limited to only when the room temperature setting value SP has been changed through an operation of an operating device (not shown) that is provided in a controlledarea 9, that is, only if the change in the room temperature setting value SP can be assumed to be made by a resident. That is, it is possible to respond promptly based on a request from a room resident being a request that requires a prompt response. - Another example is explained next. While a case of a VAV control system of a method wherein the supply air temperature and air flow rate are controlled was explained in the first form of embodiment, VAV control systems include also systems of methods wherein the air flow rate is controlled with a constant supply air temperature. The this example explain a case wherein the present examples are applied to such a system. The structure of the VAV control system in the present example is identical to that in the previous example, and thus the explanation uses the the same references as are in
FIG. 1 . However, in the present example the supply air temperature setting value will be constant, as described above. -
FIG. 5 is a block diagram illustrating one configuration of aVAV control unit 11 according to the present example.FIG. 6 is a flowchart illustrating the operation of theVAV control unit 11 according to the present example. - The
VAV control unit 11 includes a room temperature measuredvalue obtaining portion 110 for obtaining a room temperature setting value PV, measured by thetemperature sensor 13 of the corresponding controlledarea 9; a room temperature settingvalue obtaining portion 111 for obtaining the room temperature setting value SP of the corresponding controlledarea 9; an air flowrate calculating portion 112 for calculating the required air flow rate for the controlledarea 9 based on the deviation between the room temperatures measured value PV and the room temperature setting value SP; a flowrate changing portion 113 for changing temporarily the required air flow rate depending on a change in the room temperature setting value SP; a required air flow ratevalue notifying portion 114 for providing notification to the airconditioning controlling device 12 of the required air flow rate value for the controlledarea 9; and a controllingportion 115 for controlling the degree of opening of the damper within theVAV unit 8 so as to secure the required air flow rate. - The room temperature measured
value obtaining portion 110 obtains the room temperature measured value PV of the corresponding controlled area 9 (FIG. 6 : Step S10). - The room temperature setting
value obtaining portion 111 obtains the room temperature setting value SP for the corresponding controlled area 9 (FIG. 6 : Step S11). - The air flow
rate calculating portion 112 calculates the required air flow rate for the corresponding controlledarea 9 based on the deviation between the room temperature measured value PV, obtained by the room temperature measuredvalue obtaining portion 110, and the room temperature setting value SP, obtained by the room temperature setting value obtaining portion 111 (FIG. 6 : Step S12). - The flow rate changing portion compares the room temperature setting value SP obtained in Step S11 to the room temperature setting value SP obtained the previous time, and if there is a difference, evaluates that there has been a change in the room temperature setting value SP (YES in
FIG. 6 : Step S13). - Additionally, when there has been a change in the room temperature setting value SP, the air flow
rate changing portion 113 temporarily changes the required air flow rate, calculated by the air flowrate calculating portion 112, higher or lower in accordance with the change in the room temperature setting value SP (FIG. 6 : Step S14). At the time of a cooling operation, if the room temperature setting value SP is increased, then the required air flow rate is reduced, but if the room temperature setting value SP is reduced, then the required air flow rate is increased. Moreover, at the time of a heating operation, if the room temperature setting value SP is decreased, then the required air flow rate is reduced, but if the room temperature setting value SP is reduced, then the required air flow rate is decreased. - For example, if during a cooling operation with an air flow rate of 50% the room temperature setting value SP is changed from 25° C. to 26° C. by a resident of the controlled
area 9, then the flowrate calculating portion 112 calculates the required air flow rate in response to this change to be 30%. In a conventional VAV control system, the degree of opening of the damper within theVAV unit 8 would be controlled to secure the required air flow rate of 30%, but in the present example, the air flowrate changing portion 113 will change the required air flow rate temporarily to, for example, 0%. The air flowrate changing portion 113 determines the amount of change of the required air flow rate from the amount of change in the room temperature setting value SP in accordance with a relationship that is set in advance. The air flowrate changing portion 113 changes the required air flow rate temporarily in this way. Note that the air flowrate changing portion 113 may return the required air flow rate setting value to the most recent value calculated by the air flowrate calculating portion 112 after a specific amount of time has elapsed since the change in the required air flow rate. - The required air flow rate
