JP2000346428A - Thermal storage type air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To conduct a thermal storage operation for cooling or a thermal storage operation for heating suitably in response to a using state by providing a control means for automatically deciding whether the operation for cooling or the operation for heating is conducted in a thermal storage time zone based on predetermined conditions. SOLUTION: The thermal storage type air conditioner comprises a selection switch 8 for a thermal storage operation for cooling/a thermal storage operation for heating, and an automatic deciding method selection switch 9. An atmospheric temperature detecting means 10 detects an atmospheric temperature around an outdoor unit 1, and a thermal storage amount detecting means 11 detects a thermal storage amount of a thermal storage medium in a thermal storage tank 2. An indoor temperature detecting means 12 detects an air temperature in a room where an indoor unit is installed, and an operating capacity detecting means 13 detects a cooling operation capacity and a heating operation capacity of the unit 3 in an air conditioning time zone. A control means 14 is connected to the switches 8, 9, the detecting means 10 to 13 and the like to automatically decide the thermal storage operation for cooling or the thermal storage operation for heating in the storage time zone.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a regenerative air conditioner, and more particularly to a regenerative air conditioner which performs a cooling heat storage operation for cooling a heat storage medium or a heating heat storage operation for heating a heat storage medium during a predetermined heat storage time zone. The present invention relates to a regenerative air conditioner that automatically determines whether to perform the operation.

[0002]

2. Description of the Related Art FIG. 7 shows a schematic configuration of a conventional regenerative air conditioner. In the figure, 1 is an outdoor unit, 2 is a heat storage tank containing water as a heat storage medium, 3 is an indoor unit, 4 is an indoor unit operation switch, 5 is a refrigerant pipe connecting the outdoor unit 1 and the heat storage tank 2, and 6 is heat storage. Refrigerant piping connecting the tank 2 and the indoor unit 3, and reference numeral 7 denotes a cooling heat storage operation / heating heat storage operation switch.

In the regenerative air conditioner shown in FIG. 7, during a preset heat storage time zone (mainly at night), a cooling heat storage operation for cooling the water in the heat storage tank 2 to make cold water or ice is performed, Whether or not to perform the heating heat storage operation for heating the water in the tank 2 to make it hot water is set by manually operating the cooling heat storage operation / heating heat storage operation switch 7.

[0004]

As described above, in the conventional thermal storage type air conditioner, it is necessary to manually operate the thermal storage operation for cooling or the thermal storage operation for heating during a preset thermal storage time zone. Had been switched by. Therefore, it is difficult to perform the heat storage operation for cooling or the heat storage operation for heating during the heat storage time properly according to the situation where the heat storage type air conditioner is actually used. Operation to store hot water for heating during the cooling season when operation to store cold water (ice) is required, or operation to store cold water (ice) for cooling during the heating season when operation to store hot water for heating is required There was a problem that would be. In addition, there is a problem that the energy loss in the heat storage tank is increased by alternately repeating the operation of storing cooling water (ice) for cooling and the operation of storing hot water for heating in the heat storage tank. In addition, there is a problem that the heat storage amount of the heat storage tank becomes insufficient during the air time period due to heat radiation loss from the heat storage tank to the outside air.

The present invention has been made in view of the above problems, and automatically determines whether to perform a cooling heat storage operation or a heating heat storage operation during a heat storage time zone based on predetermined conditions. Accordingly, it is an object of the present invention to provide a heat storage type air conditioner that can appropriately perform a heat storage operation for cooling or a heat storage operation for heating according to a use situation.

[0006]

In order to achieve the above object, the present invention provides a heat storage tank for cooling which includes a heat storage tank containing a heat storage medium and cools the heat storage medium in the heat storage tank during a predetermined heat storage time zone. While performing the heating or the heat storage operation for heating the heat storage medium in the heat storage tank, and performing the cooling operation or the heating operation using the heat stored in the heat storage medium in the heat storage tank during a preset air conditioning time period. In thermal storage type air conditioners,
The control device is provided with control means for automatically determining whether to perform the cooling heat storage operation or the heating heat storage operation during the heat storage time zone based on predetermined conditions.

Further, in the above configuration, it is possible to manually set whether to perform the cooling heat storage operation or the heating heat storage operation during the heat storage time zone.

[0008] In addition to the above-mentioned configuration, an outside air temperature detecting means is provided, and the control means determines whether to perform the cooling heat storage operation or the heating heat storage operation during the heat storage time zone based on the temperature detected by the outside air temperature detection means. Is determined.

