WO2016071951A1 - Système de climatisation - Google Patents

Système de climatisation Download PDF

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Publication number
WO2016071951A1
WO2016071951A1 PCT/JP2014/079199 JP2014079199W WO2016071951A1 WO 2016071951 A1 WO2016071951 A1 WO 2016071951A1 JP 2014079199 W JP2014079199 W JP 2014079199W WO 2016071951 A1 WO2016071951 A1 WO 2016071951A1
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WO
WIPO (PCT)
Prior art keywords
heating
conditioning system
air conditioning
indoor
air
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PCT/JP2014/079199
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English (en)
Japanese (ja)
Inventor
守 濱田
正樹 豊島
勇人 堀江
Original Assignee
三菱電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to JP2016557368A priority Critical patent/JP6490095B2/ja
Priority to PCT/JP2014/079199 priority patent/WO2016071951A1/fr
Publication of WO2016071951A1 publication Critical patent/WO2016071951A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/89—Arrangement or mounting of control or safety devices

Definitions

  • the present invention relates to an air conditioning system provided with a ventilation device.
  • a ventilator that heats outdoor air by heating means and supplies the heated air to the room to heat the room.
  • a ventilator has a configuration in which the amount of heating is controlled based on, for example, the difference between the indoor set temperature and the outdoor temperature (see, for example, Patent Document 1).
  • the conventional air conditioning system when the room is heated by both the indoor unit and the ventilator, each of the indoor unit and the ventilator operates independently. For this reason, the conventional air conditioning system has a problem that efficiency is deteriorated when the room is heated by both the indoor unit and the ventilation device.
  • the outside air load is a heating load generated by ventilation.
  • Other heating loads are heating loads that occur due to heat leakage from walls, windows, etc., and heat leakage due to draft air.
  • Internal heat generation includes heat generation from a human body, equipment, lighting, solar heat, and the like.
  • the conventional air conditioning system operates the indoor unit and the ventilator independently, and therefore the ventilator has an external air load of 20 [kW]. Bear. Therefore, the indoor unit performs heating of 3 [kw].
  • the heating capacity of the indoor unit and the ventilation device increases as the air volume increases.
  • the larger the air volume the better the efficiency. This is because the temperature of the heating means for heating the air can be reduced.
  • the indoor unit has a larger air volume than the ventilator. This is because it is desired to keep the air volume of the ventilator to the minimum necessary to prevent the outdoor air from entering the room and the indoor temperature from dropping too much. Therefore, in the case of the above example, the ventilation device having a low heating capacity generates a larger heating amount than the indoor unit having a high heating capacity, and the efficiency of the air conditioning system is deteriorated.
  • the present invention has been made to solve the above-described problems, and provides an air-conditioning system that can improve the efficiency of the room when both the indoor unit and the ventilator are heated. For the purpose.
  • An air conditioning system includes a first refrigeration cycle circuit having a first compressor, a first outdoor heat exchanger, a first expansion device, and a first indoor heat exchanger, and the first indoor as a first heating means.
  • An indoor unit having a heat exchanger, heating indoor air by the first heating means and returning the indoor air to the room, and second heating means, and heating the outdoor air by the second heating means to
  • a control device for controlling the indoor unit and the ventilation device, wherein the control device is an air conditioning load estimating means for estimating the heating load in the room, and a storage means for storing a threshold value.
  • the heating amount of the device with the lower heating capability is controlled to be constant, and the heating amount of the device with the higher heating capability of the indoor unit and the ventilation device is variably controlled.
  • the air conditioning system controls the heating amount of a device having a lower heating capacity among the indoor unit and the ventilator when the room is heated by both the indoor unit and the ventilator.
  • the heating amount of the device having the higher heating capacity is variably controlled. For this reason, the air conditioning system which concerns on this invention can improve efficiency rather than before, when heating an indoor with both an indoor unit and a ventilator.
  • FIG. 1 is a schematic diagram of an air conditioning system according to an embodiment of the present invention.
  • FIG. 2 is a refrigerant circuit diagram showing a refrigeration cycle circuit of the air conditioning system.
  • FIG. 3 is the schematic which shows the ventilation apparatus of this air conditioning system.
  • the configuration of the air-conditioning system 100 according to the present embodiment will be described with reference to FIGS. 1 and 2, an air conditioning system 100 including a plurality of indoor units 1 and one ventilator 3 is described.
  • the number of indoor units 1 and ventilation devices 3 is merely an example, and the number of indoor units 1 may be one, or a plurality of ventilation devices 3 may be provided.
