JP6272101B2 - Air volume control method in air conditioning system - Google Patents

Description

  The present invention relates to an air conditioning system, and more particularly, to an air volume control technique for an air conditioner blower in an air conditioned space provided with an air control opening.

  In general, the air volume control of the air conditioner is performed by the frequency control of the inverter blower, and the operation frequency corresponding to the required air volume is set based on the temperature of the air conditioning target space or the air conditioner return temperature. The actual supply air volume is determined by the set frequency of the blower and the value of the static pressure outside the air conditioner.

  However, even if the pressure loss amount (that is, the static pressure outside the air conditioner) of the air passage (the air control opening, the duct, etc.) changes due to opening and closing of the air control opening, the operating frequency of the blower is not changed. For this reason, there is a problem that when the static pressure outside the machine becomes small, the blower becomes overloaded and the air volume becomes excessive, and when the static pressure outside the machine becomes large, the air volume becomes insufficient due to increased resistance.

As a control method corresponding to such an external static pressure change, a method of reflecting measurement values of a wind speed sensor and a pressure sensor is generally used, but there are problems in that the system configuration is complicated and the cost is increased.
For example, Patent Documents 1 to 3 are disclosed as techniques for detecting the air volume without using a special sensor.

Japanese Patent Laid-Open No. 7-4730 JP-A-7-63404 JP 7-280330 A

  The present invention provides an air volume control technology for an air conditioner that can achieve both comfort and energy saving without providing a separate sensor outside the air conditioner by utilizing the relationship between the air path resistance and the axial current value of the blower. To do.

The gist of the present invention is as follows. That is, the blower air volume control method of the air conditioning system according to the present invention is:
(1) In an air conditioning system in which an airflow passing through an air conditioner is blown out to a target space by a blower through a plurality of air control openings, and the target space is cooled and heated.
The fan is adjusted to an appropriate air volume by estimating the air inlet utilization rate based on the relationship between the axial current value acquired in advance and the wind path resistance and the measured axial current value of the operating fan. .

(2) In the invention of the above (1), the air restriction port is configured to be able to select passage or block of the air flow by the opening / closing means, and the air restriction port utilization rate is a ratio of the air restriction ports in the open state. It is characterized by being.

(3) In the above invention (1),
(A1) Air volume-external static pressure table (table A) with the fan frequency as a parameter;
(A2) an air volume-external static pressure table (table B) having an air path resistance corresponding to each air opening as a parameter;
(A3) a step of obtaining a blower frequency-axis current value table (table C) using air path resistance as a parameter;
(A4) Using Tables A and B, a step of operating at a blower frequency (F0) corresponding to the airflow resistance (R0) and the set airflow rate (Q0) at the standard opening of each air restriction port;
(A5) a step of measuring an actual fan shaft current value (I0 ′) during operation;
(A6) A step of estimating the current air inlet use rate by obtaining an airflow resistance (R0 ′) corresponding to the blower shaft current value (I0 ′) using the table C;
(A7) Using Tables A and B, obtaining the blower frequency (F0 ′) corresponding to the airflow resistance (R0 ′) and the airflow rate (Q0);
(A8) adjusting the blower frequency to the frequency (F0 ′), thereby continuing the operation with the set air flow rate (Q0);
It is characterized by including.

(4) In the above invention (2),
(B1) A step of acquiring a blower frequency-axis current value table (table D) using the air outlet utilization factor as a parameter,
And in addition to (a5) to (a8),
(B2) a step of measuring an actual fan shaft current value (I (t2)) during operation;
(B3) Using the table C, obtaining an air path resistance (R2) corresponding to the fan shaft current value (I (t2));
(B4) Using the table D, estimating the current air inlet utilization rate (U2);
(B5) a step of calculating a necessary air volume (Q2) corresponding to the air inlet use rate (U2);
(B6) Using the tables A and B, obtaining the blower frequency (F2) corresponding to the air path resistance (R2) and the blowing amount (Q2);
(B7) adjusting the blower frequency to the frequency (F2) and continuing the operation;
It is characterized by including.

