JP2008039312A - Multi-chamber type air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a multi-chamber type air conditioner, reducing a performance measurement time in a cooling/heating performance test. <P>SOLUTION: In the multi-chamber type air conditioner 1, after the indoor/outdoor air temperature after the operation of one or more selected indoor units of the multi-chamber type air conditioner 1 falls within a predetermined allowance, when a predetermined operation button of one of remote controllers 17a-17d of the one or more indoor units 16a-16d selected to operate, or one body of one or more indoor unit bodies 16a-16d selected to operate of the multi-chamber air conditioner 1 and an outdoor unit body 19 is pressed, the operating frequency of a compressor 2 is fixed to change an opening of an outdoor expansion valve 5 or indoor expansion valves 21a to 21d and the rotational frequency of an outdoor fan 10 only, so that the amount of time elapsed until it reaches the target discharge temperature can be reduced to shorten the performance measurement time. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a multi-room air conditioner having a reduction in capacity measurement time during a cooling / heating capacity test.

  The conventional multi-room air conditioner has an address setting switch provided on the control board of the indoor controller (see, for example, Patent Document 1).

  FIG. 6 is a refrigeration cycle diagram showing an example of a conventional multi-room air conditioner described in Patent Document 1. As shown in FIG. 6, the multi-room air conditioner 1 includes a compressor 2, a four-way valve 3 that switches a refrigerant circulation direction, an outdoor heat exchanger 4, and an outdoor expansion valve 5 that controls the flow rate of the refrigerant. The outdoor unit 19 and a plurality of indoor units 16a to 16d each having indoor heat exchangers 6a to 6d, indoor expansion valves 21a to 21b, and the like are connected by a refrigerant pipe 7. The outdoor unit 10 generates an air flow that passes through the outdoor heat exchanger 4 in the outdoor unit 19, and the indoor fans 12 a to 12 d that generate an air flow that passes through the indoor heat exchangers 6 a to 6 d in the indoor units 16 a to 16 d, respectively. Is provided. Further, the discharge temperature detecting means 9 provided on the refrigerant outflow side of the compressor 2, the outdoor heat exchanger temperature detecting means 11 provided at a predetermined position of the outdoor heat exchanger 4, and provided at a predetermined position on the windward side of the outdoor heat exchanger 4. Indoor heat exchanger temperature detecting means 13a to 13d provided at predetermined positions of the indoor heat exchangers 6a to 6d and indoors provided at predetermined positions on the windward side of the indoor heat exchangers 6a to 6d, respectively. Suction temperature detection means 14a-14d are provided. Furthermore, the indoor units 16a to 16d include indoor controllers 15a to 15d that receive signals from the remote controllers 17a to 17d, outdoor controllers that communicate with the indoor controllers 15a to 15d, and control boards for the indoor controllers 15a to 15d. Address setting switches 22a to 22d provided above are provided.

FIG. 7 is a flowchart illustrating a control procedure when operating a conventional multi-room air conditioner, and S101 to S106 indicate each operation step. First, when the multi-room air conditioner 1 is operated, normal operation is performed (S101). When the temperature of the indoor / outdoor air conditioning during performance measurement is determined in S102 and it is determined that the indoor / outdoor air temperature is outside the tolerance range of the performance measurement temperature, the operation frequency, the indoor / outdoor expansion valve opening degree are determined in S103. Then, the outdoor fan speed is changed, and the normal operation mode of S101 is entered. On the other hand, when it is determined in S102 that the indoor / outdoor air temperature is within the tolerance range of the performance measurement temperature, the operation frequency, the indoor / outdoor expansion valve opening degree, and the outdoor fan rotation speed are fixed (S104). In S105, the discharge temperature is determined. If the target discharge temperature has not been reached, the process returns to S103. On the other hand, if the target discharge temperature has been reached in S105, performance measurement is performed in S106.
JP 2005-49069 A

  However, in the above-described conventional configuration, the operation frequency, the indoor / outdoor expansion valve opening degree, and the outdoor fan rotation speed are repeatedly changed until the target discharge temperature is reached. Had.

