JP3414849B2 - Thermal storage type air conditioner - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner using air as a heat source, and has a heat storage function for utilizing nighttime electric power.
And a heat storage type air conditioner having a control function.

[0002]

2. Description of the Related Art Various developments have already been made for a heat storage type air conditioner, for example, JP-A-1-285.
There is a heat storage type air conditioner as disclosed in Japanese Patent No.732.

The conventional basic technique will be described below with reference to the drawings. In FIG. 6, an air-cooling heat pump 1 has a plurality of heat source units 2 having a compressor, a heat exchanger, an expansion valve and the like, a heat storage tank 3 and a refrigerant heat exchanger 4 connected in an annular shape to form a refrigeration cycle A. On the other hand, on the load side, the heat storage tank 3, the refrigerant heat exchanger 4, the refrigerant circulation pump 5, and a plurality of indoor units 6 are sequentially connected in an annular shape to form a refrigerant circulation cycle B.

Reference numeral 7 is a current heat storage amount calculating means, 8 is a schedule operation time setting means, 9 is a load pattern storing means, 10 is an instantaneous load amount predicting means, and 11 is a load pattern detecting means.

Next, the operation of this heat storage type air conditioner will be described. In determining the daily load pattern of the indoor unit 6, the external air temperature and the like are input to the instantaneous load amount prediction means 10, the load state of the indoor unit 6 is determined, and the number of operating heat source units 2 that should supplement the load state. To decide. The determined operating vehicle number data is stored in the load pattern storage means 9 using the outside air temperature at the time of load state determination as a parameter. After the load pattern is determined in this way, the load pattern detection means 11 detects the number of operating heat source units 2 using the outside air temperature as a parameter. As a result, at the operating time of the indoor unit 6, the heat source devices 2 are operated for the number of operating units from the time when maximum heat is stored in the heat storage tank 3.

Further, when the air conditioner is stopped, the schedule operation time setting means 8 determines the stop time of the indoor unit 6, and at the stop time, the remaining heat storage capacity of the heat storage tank 3 is used up so that the heat source device is used. The operation of No. 2 is stopped at a time retroactive to the stop time of the air conditioner, and the remaining heat storage amount in the heat storage tank 3 is adjusted. The operation stop time of the heat source unit 2 is determined based on the amount of heat consumption and the remaining heat storage amount at the time of operating the indoor unit 6.

Further, when the maximum load is predicted during the operation of the indoor unit 6, an additional heat source is provided so as to sufficiently cope with the maximum load so that the heat storage amount becomes insufficient at the maximum load and the indoor unit 6 does not malfunction. The machine 2 is activated.

[0008]

However, in the above-mentioned conventional example, since there is no description of the detailed operation contents of the optimum number determining means, the effective number control method of the heat source device is unknown, and the heat accumulation at the maximum load is not possible. The leveling of the maximum load by maximizing the use of quantity is not considered. Further, since the operation of the heat source device 2 is stopped at a time retroactive to the stop time of the heat storage tank 3, there is a high possibility that the remaining heat storage amount cannot be completely used up.

In view of the above problems, the present invention effectively radiates the amount of heat stored in the heat storage tank and optimally controls the number of operating heat source units, so that the maximum load can be leveled and the running cost can be reduced. It is intended to provide a heat storage type air conditioner.

[0010]

In order to solve the above-mentioned problems, the heat storage type air conditioner of the present invention comprises a maximum load heat source functional force calculation means for reducing the maximum extraction capacity of the heat storage tank from the maximum load amount, and a maximum load Mainly at maximum load by subtracting the value calculated by the calorific value calculation first means from the current heat storage amount by subtracting the result of multiplying the heat source functional value at load by the operating time of the indoor unit from the total daily load Second calorific value calculation that divides the calorific value into two
Means, and an instantaneous heat source functional force calculation first means for calculating a linear expression from the value calculated by the heat amount calculation second means, and an instantaneous heat source machine operation for dividing the instantaneous heat source functional force value by the capacity of one heat source machine and rounding off. A schedule operation setting device is provided, which comprises first unit number calculation means and instantaneous heat storage tank capacity calculation means for subtracting the instantaneous heat source functional force value from the instantaneous load amount predicted value.

Further, the present invention is provided with a third calorific value calculating means for dividing so that the amount of heat storage used becomes equal mainly at the time of maximum load.

[0012] Further, before the maximum load is rounded up,
In the following, a second means for calculating the number of operating heat source units by calculating the number of operating heat source units by rounding down is provided.

In addition, a quadrangle having the same area as the area calculated by the calorific value calculating second means is calculated, and the one closer to the maximum load is made the same as the heat source functional power at the maximum load.
Means are provided.