  ADVANTAGE OF THE INVENTION According to this invention, when it becomes an excessive air volume supply state (target air volume <actual air volume) by the overload of the air conditioner fan, it can adjust to an appropriate air volume and has an effect of contributing to an energy-saving operation.

(5) In the inventions of the above (2) and (3), the air control port includes an ambient air control port for air conditioning of the entire target space, and a personal air control port for the purpose of individual air conditioning. Including
The air intake port utilization rate is estimated based on a personal air intake port utilization rate.

(6) In the invention of (5) above,
When the utilization rate of the air restriction opening exceeds a predetermined upper limit (Umax), a step of decreasing the air blower temperature by a predetermined value;
When the utilization rate of the air restriction opening is below a predetermined lower limit (Umin), a step of increasing the set temperature by a predetermined temperature;
It is characterized by including.

  The present invention intends to optimize the indoor set temperature based on the utilization rate of the personal air conditioning vent. For example, a person who is uncomfortable because the room temperature is too high during cooling opens the personal air conditioning vent. A person who is uncomfortable because the room temperature is too low closes the personal air conditioning vent. The present invention utilizes this characteristic to use the opening ratio of the personal air conditioning vent as a reporting index for the comfort of the room occupants. Thereby, the indoor environment can always be kept comfortable.

(7) In an air conditioning system in which conditioned air produced by a plurality of air conditioners is blown out to a target space containing a plurality of server racks by a blower to cool a plurality of servers in the server rack,
Calculating the total cooling fan airflow based on the power measurement of the cooling fan of each server;
Increasing or decreasing the air flow rate of each air blower so that the air blower air flow total value matches the cooling fan air flow total value;
It is characterized by including.

  The present invention is used for applications that require delicate air volume control, for example, for data centers that require fine adjustment control of the air conditioner frequency in order to match the fan air volume on the ICT device side and the actual air volume of the air conditioner. It is particularly effective.

(8) In the invention of (7) above,
A step of calculating a required total amount of cold heat (ΣWi) for maintaining each blowing temperature at a predetermined temperature (T0) based on the blowing amount of each blower;
In an air-conditioning system that cools multiple servers in a server rack by blowing air-conditioned air created by an air-conditioner into a target space that houses multiple server racks using a blower,
Calculating the cooling fan total air flow based on the power measurement of the cooling fan of each server;
Calculating the total required total amount of cold heat (ΣWi) for each air conditioner;
Based on the coefficient of performance (COP) of each air conditioner, calculating the number of air conditioner operations and capacity sharing for minimizing the total power consumption (ΣEi);
Based on the calculation result, a step to operate with the required number of air conditioners and capacity,
It is characterized by including.

  According to each of the above-described inventions, even if the specifications and quantity of ducts and air vents outside the machine are changed after the air volume of the air conditioner is set, it is possible to easily adjust to the appropriate air volume. Therefore, there is an effect that adjustment at the time of trial operation is unnecessary.

  In addition, there is an effect that reliability can be improved by performing control to urgently cancel the air volume upper limit value when the air volume deficiency occurs in the air volume fixing system.

  In addition, it is possible to obtain indoor usage information (open / close ratio of personal air-conditioning openings (personal air-conditioning), opening ratio of double floor / ceiling perforated panel, etc.) without installing an external sensor. Therefore, there is an effect that the cost of the air conditioning system can be reduced.

It is a figure showing the whole air-conditioning system 1 composition concerning a first embodiment. It is a figure which shows notionally the content of the table A (air volume-external static pressure table). It is a figure which shows notionally the content of the table B (air volume-air path resistance table). It is a figure which shows notionally the content of the table C (blower frequency-shaft current value which uses a ventilation port utilization factor as a parameter). It is a figure which shows the air blower air volume control flow in 1st embodiment. It is a figure which shows the method of estimating actual wind path resistance R0 'using the table C. FIG. It is a figure which shows the method of calculating | requiring the frequency F0 'which satisfy | fills the setting air volume Q0 with Tables A and B. It is a figure which shows the air blower air volume control flow in 2nd embodiment. It is a figure which shows notionally the content of the table D (The relationship of an air-control opening utilization factor (U) -air-path resistance (R)). It is a figure which shows the method of estimating actual wind path resistance R2 corresponding to axial electric current value I2 using the table C. FIG. It is a figure which shows the structure of the air conditioning system 30 which concerns on 3rd embodiment. It is a figure which shows the air blower air volume control flow in 3rd embodiment. It is a figure which shows the structure of the air conditioning system 40 which concerns on 4th embodiment. It is a figure which shows the air blower air volume control flow in 4th embodiment. It is a figure which shows the air blower air volume control flow in 5th embodiment. It is a figure which shows notionally the content of the table E (air conditioner operation rate-relationship of COP).