  • the air conditioning system 100 includes an indoor unit 1 and a ventilation device 3 installed in the same room 200.
  • the indoor unit 1 heats the air in the room 200 with the first heating means and returns it to the room 200.
  • the ventilator 3 heats the outdoor air with the second heating means and supplies it to the room 200.
  • the ventilation device 3 is provided with an OA temperature detection device 31 that detects the temperature of outdoor air (OA) and an RA temperature detection device 32 that detects the temperature of air (RA) in the room 200. It has been.
  • the OA temperature detection device 31 corresponds to the outdoor temperature detection device of the present invention.
  • the RA temperature detection device 32 corresponds to the indoor temperature detection device of the present invention.
  • the installation positions of the OA temperature detection device 31 and the RA temperature detection device 32 are arbitrary, and may be provided outside the ventilation device 3.
  • the air conditioning system 100 includes a first refrigeration cycle circuit 11 and a second refrigeration cycle circuit 21.
  • the indoor heat exchanger 16 of the first refrigeration cycle circuit 11 is used as the first heating means of the indoor unit 1
  • the indoor heat exchanger 26 of the second refrigeration cycle circuit 21 is used as the second heating means of the ventilation device 3. Yes.
  • the air conditioning system 100 according to Embodiment 1 includes the outdoor unit 2 that houses a part of the configuration of the first refrigeration cycle circuit 11, and the outdoor unit 2 and the indoor unit 1 are connected by the refrigerant pipe 101. Connected.
  • the air conditioning system 100 includes an outdoor unit 4 that houses a part of the configuration of the second refrigeration cycle circuit 21, and connects the outdoor unit 4 and the ventilator 3 with a refrigerant pipe 102. ing. That is, in the present embodiment, the indoor unit system is configured by the indoor unit 1 and the outdoor unit 2, and the ventilator system is configured by the ventilator 3 and the outdoor unit 4.
  • the first refrigeration cycle circuit 11 includes a compressor 12, an outdoor heat exchanger 14, an expansion device 15, and an indoor heat exchanger 16.
  • the first refrigeration cycle circuit 11 also includes a four-way valve 13 in order to realize both cooling and heating in the indoor unit 1.
  • the compressor 12 corresponds to the first compressor of the present invention.
  • the outdoor heat exchanger 14 corresponds to the first outdoor heat exchanger of the present invention.
  • the expansion device 15 corresponds to the first expansion device of the present invention.
  • the indoor heat exchanger 16 corresponds to the first indoor heat exchanger of the present invention.
  • the compressor 12 sucks refrigerant and compresses the refrigerant to a high temperature and high pressure state.
  • the kind of the compressor 12 is not specifically limited,
  • the compressor 12 can be comprised using various types of compression mechanisms, such as a reciprocating, a rotary, a scroll, or a screw.
  • the compressor 12 may be of a type that can be variably controlled by an inverter or the like.
  • a four-way valve 13 is connected to the discharge port and the suction port of the compressor 12.
  • the four-way valve 13 switches the connection destination of the discharge port of the compressor 12 to one of the outdoor heat exchanger 14 or the indoor heat exchanger 16, and the suction port of the compressor 12 is switched to the outdoor heat exchanger 14 or the indoor heat exchanger 16. Switch to the other.
  • the outdoor heat exchanger 14 is an air heat exchanger that exchanges heat between the refrigerant flowing inside and the outdoor air. In the vicinity of the outdoor heat exchanger 14, an outdoor blower 17 that supplies outdoor air to be heat exchanged to the outdoor heat exchanger 14 may be provided.
  • the outdoor heat exchanger 14 is connected to the indoor heat exchanger 16 via the expansion device 15.
  • the expansion device 15 is an expansion valve, for example, and expands the refrigerant by decompressing it.
  • the indoor heat exchanger 16 is an air heat exchanger that exchanges heat between the refrigerant flowing inside and the air in the room 200.
  • an indoor blower 18 that supplies the air in the room 200 to be heat exchanged to the indoor heat exchanger 16 may be provided.
  • the indoor blower 18 corresponds to the first blower of the present invention.
  • Each component of the first refrigeration cycle circuit 11 is housed in the indoor unit 1 and the outdoor unit 2.
  • the indoor unit 1 houses an expansion device 15, an indoor heat exchanger 16, and an indoor blower 18.
  • the outdoor unit 2 houses a compressor 12, a four-way valve 13, an outdoor heat exchanger 14, and an outdoor blower 17.
  • the installation position of the expansion device 15 is arbitrary and may be stored in the outdoor unit 2.
  • the second refrigeration cycle circuit 21 includes a compressor 22, an outdoor heat exchanger 24, an expansion device 25, and an indoor heat exchanger 26.
  • the second refrigeration cycle circuit 21 according to the present embodiment also includes a four-way valve 23 in order to realize both cooling and heating in the ventilation device 3.
  • the compressor 22 corresponds to the second compressor of the present invention.
  • the outdoor heat exchanger 24 corresponds to the second outdoor heat exchanger of the present invention.
