JPH1019337A - Operation control device for air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make an air conditioner itself to recognize an indoor thermal performance, adjust an operating capacity in response to the recognized performance and obtain an operating capacity adapted for a state of indoor area where the air conditioner is installed. SOLUTION: After installation of an air conditioner 1, the air conditioner 1 is operated, and a heat-escaping characteristic value indicating a degree of easiness for heat to escape from an indoor side to an outdoor side is calculated by utilization of the quantity of heat of conditioned air QRA. During an air conditioning operation, the heat-escaping characteristic value is utilized to calculate a required quantity of indoor heat. A judgement is made if the quantity of heat of conditioned air QRA during air conditioning operation is equal with the required quantity of the indoor heat R and then an operating of the air conditioner is changed in such a way that both of these values become equal to each other.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operation control device for an air conditioner for supplying air-conditioned air to a room and performing air conditioning in the room, and more particularly to an improvement in an operation of adjusting an air-conditioning capacity.

[0002]

2. Description of the Related Art Conventionally, for example, Japanese Patent Application Laid-Open No. H8-10095
In the air conditioner disclosed in Japanese Patent Application Publication No. 6 (1994), warm air is supplied to a room when a heating request is made, and cold air is supplied to a room when a cooling request is made. The temperature and air volume of the blown air are determined by the difference between the room temperature and the room setting temperature set by a remote controller or the like. That is, as the difference between the room temperature and the set temperature is larger, the operation capability of the air conditioner is increased so that the room temperature is quickly brought closer to the set temperature.

[0003]

By the way, this type of air conditioner is installed in various rooms where the thermal characteristics of the room in which it is installed are not uniform and the structure of the building such as wall material and thickness is different. Will be. For example, a wooden house and a reinforced concrete house have significantly different thermal characteristics in the room.

[0004] However, the same air conditioner has been installed regardless of the thermal characteristics of the room, and the operating capacity of the air conditioner is set only by the difference between the room temperature and the set temperature. I was supposed to.

[0005] For this reason, for example, when an attempt is made to heat a room with low heat insulation (for example, a wooden house), the time required for the room temperature to reach the set temperature becomes longer (see FIG. 5 showing a change state of the room temperature). If an attempt is made to heat a room with high heat insulation (for example, a reinforced concrete house), a so-called overshoot (see the dashed line in FIG. 5) occurs in which the room temperature rises rapidly and greatly exceeds the set temperature. It may not be possible to maintain good indoor comfort.

[0006] When installing the air conditioner, it is conceivable to adjust the capacity of the air conditioner according to the thermal performance of the room in which the air conditioner is installed. In other words, when installed in a room with low heat insulation, a capacity larger than the reference operation capacity obtained by the difference between the room temperature and the set temperature is obtained, and conversely, when installed in a room with high heat insulation, Then, the air conditioner is adjusted so that the capacity becomes smaller than the reference operation capacity.

However, in this case, it is necessary for an operator to perform the work of adjusting the performance of the air conditioner at the time of installation, which is not only complicated, but also makes it difficult to accurately recognize the thermal performance of the room. There are issues.

[0008] The present invention has been made in view of this point, and an object of the present invention is to provide an air conditioner that recognizes the thermal performance of a room, adjusts the operating capacity based on the performance, and installs the room. It is to obtain the driving ability suitable for.

[0009]

In order to achieve the above object, the present invention recognizes the performance of an air conditioner while operating the air conditioner, and based on the recognized performance, determines the thermal performance of a room in advance. Measure it. Then, at the time of indoor air-conditioning operation, the required heat amount based on the thermal performance of the room is calculated, and the air conditioner is operated with an operation capacity suitable for the required heat amount.