  The present invention solves the above-described conventional problems, and an object of the present invention is to provide a multi-room air conditioner that improves the control method to shorten the capacity measurement time during the cooling / heating capacity test.

  In order to solve the above-mentioned conventional problem, the multi-room air conditioner according to claim 1 is such that the indoor / outdoor air temperature after operation of one or more selected indoor units falls within the tolerance of the performance measurement temperature. After that, one of the remote controllers of one or more indoor units selected for operation or one of the one or more indoor unit main bodies and outdoor unit main bodies selected for operation of the multi-room air conditioner. When a predetermined operation button of one main body is pressed, the operating frequency of the compressor is fixed. As a result, only the change in the indoor / outdoor expansion valve opening and the outdoor fan speed is changed, and the time until the target discharge temperature is reached is shortened.

  The multi-room air conditioner according to claim 2 is one or more selected for operation after the indoor / outdoor air temperature after the operation of one or more selected indoor units falls within the tolerance of the performance measurement temperature. When a predetermined operation button is pressed on one of the remote controllers of one of the indoor units and one or more of the selected indoor unit and outdoor unit selected for operation of the multi-room air conditioner The opening degree of the indoor / outdoor expansion valve is fixed. As a result, only the operation frequency of the compressor and the outdoor fan speed are changed, and the time until the target discharge temperature is reached is shortened.

  The multi-room air conditioner according to claim 3 is one or more selected for operation after the indoor / outdoor air temperature after the operation of one or more selected indoor units falls within the tolerance range of the performance measurement temperature. When a predetermined operation button is pressed on one of the remote controllers of one of the indoor units and one or more of the selected indoor unit and outdoor unit selected for operation of the multi-room air conditioner The outdoor fan rotational speed and the operating frequency are fixed, or the outdoor fan rotational speed and the indoor / outdoor expansion valve opening are fixed. As a result, when the outdoor fan speed and operating frequency are fixed, only the indoor / outdoor expansion valve opening is changed, and when the outdoor fan speed and indoor / outdoor expansion valve opening are fixed, only the operating frequency is changed. Time to reach temperature is shortened.

  The multi-room air conditioner according to claim 4 is one or more selected for operation after the indoor / outdoor air temperature after the operation of one or more selected indoor units is within the tolerance of the performance measurement temperature. After pressing a predetermined operation button on one of the remote controllers of one of the indoor units and one or more of the indoor units and outdoor units selected for operation of the remote controller or the multi-room air conditioner When a predetermined time elapses, control parameters (compressor operating frequency, indoor / outdoor expansion valve opening, outdoor fan rotation speed) are fixed. Thereby, the time until the target discharge temperature is reached is shortened.

  The multi-room air conditioner of the present invention can reduce performance measurement time and performance test costs.

  According to a first aspect of the present invention, the remote controller of one or more indoor units selected for operation after the indoor / outdoor air temperature after the operation of one or more selected indoor units falls within the tolerance range of the performance measurement temperature One of the remote controller or the operation of the multi-room air conditioner, when one of the selected indoor unit and the outdoor unit is pressed, the operation frequency of the compressor Is fixed, only the changes in the indoor / outdoor expansion valve opening and the outdoor fan rotation speed are made, the time until the target discharge temperature is reached is shortened, and the performance measurement time can be shortened.

According to a second aspect of the present invention, the remote controller of one or more indoor units selected for operation after the indoor / outdoor air temperature after operation of the one or more selected indoor units is within the tolerance range of the performance measurement temperature. One of the remote controller or the multi-room air conditioner is selected to operate the indoor / outdoor expansion valve when a predetermined operation button on one of the selected one or more indoor unit bodies and outdoor unit body is pressed. Since the degree is fixed, only the operation frequency of the compressor and the outdoor fan rotation speed are changed, the time until the target discharge temperature is reached is shortened, and the performance measurement time can be shortened.