[0014]

In the heat storage type air conditioner of the present invention, the heat source functional force calculating means for maximum load calculates the heat source functional force at maximum load, and the heat quantity calculating second means mainly calculates heat quantity mainly at maximum load. Since the amount of heat obtained in 2 is divided into two equal parts, the maximum load load can be leveled and insufficient heat storage can be prevented. Also, since the capacity of the heat source machine is determined to use all the heat storage amount, the heat storage amount is used. You can do what you can.

Further, since the third means for calculating the amount of heat is provided, the amount of heat storage used is divided into equal parts mainly at the time of maximum load, and the accuracy of using up the amount of heat storage is further improved.

Further, since the second means for calculating the number of operating instantaneous heat source machines is provided, the number of heat source machines is large before the maximum load, that is, the heat source functional capacity is large, and the heat storage amount remains after the maximum load. It has the effect of preventing insufficient heat storage.

Since the second means for calculating the instantaneous heat source functional force is provided, the number of heat source machines is increased near the maximum load, that is, the heat source functional force is increased, and the maximum load load can be further leveled.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A heat storage type air conditioner according to an embodiment of the present invention will be described below with reference to the drawings. The same components as those in the conventional example are designated by the same reference numerals and detailed description thereof will be omitted. .

FIG. 1 is a schematic configuration diagram of a heat radiation control device for a heat storage type air conditioner in a first embodiment of the present invention.

Reference numeral 12 is an all-day load amount calculation means, and 13 is a maximum load amount calculation means.
The load amount calculation device 14 is configured by the above.

Reference numeral 15 is a maximum load heat source functional force calculating means for subtracting the maximum extraction capacity of the heat storage tank 3 from the value calculated by the maximum load amount calculating means 13, and 16 is a maximum load heat source functional force calculating means 15. A heat quantity calculation first means for subtracting the result of multiplying the operating time of the indoor unit 6 from the value calculated by the all-day load calculation means 12, and 17 is a heat quantity calculation first from the value currently calculated by the heat storage quantity calculation means 7. A heat quantity calculation second means for reducing the value calculated by the means 16 to divide the heat quantity into two equal to the maximum load, and 18 is an instantaneous heat source functional force for calculating a linear expression from the value calculated by the heat quantity calculation second means 17. First calculation means, 19
Is the output value of the instantaneous heat source functional force calculation first means 18
Instantaneous heat source unit operation number calculating means for dividing by the capacity of a unit and rounding off, 20 is an instantaneous heat storage tank capacity calculating means for subtracting the output value of the instantaneous heat source functional force calculating first means 18 from the output value of the instantaneous load amount predicting means 10. And these constitute the schedule operation setting device 21.

The operation of the heat dissipation control device for the heat storage type air conditioner of the present embodiment having the above-described configuration will be described. Here, the same operation as that of the conventional example will not be described in detail. Omit it.

FIG. 2 is a characteristic diagram for explaining the operation of the heat radiation control device for the heat storage type air conditioner in the first embodiment of the present invention.

In the load amount calculating device 14, the instantaneous load amount predicting means 10 therein predicts the curve A, and the all-day load amount calculating means 12 calculates the area surrounded by the points BCDE. The maximum load amount calculation means 13 finds the point F.

In the schedule operation setting device 21, the point G is calculated by the heat source functional force calculating means 15 at maximum load among them,
The calorific value calculation first means 16 calculates the area surrounded by the points BGHE. In the calorie calculation second means 17, point GIJ and point H
The areas of two triangles surrounded by KJ are calculated, and points I and J are calculated so that the areas of the two triangles are equal. The instantaneous heat source functional force calculation first means 18 represents the line segment IJ and the line segment JK by a linear expression. The instantaneous heat source device operating number calculation first means 19 determines the operating number of the heat source device 2 by dividing the value that can be taken by this linear expression by the capacity of one heat source device and rounding it off, and the instantaneous heat storage tank capacity calculating means 20 instantaneously First heat source functional force calculation means 1 from the output value of the load amount prediction means 10
By reducing the output value of 8, the capacity of the heat storage tank can be calculated.

As described above, according to the first embodiment, the maximum load heat source functional force calculating means 15 and the heat quantity calculating second means 1
Since 7 is provided, it is possible to level the maximum load load, prevent insufficient heat storage, and use up the amount of heat storage.

Next, regarding the second, third and fourth embodiments,
Although the description will be given, the same components as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

Regarding the configuration of the second embodiment of the present invention,
The calorie calculation third means 22 is replaced with the calorie calculation second means 17.

