JP5018190B2 - Multi-room air conditioner - Google Patents

Description

  The present invention relates to a control device for a multi-room air conditioner.

  In an air conditioner equipped with this type of conventional electric dust collection type air purifier, electricity is supplied to the charging unit that charges particles in the air in conjunction with the operation of the indoor blower, and the indoor blower is stopped. Is controlled so that energization is not performed. In order to protect the charged part, when the ambient temperature exceeds a certain value, it is controlled not to energize for a certain period of time.

On the other hand, in a multi-room type air conditioner, an indoor unit that is stopped during heating operation is configured so that a small amount of refrigerant always flows while the indoor fan is stopped in order to prevent refrigerant from accumulating in the indoor heat exchanger. Although the room temperature cannot be accurately detected due to the influence of radiant heat from the indoor heat exchanger, the air temperature is controlled at a certain interval for a short time to detect the accurate room temperature. (For example, refer to Patent Document 1).
JP-A-2005-024111

  However, in the conventional air conditioner, the heating stop unit recognizes that the room temperature is actually low due to the influence of radiation, and stops energization of the charging unit for a certain period of time. Even if the room temperature sampling control correctly detects the room temperature, the heating operation is started and the blower is operated, the charging unit is not energized for a certain period of time, so the air cleaning function does not function during that time. .

  The present invention solves the above-mentioned conventional problems, and is provided with a multi-room air conditioner provided with a de-energization control for a certain period of time so as not to energize the charging part for a certain period of time when the room temperature is high In the thermo-off state, the indoor unit does not energize the charging unit, and at the same time, by ignoring the de-energization control for a certain period of time based on the detected temperature when the indoor fan is intermittently operated to detect the indoor temperature, An object of the present invention is to provide an air conditioner that improves the operation rate of the machine function and improves the reliability of the equipment.

In order to solve the conventional problems, a compressor, an outdoor heat exchanger, an outdoor blower, a four-way valve, an outdoor unit having a throttle device, an indoor heat exchanger, an indoor blower, and an indoor temperature detection device are charged. Connects a plurality of indoor units having a dust collection unit that collects particles, a charging unit that charges particles in the air, and a control unit that controls the charging unit. In at least one of the indoor units in the heating operation mode, in the air conditioner having a de-energization control for a certain period of time so that the energization of the charging unit is not performed for a certain period of time when the indoor temperature is high. When the compressor is operated in the thermo-on state and at least one of the other indoor units is in the thermo-off state, the indoor unit in the thermo-off state does not energize the charging unit at the same time. By ignoring the constant time-energization control by the detection temperature at which the indoor air blower and the intermittent operation in order to detect the indoor temperature, the air-conditioning apparatus with improved reliability improvement and equipment operating rate of the air cleaner function Can be provided.

  The air conditioner of the present invention can protect the air purifier charging part due to the influence of the radiant heat of the heat exchanger of the heating stop unit and avoid a decrease in the operating rate of the air purifier due to erroneous detection of the suction temperature. It is possible to provide an air conditioner with improved rate and improved device reliability.

1st invention collects the charged particle | grains, the outdoor unit which has a compressor, an outdoor heat exchanger, an outdoor air blower, a 4-way valve, a throttle device, an indoor heat exchanger, an indoor air blower, an indoor temperature detection device, The indoor temperature is high by connecting a plurality of indoor units having an electric dust collecting type air purifier composed of a dust collecting unit, a charging unit for charging particles in the air, and a control unit for controlling the charging unit. In such a case, the air conditioner is provided with a de-energization control for a certain period of time so as not to energize the charging unit for a certain period of time, and in the heating operation mode, at least one of the indoor units is operated in a thermo-on state. In addition, when at least one of the other indoor units is in the thermo-off state, the indoor unit in the thermo-off state does not energize the charging unit, and at the same time, the indoor blower is intermittently operated to detect the indoor temperature. Time detection By ignoring the de-energization control for a certain period of time, it is possible to protect the air purifier charging part due to the influence of radiant heat of the heat exchanger of the heating stop unit and avoid the reduction of the air purifier operation rate due to erroneous detection of the suction temperature (suction) When it is determined that the temperature is high, for example, a control for stopping the energization for 30 minutes is usually provided. However, in the thermo-off state, the suction temperature is determined to be high due to the radiation of the heat exchanger, and the energization is stopped for 30 minutes.