  According to a third aspect of the present invention, the remote controller for one or more indoor units selected for operation after the indoor / outdoor air temperature after operation of the one or more selected indoor units is within the tolerance range of the performance measurement temperature. When one of the remote controller or the multi-room air conditioner is selected and one of the selected indoor unit main body and a predetermined operation button of the outdoor unit main body is pressed, When the operating frequency is fixed or the outdoor fan speed and the indoor / outdoor expansion valve opening are fixed, if the outdoor fan speed and the operating frequency are fixed, only the indoor / outdoor expansion valve opening is changed, the outdoor fan speed When the opening degree of the indoor / outdoor expansion valve is fixed, only the operating frequency is changed, the time until the target discharge temperature is reached is shortened, and the performance measurement time can be shortened.

  According to a fourth aspect of the present invention, the remote controller of one or more indoor units selected for operation after the indoor / outdoor air temperature after operation of the one or more selected indoor units falls within the tolerance range of the performance measurement temperature One of the remote controller or the operation of the multi-room air conditioner, when a predetermined time has elapsed since a predetermined operation button of one of the one or more indoor unit main bodies and the outdoor unit main body is selected, By fixing the control parameters (compressor operating frequency, indoor / outdoor expansion valve opening, outdoor fan speed), the time to reach the target discharge temperature is shortened, and the performance measurement time is shortened. be able to.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is a refrigeration cycle diagram of a multi-room air conditioner according to first to fourth embodiments of the present invention. In FIG. 1, reference numerals 1 to 21 are exactly the same as those of a conventional multi-room air conditioner, and the description thereof is omitted. FIG. 2 is a flowchart showing a control procedure when operating the multi-room air conditioner according to Embodiment 1 of the present invention, and S1 to S8 show each operation step.

  In FIG. 2, when the multi-room air conditioner 1 is operated, normal operation is performed (S1). When the temperature of the indoor / outdoor air conditioning at the time of performance measurement is determined in S2, and it is determined that the indoor / outdoor air temperature is outside the tolerance range of the performance measurement temperature, the operating frequency of the compressor 2 and the outdoor expansion are determined in S3. The opening degree of the valve 5 or the indoor expansion valves 21a to 21d and the rotational speed of the outdoor fan 10 are changed, and the normal operation mode of S1 is set. On the other hand, when it is determined in S2 that the indoor / outdoor air temperature is within the tolerance range of the performance measurement temperature, in S4, one of the remote controllers 17a to 17d of the one or more indoor units 16a to 16d selected for operation is selected. When a predetermined operation button of one of the one or more indoor unit main bodies 16a to 16d and the outdoor unit main body 19 selected for operation of one remote controller or the multi-room air conditioner 1 is pressed, the compressor 2 The operating frequency of the outdoor expansion valve 5 or the indoor expansion valves 21a to 21d and the rotational speed of the outdoor fan 10 are changed (S5). In S6, the discharge temperature is determined. If the target discharge temperature has not been reached, the process returns to S5. On the other hand, when the target discharge temperature is reached in S6, the opening degree of the outdoor expansion valve 5 and the indoor expansion valves 21a to 21d and the rotational speed of the outdoor fan 10 are fixed in S7. In S8, performance measurement is performed.

As described above, in the present embodiment, after the indoor / outdoor air temperature after operation of the main body 1 is within the tolerance range of the performance measurement temperature, the operation of one or more indoor units 16a to 16d selected for operation. Predetermined operation of one of the remote controllers 17a to 17d or one of the selected one or more indoor unit bodies 16a to 16d and the outdoor unit body 19 selected for operation of the multi-room air conditioner 1 When the button is pressed, the operating frequency of the compressor 2 is fixed, so that only the opening of the outdoor expansion valve 5 or the indoor expansion valves 21a to 21d and the rotation speed of the outdoor fan 10 are changed, and the target discharge temperature is reached. Time can be shortened, and the performance measurement time can be shortened.