[0009] In addition to the above configuration, there is provided operating capacity detecting means for respectively detecting a cooling operating capacity and a heating operating capacity of the indoor unit during an air-conditioning time zone, and the control means includes a cooling operating capacity detected by the operating capacity detecting means. Based on a comparison between the capacity and the heating operation capacity, it is configured to determine whether to perform the cooling heat storage operation or the heating heat storage operation during the heat storage time zone.

[0010] In addition to the above-mentioned configuration, there is provided first time counting means for counting the accumulated time in the cooling operation mode and the accumulated time in the heating operation mode in the air-conditioning time zone, respectively. It is configured to determine whether to perform the cooling heat storage operation or the heating heat storage operation in the heat storage time zone based on a comparison between the integrated time of the cooling operation mode and the integrated time of the heating operation mode measured by the timer. Things.

[0011] In addition to the above-mentioned configuration, there is provided a second time measuring means for measuring an accumulated operating time of the compressor in the cooling operation mode and an accumulated operating time of the compressor in the heating operation mode in the air conditioning time zone, respectively. The means is based on a comparison between the compressor integrated operation time in the cooling operation mode and the compressor integrated operation time in the heating operation mode measured by the second timer means.
It is configured to determine whether to perform the cooling heat storage operation or the heating heat storage operation during the heat storage time zone.

Further, in addition to the above configuration, a heat storage amount detecting means for detecting a heat storage amount of the heat storage medium in the heat storage tank, an indoor temperature detecting means for detecting an air temperature in a room where the indoor unit is set, and an air conditioning time A third method of measuring the accumulated time of the cooling operation using the heat storage and the accumulated time of the heating operation using the heat storage in the zone, respectively
Control means is set to the cooling operation mode during the air-conditioning period, and when the detected temperature of the indoor temperature detecting means is equal to or higher than a predetermined temperature, the detected heat storage amount of the heat storage amount detecting means If the amount is available for cooling operation, heat storage cooling operation is performed.If the amount of heat stored by the heat storage amount detection means is not available for cooling operation, heat storage non-use cooling operation is performed. When the heating operation mode is set for the zone and the detected temperature of the indoor temperature detecting means is equal to or lower than the predetermined temperature, the heat storage use is performed if the detected heat storage amount of the heat storage amount detecting means is an amount usable for the heating operation. When the heating operation is performed, if the heat storage amount detected by the heat storage amount detection unit is an amount that cannot be used for the heating operation, the cooling operation that does not use the heat storage is performed, and the accumulated time of the cooling operation that uses the heat storage measured by the third timer unit And integration of heating operation using heat storage Based on a comparison between, in which is configured to determine whether to perform the heating heat-storage operation or perform cooling heat storage operation in the heat storage time period.

[0013] In each of the above structures, the control means includes:
When the operation mode in the heat storage time zone is switched from the cooling heat storage operation to the heating heat storage operation, or when the heat storage operation mode switching decision to switch from the heating heat storage operation to the cooling heat storage operation is performed, the heat storage operation mode is actually switched. The number of times of the heat storage operation mode switching decision is counted while holding, and when the counted number of the heat storage operation mode switching decisions reaches a predetermined number, the heat storage operation mode switching is executed. is there.

Further, in each of the above structures, a heat radiation loss detecting means for detecting a heat radiation loss from the heat storage tank to the outside air is provided, and the heat radiation loss detected by the heat radiation loss detecting means during the heat storage time period is larger than a predetermined amount. In this case, the heat storage operation for cooling or the heat storage operation for heating is performed.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. Embodiment 1 of the Invention FIG.
1 shows a schematic configuration of a heat storage type air conditioner according to this embodiment. In the figure, 1 is an outdoor unit having a compressor (not shown) for compressing a refrigerant, 2 is a heat storage tank containing a heat storage medium (for example, water) for storing heat, 3 is an indoor unit, 4 is an indoor unit. An operation switch, 5 is a refrigerant pipe connecting the outdoor unit 1 and the heat storage tank 2, 6 is a refrigerant pipe connecting the heat storage tank 2 and the indoor unit 3, and 8 is a heat storage operation for cooling / automatic determination of a heat storage operation for heating / A manual determination selection switch, 9 is an automatic determination method selection switch for cooling heat storage operation / heating heat storage operation, 10 is an outside air temperature detecting means for detecting an outside air temperature around the outdoor unit 1, and 11 is a heat storage medium in the heat storage tank 2. A heat storage amount detecting means for detecting the heat storage amount, 12 is an indoor temperature detecting means for detecting an air temperature in the room where the indoor unit 3 is installed, and 13 is a cooling operation capacity and a heating operation capacity of the indoor unit 3 in an air conditioning time zone. The operating capacity detection means to detect each is shown. . Reference numeral 14 denotes each of the switches (reference numerals 8 and 9) and each of the detection means (reference numerals 10 and 9).
13), etc., by a signal line (not shown), and is a control means for automatically determining whether to perform the cooling heat storage operation or the heating heat storage operation during the heat storage time zone.