FIG. 3 is a characteristic diagram for explaining the operation of the heat dissipation control device of the heat storage type air conditioner in the second embodiment of the present invention.

Here, the calorific value calculation third means 22 is set to the point FBI.
Two areas surrounded by J and the point FEKJ are obtained, and the points I and J are calculated so that the areas are equal.

For this reason, according to the second embodiment, since the heat quantity calculating third means 22 is provided, the usage quantity of the heat storage quantity is divided into equal parts mainly at the maximum load, and the accuracy of using up the heat storage quantity is further improved. To do.

Regarding the configuration of the third embodiment of the present invention,
The instantaneous heat source device operating number calculation second means 23 is replaced with the instantaneous heat source device operating number calculation first means 19.

FIG. 4 is a characteristic diagram for explaining the operation of the heat dissipation control device of the heat storage type air conditioner in the third embodiment of the present invention.

Here, in the instantaneous heat source unit operating number calculating second means 23, the line segment IJ is divided by the ability of one heat source unit to round up the fraction, and the line segment JK is divided by the ability of one heat source unit. The result is rounded down.

For this reason, according to the third embodiment, since the instantaneous heat source unit operating number calculating second means 23 is provided, the number of heat source units increases before the maximum load, and the heat storage amount becomes larger than the maximum load. A large amount remains, which has the effect of preventing heat storage shortage.

Regarding the configuration of the fourth embodiment of the present invention,
The instantaneous heat source functional force calculation second means 24 is replaced with the instantaneous heat source functional force calculation first means 18.

FIG. 5 is a characteristic diagram for explaining the operation of the heat dissipation control device for the heat storage type air conditioner in the fourth embodiment of the present invention.

In the instantaneous heat source functional force calculation second means 24, the area obtained by the instantaneous heat source functional force calculation first means 18, for example,
Before the maximum load, a quadrangle LMNJ having the same area as the area surrounded by the point GIJ is obtained, and the maximum load side is made equal to the heat source functional force at the maximum load, that is, the heat source machine's capability is the line segment IM and the line segment LJ. To calculate.

Therefore, according to the fourth embodiment, since the instantaneous heat source functional force calculation second means 24 is provided, the number of heat source machines increases near the maximum load, and the maximum load load can be further leveled. There is an effect.

[0040]

As is apparent from the embodiments described above, the present invention provides a maximum load heat source functional force calculating means for reducing the maximum extraction capacity of the heat storage tank from the maximum load amount, and a maximum load heat source functional force value for the indoor unit. A calorific value calculation first means for subtracting the result of multiplying the operating time of the machine from the total daily load, and a calorific value that divides the calorific value into two equal parts centering on the maximum load by subtracting the value calculated by the calorific value calculation first means from the current heat storage amount Calculation second means, instantaneous heat source functional force calculation first means for calculating a linear expression from the value calculated by the calorific value calculation second means, and instantaneous heat source functional force value divided by the capacity of one heat source machine and rounded off. Since the schedule operation setting device including the first means for calculating the number of operating heat source machines and the instantaneous heat storage tank capacity calculating means for subtracting the instantaneous heat source functional force value from the instantaneous load amount predicted value is provided, the maximum load load is leveled. And prevent shortage of heat storage In addition it is possible to use up the heat storage amount.

Further, since the third means for calculating the amount of heat is provided so that the amount of heat storage used becomes equal mainly at the time of maximum load, the amount of heat storage used is divided equally around the time of maximum load. Therefore, the accuracy of using up the heat storage amount is further improved.

Also, rounding up before the maximum load,
Since the second means for calculating the number of operating heat source units by rounding down the heat source units is provided after that, the number of heat source units increases before the maximum load, and the heat storage amount becomes greater than the maximum load. A large amount remains, which has the effect of preventing heat storage shortage.

Further, a second means for calculating instantaneous heat source functional force for calculating a quadrangle having the same area as the area calculated by the heat amount calculating second means and making the maximum load side equal to the maximum load heat source functional force is provided. Therefore, the number of heat source machines increases near the time of maximum load, and there is an effect that the maximum load load can be further leveled.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a heat dissipation control device for a heat storage type air conditioner according to a first embodiment of the present invention.

FIG. 2 is a characteristic diagram for explaining the operation of the heat storage type air conditioner of the same embodiment.

FIG. 3 is a characteristic diagram for explaining the operation of the heat storage type air conditioner in the second embodiment of the present invention.

FIG. 4 is a characteristic diagram for explaining the operation of the heat storage type air conditioner in the third embodiment of the present invention.

FIG. 5 is a characteristic diagram for explaining the operation of the heat storage type air conditioner in the fourth example of the present invention.