More specifically, as shown in FIG. 1, the means adopted by the first aspect of the present invention is an air conditioner (1) for supplying conditioned air to a room (R) to air-condition the room (R). ) And indoor (R)
During the recognition operation for recognizing the thermal performance of the air conditioner and during the air conditioning operation for cooling or heating the room (R), the air conditioner (1)
Operating means (11) for operating the. Also, when the air conditioner (1) is operated by the operating means (11), the calorie (QRA) of the conditioned air supplied to the room (R) by the air conditioner (1).
Is provided. At the time of the recognition operation, the output of the capacity calculation means (12) is received, and a heat outflow characteristic value (e.g., a heat outflow characteristic value indicating the ease with which heat flows out of the room (R) to the outside of the room using the heat quantity (QRA) of the conditioned air) A characteristic value calculating means (13) for calculating K · A) is provided. Further, during the air-conditioning operation, the output of the characteristic value calculating means (13) is received, and the calorie calculating means (14) calculates the required heat amount (Qr) of the room (R) using the heat outflow characteristic value (KA). ) And the output of the capacity calculating means (12) and the calorific value calculating means (14) during this air-conditioning operation,
(R) is supplied to the room (R)
Determination means (15) for determining whether or not the required heat quantity (Qr) is equal to the required heat quantity (Qr). Similarly, during the air-conditioning operation, the output of the determination means (15) and the heat quantity of the conditioned air supplied to the room (R) (QRA)
Does not match the required heat (Qr) of the room (R),
Air conditioner so that these two (QRA, QR) match
A capacity changing means (16) for changing the driving capacity of (1) is provided.

With this configuration, first, during the recognition driving,
While the air conditioner (1) is operated by the operating means (11), the air conditioner (1) is moved indoors by the capacity calculating means (12).
Calculate the heat quantity (QRA) of the conditioned air supplied to (R). Then, the characteristic value calculating means (13) calculates the calorific value (QRA) of the conditioned air.
Is used to calculate a heat outflow characteristic value (K · A) indicating the ease with which heat can flow out of the room (R) to the outside. Thereby, the indoor thermal performance is recognized. The air-conditioning operation is performed with the indoor thermal performance recognized in this manner. In this air-conditioning operation, first, the calorie calculating means (14) sets the heat outflow characteristic value (K ·
The required heat quantity (Qr) of the room (R) is calculated by using A). Thereafter, the judging means (15) determines that the amount of heat (QRA) of the conditioned air supplied to the room (R) is equal to the required amount of heat (Qr) of the room (R).
It is determined whether or not they match. If the two (QRA, QR) do not match, the capability changing means (1
6) changes the operation capacity of the air conditioner (1) and controls the heat quantity (QRA) of the conditioned air to match the required heat quantity (Qr) of the room (R). Performance and required heat (Q
The driving ability suitable for r) will be obtained.

According to a second aspect of the present invention, in the operation control device for an air conditioner according to the first aspect, the capacity calculating means is provided.
(12) calculates the heat quantity (QRA) of the conditioned air supplied to the room (R) by the following equation: QRA = Vi · (Tf−Ts) (where Vi is the blown airflow rate of the conditioned air, Tf is the blowout temperature of the conditioned air, Ts is calculated by the indoor air suction temperature), and the characteristic value calculating means (13) calculates the heat outflow characteristic value (KA) by the following equation: KA = QRA / (Tin-Tout) (where K is the wall surface) , A is the area of the wall, etc., T
in is the room temperature and Tout is the outside air temperature), and the calorie calculating means (14) calculates the required heat amount (Qr) of the room (R) by the following equation: Qr = KA · (Tset−Tout) (where Tset Is calculated based on the indoor set temperature).

With this configuration, the operation of calculating the calorific value (QRA) of the conditioned air by the capacity calculating means (12) and the characteristic value calculating means (1
3) Calculation operation of heat outflow characteristic value (KA), calorie calculation means
The calculation operation of the required heat amount (Qr) of the room (R) according to (14) can be specifically obtained.