(Embodiment 2)
FIG. 3 is a flowchart showing a control procedure when the multi-room air conditioner according to Embodiment 2 of the present invention is operated, and S11 to S18 indicate each operation step.

  In FIG. 3, when the multi-room air conditioner 1 is operated, normal operation is performed (S11). When the temperature of the indoor / outdoor air conditioning during performance measurement is determined in S12, and the indoor / outdoor air temperature is determined to be outside the tolerance range of the performance measurement temperature, the operating frequency of the compressor 2 and the outdoor expansion are determined in S13. The opening degree of the valve 5 or the indoor expansion valves 21a to 21d and the rotation speed of the outdoor fan 10 are changed, and the normal operation mode of S11 is set. On the other hand, if it is determined in S12 that the indoor / outdoor air temperature is within the tolerance range of the performance measurement temperature, in S14, one of the remote controllers 17a to 17d of the one or more indoor units 16a to 16d selected for operation is selected. When a predetermined operation button of one of the one or more indoor unit main bodies 16a to 16d and the outdoor unit main body 19 selected for operation of one remote controller or the multi-room air conditioner 1 is pressed, the outdoor expansion valve 5 and the openings of the indoor expansion valves 21a to 21d are fixed, and the operating frequency of the compressor 2 and the rotational speed of the outdoor fan 10 are changed (S15). In S16, the discharge temperature is determined, and if the target discharge temperature has not been reached, the process returns to S15. On the other hand, if the target discharge temperature has been reached in S16, the operating frequency of the compressor 2 and the rotational speed of the outdoor fan 10 are fixed in S17. In S18, performance measurement is performed.

  As described above, in the present embodiment, after the indoor / outdoor air temperature after operation of the main body 1 is within the tolerance range of the performance measurement temperature, the operation of one or more indoor units 16a to 16d selected for operation. One remote controller of the remote controllers 17a to 17d or one or more indoor unit main bodies 16a to 16d selected for one operation of the multi-room air conditioner and a predetermined operation button on one of the outdoor unit main bodies 19 When is pressed, the opening of the outdoor expansion valve 5 or the indoor expansion valves 21a to 21d is fixed, so that only the operating frequency of the compressor 2 and the rotation speed of the outdoor fan 10 are changed, and until the target discharge temperature is reached. Time can be shortened, and the performance measurement time can be shortened.

(Embodiment 3)
FIG. 4 is a flowchart showing a control procedure when operating the multi-room air conditioner according to Embodiment 3 of the present invention, and S21 to S28 show each operation step.

In FIG. 4, when the multi-room air conditioner 1 is operated, normal operation is performed (S21). When the temperature of the indoor / outdoor air conditioner at the time of performance measurement is determined in S22 and it is determined that the indoor / outdoor air temperature is outside the tolerance range of the performance measurement temperature, the operating frequency of the compressor 2 and the expansion valve are determined in S23. 5 or the opening degree of the indoor expansion valves 21a to 21d and the rotation speed of the outdoor fan 10 are changed, and the normal operation mode of S21 is set. On the other hand, when it is determined in S22 that the indoor / outdoor air temperature is within the tolerance of the performance measurement temperature, in S24, one of the remote controllers 17a to 17d of the one or more indoor units 16a to 16d selected for operation is selected. When a predetermined operation button of one of the one or more indoor unit main bodies 16a to 16d and the outdoor unit main body 19 selected for operation of one remote controller or the multi-room air conditioner 1 is pressed, the outdoor fan 10 And the operating frequency of the compressor 2 are fixed, and only the opening of the outdoor expansion valve 5 or the indoor expansion valves 21a to 21d is changed (S25a), or the rotational speed of the outdoor fan 10 and the outdoor expansion valve 5 and the indoor The opening degree of the expansion valves 21a to 21d is fixed, and only the operating frequency of the compressor 2 is changed (S25b). In S26, the discharge temperature is determined. If the target discharge temperature has not been reached, the process returns to S25a or S25b. On the other hand, if the target discharge temperature has been reached in S25a, the openings of the outdoor expansion valve 5 and the indoor expansion valves 21a to 21d are fixed in S27. If the target discharge temperature is reached in S25b, the operating frequency of the compressor 2 is fixed in S27. In S28, performance measurement is performed.