FIG. 6 is a schematic configuration diagram of a heat radiation control device for a conventional heat storage type air conditioner.

[Explanation of symbols]

2 heat source machine 3 heat storage tank 5 Refrigerant transfer pump 6 indoor units 7 present heat storage amount calculation means 10 Instantaneous load prediction means 12 All-day load calculation means 13 Maximum load calculation means 14 Load amount calculation device 15 Heat source functional power calculation means at maximum load 16 First means of calorific value calculation 17 calorie calculation second means 18 Instantaneous heat source functional force calculation first means 19 First means for calculating the number of operating instantaneous heat source units 20 Instantaneous heat storage tank capacity calculation means 21 Schedule operation setting device

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Yoshihide Sugita 2-30 Kanda Jinbocho, Chiyoda-ku, Tokyo Tokyo Electric Power Co., Inc. Research Laboratory (56) Reference JP-A-57-210230 (JP, A) Kaihei 3-91658 (JP, A) JP 5-196277 (JP, A) JP 6-81599 (JP, A) JP 1-285732 (JP, A) (58) Fields investigated ( Int.Cl. ⁷ , DB name) F24F 11/02 102

Claims (4)

(57) [Claims] 1. A plurality of heat source units, a primary side refrigeration cycle in which the heat source units and a heat storage tank are arranged in series, a secondary side heat exchange section in the heat storage tank, a refrigerant transfer pump, and a plurality of indoor units. A heat storage system consisting of a secondary side refrigeration cycle in which and are connected in an annular manner, and an instantaneous load amount prediction means for predicting the load pattern of the indoor unit and calculating an instantaneous value of the load amount using the outside air temperature and the like as parameters. All-day load amount calculating means for summing the values calculated by the instantaneous load amount predicting means over all operating hours of the indoor unit, and maximum load amount calculating for calculating the maximum value of the values calculated by the instantaneous load amount predicting means Means for calculating the amount of heat stored at present, and a heat source function at maximum load for subtracting the maximum extraction capacity of the heat storage tank from the value calculated by the maximum load amount calculating means. Force calculation means, Heat quantity calculation first means for subtracting the result of multiplying the value calculated by the heat source functional power calculation means under heavy load by the operating time of the indoor unit from the value calculated by the all-day load quantity calculation means, and the current heat storage quantity calculation means Calculated by the heat quantity calculation second means for subtracting the value calculated by the heat quantity calculation first means from the value calculated in 1. to divide the heat quantity into two equal parts around the maximum load, and the present time and the maximum load quantity calculation means. Instantaneous heat source functional force calculation for calculating a linear expression that passes through the maximum load point on the hypotenuse of a right-angled triangle in which the area enclosed by the values has a right angle and the area calculated by the heat amount calculation second means is equal Instantaneous heat source device operating number calculation for dividing the output value of the first means and the instantaneous heat source functional force calculation means by the capacity of one heat source machine and rounding off the decimal point. Instantaneous from the output value of the instantaneous load amount prediction means. The output value of the heat source functional force calculation means Thermal storage type air conditioner which is characterized in that a scheduled operation setting device comprising a Jill instantaneous heat storage tank capacity calculating means. 2. A plurality of heat source units, a primary side refrigeration cycle in which the heat source units and a heat storage tank are arranged in series, a secondary side heat exchange section in the heat storage tank, a refrigerant transfer pump, and a plurality of indoor units. A heat storage system consisting of a secondary side refrigeration cycle in which and are connected in an annular manner, and an instantaneous load amount prediction means for predicting the load pattern of the indoor unit and calculating an instantaneous value of the load amount using the outside air temperature and the like as parameters. All-day load amount calculating means for summing the values calculated by the instantaneous load amount predicting means over all operating hours of the indoor unit, and maximum load amount calculating for calculating the maximum value of the values calculated by the instantaneous load amount predicting means Means for calculating the amount of heat stored at present, and a heat source function at maximum load for subtracting the maximum extraction capacity of the heat storage tank from the value calculated by the maximum load amount calculating means. Force calculation means, Heat quantity calculation first means for subtracting the result of multiplying the value calculated by the heat source functional power calculation means under heavy load by the operating time of the indoor unit from the value calculated by the all-day load quantity calculation means, and the current heat storage quantity calculation means A calorific value calculating third means for subtracting the value calculated by the calorific value calculating first means from the value calculated in step 1 and dividing the value so that the amount of heat storage used becomes equal around the maximum load,