Although illustration and detailed description are omitted,
The outdoor unit 1 is provided with an outdoor heat exchanger, the heat storage tank 2 is provided with a heat storage heat exchanger, and the indoor unit 3 is provided with an indoor heat exchanger. These heat exchangers, compressors and the like are provided. A known refrigerant circuit is configured by being connected by a refrigerant pipe. Then, during a preset heat storage time zone (mainly at night), a heat storage operation for storing heat obtained through the outdoor heat exchanger in the heat storage medium in the heat storage tank 2 (that is, a cooling heat storage operation for cooling the heat storage medium, Or a heat storage operation for heating to heat the heat storage medium), and in an air conditioning time period (mainly in the daytime) outside the heat storage time period, the heat stored in the heat storage medium is taken out through the heat storage heat exchanger for air conditioning. A cooling operation using heat storage or a heating operation using heat storage to be used is performed. Further, depending on the situation, a heat storage non-use cooling operation or a heat storage non-use heating operation in which air conditioning is directly performed using heat from the outdoor heat exchanger without using heat storage can be performed.

Although not shown, the regenerative air conditioner includes first time counting means for counting the integrated time in the cooling operation mode and the integrated time in the heating operation mode in the air conditioning time zone, and an air conditioning time zone. Second timer means for measuring the compressor integrated operating time in the cooling operation mode and the compressor integrated operating time in the heating operation mode, respectively, and the integrated time of the heat storage cooling operation and the heat storage heating operation in the air conditioning time zone. And three types of time measuring means (timers), each of which is a third time measuring means for measuring the accumulated time of the time.

FIG. 2 is a flowchart showing a method of determining the operation mode of the regenerative air conditioner of FIG. 1 during the air conditioning period. Hereinafter, according to this flowchart, FIG.
The procedure for determining the operation mode of the regenerative air conditioner during the air conditioning time period will be specifically described. First, in step S1, the signal from the indoor unit operation switch 4 is determined, and "cooling O
In the case of "N", the process proceeds to step S2, in the case of "heating ON", the process proceeds to step S4, and in the case of "OFF", the process proceeds to step S6, and the operation mode is set to the "stop mode". Step S
In 2, when the indoor temperature detected by the indoor temperature detecting means 12 is equal to or higher than the predetermined temperature and it is necessary to operate the compressor of the outdoor unit 1 to perform the cooling operation in the indoor unit 3, the process proceeds to step S3. On the other hand, when the indoor temperature detected by the indoor temperature detecting means 12 is equal to or lower than the predetermined temperature and it is not necessary to perform the cooling operation of the indoor unit 3, the process proceeds to step S9, and the operation mode is set to the "cooling thermo OFF mode". In step S3, when the heat storage amount of the heat storage medium in the heat storage tank 2 detected by the heat storage amount detection means 11 is equal to or more than a predetermined value and the heat storage can be used for the cooling operation, the process proceeds to step S7 to change the operation mode to " If the heat storage amount of the heat storage medium in the heat storage tank 2 detected by the heat storage amount detection means 11 is equal to or less than a predetermined value and the heat storage cannot be used for the cooling operation, the process proceeds to step S8. Then, the operation mode is set to “cooling mode that does not use heat storage”.

Further, the steps S1 to S4
In step S5, if the indoor temperature detected by the indoor temperature detecting means 12 is equal to or lower than the predetermined temperature and the indoor unit 3 needs to operate the compressor of the outdoor unit 1 to perform the heating operation. To the room temperature detecting means 12
If the indoor temperature detected by the above is not less than the predetermined temperature and it is not necessary to perform the heating operation of the indoor unit 3, Step S12
And the operation mode is set to the “heating thermo OFF mode”. In step S5, if the heat storage amount of the heat storage medium in the heat storage tank 2 detected by the heat storage amount detecting means 11 is equal to or more than a predetermined value and the heat storage can be used for the heating operation, step S5 is performed.
Proceeding to 10, the operation mode is set to the "heat storage utilizing heating mode". On the other hand, the heat storage amount of the heat storage medium in the heat storage tank 2 detected by the heat storage amount detection means 11 is equal to or less than a predetermined value, and the heat storage cannot be used for the heating operation. If, the operation proceeds to step S11, and the operation mode is set to the "heat storage non-use heating mode".