  Hereinafter, each embodiment of the air-conditioning system according to the present invention will be described in more detail with reference to FIGS. 1 (a) to 5 (c). In order to avoid redundant description, the same components are denoted by the same reference numerals in the respective drawings. Needless to say, the scope of the present invention is described in the claims and is not limited to the following embodiments.

<First embodiment>
The present embodiment relates to a mode in which the degree of opening and closing of the air control opening is estimated and the deviation between the target air volume and the actual air volume of the air conditioner blower can be adjusted.
With reference to FIG. 1, an air conditioning system 1 according to the present embodiment is a system that cools an air-conditioning target room 5 with an air conditioner 4. The interior of the air-conditioning target room 5 is divided into three spaces by a floor panel 5d and a ceiling panel 5e, a central space 5a, a double floor space 5c below the floor panel 5d, and a ceiling above the ceiling panel 5e. A space 5b is formed.

  The air conditioner 4 includes an indoor unit 4a including an evaporator 4e and a blower 4c, an outdoor unit (not shown) that mainly includes a compressor, a condenser, and the like, and a refrigerant pipe 4d that connects the units. . The indoor unit 4a and the double floor space 5c or the ceiling space 5b are connected via the forward duct 7a or the return duct 7b, respectively. With this configuration, the air conditioner 4 cools the cold air generated by the refrigeration cycle operation by supplying the indoor air returned to the indoor unit 4a through the ceiling space 5b and the return duct 7b to cool the air, and the air blower 4c doubles the cold air. It supplies in the indoor space 5a through the floor space 5c.

A plurality of air vents 6 are attached to the floor panel 5 d so that cool air or warm air from the air conditioner 4 can be supplied to the indoor space 5 a through the air vents 6. Each air control opening 6 is provided with an opening / closing shutter 6a, which allows passage / blocking of airflow and air volume adjustment.

  In the air conditioning system 1, the indoor space 5a is air-conditioned as follows. That is, the indoor air introduced into the air conditioner 4 exchanges heat in the evaporator 4e to become cold air, and is sent to the double floor space 5c by the blower 4c through the forward duct 7a. The cool air is supplied to the indoor space 5a through the air control opening 6. The exhaust is led from the suction port 5g of the ceiling panel 5e to the ceiling space 5b and returned to the air conditioner 4 via the return side duct 7b. Indoor air conditioning is performed by the indoor air circulation as described above.

Operation control of the air conditioning system 1 is performed by the control unit 2. The control unit 2 is provided with the following table for enabling the blower control of the present embodiment.
(A) Table A (air volume-external static pressure table) (see FIG. 1 (a))
The characteristic diagram showing the relationship between the blower air volume (Q) and the external static pressure (P) with the frequency F as a parameter.
(B) Table B (air volume-air path resistance table) (see FIG. 1C)
The characteristic chart shows the relationship between the air volume (Q) and the air path resistance (R) when the air opening is changed.
(C) Table C (frequency-axis current value table) (see FIG. 1D)
The characteristic diagram showing the relationship between the blower frequency (F) and the shaft current value (I) with the air path resistance (R) as a parameter is included.