According to a third aspect of the present invention, in the operation control device for an air conditioner of the first aspect, the operation of calculating the heat outflow characteristic value (KA) by the characteristic value calculating means (13) is performed by the air conditioning. It is designed to be performed when the device (1) is installed in the room (R) or at regular intervals after installation.

With this configuration, the air conditioning operation of the room (R) by the air conditioner (1) is performed after the heat outflow characteristic value (KA) is calculated by the characteristic value calculating means (13). . In particular, the heat outflow characteristic value (K ·
When calculating A), when the thermal performance of the room (R) changes, the heat outflow characteristic value (K ·
A) will be obtained. For this reason, an appropriate operation capacity of the air conditioner (1) can always be obtained.

[0016]

Next, embodiments of the present invention will be described with reference to the drawings. FIG. 2 shows an installation state of the air conditioner (1) in a room (R) according to the present embodiment. This air conditioner (1) is connected via a refrigerant pipe (3) to a wall-mounted indoor unit (2) installed on the wall of the room (R) and an indoor unit (2) installed outdoors. Outdoor unit (4). The indoor unit (2) includes a blower fan, an indoor heat exchanger, and the like (not shown), and draws indoor air with driving of the blower fan, and transfers the air to a refrigerant flowing through the heat exchanger. After the heat is exchanged (the air is heated by the refrigerant during heating and the air is cooled by the refrigerant during cooling), the temperature is adjusted to conditioned air, and then the air is blown into the room. In addition, an air temperature sensor (Ths) for detecting the intake air temperature (Ts) is provided at the air intake port of the indoor unit (2), and a blow-off air temperature (Tf) is provided at the air outlet port. Each of the outlet temperature sensors (Thf) is provided. The indoor unit (2) is further connected to a remote controller (5) for operating and stopping the air conditioner (2), inputting an indoor set temperature, and the like. The remote controller (5) is provided with an indoor temperature sensor (Thin) for detecting an indoor temperature (Tin).

On the other hand, the outdoor unit (4) includes a compressor (not shown),
It has an outdoor heat exchanger, an outdoor fan, etc., and introduces outside air with the driving of the outdoor fan, and exchanges heat between the refrigerant flowing through the outdoor heat exchanger and the outside air (the refrigerant evaporates during heating, the refrigerant evaporates during cooling). Is condensed). Further, an outdoor air temperature sensor (Thout) for detecting an outdoor air temperature (Tout) is provided at an outdoor air inlet of the outdoor unit (4).

Further, the present air conditioner (1) includes an indoor unit (2)
And a controller to control each unit of the outdoor unit (4)
(C). Then, each of the sensors (Ths, Thf, Thi
n, Thout) is transmitted to the controller (C). In addition, this air conditioner (1)
In addition to the normal indoor (R) air-conditioning operation, there is a recognition operation performed when the air conditioner (1) is installed in the room (R). This recognition operation is for recognizing the thermal performance of the room (R) as described later.

Hereinafter, the configuration of the controller (C) will be described.

As shown in FIG. 3, the controller (C) comprises an operating means (11), a capacity calculating means (12), and a characteristic value calculating means.
(13), a calorie calculating means (14), a judging means (15) and a capacity changing means (16). Hereinafter, each means (11 to 16) will be described.

The operating means (11) operates the air conditioner (1) during the recognition operation for recognizing the thermal performance of the room (R) and during the air conditioning operation for cooling or heating the room (R). Things.

The capacity calculating means (12) is provided with the driving means
(11) When operating the air conditioner (1)
It calculates the driving ability of (1), and specifically,
The heat quantity (QRA) of the conditioned air supplied from the air conditioner (1) to the room (R) is calculated by the following equation.