Next, in the regenerative air conditioner of FIG. 1, a method in which the control means 14 automatically determines whether to perform the cooling heat storage operation or the heating heat storage operation during the heat storage time zone will be described. In the air conditioner, it is possible to automatically determine whether to perform the cooling heat storage operation or the heating heat storage operation in the heat storage time zone in five methods described below as Pattern 1 to Pattern 5. ing. In the following description, when referring to the integrated operating capacity or the integrated operating time, an integrated value per predetermined integration period, such as one day or one week, is used.

First, in the method of pattern 1, the outside air temperature detecting means 10 detects the outside air temperature around the outdoor unit 1 during the air conditioning period, and if the average value of the detected outside air temperature is equal to or more than a predetermined value, the heat storage time The operation mode of the regenerative air conditioner in the zone is referred to as “cooling heat storage mode”, and if it is equal to or less than a predetermined value, the operation mode of the regenerative air conditioner in the heat storage time zone is referred to as “heating heat storage mode”.

Next, in the method of Pattern 2, the integrated value of the cooling operation capacity of the indoor unit 3 during the air conditioning time period detected by the operation capacity detection means 13 is set to A, and the heating operation capacity of the indoor unit 3 during the air conditioning time period is set. Is B. If the ratio of A and B (A / B) is equal to or greater than a predetermined value, the operation mode of the regenerative air conditioner in the heat storage time zone is set to “cooling heat storage mode”, and the ratio of A and B is set to the predetermined value. In the following cases, the operation mode of the regenerative air conditioner in the heat storage time zone is referred to as “heating heat storage mode”.

In the method of Pattern 3, the first timer means determines that the operation mode of the regenerative air conditioner in the air-conditioning time period is the "cooling operation mode" (that is, in step S1 of FIG. 2). (When the signal from the indoor unit operation switch 4 is determined to be "cooling ON" and any one of the heat storage use cooling mode, the heat storage non-use cooling mode, and the cooling thermo OFF mode is selected), and the air conditioning time When the operation mode in the zone is the “heating operation mode” (that is, the signal from the indoor unit operation switch 4 is determined to be “heating ON” in step S1 of FIG. 2 and the heat storage use heating mode and the heat storage non-use heating mode , Heating thermo O
(When any of the FF modes is selected). When the measured ratio of C and D is equal to or more than a predetermined value, the operation mode of the regenerative air conditioner in the heat storage time zone is set to “cooling heat storage mode”, and the ratio of C and D is equal to or less than the predetermined value. In the case of, the operation mode of the regenerative air conditioner in the heat storage time zone is set to “heating heat storage mode”.

Further, in the method of pattern 4, the second
If the operation mode of the regenerative air conditioner in the air-conditioning time period is the “cooling operation mode” and the compressor is operating (that is, it is necessary to perform the cooling operation of the indoor unit in step S2 of FIG. 2) (When either the heat storage cooling mode or the heat non-cooling cooling mode is selected), and the operation mode of the regenerative air conditioner in the air conditioning time zone is the “heating operation mode”. In addition, when the compressor is operating (that is, when it is determined that the indoor unit needs to perform the heating operation in step S4 of FIG. 2, either the heat storage use heating mode or the heat storage non-use heating mode is selected) ) Is counted. When the measured ratio of E and F is equal to or more than a predetermined value, the operation mode of the regenerative air conditioner in the heat storage time zone is set to “cooling heat storage mode”, and the ratio of E and F is equal to or less than the predetermined value. In the case of, the operation mode of the regenerative air conditioner in the heat storage time zone is set to “heating heat storage mode”.

Further, in the method of Pattern 5, the third timer means that the operation mode of the regenerative air conditioner in the air-conditioning time period is “cooling operation mode” and the heat storage tank 2
The accumulated time G in the case where the heat storage in the inside is used for the cooling operation (that is, in the case where the heat storage use cooling mode is selected as a result of the determination that the heat storage is available for the cooling operation in step S3 of FIG. 2), and When the operation mode of the regenerative air conditioner in the air conditioning time period is the “heating operation mode” and the heat storage in the heat storage tank 2 is used for the heating operation (that is, the heat storage is used for the heating operation in step S5 of FIG. 2). (When the heat storage heating mode is selected as a result of the determination that the heating is possible), the integrated time H is counted. When the measured ratio of G and H is equal to or more than a predetermined value, the operation mode of the regenerative air conditioner in the heat storage time zone is set to “cooling heat storage mode”, and the ratio of G and H is equal to or less than the predetermined value. In the case of, the operation mode of the regenerative air conditioner in the heat storage time zone is set to “heating heat storage mode”.