value notifying portion 114 provides notification of the required air flow rate to the air conditioning controlling device 12 (FIG. 6 : Step S15). As explained above, the airconditioning controlling device 12 calculates a total required air flow rate value for the system as a whole from the required air flow rate values that are sent from the individualVAV control units 11, calculates the rotational speed of the fan in accordance with the total required air flow rate value, and controls theair conditioner 1 so as to produce the calculated fan rotational speed. - The controlling
portion 115 controls the degree of opening of the damper (not shown) of theVAV unit 8 in order to secure the required air flow rate (FIG. 6 : Step S16). - The
VAV control unit 11 performs the processes in Step S10 through S16, as described above, at regular intervals until the termination of air conditioning control (YES inFIG. 6 : Step S17). AVAV control unit 11 is provided in each individual controlledarea 9, and the processes illustrated inFIG. 6 are performed by the individualVAV control units 11. - In the present example, the comfort of the user can be increased through the ability to perform air conditioning control with prompt responsiveness to the requests by the users through performing changes to the VAV air flow rate through the air flow
rate changing portions 113 in response to changes in the room temperature setting value SP, in addition to changing the VAV air flow rate in the same manner as is conventional through the air flowrate calculating portion 112. - Note that, in the same manner as in the above example, the change in the required air flow rate may be limited only to the those cases wherein an operating device (not shown) that is disposed in a controlled
area 9 has been operated to change a room temperature setting value SP, that is, to those cases wherein it can be assumed that a resident has changed a room temperature setting value SP. - Note that each
VAV control unit 11 and airconditioning controlling device 12 in both examples may each be achieved through an individual computer, having a CPU, a memory device, and an interface with the outside, and through a program for controlling these hardware resources. The CPU of each device performs the processes explained in the examples, following a program stored in the memory device. - Moreover, while in the examples the explanation was for a VAV control system, the present invention is not limited to VAV, but rather can be applied to a variety of devices for controlling the temperature environment of controlled areas. As these devices that are air-conditioners, FCU's (fan coil units), package air conditioners, heaters, and the like. Moreover, while in the first and second forms of embodiment, the supply air temperature setting value and air flow rate were changed in accordance with a change in the room temperature setting value SP, there is no limitation thereto, but rather the degree of opening of a control valve (a cold water valve or hot water valve), or an operating quantity of a heater may be changed in accordance with a change in the room temperature setting value SP. Moreover, the supply air temperature setting value, flow rate, degree of opening of a control valve, and the like, may be changed simultaneously.
- The present invention can be applied to VAV control systems, and the like.
Claims (8)
1. A controlling device comprising:
a setting value obtaining device obtaining a setting value for control; and
a changing device changing temporarily a control output quantity in a direction that promotes tracking to a setting value through feed-forward control in accordance with a change in the setting value.
2. The controlling device as set forth in claim 1 , wherein:
the setting value obtaining device obtains a controlled area room temperature setting value; and
the changing device changes temporarily a control output quantity for a controller controlling the temperature environment of a controlled area, in accordance with a change in the room temperature setting value.
3. The controlling device as set forth in claim 2 , wherein:
the controller is at least one of an air conditioner or a heater; and
the control output quantity is a supply air temperature setting value in an air conditioner, a flow rate to the controlled area, a degree of opening of a control valve for controlling a quantity of a thermal medium that is supplied to at least one of an air conditioner, or a heater operating quantity.
4. The controlling device as set forth in claim 1 , wherein:
the changing device changes the control output quantity only when a resident of the controlled area has changed the room temperature setting value.
5. A controlling method comprising:
a setting value obtaining step obtaining a setting value for control; and
a changing step changing, temporarily, a control output quantity in a direction that promotes tracking to a setting value through feed-forward control in accordance with a change in the setting value.
6. The controlling method as set forth in claim 5 , wherein:
the setting value obtaining step obtains a controlled area room temperature setting value; and
the changing step changes temporarily a control output quantity, for a controller controlling the temperature environment of a controlled area, in accordance with a change in the room temperature setting value.