Next, referring to FIG. 1 (e), the mode of the blower air volume control in the present embodiment will be described.
In the initial state, it is assumed that the airflow resistance R0 in the standard opening state (for example, full open) of each air restriction port is operated with the set air volume Q0 and the frequency F0 (see FIG. 1B) (S101). During the control, the axial current value (I (t)) of the blower is measured at a predetermined interval (S102). It is assumed that the shaft current value I (t1) = I0 ′ at a certain time (time t = t1). Referring to FIG. 1 (f), in this case, according to Table C, the axial current value corresponding to the wind path resistance R0 and the frequency F0 is I0, but the measured axial current value I0 ′. It is estimated that the actual wind path resistance R (t1) = R0 ′ (S103).

  Next, using Tables A and B (see FIG. 1G), a frequency F ′ that satisfies the air volume Q0 in the current estimated wind path resistance R0 ′ is obtained (S104). In the figure, point X0 is the air volume / air path resistance / frequency set value (Q0, P0, F0), and X0 'is the actual state (Q0', P0 ', F0). Thus, in order to maintain the set air volume Q, it is necessary to adjust to the point Xa, that is, the blower frequency F '(S105). With the above control, it is possible to operate to maintain the set air volume Q0 even when the air opening opening state changes.

  In addition, although the example which installed the air-control opening in the floor surface was shown in this embodiment, it can also be set as the aspect which installs an air-control opening in a ceiling surface.

<Second Embodiment>
Next, another embodiment of the present invention will be described. The present embodiment relates to a mode in which increase / decrease control of the blower air volume is performed in accordance with the opening state of the air control opening.
The configuration of the present embodiment is different from that of the above-described embodiment in that the control unit 2 creates a table D containing the relationship of the air intake port utilization rate (U) -air path resistance (R) shown in FIG. It is also equipped with. Since the other configuration is the same as that of the air conditioning system 1 described above, a duplicate description is omitted.

The basic concept of the air volume control according to this embodiment is as follows. For example, assume a system having 10 air vents with a design air volume of 100 m 3 / (h · piece). In this case, if the air inlet utilization rate is 100% (all air outlets are open),
Target air volume = 100m3 / (h · pieces) x 10 pieces = 1000m3 / h
In addition, in the case of 50% air intake utilization rate (5 out of 10 are open)
Target air volume = 100m3 / (h · pieces) × 5 pieces = 500m3 / h
It becomes. In general, if the design air volume Qd and the utilization rate U (t) (%) of each air outlet are set, the target air volume Qa at that time (t) is
Qa = ΣQd * (U (t) / 100) (1)
Indicated by Thus, it is possible to optimize the target air volume by estimating the air intake port utilization rate.

  Next, a specific blower air volume control flow in this embodiment will be described. With reference to Fig.2 (a), it assumes that it drive | operates by the setting air volume Q0 and the frequency F0 as air path resistance R0 in an initial state (S201). During the control, the axial current value (I (t)) of the blower is measured at a predetermined interval (S202). When the shaft current value I (t2) = I2 at a certain point in time (time t = t2), the actual wind at that time using the table C (see 2 (c)) in the same manner as in the above-described embodiment. The road resistance R2 can be estimated (S203).

  Next, using the table D, the utilization rate U2 at the time of the wind path resistance R2 is estimated (see 2 (b)) (S204), and the target air volume Q2 is obtained from the above equation (1) (S205). Further, the table A and B are used to set the blower frequency F2 that satisfies the external static pressure R2 and the air volume Q2, and the operation is continued (S206).

  In the present embodiment, when calculating the air intake port utilization rate, it is set to 100% (fully open) or 0% (fully closed), but 0, 50, 100 (%) (fully open, half open, fully closed), continuous ( It can also be set as the aspect calculated as a setting of 0-100%.

<Third embodiment>
Furthermore, another embodiment of the present invention will be described. The present embodiment relates to a blower air volume control in an air-conditioning target space where a plurality of types of air control ports are mixed.

  With reference to Fig.3 (a), the point from which the structure of the air-conditioning system 30 which concerns on this embodiment differs from the above-mentioned embodiment is that the type of air-control opening which differs, ie, the ambient air-control opening 31 as whole air-conditioning, And an air vent 32 for personal air conditioning. Each air control opening is configured to receive a supply of cool and warm air from a blower 35 a of an air conditioner 35 via a duct 34.