The maximum load point is the hypotenuse of a right triangle in which the area of a right triangle whose angle is a right angle surrounded by the value calculated by the maximum load calculation means and the value calculated by the heat calculation second means are equal. The first means for calculating the instantaneous heat source functional force for calculating a linear equation passing through and the first means for calculating the operating number of instantaneous heat source devices by dividing the output value of the instantaneous heat source functional force calculating means by the capacity of one heat source machine and rounding off to the nearest whole number. A heat storage type air conditioner comprising a schedule operation setting device comprising: an instantaneous heat storage tank capacity calculation means for subtracting an output value of the instantaneous heat source functional force calculation means from an output value of the instantaneous load amount prediction means. 3. A plurality of heat source units, a primary side refrigeration cycle in which the heat source units and a heat storage tank are arranged in series, a secondary side heat exchange section in the heat storage tank, a refrigerant transfer pump, and a plurality of indoor units. A heat storage system consisting of a secondary side refrigeration cycle in which and are connected in an annular manner, and an instantaneous load amount prediction means for predicting the load pattern of the indoor unit and calculating an instantaneous value of the load amount using the outside air temperature and the like as parameters. All-day load amount calculating means for summing the values calculated by the instantaneous load amount predicting means over all operating hours of the indoor unit, and maximum load amount calculating for calculating the maximum value of the values calculated by the instantaneous load amount predicting means Means for calculating the amount of heat stored at present, and a heat source function at maximum load for subtracting the maximum extraction capacity of the heat storage tank from the value calculated by the maximum load amount calculating means. Force calculation means, Heat quantity calculation first means for subtracting the result of multiplying the value calculated by the heat source functional power calculation means under heavy load by the operating time of the indoor unit from the value calculated by the all-day load quantity calculation means, and the current heat storage quantity calculation means Calculated by the heat quantity calculation second means for subtracting the value calculated by the heat quantity calculation first means from the value calculated in 1. to divide the heat quantity into two equal parts around the maximum load, and the present time and the maximum load quantity calculation means. Instantaneous heat source functional force calculation for calculating a linear expression that passes through the maximum load point on the hypotenuse of a right-angled triangle in which the area enclosed by the values has a right angle and the area calculated by the heat amount calculation second means is equal Output value of the first means, instantaneous heat source machine operation number calculation means for rounding up the decimal point before the maximum load, and rounding down the decimal point for the second time, and the instantaneous load amount predicting means Instant heat from Thermal storage type air conditioner which is characterized in that a scheduled operation setting device consisting of an instantaneous heat storage tank capacity calculating means for subtracting the output value of the function force calculation means. 4. A plurality of heat source units, a primary side refrigeration cycle in which the heat source units and a heat storage tank are arranged in series, a secondary side heat exchange section in the heat storage tank, a refrigerant transfer pump, and a plurality of indoor units. A heat storage system consisting of a secondary side refrigeration cycle in which and are connected in an annular manner, and an instantaneous load amount prediction means for predicting the load pattern of the indoor unit and calculating an instantaneous value of the load amount using the outside air temperature and the like as parameters. All-day load amount calculating means for summing the values calculated by the instantaneous load amount predicting means over all operating hours of the indoor unit, and maximum load amount calculating for calculating the maximum value of the values calculated by the instantaneous load amount predicting means Means for calculating the amount of heat stored at present, and a heat source function at maximum load for subtracting the maximum extraction capacity of the heat storage tank from the value calculated by the maximum load amount calculating means. Force calculation means, Heat quantity calculation first means for subtracting the result of multiplying the value calculated by the heat source functional power calculation means under heavy load by the operating time of the indoor unit from the value calculated by the all-day load quantity calculation means, and the current heat storage quantity calculation means From the value calculated in, the area of a right-angled triangle having a right angle between the present time and the value calculated by the maximum load amount calculation means is equal to the right-angled triangle in which the value calculated by the heat amount calculation second means is equal. A heat quantity calculation second means for dividing a heat quantity into two equal parts centered at the time of maximum load by subtracting the value calculated by the instantaneous heat source functional force calculation first means for calculating a linear expression on the hypotenuse and passing through the maximum load point; Heat source functional force calculation The area obtained by the first means is made equal, and the side that passes through the maximum load point is made a rectangle, and the heat source functional force is set so that the side closer to the maximum load is the same as the heat source functional force at maximum load. Instantaneous heat source functional force calculation Means and the instantaneous heat source functional force calculating means, the output value of the instantaneous heat source functional force calculating means is divided by the capacity of one heat source machine, and the decimal point is rounded off. A heat storage type air conditioner comprising a schedule operation setting device comprising an instantaneous heat storage tank capacity calculation means for reducing the output value of the force calculation means.