QRA = Vi · (Tf−Ts) (where, Vi is the blown air volume of the conditioned air, Tf is the blown air temperature of the conditioned air, and Ts is the suction temperature of the indoor air)

The characteristic value calculating means (13) is for recognizing the thermal performance of the room, and performs a recognition operation of the thermal performance of the room when the air conditioner (1) is installed. At this time, a heat outflow characteristic value (K · A) indicating the ease of heat outflow from the room (R) to the outside is calculated. That is, in a state where the conditioned air of a predetermined amount of heat (QRA) is supplied from the air conditioner (1) to the room (R), the outside air temperature (Tout) and the room temperature (Tout)
in) and the air-flow calorific value (QRA) to calculate the heat outflow characteristic value (KA), which is the product of the heat transmission coefficient (K) of the room wall etc. and the area (A) of the room wall etc. Is what you do. In addition, the recognition of the thermal performance of this room
Not only at the time of (1) installation but also at regular intervals (for example, three months) after the installation, more accurate thermal performance can be recognized.

The operation of calculating the heat outflow characteristic value (K · A) is performed by the following equation. KA = QRA /
(Tin−Tout) (where K is the heat transmission coefficient of the wall, etc., A is the area of the wall, etc., T
in is room temperature, Tout is outside air temperature)

The calorific value calculating means (14) operates during the air conditioning operation.
Receiving the output of the characteristic value calculating means (13), the heat outflow characteristic value (K ·
The required heat quantity (Qr) of the room (R) is calculated by the following equation using A).

Qr = K · A · (Tset−Tout) (where Tset is the indoor set temperature)

The determining means (15) receives the outputs of the capacity calculating means (12) and the calorific value calculating means (14) during the air conditioning operation, and
(R) is supplied to the room (R)
It is determined whether or not the required heat quantity (Qr) is satisfied.

The capacity changing means (16) receives the output of the judging means (15) during the air-conditioning operation, and changes the heat quantity (QRA) of the conditioned air supplied to the room (R) to the required heat quantity (Qr) of the room (R). ), The operating capacity of the air conditioner (1) is changed so that the two (QRA, QR) coincide with each other.

Next, the operation of the air conditioner configured as described above will be described with reference to the flowchart of FIG.
First, a recognition driving operation for recognizing the thermal performance of the room (R) will be described. This operation is performed by steps ST1 to ST5 in FIG. Specifically, first, in step ST1, the operation of the air conditioner (1) is started. In this driving, particularly, this recognition driving operation is performed indoors.
Since it is not intended to perform air conditioning of (R), it is not necessary to operate according to the set temperature of the room (R). Then, in this operation state, in step ST2,
Set air volume (Vi) set by controller (C), suction air temperature (Ts) detected by suction temperature sensor (Ths), blown air temperature (Tf) detected by blowout temperature sensor (Thf), indoor temperature sensor
(Thin) detects the indoor temperature (Tin) and the outdoor temperature sensor (Tho
The outdoor temperature (Tout) detected by ut) is read. Here, the controller is used as a detection signal for the set airflow (Vi).
Although the set value of (C) is read, a sensor for detecting the number of revolutions of the indoor fan may be used, and the set airflow (Vi) may be calculated from the detection signal.

Thereafter, in step ST3, the current operating capacity of the air conditioner is calculated. That is, the calorific value (QRA) of the conditioned air supplied from the air conditioner (1) to the room (R) is calculated by the above equation. In step ST4, it is determined whether or not the current operation state is the indoor (R) air conditioning operation. Here, here, since the recognition operation recognizes the thermal performance of the room (R), the determination is NO, and the process proceeds to step ST5. In this step ST5, the heat outflow characteristic value (KA) is calculated by the above equation, and the process is returned. Thereby, the thermal performance of the room (R) can be recognized. In other words, indoors (R) with relatively low heat insulation, such as wooden houses
When the air conditioner (1) is installed in the air conditioner, the heat outflow characteristic value (KA) is set to a high value. vice versa,
When the air conditioner (1) is installed in a room (R) with relatively high heat insulation, such as a reinforced concrete house, the heat outflow characteristic value (KA) is set to a low value. Will be.