  As described above, in the present embodiment, after the indoor / outdoor air temperature after operation of the main body 1 is within the tolerance range of the performance measurement temperature, the operation of one or more indoor units 16a to 16d selected for operation. Predetermined operation of one of the remote controllers 17a to 17d or one of the selected one or more indoor unit bodies 16a to 16d and the outdoor unit body 19 selected for operation of the multi-room air conditioner 1 When the button is pressed, the rotational speed of the outdoor fan 10 and the operating frequency of the compressor 2 are fixed, or the rotational speed of the outdoor fan 10 and the openings of the outdoor expansion valve 5 and the indoor expansion valves 21a to 21d are fixed. When the rotational speed of the outdoor fan 10 and the operating frequency of the compressor 2 are fixed, only the opening of the outdoor expansion valve 5 or the indoor expansion valves 21a to 21d is changed, the rotational speed of the outdoor fan 10 and the outdoor expansion valve 5, If the opening of the inner expansion valve 21a~21d is fixed should be changed only operation frequency of the compressor 2, it reduces the time to reach the target discharge temperature, it is possible to shorten the performance measurement time.

(Embodiment 4)
FIG. 5 is a flowchart showing a control procedure when the multi-room air conditioner according to Embodiment 4 of the present invention is operated, and S31 to S35 show each operation step.

  In FIG. 5, when the multi-room air conditioner 1 is operated, normal operation is performed (S31). When the temperature of the indoor / outdoor air conditioning during performance measurement is determined in S32 and it is determined that the indoor / outdoor air temperature is outside the tolerance range of the performance measurement temperature, the operation frequency of the compressor 2 and the outdoor expansion are determined in S33. The opening degree of the valve 5 or the indoor expansion valves 21a to 21d and the rotation speed of the outdoor fan 10 are changed, and the normal operation mode of S31 is set. On the other hand, when it is determined in S32 that the indoor / outdoor air temperature is within the tolerance of the performance measurement temperature, in S34, one of the remote controllers 17a to 17d of the one or more indoor units 16a to 16d selected for operation is selected. After pressing a predetermined operation button of one of the one or more indoor unit main bodies 16a to 16d and the outdoor unit main body 19 selected for operation of one remote controller or the multi-room air conditioner 1, in S35, When the predetermined time has elapsed, the operation step after point A in FIG. 2, the operation step after point B in FIG. 3, the operation step after point C in FIG. 4, and the operation step after point D in FIG. By fixing the compressor operating frequency, indoor / outdoor expansion valve opening, and outdoor fan speed, the time to reach the target discharge temperature is shortened. It is possible to shorten the certain time.

  As described above, the multi-room air conditioner according to the present invention can reduce the capacity measurement time during the cooling / heating capacity test. It can also be used for machine applications.

Refrigeration cycle diagram of multi-room air conditioner according to Embodiments 1 to 4 of the present invention The flowchart which shows the control procedure in the case of operating the multi-room air conditioner in Embodiment 1 of this invention. The flowchart which shows the control procedure in the case of operating the multi-room air conditioner in Embodiment 2 of this invention. The flowchart which shows the control procedure in the case of operating the multi-room air conditioner in Embodiment 3 of this invention. The flowchart which shows the control procedure in the case of operating the multi-room air conditioner in Embodiment 4 of this invention. Refrigeration cycle diagram of a conventional multi-room air conditioner The flowchart which shows the control procedure in the case of operating the conventional multi-room type air conditioner