Among these, the ambient air control port 31 always depends on a constant air volume. On the other hand, the personal air vent 32 can be individually opened and closed based on the user's comfort judgment, and is configured so that the wind speed can be selected according to the user's preference.
Furthermore, the control part 33 is provided with the table which makes the content of the relationship of the air-control opening utilization factor (U) -air-path resistance (R) equivalent to the table D of the above-mentioned embodiment.
Since the other structure is the same as the above-mentioned double floor air-conditioning system 1, duplication description is abbreviate | omitted.

  Next, the aspect of blower air volume control in the air conditioning system 30 in the present embodiment will be described. The following basic concept of control is to optimize the indoor set temperature in accordance with the utilization rate of the personal air vent 32. Generally, a person who feels uncomfortable because the room temperature is too high during cooling opens the personal air vent 32. A person who feels uncomfortable because the room temperature is too low closes the air vent 32. Utilizing this characteristic, the utilization rate (opening ratio) of the air vent 32 is used as a reporting index for the comfort of the room occupants. That is, when the opening rate of the air control port 32 is lower than the threshold value, the set temperature is raised, and when it is larger than the threshold value, the set temperature is lowered.

  Hereinafter, referring to FIG. The blower air volume control flow of this embodiment will be described. In the initial state, it is assumed that the operation is performed with the set air volume Q3 and the frequency F3 as the standard air path resistance R3 (S301). Further, the compressor frequency is controlled so that the standard blow-out temperature T0 is set (S302). The ambient air control port 31 operates with a constant opening and a constant air volume at all times. On the other hand, the personal air vent 32 performs the opening / closing operation individually according to the user's comfort determination (S303).

During the control, the control unit 36 measures the axial current value (I (t)) of the blower at a predetermined interval (S304). It is assumed that the shaft current value was I3 at a certain time. In this case, using the table A, it is estimated that the wind path resistance (external static pressure) R3 corresponding to the frequency F3 and the shaft current value I3 (S305).
Next, using the table D, in the same manner as in the above-described embodiment, the air intake opening utilization ratio (opening ratio) U (t) (%) at the current air path resistance R3 is estimated (S306). Further, it is determined whether or not U (t) is within the range of the upper and lower threshold values (S307).
If the utilization rate U (t) exceeds the upper limit threshold Umax, the user determines that the room temperature is too high and lowers the set temperature by 1 ° C. (S308). If the utilization rate U (t) is lower than the lower limit threshold Umin, the user determines that the room temperature is too low and raises the set temperature by 1 ° C. (S309). If Umax ≧ U (t) ≧ Umin, it is determined that there is no dissatisfaction with the current temperature, and the current set temperature is maintained (S310).

<Fourth embodiment>
Furthermore, another embodiment of the present invention will be described. The present embodiment relates to blower air volume control in an air-conditioning target space provided with a plurality of air conditioners.
With reference to Fig.4 (a), the point from which the structure of the air conditioning system 40 which concerns on this embodiment differs from the above-mentioned air conditioning system 1 is that the same type of air conditioner 41 is provided with two units (n units). . For convenience of display, only two units are shown in FIG. Furthermore, a plurality (m units) of server racks 42 in which a plurality of servers 42a are stored in the room are arranged.

The generated heat from each server 42a is exhausted to the back side together with the air sucked from the front side by a cooling fan (not shown) provided. As a result, the server rack 42 is configured to suck in cool air from the front and exhaust from the back as a whole. Further, the plurality of server racks 42 are arranged so that the intake surfaces and the intake surfaces of the adjacent rows face each other, and the exhaust surfaces and the exhaust surfaces face each other, thereby forming a rack row 44. Thus, a cold aisle 45 is formed on the intake surface side of the rack row 44 and a hot aisle 46 is formed on the exhaust surface side. The exhaust air volume from each server 42a is configured to be grasped in units of racks based on cooling fan power measurement.
Since the other structure is the same as the above-mentioned double floor air-conditioning system 1, duplication description is abbreviate | omitted.