  • the expansion device 25 corresponds to the second expansion device of the present invention.
  • the indoor heat exchanger 26 corresponds to the second indoor heat exchanger of the present invention.
  • the compressor 22 sucks the refrigerant and compresses the refrigerant to bring it into a high temperature and high pressure state.
  • the kind of the compressor 22 is not specifically limited,
  • the compressor 22 can be comprised using various types of compression mechanisms, such as a reciprocating, a rotary, a scroll, or a screw.
  • the compressor 22 may be of a type that can be variably controlled by an inverter or the like.
  • a four-way valve 23 is connected to the discharge port and the suction port of the compressor 22.
  • the four-way valve 23 switches the connection destination of the discharge port of the compressor 22 to one of the outdoor heat exchanger 24 or the indoor heat exchanger 26, and the suction port of the compressor 22 is switched to the outdoor heat exchanger 24 or the indoor heat exchanger 26. Switch to the other.
  • the outdoor heat exchanger 24 is an air heat exchanger that exchanges heat between the refrigerant flowing inside and the outdoor air.
  • an outdoor fan 27 that supplies outdoor air to be heat exchanged to the outdoor heat exchanger 24 may be provided.
  • This outdoor heat exchanger 24 is connected to an indoor heat exchanger 26 via an expansion device 25.
  • the expansion device 25 is an expansion valve, for example, and expands the refrigerant by decompressing it.
  • the indoor heat exchanger 26 is an air heat exchanger that exchanges heat between the refrigerant flowing inside and the outdoor air.
  • An air supply fan 28 that takes outdoor air to be heat exchanged into the ventilation device 3 and supplies it to the indoor heat exchanger 26 may be provided around the indoor heat exchanger 26.
  • the air supply fan 28 corresponds to the second fan of the present invention.
  • Each component of the second refrigeration cycle circuit 21 described above is housed in the ventilation device 3 and the outdoor unit 4.
  • the expansion device 25, the indoor heat exchanger 26, and the air supply blower 28 are accommodated in the ventilation device 3.
  • the outdoor unit 4 houses a compressor 22, a four-way valve 23, an outdoor heat exchanger 24, and an outdoor blower 27.
  • the installation position of the expansion device 25 is arbitrary and may be stored in the outdoor unit 4.
  • the air conditioning system 100 includes a control device 40 that controls the indoor unit 1 and the ventilation device 3.
  • the control device 40 is, for example, a microcomputer, and includes a storage unit 41, an air conditioning load estimation unit 42, and a condensation temperature control unit 43.
  • the storage unit 41 stores a set temperature that is a target temperature of the room 200, a threshold value used for heating amount control of the condensation temperature control unit 43, and the like.
  • the air conditioning load estimation means 42 is for estimating the heating load of the room 200.
  • the outside air load is a heating load generated by ventilation.
  • Other heating loads are heating loads that occur due to heat leakage from walls, windows, etc., and heat leakage due to draft air.
  • Internal heat generation includes heat generation from a human body, equipment, lighting, solar heat, and the like. When the heating load is negative, it is a cooling load.
  • the condensation temperature control means 43 compares the heating load estimated by the air conditioning load estimation means 42 with the threshold value L0 stored in the storage means 41, and controls the heating amounts of the indoor unit 1 and the ventilation device 3. Specifically, when the heating load is equal to or greater than the threshold value L0, the condensing temperature control means 43 controls the heating amount of the indoor unit 1 and the ventilation device 3 with the lower heating capacity to be constant, and the indoor unit 1 and the ventilation. Of the devices 3, the heating amount of the device having the higher heating capacity is variably controlled. Further, when the heating load is smaller than the threshold value L0, the condensation temperature control means 43 stops heating one of the indoor unit 1 and the ventilating device 3 and variably controls the other heating amount of the indoor unit 1 and the ventilating device 3. To do.
  • the condensing temperature control means 43 corresponds to the heating amount control means of the present invention.
  • the air conditioning system 100 uses the indoor heat exchanger 16 of the first refrigeration cycle circuit 11 as the first heating means of the indoor unit 1, and uses the second refrigeration cycle circuit 21.
  • the indoor heat exchanger 26 is used as the second heating means of the ventilation device 3.
  • the condensation temperature control means 43 which concerns on this Embodiment controls the heating amount of the indoor unit 1 by controlling the condensation temperature of the 1st freezing cycle circuit 11.
  • the condensing temperature control means 43 controls the first refrigeration cycle circuit 11 by controlling at least one of the rotational speed of the compressor 12, the opening degree of the expansion device 15, and the rotational speed of the indoor blower 18. To control the condensation temperature.