Next, based on the method for automatically determining the heat storage operation for cooling / heat storage operation for heating described above as patterns 1 to 5, the heat storage operation for cooling in the heat storage air conditioner in FIG. A method of selecting the method of determining the heat storage operation for heating will be described with reference to FIG. That is, FIG. 3 is a flowchart showing a procedure for selecting the heat storage operation mode determination method. As shown in FIG. 3, first, in step S13, the automatic heat storage operation / heating heat storage operation automatic determination / manual determination selection switch 8 is selected. Is determined, the process proceeds to step S14 if the determination is "automatic determination", while the process proceeds to step S15 if the determination is "manual determination".
Then, it is determined whether the operation mode in the heat storage time zone is the cooling heat storage mode or the heating heat storage mode by manual setting of a setting switch (not shown).

When the process proceeds from step S13 to step S14, a signal from the automatic heat storage operation for cooling / heating operation selection switch 9 is determined, and the process proceeds to each step according to the determination result. . That is,
In the case of the pattern 1, the process proceeds to step S16, and the determination as to whether the operation mode in the heat storage time zone is the cooling heat storage mode or the heating heat storage mode is made by the method of the pattern 1 based on the detected temperature of the outside air temperature detecting means 10. Shall be.
In the case of the pattern 2, the process proceeds to step S17, and the determination as to whether the operation mode in the heat storage time period is the cooling heat storage mode or the heating heat storage mode is made based on the detected capacity of the pattern 2 based on the detected capacity of the operating capacity detecting means 13. It depends on the method. In the case of the pattern 3, the process proceeds to step S18, and the determination as to whether the operation mode in the heat storage time zone is the cooling heat storage mode or the heating heat storage mode is made based on the pattern 3 based on the time measured by the first time measuring means. It depends on the method. Further, in the case of the pattern 4, the process proceeds to step S19, and the determination as to whether the operation mode in the heat storage time zone is the cooling heat storage mode or the heating heat storage mode is based on the pattern 4 based on the clocking time of the second clocking means. It depends on the method. Furthermore, in the case of pattern 5, step S
20, the determination of whether the operation mode in the heat storage time zone is the cooling heat storage mode or the heating heat storage mode is
The method is based on the method of pattern 5 based on the time measured by the third time measuring means.

Embodiment 2 of the Invention FIG. 4 shows a schematic configuration of a regenerative air conditioner according to the present embodiment. In the drawing, 1 is an outdoor unit, 2 is a heat storage tank, 3 is an indoor unit, 4 is an indoor unit operation switch, 5 is a refrigerant pipe connecting the outdoor unit 1 and the heat storage tank 2, and 6 is a heat storage tank 2 and the indoor unit 3. The refrigerant pipe 14 to be connected is control means. Further, 15 switches from the heat storage operation for cooling to the heat storage operation for heating, or switches from the heat storage operation for heating to the heat storage operation for cooling.
When the control means 14 determines the operation mode switching in the heat storage time zone, the number of times of switching determination is counted. In this embodiment, the method in which the control means 14 automatically determines whether to perform the cooling heat storage operation or the heating heat storage operation during the heat storage time zone is the same as in the first embodiment, and the respective switches ( Symbols 8 and 9)
And the detection means (reference numerals 10 to 13) are the same as in the first embodiment, but their illustration and description are omitted.

FIG. 5 is a flowchart showing a control method in the heat storage time zone of the heat storage type air conditioner of FIG.
Hereinafter, the control in this embodiment will be specifically described according to this flowchart. First, in step S21, it is determined whether the operation mode in the heat storage time zone automatically determined by any of the methods shown as patterns 1 to 5 in the first embodiment is “cooling heat storage operation” or “heating heat storage operation”. If it is determined that the heat storage operation for cooling is determined, the process proceeds to step S22. If it is determined that the heat storage operation for heating is performed, the process proceeds to step S27. In step S22, the operation mode in the previous heat storage time zone is determined. If the operation mode is the cooling heat storage operation, the process proceeds to step S25, and the operation mode is set to the "cooling heat storage mode". On the other hand, step S22
If the operation mode in the previous heat storage time period was the heat storage operation for heating, the process proceeds to step S23, where the switching determination number counting means 15 has counted. "1" is added to the number of times of switching from the heat storage operation for cooling to the heat storage operation for heating in the heat storage operation mode, and the process proceeds to step S24. In step S24, the number of heat storage operation mode switching determinations counted by the switching determination number counting means 15 is compared with a preset predetermined number. If the number of switching determinations is equal to or greater than the predetermined number, step S2 is performed.
Proceeding to step 5, the operation mode is set to "cooling heat storage mode". On the other hand, if the number of times is equal to or less than the predetermined number, the process proceeds to step S26 to set the operation mode to "heating heat storage mode".