7. The controlling method as set forth in claim 6 , wherein:
the controller is at least one of an air conditioner or a heater; and
the control output quantity is a supply air temperature setting value in an air conditioner, a flow rate to the controlled area, a degree of opening of a control valve for controlling a quantity of a thermal medium that is supplied to at least one of an air conditioner, or a heater operating quantity.
8. The controlling method as set forth in claim 5 , wherein:
the changing step changes the control output quantity only when a resident of the controlled area has changed the room temperature setting value.
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JP2010-255524 | 2010-11-16 | ||
JP2010255524A JP5629189B2 (en) | 2010-11-16 | 2010-11-16 | Control apparatus and method |
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Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013094750A (en) * | 2011-11-02 | 2013-05-20 | Azbil Corp | Desiccant air-conditioning system and its operation method |
US20140358299A1 (en) * | 2013-05-29 | 2014-12-04 | Azbil Corporation | Controlling device and controlling method |
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US20160320078A1 (en) * | 2015-04-28 | 2016-11-03 | Solarlogic, Llc | Controller and method for multi-zone air heating and cooling system with motorized vents |
EP3073204A4 (en) * | 2013-11-21 | 2017-02-22 | ZTE Corporation | Method, and device for controlling the output of the air volume and memory medium |
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US11137164B2 (en) | 2017-05-15 | 2021-10-05 | Carrier Corporation | Control systems and methods for heat pump systems |
EP4273457A1 (en) * | 2022-05-05 | 2023-11-08 | Viessmann Climate Solutions SE | Method, system and computer program product for controlling a heat and / or cold generator |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6031349B2 (en) * | 2012-12-21 | 2016-11-24 | アズビル株式会社 | Air conditioning control apparatus and method |
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CN109812950B (en) * | 2019-02-22 | 2021-04-09 | 广东欧科空调制冷有限公司 | Air conditioner evaporation temperature control method and device and air conditioner |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5148977A (en) * | 1990-06-21 | 1992-09-22 | Hitachi, Ltd. | Control system for air-conductioner |
JPH0842909A (en) * | 1994-07-29 | 1996-02-16 | Showa Tekko Kk | Air conditioning system |
US5769315A (en) * | 1997-07-08 | 1998-06-23 | Johnson Service Co. | Pressure dependent variable air volume control strategy |
US6095426A (en) * | 1997-11-07 | 2000-08-01 | Siemens Building Technologies | Room temperature control apparatus having feedforward and feedback control and method |
US20080161976A1 (en) * | 2005-05-03 | 2008-07-03 | Daniel Stanimirovic | Fully articulated and comprehensive air and fluid distribution, metering, and control method and apparatus for primary movers, heat exchangers, and terminal flow devices |
US20090005912A1 (en) * | 2007-03-26 | 2009-01-01 | Siemens Corporation | Apparatus and Method for the Control of the Indoor Thermal Environment Having Feed Forward and Feedback Control Using Adaptive Reference Models |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58133804U (en) * | 1982-02-26 | 1983-09-09 | 横河電機株式会社 | automatic control device |
JPS60159553A (en) * | 1984-01-30 | 1985-08-21 | Matsushita Electric Ind Co Ltd | Control device for hot-water supplier |
JP3300964B2 (en) * | 1994-07-13 | 2002-07-08 | 株式会社山武 | VAV control system |
JP3141315B2 (en) * | 1994-07-28 | 2001-03-05 | 株式会社山武 | VAV control system |
JPH08100959A (en) * | 1994-09-30 | 1996-04-16 | Toshiba Corp | Air conditioner |
US5632154A (en) * | 1995-02-28 | 1997-05-27 | American Standard Inc. | Feed forward control of expansion valve |
JP2000120139A (en) * | 1998-10-16 | 2000-04-25 | Toto Ltd | Private part cleaning device |