  • the condensing temperature control means 43 controls the heating amount of the ventilator 3 by controlling the condensing temperature of the second refrigeration cycle circuit 21. Specifically, the condensation temperature control means 43 controls the second refrigeration cycle by controlling at least one of the rotational speed of the compressor 22, the opening degree of the expansion device 25, and the rotational speed of the air supply blower 28. The condensing temperature of the circuit 21 is controlled. The condensing temperature control means 43 is configured to be able to control the driving and stopping of the compressor 12, the indoor fan 18, the compressor 22, and the air supply fan 28.
  • the heating capacity of the indoor unit and the ventilation device increases as the air volume increases. Moreover, when generating the same heating amount, the larger the air volume, the better the efficiency. This is because the temperature of the heating means for heating the air can be reduced.
  • the indoor unit 1 has a larger air volume than the ventilation device 3. This is to prevent outdoor air from entering the room 200 and causing the room temperature of the room 200 to decrease too much. Therefore, the condensation temperature control means 43 according to the present embodiment controls the heating amounts of the indoor unit 1 and the ventilation device 3 on the assumption that the indoor unit 1 is a device having a higher heating capacity than the ventilation device 3. Information about which apparatus has a higher heating capacity is stored in the storage means 41.
  • the condensing temperature control means 43 when variably controlling the heating amounts of the indoor unit 1 and the ventilating device 3, changes the set temperature and the detected value of the RA temperature detecting device 32 (in other words, the temperature of the indoor 200). The heating amount is controlled based on the difference from the room temperature.
  • the first refrigeration cycle circuit 11 When the room 200 is cooled by the indoor unit 1, the first refrigeration cycle circuit 11 operates as follows.
  • the refrigerant compressed by the compressor 12 becomes a high-temperature and high-pressure gas refrigerant and is sent to the outdoor heat exchanger 14.
  • the refrigerant that has flowed into the outdoor heat exchanger 14 is liquefied by releasing heat to the outdoor air.
  • the liquefied refrigerant is decompressed by the expansion device 15 and becomes a gas-liquid two-phase state.
  • the refrigerant that has been decompressed by the expansion device 15 and is in a gas-liquid two-phase state flows into the indoor heat exchanger 16 and absorbs heat from the air in the room 200 (by cooling the air in the room 200). Turn into.
  • the gasified refrigerant returns to the compressor 12.
  • the air cooled by the indoor heat exchanger 16 returns to the room 200 again. Thereby, the indoor unit 1 can cool the room 200.
  • the first refrigeration cycle circuit 11 operates as follows.
  • the refrigerant compressed by the compressor 12 becomes a high-temperature and high-pressure gas refrigerant.
  • the high-temperature and high-pressure gas refrigerant compressed by the compressor 12 is sent to the indoor heat exchanger 16.
  • the refrigerant flowing into the indoor heat exchanger 16 is liquefied by releasing heat to the air in the room 200 (by heating the air in the room 200).
  • the liquefied refrigerant is decompressed by the expansion device 15 to be in a gas-liquid two-phase state, and is gasified by absorbing heat from the outdoor air in the outdoor heat exchanger 14.
  • the gasified refrigerant returns to the compressor 12.
  • the air heated by the indoor heat exchanger 16 returns to the room 200 again.
  • the indoor unit 200 can be heated by the indoor unit 1.
  • the second refrigeration cycle circuit 21 operates as follows.
  • the refrigerant compressed by the compressor 22 becomes a high-temperature and high-pressure gas refrigerant and is sent to the outdoor heat exchanger 24.
  • the refrigerant that has flowed into the outdoor heat exchanger 24 is liquefied by releasing heat to the outdoor air.
  • the liquefied refrigerant is decompressed by the expansion device 25 and becomes a gas-liquid two-phase state.
  • the refrigerant that has been decompressed by the expansion device 25 and is in a gas-liquid two-phase state flows into the indoor heat exchanger 26 and absorbs heat from the outdoor air taken into the ventilation device 3 (cools the outdoor air). Gasification).
  • the gasified refrigerant returns to the compressor 22.
  • the outdoor air cooled by the indoor heat exchanger 26 is supplied to the room 200. Thereby, the room 200 can be cooled by the ventilation device 3.
  • the second refrigeration cycle circuit 21 operates as follows.
  • the refrigerant compressed by the compressor 22 becomes a high-temperature and high-pressure gas refrigerant.
  • the high-temperature and high-pressure gas refrigerant compressed by the compressor 22 is sent to the indoor heat exchanger 26.
  • the refrigerant flowing into the indoor heat exchanger 26 is liquefied by releasing heat to the outdoor air taken into the ventilation device 3 (by heating the outdoor air).
  • the liquefied refrigerant is decompressed by the expansion device 25 to be in a gas-liquid two-phase state, and is gasified by absorbing heat from outdoor air in the outdoor heat exchanger 24.
  • the gasified refrigerant returns to the compressor 22.
  • the outdoor air heated by the indoor heat exchanger 26 is supplied to the room 200. Thereby, the room 200 can be heated by the ventilation device 3.
  • the air conditioning system 100 varies the operation mode based on the heating load of the room 200 when the room 200 is heated.