Further, steps S21 to S27
If the operation proceeds to step S26, the operation mode in the previous heat storage time zone is determined. If the operation mode is the heat storage operation for heating, the process proceeds to step S26 to set the operation mode to the "heat storage mode for heating". On the other hand, if the operation mode in the previous heat storage time period was the cooling heat storage operation in step S27, the process proceeds to step S28, in which the switching determination number counting means 15 has counted the heating heat storage operation in the heat storage operation mode. , "1" is added to the number of times of switching to the cooling heat storage operation, and the process proceeds to step S29. Step S2
In step 9, if the number of switching decisions of the heat storage operation mode counted by the switching determination number counting means 15 is equal to or greater than a predetermined number of times set in advance, the process proceeds to step S26, and the operation mode is set to the “heat storage mode for heating”. ,on the other hand,
If the number is equal to or less than the predetermined number, the process proceeds to step S25, and the operation mode is set to “cooling heat storage mode”.

By performing the above-described control, even when the control means 14 determines the switching of the heat storage operation mode, the switching of the heat storage operation mode in the actual operation is performed as long as the number of switching decisions is not more than the predetermined number. Is suspended, and the operation in the same operation mode as the previous heat storage time zone is performed. Then, the heat storage operation mode is actually switched only when the number of heat storage operation mode switching decisions becomes equal to or greater than a predetermined number.

Embodiment 3 of the Invention FIG. 6 shows a schematic configuration of a regenerative air conditioner according to the present embodiment. In the drawing, 1 is an outdoor unit, 2 is a heat storage tank, 3 is an indoor unit, 4 is an indoor unit operation switch, 5 is a refrigerant pipe connecting the outdoor unit 1 and the heat storage tank 2, and 6 is a heat storage tank 2 and the indoor unit 3. Refrigerant piping to be connected, 14 denotes control means, and 16 denotes heat radiation loss detecting means for detecting heat radiation loss from the heat storage tank 2 to the outside air.

Next, the operation of this embodiment will be described. In FIG. 6, the integrated value of the heat dissipation loss to the outside air when the internal temperature of the heat storage tank 2 (temperature of the heat storage medium) is lower than the ambient temperature of the heat storage tank 2 (outside air temperature) detected by the heat dissipation loss detecting means 16. Is I, and the integrated value of the heat dissipation loss to the outside air when the internal temperature of the heat storage tank 2 is higher than the ambient temperature of the heat storage tank 2 is J. When the value of I is equal to or more than a predetermined value and the ratio of I and J is equal to or more than a predetermined value, the heat storage operation for cooling is performed during the heat storage time zone, while the value of J is equal to or more than the predetermined value and I When the ratio of J and J is equal to or less than the predetermined value, the heat storage operation for heating is performed during the heat storage time zone.

[0034]

As described above, according to the regenerative air conditioner of the present invention, whether to perform the cooling heat storage operation or the heating heat storage operation during the heat storage time zone is automatically determined based on a predetermined condition. Switching control from the cooling heat storage operation in the cooling season to the heating heat storage operation in the heating season, or switching from the heating heat storage operation in the heating season to the cooling heat storage operation in the cooling season. The trouble of manual operation can be saved, and since the switching operation is forgotten, the heat storage operation for heating is performed during the cooling season, or the heat storage operation for cooling is performed during the heating season, and the heat storage cannot be used effectively. Such a situation can be avoided.

Further, it is possible to manually set whether to perform the cooling heat storage operation or the heating heat storage operation during the heat storage time zone. Therefore, the cooling heat storage operation or the heating heat storage operation is performed during the heat storage time zone. Can be flexibly selected according to the use condition of the regenerative air conditioner.

The control means is configured to determine whether to perform the cooling heat storage operation or the heating heat storage operation during the heat storage time period based on the temperature detected by the outside air temperature detecting means. Can perform the heat storage operation for cooling or the heat storage operation for heating that reflects the change in the air conditioner.Also, even if the indoor unit has not been operated for a long period of time during the air conditioning time, the heat storage operation for cooling should be performed during the heat storage time. It is possible to accurately determine whether to perform the heat storage operation.

Further, the control means determines whether to perform the cooling heat storage operation or the heating heat storage operation during the heat storage time zone based on a comparison between the cooling operation capacity and the heating operation capacity detected by the operation capacity detection means. If the air conditioning load of the room where the indoor unit is installed is larger, the cooling heat storage operation is performed during the heat storage time zone, and if the heating is larger, the heating heat storage operation is performed during the heat storage time zone. Like driving,
It becomes possible to perform a cooling heat storage operation or a heating heat storage operation reflecting the air conditioning load of the room where the indoor unit is installed.