Next, an air-conditioning operation for cooling or heating the room (R) will be described. This operation is shown in FIG.
Step ST1 to Step ST4 and Step ST6 in
STStep ST10. Specifically, first, in step ST1, the operation of the air conditioner (1) is started. This operation is performed based on the set temperature of the room (R) set by the remote controller (5), unlike the above-described recognition operation. Then, in this operation state, step ST2
In the same manner as above, the set airflow (Vi) and various temperatures (Ts, Tf, Ti
n, Tout) is read. Thereafter, in step ST3, the current operating capacity of the air conditioner (1) (supplied heat (QRA) by the above equation) is calculated in the same manner as described above. Then, in step ST4, the current operation state is
(R) is the air-conditioning operation, so it is determined to be YES, and step ST
Move to 6. In this step ST6, the indoor
The required amount of heat (Qr) for (R) is calculated. Thereafter, the process proceeds to step ST7, in which the supplied heat quantity (Q
RA) and the required heat quantity (Qr) calculated in step ST6 are determined. That is, it is determined whether or not the current operation performance of the air conditioner (1) is appropriate for the thermal performance of the room (R) and the required amount of heat (Qr). If the two are not equal, the process proceeds to step ST8 to change the operation capability of the air conditioner (1). Specifically, when the operation capacity of the air conditioner (1) is insufficient, the capacity of the compressor of the outdoor unit (4) is increased or the air volume of the blower fan of the indoor unit (2) is increased.
Conversely, when the operation capacity of the air conditioner (1) is excessive, the capacity of the compressor is reduced or the air volume of the blower fan is reduced. Such an operation is repeated until the supplied heat amount (QRA) and the required heat amount (Qr) become equal, and when both are equal, the determination in step ST7 is YES and the process proceeds to step ST9. In step ST9, a timer is activated. In step ST10, when the timer counts a predetermined time (for example, one hour) and times out, the process returns to step 2 and repeats the above-described operation. That is, the outside air temperature
Even if the required amount of heat (Qr) fluctuates due to a change in (Tout) or opening / closing of an indoor window, the operating capability of the air conditioner (1) changes accordingly. Because of such a driving operation, the driving means (11) in step ST1, the capacity calculating means (12) in step ST3, the characteristic value calculating means (13) in step ST5, and the heat amount calculating means ( 14), the determination means (15) is configured in step ST7, and the capability changing means (16) is configured in step ST8.

The results of an experiment conducted to confirm the effect of the present invention are shown by solid lines in FIG. 5 (broken lines and dashed lines are those of conventional control). As shown in this figure, the room temperature can be quickly brought close to the set temperature (Tset), and there is almost no change in the room temperature thereafter.

As described above, according to this embodiment, the air conditioner (1) itself recognizes the thermal performance of the room (R) accurately, and adjusts the operation capacity based on the performance.
Driving ability suitable for (R) can be obtained. Therefore, the time required for the room temperature to reach the set temperature becomes longer (broken line in FIG. 5), as in the conventional case where the operation capacity is set only by the difference between the room temperature and the set temperature,
The room temperature does not overshoot (the dashed line in FIG. 5), and the indoor comfort can be favorably maintained.

In each of the above embodiments, the air conditioner (2)
Although a case where a wall-mounted type is used has been described, other air conditioners such as a ceiling-mounted type can also be used.

[0036]

As described above, according to the present invention, the following effects can be obtained. According to the first aspect of the present invention, the air conditioner itself recognizes the thermal performance of the room by the recognition operation, and performs the air supply such that the amount of heat supplied to the room becomes the required amount of heat in the room during the air-conditioning operation. Change the operating capacity of the harmony device. Therefore, to obtain the operating state of the air conditioner suitable for the thermal performance of the installed room without increasing the time until the room temperature reaches the set temperature or overshooting the room temperature. Therefore, it is possible to maintain good indoor comfort.