  • the air conditioning load estimation means 42 of the control device 40 estimates the heating load of the room 200.
  • the condensing temperature control means 43 of the control device 40 compares the heating load estimated by the air conditioning load estimation means 42 with the threshold L0 stored in the storage means 41.
  • the condensation temperature control means 43 controls the indoor unit 1 and the ventilator 3 in the operation mode shown in FIG. Moreover, in the zone 2 where the heating load of the room 200 is equal to or higher than the threshold value L0, the condensation temperature control means 43 controls the indoor unit 1 and the ventilation device 3 in the operation mode shown in FIG.
  • the condensation temperature control means 43 stops heating the indoor unit 1,
  • the room 200 is heated by variably controlling the heating amount.
  • the condensation temperature control means 43 operates the second refrigeration cycle circuit 21 so that the condensation temperature of the second refrigeration cycle circuit 21 becomes CTmax when ⁇ T is ⁇ T> T1 [K].
  • the condensation temperature control means 43 changes the condensation temperature of the second refrigeration cycle circuit 21 in accordance with the magnitude of ⁇ T, and the second refrigeration cycle.
  • the circuit 21 is operated. Specifically, the condensation temperature control means 43 increases the condensation temperature of the second refrigeration cycle circuit 21 as ⁇ T increases, and operates the second refrigeration cycle circuit 21.
  • the condensation temperature control means 43 operates the second refrigeration cycle circuit 21 so that the condensation temperature of the second refrigeration cycle circuit 21 becomes CTmin when ⁇ T is T2 [K] ⁇ ⁇ T ⁇ 0 [K]. .
  • the condensation temperature control means 43 stops the heating of the ventilator 3 when ⁇ T is ⁇ T ⁇ T2 [K].
  • the indoor unit 200 performs the cooling operation of the room 200 because the room temperature of the room 200 is too high with respect to the set temperature.
  • CTmax shown in FIG. 5 is the maximum condensation temperature at which the second refrigeration cycle circuit 21 can operate. This CTmax is determined by the breakdown voltage or the like. Further, CTmin shown in FIG. 5 is the lowest condensation temperature at which the second refrigeration cycle circuit 21 can operate. This CTmin is determined from the lower limit value of the temperature of the air blown out from the ventilator 3 and the minimum high / low pressure difference of the refrigerant allowed when the second refrigeration cycle circuit 21 is operated. Further, T1 is a temperature difference allowed for comfort, and is set to 1 [K], for example. T2 is a temperature difference ⁇ T at which heating of the ventilator 3 is stopped, and corresponds to the thermo OFF point. T2 is also a temperature difference allowed for comfort, and is set to 1 [K], for example.
  • the insulation performance of buildings has improved.
  • the room often has a cooling load even in winter when the enthalpy of air introduced from outside air is low. That is, in the case of the conventional air conditioning system, there is a problem that if the room is heated by the ventilator, the room is excessively heated to increase the cooling load on the indoor unit side.
  • the outside air load is 10 [kw] and the internal heat generation is 5 [kw]. Further, it is assumed that the other heating load is 2 [kw] due to the improvement of the heat insulation performance of the building.
  • the heating amount of the ventilation device 3 is controlled based on the difference between the set temperature of the room 200 and the room temperature of the room 200 as described above. .
  • the ventilator 3 can be operated so as to bear a part of the outside air load (for example, heating of 7 [kw]).
  • the condensation temperature control means 43 controls the heating amounts of both the indoor unit 1 and the ventilator 3.
  • the ventilation device 3 having a low heating capacity is controlled to a constant heating amount as shown in FIG. That is, the condensation temperature control means 43 operates the second refrigeration cycle circuit 21 so that the condensation temperature of the second refrigeration cycle circuit 21 is constant at CTmin.
  • the condensation temperature of the second refrigeration cycle circuit 21 does not necessarily have to be CTmin, and may be any condensation temperature between CTmax and CTmin.
  • the condensing temperature control means 43 changes the condensing temperature of the first refrigeration cycle circuit 11 according to the magnitude of ⁇ Ti, and thereby the first refrigeration cycle.
  • the circuit 11 is operated. Specifically, the condensing temperature control means 43 increases the condensing temperature of the first refrigeration cycle circuit 11 as ⁇ Ti increases, and operates the first refrigeration cycle circuit 11. Further, the condensation temperature control means 43 operates the first refrigeration cycle circuit 11 so that the condensation temperature of the first refrigeration cycle circuit 11 becomes CTmini when ⁇ Ti is T2i [K] ⁇ ⁇ Ti ⁇ 0 [K]. . Moreover, the condensation temperature control means 43 stops the heating of the indoor unit 1 when ⁇ Ti is ⁇ Ti ⁇ T2i [K]. That is, at least the compressor 12 of the first refrigeration cycle circuit 11 is stopped.