Further, the control means determines whether to perform the cooling heat storage operation during the heat storage time zone based on the comparison between the cooling operation mode integration time and the heating operation mode integration time measured by the first timer means. Since it is configured to determine whether to perform the heat storage operation, for example, if the indoor unit user has set the indoor unit operation switch to “cooling ON” for a long time during the air conditioning time period, the cooling heat storage operation is performed during the heat storage time period. And "Heating ON"
If the time period is long, the cooling heat storage operation or the heating heat storage operation reflecting the intention of the indoor unit user can be performed, such as performing the heating heat storage operation during the heat storage time zone.

Further, the control means controls the cooling operation during the heat storage time zone based on a comparison between the compressor integrated operation time in the cooling operation mode and the compressor integrated operation time in the heating operation mode measured by the second timer means. It is configured to determine whether to perform the heat storage operation for heating or to perform the heat storage operation for heating. For example, the indoor unit user sets the indoor unit operation switch to “cooling O” during the air conditioning time zone.
N ", and when the room in which the indoor unit is installed has a high room temperature and it is actually necessary to perform the cooling operation, the heat storage operation for cooling is performed during the heat storage time period, while the indoor unit user operates the air conditioning time period. When the indoor unit operation switch is set to "heating ON", and the room where the indoor unit is installed has a low room temperature and it is necessary to actually perform the heating operation, the heat storage operation for heating is performed during the heat storage time zone. In addition, it becomes possible to perform a cooling heat storage operation or a heating heat storage operation that reflects both the air conditioning load of the room where the indoor unit is installed and the intention of the indoor unit user.

The control means determines whether to perform the cooling heat storage operation in the heat storage time zone based on a comparison between the accumulated time of the heat storage cooling operation and the accumulated time of the heat storage heating operation measured by the third timer. Since it is configured to determine whether to perform the heat storage operation for heating, if the time during which the heat storage is used for the cooling operation during the air conditioning time period is long, the heat storage operation for cooling is performed during the heat storage time period, and the air conditioning time period is set. If the time during which the heat storage is used for the heating operation is long, the heating heat storage operation is performed during the air conditioning time period, such as performing the heating heat storage operation during the heat storage time period. Can be performed.

Further, the control means switches the operation mode in the heat storage time period from the cooling heat storage operation to the heating heat storage operation, or determines whether to switch the heat storage operation mode from the heating heat storage operation to the cooling heat storage operation. Actually, the number of heat storage operation mode switching decisions is counted while suspending the switching of the heat storage operation mode, and the heat storage operation mode switching is executed when the counted number of heat storage operation mode switching decisions reaches a predetermined number. Therefore, the energy loss generated in the heat storage tank can be reduced by alternately repeating the cooling heat storage operation and the heating heat storage operation.

Further, a heat-dissipation loss detecting means for detecting a heat-dissipation loss from the heat storage tank to the outside air is provided. Since it is configured to perform the operation or the heat storage operation for heating, it is possible to avoid a situation in which a necessary heat storage amount cannot be secured during the air conditioning time period due to a heat radiation loss from the heat storage tank to the outside air.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a regenerative air conditioner according to Embodiment 1 of the present invention.

FIG. 2 is a flowchart showing a method of determining an operation mode of the regenerative air conditioner of FIG. 1 during an air conditioning period.

FIG. 3 is a flowchart showing a procedure for selecting a heat storage operation mode determination method.

FIG. 4 is a schematic configuration diagram of a regenerative air conditioner according to Embodiment 2 of the present invention.

5 is a flowchart showing a control method in a heat storage time zone of the heat storage type air conditioner of FIG.

FIG. 6 is a schematic configuration diagram of a regenerative air conditioner according to Embodiment 3 of the present invention.

FIG. 7 is a schematic configuration diagram of a conventional thermal storage type air conditioner.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 outdoor unit, 2 heat storage tank, 3 indoor unit, 10 outdoor air temperature detecting means, 11 heat storage amount detecting means, 12 indoor temperature detecting means, 13 operating capacity detecting means, 14 control means, 15
Switching determination number counting means, 16 heat radiation loss detecting means.