Next, with reference to FIG.4 (b), the flow of the fan air volume control for the cold air supply balance adjustment in this embodiment is demonstrated.
In the initial state, it is assumed that the air blower 41a of each air conditioner 41 is operating with Qi (0) and the total air flow ΣQi (0) (i = 1 to n) (S401).
During the control, the calculation of the total exhaust air volume Σqj (t) (j = 1 to m) is performed based on the cooling fan power measurement of each rack at a predetermined interval (S402). Further, ΣQi (t) and Σqj (t) at that time are compared (S403).

In the case of ΣQi (t)> Σqj (t) + α (α: a margin value for preventing chattering), the frequency of each blower is lowered by one level (S404). If ΣQi (t) <Σqj (t) −α, the frequency of each blower is increased by one step (S405). When the cold air supply and the cooling fan exhaust air volume are balanced (Σqj (t) + α ≧ ΣQi (t) ≧ Σqj (t) −α), the current frequency is maintained (S406).
With the above control, it is possible to maintain a cold air supply / exhaust balance as a whole.

  In the present embodiment, when the supply / exhaust balance is lost, the mode in which the overall air volume is adjusted by simultaneously increasing / decreasing the frequency of each blower 41a is shown.

<Fifth embodiment>
Furthermore, another embodiment of the present invention will be described. This embodiment relates to a blower air volume control for controlling the number of units in order to reduce power consumption in the air conditioning system 40 described above.
The difference of the configuration of the present embodiment from the air conditioning system 30 described above is that the control unit (not shown) includes a table E (see FIG. 5B) that contains the relationship between the operating rate and COP of each air conditioner. It is that. Since the other structure is the same as the above-mentioned double floor air-conditioning system 1, duplication description is abbreviate | omitted.

Hereinafter, with reference to Fig.5 (a), the aspect of the air flow control of the air blower in this embodiment is demonstrated.
During the control, the total exhaust air volume Σqj (j = 1 to m) is calculated based on the power measurement of the cooling fan in the server rack at a predetermined interval (S501). Next, a total blower air flow ΣQi (i = 1 to n) commensurate with the exhaust air flow Σqj is calculated (S502), and a required total cold heat amount (L = ΣWi) of the air conditioner is calculated based on ΣQi (S503).

Furthermore, based on the coefficient of performance (COP: ηi) of each air conditioner, the air conditioner operation that minimizes the total power consumption (ΣEi = Σ (Wi / ηi)) for supplying the required total amount of cold heat (ΣWi). The number and capacity sharing are calculated (S504).

The specific method is as follows. For simplicity, here is the same capacity air conditioner,
The number n is set to 3. Further, a case will be described as an example where the required amount of cold heat supply (ΣWi = L) corresponds to the operation rate of 100% (rated capacity) of two air conditioners in S503.
In this case, when operating with three air conditioners, the operation rate per unit becomes 66.6%. The COP for each operation rate can be obtained from the table E (see FIG . 5B) . Furthermore, the power consumption can be obtained by ΣEi = Σ (Wi / ηi), as shown in Table 1. From the table (d), it can be said that operating three units at 2/3 of the rated capacity enables power-saving operation than operating two units at the rated capacity.

Further, the blower frequency corresponding to the assigned capacity of each obtained air conditioner is calculated (S505), and each fan is operated at the calculated frequency (S506) .
With the above control, energy-saving operation is possible while maintaining a balance between supply and exhaust as a whole.

  The present invention can be widely applied to an air conditioning system that supplies cold air / hot air by a blower regardless of a building / ceiling structure, a heat source type, an office room air conditioner, a machine room air conditioner, or the like.