  • CTmaxi shown in FIG. 7 is the maximum condensation temperature at which the first refrigeration cycle circuit 11 can operate. This CTmaxi is determined by the breakdown voltage or the like. Further, CTmini shown in FIG. 7 is the lowest condensation temperature at which the first refrigeration cycle circuit 11 can operate. This CTmini is determined from the lower limit value of the temperature of the air blown out from the indoor unit 1 and the minimum high / low pressure difference of the refrigerant allowed when the first refrigeration cycle circuit 11 is operated.
  • T1i is a temperature difference allowed for comfort, and is set to 1 [K], for example.
  • T2i is a temperature difference ⁇ Ti for stopping the heating of the indoor unit 1, and corresponds to the thermo OFF point.
  • T2i is also a temperature difference allowed for comfort, and is set to 1 [K], for example.
  • FIG. 8 is a flowchart showing operation mode switching control during heating operation in the air-conditioning system according to the present embodiment.
  • the air conditioning load estimation means 42 of the control device 40 estimates the heating load of the room 200 in step S2.
  • the condensation temperature control means 43 of the control device 40 compares the heating load estimated by the air conditioning load estimation means 42 with the threshold value L ⁇ b> 0 stored in the storage means 41.
  • step S3 When it is determined in step S2 that the heating load of the room 200 is smaller than the threshold L0, in step S3, the condensing temperature control means 43 performs the condensing temperature variable control (CT on the ventilator 3 side shown in FIG. 5 or FIG. 6. Variable control). Thereafter, the process proceeds to step S4, where the condensing temperature control means 43 determines whether or not the difference ⁇ T between the set temperature and the detected value of the RA temperature detecting device 32 is smaller than T2 [K].
  • step S4 When ⁇ T is ⁇ T ⁇ T2 [K] in step S4, the condensation temperature control means 43 performs the cooling operation of the room 200 by the indoor unit 1 in step S5, and returns to step S4. If T2 [K] ⁇ ⁇ T in step S4, the condensation temperature control means 43 returns to step S2.
  • step S6 the condensing temperature control means 43 causes the condensing temperature control (CT constant control) on the ventilator 3 side as shown in FIG. ), The indoor unit 1 side performs the condensation temperature variable control (CT variable control). Then, it returns to step S2.
  • CT constant control condensing temperature control
  • the efficiency of the air conditioning system 100 can be improved as compared with the conventional case.
  • the outside air load is 20 [kw]
  • the other heating load is 8 [kw]
  • the internal heat generation is 5 [kw].
  • the ventilator since the indoor unit and the ventilator are each independently operated, the ventilator whose heating amount is controlled based on the difference between the indoor set temperature and the outdoor temperature is determined by ventilation. It bears all of the outside air load that is the heating load that occurs.
  • the ventilation device 3 side performs constant condensation temperature control (CT constant control).
  • CT constant control constant condensation temperature control
  • the ventilator 3 can be operated so as to bear a part of the outside air load (for example, heating of 5 [kw]).
  • the condensing temperature control means 43 determines the condensing temperature on the ventilator 3 side (of the second refrigeration cycle circuit 21) according to the condensing temperature on the indoor unit 1 side (condensing temperature on the first refrigeration cycle circuit 11).
  • the condensing temperature) may be changed, and then the condensing temperature constant control (CT constant control) of the ventilation device 3 may be performed.
  • CT constant control condensing temperature constant control
  • the condensation temperature on the indoor unit 1 side is close to CTmaxi
  • the condensation temperature of the ventilator 3 is increased as shown in FIG. 9 (A), and the condensation on the indoor unit 1 side is shown in FIG. 9 (B).
  • the temperature may be lowered. Thereby, you may make the air conditioning system 100 highly efficient.
  • step S6 for example, the indoor unit 1 side
  • the condensation temperature on the ventilator 3 side may be lowered.
  • the air conditioning system 100 when the air conditioning system 100 according to the present embodiment heats the room 200 with both the indoor unit 1 and the ventilator 3, the heating amount of the ventilator 3 with a low heating capacity is controlled to be constant, and the heating capacity is The heating amount of the high indoor unit 1 is variably controlled. For this reason, the air conditioning system 100 which concerns on this Embodiment can improve efficiency rather than before, when heating the room
  • the ventilator 3 when the ventilator 3 is provided in a room such as a hall where people are crowded, a large amount of ventilation is required, and thus the ventilator 3 may have a larger air volume than the indoor unit 1. That is, the heating capacity of the ventilator 3 may be higher than the heating capacity of the indoor unit 1.
  • the heating amount of the indoor unit 1 having a low heating capacity is controlled to be constant. What is necessary is just to control the heating amount of the high ventilation apparatus 3 variably. By doing in this way, the efficiency of the air conditioning system 100 can be improved compared with the past.
  • the ventilation device 3 according to the present embodiment is not limited to the configuration shown in FIG. 3, and may be configured as shown in FIG. 10, for example.