Claims (9)

[Claims] 1. A cooling heat storage operation for cooling a heat storage medium in a heat storage tank during a preset heat storage time period, or a heating operation for heating a heat storage medium in the heat storage tank, comprising a heat storage tank containing a heat storage medium. While performing the heat storage operation, in a preset air conditioning time zone, in a heat storage type air conditioner that performs a cooling operation or a heating operation using heat stored in the heat storage medium in the heat storage tank, the heat storage time zone A heat storage type air conditioner, comprising: a control unit that automatically determines whether to perform the cooling heat storage operation or the heating heat storage operation based on a predetermined condition. 2. The regenerative air conditioner according to claim 1, wherein the heat storage operation for cooling or the heat storage operation for heating can be set by a manual operation during the heat storage time zone. 3. An external air temperature detecting means, wherein the control means comprises:
The heat storage operation for cooling or the heat storage operation for heating is determined during a heat storage time zone based on the temperature detected by the outside air temperature detection means. Regenerative air conditioner. 4. An operating capacity detecting means for detecting a cooling operating capacity and a heating operating capacity of the indoor unit during an air-conditioning time zone, respectively, and the control means includes a cooling operating capacity and a heating operating capacity detected by the operating capacity detecting means. 3. The heat storage air conditioner according to claim 1, wherein the heat storage air conditioner is configured to determine whether to perform the cooling heat storage operation or the heating heat storage operation in the heat storage time zone based on a comparison with the air conditioner. apparatus. 5. A cooling device according to claim 1, further comprising: first time counting means for counting an accumulated time in the cooling operation mode and an accumulated time in the heating operation mode in an air conditioning time zone, wherein the control means controls the cooling operation performed by the first time counting means. 2. The system according to claim 1, wherein a determination is made as to whether to perform the cooling heat storage operation or the heating heat storage operation during the heat storage time zone based on a comparison between the integrated time of the mode and the integrated time of the heating operation mode. Or the regenerative air conditioner according to item 2. 6. A compressor according to claim 1, further comprising: a second timer for counting an accumulated operation time of the compressor in the cooling operation mode and an accumulated operation time of the compressor in the heating operation mode during the air-conditioning period. Based on a comparison between the compressor integrated operation time in the cooling operation mode and the compressor integrated operation time in the heating operation mode, which is measured by the timer means, the heat storage operation for cooling or the heat storage operation for heating is performed during the heat storage time zone. The regenerative air conditioner according to claim 1, wherein the regenerative air conditioner is configured to determine whether or not to perform the operation. 7. A heat storage amount detecting means for detecting a heat storage amount of a heat storage medium in a heat storage tank, an indoor temperature detecting means for detecting an air temperature in a room where an indoor unit is installed, and a cooling operation utilizing heat storage in an air conditioning time zone. A third time measuring means for measuring the accumulated time of the heat storage utilizing heating operation and the accumulated time of the heat storage utilizing heating operation, respectively, wherein the control means is set to the cooling operation mode in the air conditioning time zone, and the indoor temperature detecting means When the detected temperature is equal to or higher than the predetermined temperature, if the detected heat storage amount of the heat storage amount detecting means is an amount usable for the cooling operation, the heat storage utilizing cooling operation is performed, and the detected heat storage amount of the heat storage amount detecting means is the cooling operation. If the amount is not available, the cooling operation without heat storage is performed.
It is set to the heating operation mode during the air conditioning time period, and
When the detected temperature of the indoor temperature detecting means is equal to or lower than a predetermined temperature, if the detected heat storage amount of the heat storage amount detecting means is an amount that can be used for a heating operation, a heat storage utilizing heating operation is performed. If the detected heat storage amount is an amount that cannot be used for the heating operation, the cooling operation that does not use the heat storage is performed.
Based on a comparison between the accumulated time of the heat storage cooling operation and the accumulated time of the heat storage heating operation measured by the timer means, it is determined whether to perform the cooling heat storage operation or the heating heat storage operation during the heat storage time zone. Claim 1 or Claim 2
Item 7. The regenerative air conditioner according to item 7. 8. The control means determines whether to switch the operation mode in the heat storage time zone from the heat storage operation for cooling to the heat storage operation for heating or to switch the heat storage operation mode from the heat storage operation for heating to the heat storage operation for cooling. Actually, the number of heat storage operation mode switching decisions is counted while suspending the switching of the heat storage operation mode, and the heat storage operation mode switching is executed when the counted number of heat storage operation mode switching decisions reaches a predetermined number. The regenerative air-conditioning apparatus according to any one of claims 1 to 7, wherein the air-conditioning apparatus is configured to perform the following. 9. A cooling heat storage device comprising a heat radiation loss detecting means for detecting a heat radiation loss from the heat storage tank to the outside air, and when the heat radiation loss detected by the heat radiation loss detecting means becomes larger than a predetermined amount during a heat storage time zone. The regenerative air conditioner according to any one of claims 1 to 8, configured to perform an operation or a heat storage operation for heating.