Explanation of symbols

1 Multi-room air conditioner (main unit)
DESCRIPTION OF SYMBOLS 2 Compressor 3 Four-way valve 4 Outdoor heat exchanger 5 Outdoor expansion valve 6a-6d Indoor heat exchanger 7 Refrigerant piping 8 Receiver 9 Discharge temperature sensor 10 Outdoor fan 11 Outdoor heat exchanger temperature sensor 12a-12d Indoor fan 13a-13d Indoor heat AC temperature sensor 14a-14d Indoor suction temperature sensor 15a-15d Indoor controller 16a-16d Indoor unit 17a-17d Remote controller (wireless remote controller or wired remote controller)
18 outdoor controller 19 outdoor unit 20 outdoor suction temperature sensor 21a to 21d indoor expansion valve

Claims (4)

One outdoor unit and a plurality of indoor units connected to the outdoor unit, the outdoor unit including a compressor, a four-way valve, an outdoor heat exchanger, an outdoor expansion valve, and at least the compressor A discharge temperature detecting means provided on the refrigerant outflow side, an outdoor heat exchange temperature detecting means provided at a predetermined position of the outdoor heat exchanger, and an outdoor suction temperature detecting means provided at a predetermined position on the windward side of the outdoor heat exchanger. The plurality of indoor units are each provided with an indoor heat exchanger and an indoor expansion valve, and at least an indoor heat exchanger temperature detecting means provided at a predetermined position of the indoor heat exchanger, and a predetermined upstream side of the indoor heat exchanger. In a multi-room air conditioner having an indoor suction temperature detecting means provided at a position, the indoor / outdoor air temperature after the operation of one or more selected indoor units of the multi-room air conditioner is within a predetermined tolerance range After entering, was selected for driving One of the remote controllers of one or more indoor units or a predetermined operation button of one main body of one or more indoor unit main bodies and outdoor unit main bodies selected for operation of the multi-room air conditioner A multi-room air conditioner characterized in that, when pressed, the operating frequency of the compressor is fixed. One outdoor unit and a plurality of indoor units connected to the outdoor unit, the outdoor unit including a compressor, a four-way valve, an outdoor heat exchanger, an outdoor expansion valve, and at least the compressor A discharge temperature detecting means provided on the refrigerant outflow side, an outdoor heat exchange temperature detecting means provided at a predetermined position of the outdoor heat exchanger, and an outdoor suction temperature detecting means provided at a predetermined position on the windward side of the outdoor heat exchanger. The plurality of indoor units are each provided with an indoor heat exchanger and an indoor expansion valve, and at least an indoor heat exchanger temperature detecting means provided at a predetermined position of the indoor heat exchanger, and a predetermined upstream side of the indoor heat exchanger. In a multi-room air conditioner having an indoor suction temperature detecting means provided at a position, the indoor / outdoor air temperature after the operation of one or more selected indoor units of the multi-room air conditioner is within a predetermined tolerance range After entering, was selected for driving One of the remote controllers of one or more indoor units or a predetermined operation button of one main body of one or more indoor unit main bodies and outdoor unit main bodies selected for operation of the multi-room air conditioner A multi-room air conditioner characterized in that, when pressed, the opening degree of the indoor / outdoor expansion valve is fixed. After the indoor / outdoor air temperature after the operation of one or more selected indoor units of the multi-room air conditioner falls within a predetermined tolerance, the remote controller of one or more indoor units selected for operation One of the remote controller or multi-room air conditioner selected one or more of the selected indoor unit main unit and outdoor unit main unit, when a predetermined operation button is pressed, it passes through the outdoor heat exchanger The multi-room air conditioner according to claim 1 or 2, wherein the rotational speed of the outdoor fan that generates the air flow is fixed. After the indoor / outdoor air temperature after the operation of one or more selected indoor units of the multi-room air conditioner falls within a predetermined tolerance, the remote controller of one or more indoor units selected for operation One of the remote controller or multi-room air conditioner is selected for operation after pressing a predetermined operation button on one of the selected one or more indoor unit main units and outdoor unit main unit. The multi-room air conditioner according to any one of claims 1 to 3, wherein the multi-room air conditioner is performed after a lapse of time.