  • FIG. 10 is a schematic diagram illustrating another example of the ventilation device of the air-conditioning system according to the embodiment of the present invention.
  • the ventilation device 3 shown in FIG. 10 includes an exhaust fan 29 and a total heat exchanger 30. That is, the ventilator 3 shown in FIG. 10 drives the exhaust fan 29 to take the air in the room 200 as the return air RA into the ventilator 3, passes the total heat exchanger 30, and then discharges the air EA. It is configured to discharge to the outside.
  • the ventilator 3 shown in FIG. 10 has a configuration in which the outdoor air taken into the ventilator 3 flows into the total heat exchanger 30, exchanges heat with the return air RA, and then flows into the indoor heat exchanger 26. ing. By using the ventilation device 3 shown in FIG. 10, the heat stored in the air in the room 200 can be effectively used.
  • the air conditioning load estimation unit 42 does not particularly limit the method of estimating the heating load of the room 200, but for example, the detection value of the RA temperature detection device 32 and the detection of the OA temperature detection device 31
  • the heating load may be estimated based on the difference between the two values (the detected value of the RA temperature detecting device 32 ⁇ the detected value of the OA temperature detecting device 31), that is, the difference between the indoor temperature and the outdoor temperature.
  • the heating load increases as the value of the room temperature-outdoor temperature increases.
  • the zone 1 is set.
  • the zone 2 is set.
  • the operation mode of the air conditioning system 100 is determined using one threshold value L0.
  • the operation mode of the air conditioning system 100 may be determined using a plurality of threshold values.
  • a plurality of threshold values may be stored in the storage unit 41, and the air conditioning load estimation unit 42 may determine the operation mode using different threshold values depending on the time zone.
  • two threshold values L0 and L1 may be stored in the storage unit 41 in consideration of solar heat as shown in FIG.
  • the air conditioning load estimation means 42 may determine the operation mode using L1 having a value larger than L0 by the amount of solar heat. By doing in this way, it becomes possible to consider the load fluctuation part with and without solar radiation.
  • the configuration in which the heating amount of the indoor unit 1 and the ventilating device 3 is controlled by controlling the condensation temperature has been described. It is not limited.
  • FIG. 13 is a schematic diagram illustrating an example of each air conditioning system according to the embodiment of the present invention.
  • the indoor unit 1 includes a blowing temperature detection device 33 that detects the temperature of air blown from the indoor unit 1.
  • the ventilator 3 includes a blowing temperature detection device 34 that detects the temperature of air blown from the ventilating device 3.
  • the air conditioning system 100 shown in FIG. 13 controls the temperature of the air blown out from the indoor unit 1 and the ventilation device 3 by the heating amount control means 44 (corresponding to the condensation temperature control means 43) of the control device 40. By doing so, the heating amount of the indoor unit 1 and the ventilation device 3 is controlled.
  • the condensation temperature of the first refrigeration cycle circuit 11 is increased, and by reducing the temperature of the air blown from the indoor unit 1, the first refrigeration cycle circuit is increased. 11 condensation temperature is lowered. Further, by increasing the temperature of the air blown from the ventilator 3, the condensation temperature of the second refrigeration cycle circuit 21 is increased, and by lowering the temperature of the air blown from the ventilator 3, the second refrigeration is performed. The condensation temperature of the cycle circuit 21 is lowered. For this reason, the heating amount of the indoor unit 1 and the ventilator 3 can be controlled by controlling the temperature of the air blown out from the indoor unit 1 and the ventilator 3.
  • the blowing temperature detecting device 33 corresponds to the first temperature detecting device of the present invention
  • the blowing temperature detecting device 34 corresponds to the second temperature detecting device of the present invention.
  • the second heating means provided in the ventilation device 3 may be other than the indoor heat exchanger 26 of the second refrigeration cycle circuit 21.
  • FIG. 14 is a schematic diagram illustrating still another example of the ventilation device of the air-conditioning system according to the embodiment of the present invention.
  • the ventilation device 3 shown in FIG. 14 includes an indoor heat exchanger 35 as the second heating means.
  • the indoor heat exchanger 35 heats outdoor air taken into the ventilator 3 by heat generated by burning gas or the like.
  • the heating amount of the ventilator 3 can be controlled by controlling the temperature of the air blown from the ventilator 3 as described in FIG.
  • the reason why the indoor heat exchanger 26 of the second refrigeration cycle circuit 21 is provided in the ventilation device 3 shown in FIG. 14 is to cool the room 200 with the ventilation device 3.
  • the room 200 is not cooled by the ventilator 3, there is no need to provide the indoor heat exchanger 26 in the ventilator 3 (that is, the air conditioning system 100 needs to be provided with the second refrigeration cycle circuit 21).