1, 30, 40 ... Air conditioning system 2, 26, 36 ... Control units 4, 35, 41 ... Air conditioners 4c, 35a, 41a ... Air blower 6 ... Air control Opening shutter 31 ... Ambient air control port 32 ... Personal air control port 42 ... Server rack

Claims (10)

In an air conditioning system that blows airflow passing through an air conditioner to a target space through a plurality of air vents by a blower, and cools and heats the target space,
The control estimated using the relationship between the axial current value of the blower and the airway resistance of the airflow path through which the airflow flows, and the measured axial current value that is the axial current value measured in the blower being operated. A control unit is provided for controlling the blower and adjusting the air volume based on the mouth port utilization rate,
The controller is
An air volume-external static pressure table (table A) indicating a relationship between an air volume blown from the air blower and a static pressure outside the air blower , the air frequency being a rotation frequency of the air blower as a parameter . and, air flow and the air passage resistance parameter corresponding to each Seiki port utilization - using external static pressure table (table B), the air passage in a predetermined Seiki port utilization of the respective control outlet port Resistor (R0), performing control to operate the blower at a blower frequency (F0) corresponding to a set blow amount (Q0) which is a predetermined blow amount of the blower ,
Measurement of the blower shaft current value during operation (I0 '),
Blower frequency as a parameter the air path resistance - with axis current value table (Table C), Ru good to seek 'air path resistance corresponding to the (R0 those air blowing shaft current value (I0)'), Estimating the air outlet usage rate during the operation , and
It said table A, and, by using the table B,該風path resistance (R0 ') and retrieve the blower frequency corresponding to the blowing rate (Q0) (F0'),
Air conditioning system which is characterized in that the control for adjusting the blower frequency to said blower to those the blower frequency (F0 '). In an air conditioning system that blows airflow passing through an air conditioner to a target space through a plurality of air vents by a blower, and cools and heats the target space,
The control estimated using the relationship between the axial current value of the blower and the airway resistance of the airflow path through which the airflow flows, and the measured axial current value that is the axial current value measured in the blower being operated. Based on mouth-mouth usage rate,
A control unit for adjusting the air volume by controlling the blower is provided,
The controller is
An air volume-external static pressure table (table A) showing a relationship between an air volume blown from the air blower and a static pressure outside the air blower, with the air blower frequency being the rotation frequency of the air blower as a parameter. And, using the air volume-external static pressure table (Table B) with the air passage resistance corresponding to each air outlet usage rate as a parameter, the air passage at a predetermined air outlet usage rate of each air outlet Resistor (R0), performing control to operate the blower at a blower frequency (F0) corresponding to a set blow amount (Q0) which is a predetermined blow amount of the blower,
Measurement of the blower shaft current value during operation (I (t2)),
The air path resistance blower frequency as parameters - with axis current value table (Table C), determine the equivalent air blowing shaft current (I (t2)) corresponding to the air path resistance (R2),
Using the blower frequency-axis current value table (table D) with the air intake port utilization rate as a parameter, estimating the air intake port utilization rate (U2) during the operation ,
Calculation of required air volume is blowing amount of the blower corresponding to the Seiki port utilization (U2) (Q2), and,
It said table A, and the using table B, the air path resistance (R2), and retrieving the blower frequency corresponding to the blowing rate (Q2) (F2),
Air conditioning system which is characterized in that the control for adjusting the blower frequency of the blower to those air blowing machine frequency (F2). The air control port includes an ambient air control port for air conditioning of the entire target space and a personal air control port for individual air conditioning,
Wherein the control unit, the air conditioning system according to claim 1 or 2 an estimate of the system air inlet utilization, and performing based on Seiki port utilization in the personal system air outlet. When the air blower of the air conditioner supplies cold air,
When the system outlet port utilization for rate exceeds a predetermined upper threshold value (Umax) performs a control to a predetermined value down to the set temperature of the target space,
Air conditioning system of claim 3 wherein the system outlet port utilization for rate when below the predetermined lower threshold value (Umin), which is characterized in that the control of a predetermined value up to the set temperature. It said system air inlet is configured to select the passage or blocking of the air flow by opening and closing means, and,
The system outlet port utilization, air-conditioning system according to any one of claims 1 4, characterized in that the ratio of Hirakijo status in the system air inlet. In an air conditioning system that blows airflow passing through an air conditioner to a target space through a plurality of air vents by a blower, and cools and heats the target space,