JP2000129759A (en) * | 1998-10-28 | 2000-05-09 | Toto Ltd | Private part washing device |
JP2005037106A (en) * | 2003-07-15 | 2005-02-10 | Kyohei Yamaguchi | Method for controlling temperature and humidity based on variable air volume |
JP2005055028A (en) * | 2003-08-01 | 2005-03-03 | Hitachi Ltd | Air conditioning system |
US7246005B2 (en) * | 2005-06-07 | 2007-07-17 | Arvin Technologies, Inc. | Method and apparatus for controlling a component by feed-forward closed-loop controller state modification |
JP5161483B2 (en) * | 2007-05-16 | 2013-03-13 | アズビル株式会社 | Setting value management method and apparatus |
JP2009097772A (en) * | 2007-10-16 | 2009-05-07 | Denso Corp | Refrigerating cycle device |
JP4555856B2 (en) * | 2007-12-10 | 2010-10-06 | 日本スピンドル製造株式会社 | Temperature control device |
-
2010
- 2010-11-16 JP JP2010255524A patent/JP5629189B2/en active Active
-
2011
- 2011-11-03 CN CN201110353936.9A patent/CN102466303B/en not_active Expired - Fee Related
- 2011-11-15 US US13/296,586 patent/US20120118986A1/en not_active Abandoned
- 2011-11-15 KR KR1020110118685A patent/KR101317614B1/en active IP Right Grant
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5148977A (en) * | 1990-06-21 | 1992-09-22 | Hitachi, Ltd. | Control system for air-conductioner |
JPH0842909A (en) * | 1994-07-29 | 1996-02-16 | Showa Tekko Kk | Air conditioning system |
US5769315A (en) * | 1997-07-08 | 1998-06-23 | Johnson Service Co. | Pressure dependent variable air volume control strategy |
US6095426A (en) * | 1997-11-07 | 2000-08-01 | Siemens Building Technologies | Room temperature control apparatus having feedforward and feedback control and method |
US20080161976A1 (en) * | 2005-05-03 | 2008-07-03 | Daniel Stanimirovic | Fully articulated and comprehensive air and fluid distribution, metering, and control method and apparatus for primary movers, heat exchangers, and terminal flow devices |
US20090005912A1 (en) * | 2007-03-26 | 2009-01-01 | Siemens Corporation | Apparatus and Method for the Control of the Indoor Thermal Environment Having Feed Forward and Feedback Control Using Adaptive Reference Models |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013094750A (en) * | 2011-11-02 | 2013-05-20 | Azbil Corp | Desiccant air-conditioning system and its operation method |
US20140358299A1 (en) * | 2013-05-29 | 2014-12-04 | Azbil Corporation | Controlling device and controlling method |
US9709293B2 (en) * | 2013-05-29 | 2017-07-18 | Azbil Corporation | Controlling device and controlling method |
EP3073204A4 (en) * | 2013-11-21 | 2017-02-22 | ZTE Corporation | Method, and device for controlling the output of the air volume and memory medium |
US10274970B2 (en) | 2013-11-21 | 2019-04-30 | Zte Corporation | Method, and device for controlling the output of the air volume and memory medium |
WO2016043808A1 (en) | 2014-09-17 | 2016-03-24 | Aquanano Llc | High-capacity anion exchange material |
US20160320078A1 (en) * | 2015-04-28 | 2016-11-03 | Solarlogic, Llc | Controller and method for multi-zone air heating and cooling system with motorized vents |
US11137164B2 (en) | 2017-05-15 | 2021-10-05 | Carrier Corporation | Control systems and methods for heat pump systems |
CN111623466A (en) * | 2020-05-08 | 2020-09-04 | 东南大学 | Method for determining air supply volume of air conditioner of large-space office building based on personnel distribution |
EP4273457A1 (en) * | 2022-05-05 | 2023-11-08 | Viessmann Climate Solutions SE | Method, system and computer program product for controlling a heat and / or cold generator |
Also Published As
Publication number | Publication date |
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CN102466303B (en) | 2015-04-22 |
KR101317614B1 (en) | 2013-10-10 |
KR20120052874A (en) | 2012-05-24 |
JP5629189B2 (en) | 2014-11-19 |
JP2012107787A (en) | 2012-06-07 |
CN102466303A (en) | 2012-05-23 |
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