According to the second aspect of the present invention, the operation of calculating the calorific value of the conditioned air by the capacity calculating means, the calculating operation of the heat outflow characteristic value by the characteristic value calculating means, and the calculating operation of the required indoor heat amount by the heat amount calculating means are performed. Specifically, it is possible to obtain a signal processing procedure for ensuring the effect according to the first aspect of the present invention.

According to the third aspect of the present invention, the indoor air-conditioning operation is performed by the characteristic value calculating means after the characteristic value calculating operation, so that the effect according to the first aspect of the present invention is ensured. In particular, in the case of performing the operation of calculating the characteristic value at regular intervals, when the thermal performance in the room changes, the characteristic value following the change is obtained. An appropriate driving ability can always be calculated.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of the present invention.

FIG. 2 is a diagram illustrating an installation state of an air conditioner.

FIG. 3 is a block diagram illustrating a configuration of a controller.

FIG. 4 is a flowchart illustrating an operation control operation of the air conditioner.

FIG. 5 is a diagram for comparing changes in the room temperature between the control operation of the present invention and a conventional control operation.

[Explanation of symbols]

 (1) Air conditioner (11) Operating means (12) Capacity calculating means (13) Characteristic value calculating means (14) Heat quantity calculating means (15) Judging means (16) Capacity changing means (R) Indoor

Claims (3)

[Claims] An air-conditioned air is supplied to a room (R) to supply the air to the room (R).
(R) air conditioner (1), and air conditioner during recognition operation for recognizing the thermal performance of the room (R) and air conditioning operation for cooling or heating the room (R) Operating means (11) for operating (1), and when the air conditioner (1) is operated by the operating means (11), the amount of heat of the conditioned air supplied to the room (R) by the air conditioner (1) ( The capacity calculation means (12) for calculating the QRA) and the output of the capacity calculation means (12) at the time of the recognition operation described above, and the heat from the room (R) to the outside is utilized by using the heat quantity (QRA) of the conditioned air. A characteristic value calculating means (13) for calculating a heat outflow characteristic value (KA) indicating the ease of outflow, and receiving an output of the characteristic value calculating means (13) during the air-conditioning operation,
A calorie calculating means (14) for calculating a required heat quantity (Qr) of the room (R) using the heat outflow characteristic value (KA); a capacity calculating means (12) and a calorie calculating means during the air-conditioning operation;
A determination means (15) for receiving the output of (14) and determining whether or not the heat quantity (QRA) of the conditioned air supplied to the room (R) matches the required heat quantity (Qr) of the room (R). Similarly, during the air-conditioning operation, the output of the determination means (15) is
When the amount of heat (QRA) of the conditioned air supplied to (R) does not match the required amount of heat (Qr) of the room (R),
An operation control device for an air conditioner, comprising: a capacity changing means (16) for changing the operation capacity of the air conditioner (1) so that A, Qr) coincide with each other. 2. The capacity calculating means (12) calculates the heat quantity (QRA) of the conditioned air supplied to the room (R) by the following equation: QRA = Vi. (Tf-Ts) (where Vi is the blowing air quantity of the conditioned air, Tf is calculated from the air-conditioning air blowing temperature and Ts is the indoor air suction temperature. The characteristic value calculating means (13) calculates the heat outflow characteristic value (KA) by the following equation: KA = QRA / (Tin- Tout) (However, K is the coefficient of thermal transmission of the wall, etc., A is the area of the wall, etc., T
in is the room temperature and Tout is the outside air temperature), and the calorie calculating means (14) calculates the required heat amount (Qr) of the room (R) by the following equation: Qr = KA · (Tset−Tout) (where Tset 2. The operation control device for an air conditioner according to claim 1, wherein the operation control device calculates the temperature based on an indoor set temperature. The operation of calculating the heat outflow characteristic value (K · A) by the characteristic value calculating means (13) is performed in the room (R) of the air conditioner (1).
The operation control device for an air-conditioning apparatus according to claim 1, wherein the operation control is performed at a fixed time period or at a time after installation.