Based on the relationship between the axial current value of the blower and the wind path resistance of the wind path through which the airflow flows, and the measured axial current value that is the axial current value measured in the blower being operated By estimating utilization,
A blower air volume control method for adjusting the volume of air blown from the blower,
(A1) A table having a blower frequency, which is the rotational frequency of the blower, as a parameter, and an air volume-external static pressure table (table) indicating a relationship between an air volume blown from the blower and a static pressure outside the blower. A) and
(A2) the air volume as a parameter the air path resistance corresponding to each Seiki port utilization - and external static pressure table (Table B),
(A3) the blower frequency is the air path resistance parameters - acquiring an axis current value table (Table C), and
(A4) Using the table A and the table B, the air flow resistance (R0) at a predetermined air- control port utilization rate of each air-control port, and a set air flow rate (Q0 ) that is a predetermined air-flow rate of the blower ) Operating the blower at a blower frequency (F0) corresponding to
A step of measuring the (a5) the put that feed air shaft current value during operation (I0 '),
(A6) using the table C, by obtaining an equivalent air blowing shaft current (I0 ') corresponding air path resistance (R0'), estimating a Seiki port utilization during the operation,
(A7) and step the table A, and, by using the table B, those該風path resistance (R0 ') for acquiring, blower frequency corresponding to the blowing rate (Q0) (F0'),
(A8) by adjusting the blower frequency to those the blower frequency (F0 '), the steps of operation continues by setting air volume (Q0),
A method for controlling the air volume of a blower of an air conditioning system, comprising: In an air conditioning system that blows airflow passing through an air conditioner to a target space through a plurality of air vents by a blower, and cools and heats the target space,
Based on the relationship between the axial current value of the blower and the wind path resistance of the wind path through which the airflow flows, and the measured axial current value that is the axial current value measured in the blower being operated By estimating utilization,
A blower air volume control method for adjusting the volume of air blown from the blower,
(A1) A table having a blower frequency, which is the rotational frequency of the blower, as a parameter, and an air volume-external static pressure table (table) indicating a relationship between an air volume blown from the blower and a static pressure outside the blower. A) and
(A2) an air volume-external static pressure table (table B) with the air path resistance corresponding to each air outlet utilization as a parameter;
(A3) obtaining a blower frequency-axis current value table (table C) using the air path resistance as a parameter;
(A4) Using the table A and the table B, the air path resistance (R0) at a predetermined air-control opening utilization rate of each air-control opening, and a set air flow (Q0) that is a predetermined air-flow rate of the blower ) Operating the blower at a blower frequency (F0) corresponding to
(B1) the blower frequency is the Seiki port utilization parameters - acquiring axis current value table (Table D),
A step of measuring the (b2) the put that feed air shaft current value during operation (I (t2)),
(B3) using said table C, a step of obtaining an equivalent air blowing shaft current (I (t2)) corresponding to the air path resistance (R2),
(B4) using said table D, a step of estimating Seiki port utilization rate during the operation of (U2),
(B5) a step of computing required flow amount (Q2) is a blowing amount of the blower corresponding to the Seiki port utilization (U2),
(B6) a step wherein the table A, and, by using the table B, the air path resistance (R2), to obtain the blower frequency (F2) corresponding to the blowing rate (Q2),
(B7) and feeding said air blower frequency of the blower Ru in adjusted pollock those air blowing machine frequency (F2) step,
A method for controlling the air volume of a blower of an air conditioning system, comprising: The air control port includes an ambient air control port for air conditioning of the entire target space and a personal air control port for individual air conditioning,
Blower air volume control method of the air conditioning system according to claim 6 or 7, characterized in that the estimate of the system air inlet utilization, carried out on the basis of the Seiki port utilization in the personal system air outlet. When the air blower of the air conditioner supplies cold air,
When the system outlet port utilization for rate exceeds a predetermined upper threshold value (Umax) includes the steps of predetermined value down the set temperature of the target space,
When the system outlet port utilization for rate falls below a predetermined lower limit threshold value (Umin) includes the steps of predetermined value up to the set temperature,
The method according to claim 8 , further comprising: It said system air inlet is configured to select the passage or blocking of the air flow by opening and closing means, and,
The system outlet port utilization, blower air volume control method of the air conditioning system according to any one of claims 6 9, characterized in that the ratio of Hirakijo status in the system air inlet.

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