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

La présente invention concerne un système de climatisation (100) pourvu d'une unité intérieure (1) et d'un dispositif de ventilation (3). Le système de climatisation (100) est conçu de sorte que, lorsque l'unité intérieure (1) et le dispositif de ventilation (3) sont tous deux utilisés afin de chauffer un intérieur (200), la quantité de chauffage du dispositif ayant la capacité de chauffage la plus basse parmi l'unité intérieure (1) et le dispositif de ventilation (3) soit régulée de manière à être constante et la quantité de chauffage du dispositif ayant la capacité de chauffage la plus élevée parmi l'unité intérieure (1) et le dispositif de ventilation (3) soit régulée de manière variable.
PCT/JP2014/079199 2014-11-04 2014-11-04 Système de climatisation WO2016071951A1 (fr)

Priority Applications (2)

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JP2016557368A JP6490095B2 (ja) 2014-11-04 2014-11-04 空気調和システム
PCT/JP2014/079199 WO2016071951A1 (fr) 2014-11-04 2014-11-04 Système de climatisation

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Application Number Priority Date Filing Date Title
PCT/JP2014/079199 WO2016071951A1 (fr) 2014-11-04 2014-11-04 Système de climatisation

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WO2016071951A1 true WO2016071951A1 (fr) 2016-05-12

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3961113A4 (fr) * 2019-05-31 2023-01-11 Daikin Industries, Ltd. Système de climatisation

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Publication number Priority date Publication date Assignee Title
JP2006145070A (ja) * 2004-11-17 2006-06-08 Hitachi Ltd 空調システム及び空調システム制御方法
JP2012042153A (ja) * 2010-08-20 2012-03-01 Mitsubishi Heavy Ind Ltd 外気処理空調機およびそれを用いたマルチ空調システム
JP2012063117A (ja) * 2010-09-17 2012-03-29 Kajima Corp 空調システム
JP2013139905A (ja) * 2011-12-28 2013-07-18 Daikin Industries Ltd 空調システム
JP2014137207A (ja) * 2013-01-18 2014-07-28 Daikin Ind Ltd 空調システム

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Publication number Priority date Publication date Assignee Title
JP2004293810A (ja) * 2003-03-25 2004-10-21 Mitsubishi Electric Corp 空気調和システム
JP5371575B2 (ja) * 2009-06-23 2013-12-18 アズビル株式会社 空調操作装置および空調操作方法
JP5328951B2 (ja) * 2012-03-28 2013-10-30 三菱電機株式会社 空気調和システム

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006145070A (ja) * 2004-11-17 2006-06-08 Hitachi Ltd 空調システム及び空調システム制御方法
JP2012042153A (ja) * 2010-08-20 2012-03-01 Mitsubishi Heavy Ind Ltd 外気処理空調機およびそれを用いたマルチ空調システム
JP2012063117A (ja) * 2010-09-17 2012-03-29 Kajima Corp 空調システム
JP2013139905A (ja) * 2011-12-28 2013-07-18 Daikin Industries Ltd 空調システム
JP2014137207A (ja) * 2013-01-18 2014-07-28 Daikin Ind Ltd 空調システム

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3961113A4 (fr) * 2019-05-31 2023-01-11 Daikin Industries, Ltd. Système de climatisation

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