  On the other hand, in a multi-room air conditioner, room temperature cannot be detected accurately due to the effect of radiation from the heat exchanger. Sampling control), the correct room temperature can be detected after the completion of the sampling control, and the air conditioner starts operation if it is in the thermo-on state. However, since energization to the power supply unit of the air cleaning unit is stopped for 30 minutes, the air cleaner does not function during this period. Therefore, even if it is judged that the temperature is high in the thermo-off state to improve the operating rate, the operating rate of the air purifier is improved by ignoring the control that stops energization for a certain period of time. It is possible to provide an air conditioner with improved and improved device reliability.

The second invention is a compressor, an outdoor heat exchanger, an outdoor fan, a four-way valve, an outdoor unit having a throttle device, an indoor heat exchanger, an indoor fan, an indoor temperature detection device, and collecting charged particles. The indoor temperature is high by connecting a plurality of indoor units having an electric dust collecting type air purifier composed of a dust collecting unit, a charging unit for charging particles in the air, and a control unit for controlling the charging unit. In such a case, the air conditioner is provided with a de-energization control for a certain period of time so as not to energize the charging unit for a certain period of time, and in the heating operation mode, at least one of the indoor units is operated in a thermo-on state. In addition, when at least one of the other indoor units is in a stopped state, and the indoor unit in the stopped state starts operation by a remote controller or the like, the indoor unit energizes the charging unit for a certain time from the start of operation. At the same time By ignoring the de-energization control for a certain period of time based on the knowledge temperature, it is possible to prevent the air purifier charging part from being protected due to the influence of the radiant heat of the heat exchanger of the heating stop unit and the reduction of the air purifier operation rate due to incorrect detection of the suction temperature When it is determined that the suction temperature is high, for example, control for stopping energization for 30 minutes is normally provided. However, in the stopped state, it is determined that the suction temperature is high due to the influence of radiation of the heat exchanger, and power is not supplied for 30 minutes.

  On the other hand, in a multi-room air conditioner, since room temperature cannot be accurately detected due to the influence of radiation from the heat exchanger, the heating stop machine may be started with a remote controller or the like for a certain period of time (for example, 90 seconds) The heating operation is forcibly performed regardless of whether the air temperature is detected during the operation of the blower during this period. However, since energization to the power supply unit of the air cleaning unit is stopped for 30 minutes, the air cleaner does not function during this period. Therefore, to improve the operating rate, stop energization to the air purifier charging part for a certain period of time from the start of operation of the heating stop unit, and at the same time ignore control that stops energization for a certain period of time even if it is judged that the temperature is high Thus, it is possible to provide an air conditioner that improves the operating rate of the air purifier function and improves the reliability of the equipment.

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

( Reference example )
FIG. 1 is an example of a refrigeration cycle diagram of an air conditioner according to an embodiment of a reference example of the present invention, and a plurality of (for example, two) indoor units 9a and 9b are connected to one outdoor unit 1. Is shown. 2 is a perspective view of an air conditioner equipped with an electric dust collection type air cleaner, FIG. 3 is a schematic diagram of a charging unit and a power source of the electric dust collection type air cleaner, and FIG. 4 is a diagram of electricity during general air conditioning operation. It is a flowchart of dust collection type air cleaner control.

  In FIG. 1, an outdoor unit 1 includes an inverter-driven capacity (frequency) variable compressor 2, an outdoor heat exchanger 3, an outdoor blower 4, a refrigerant liquid side main pipe 5, a refrigerant gas side main pipe 6, an air conditioner. A switching four-way valve 7 is provided. The refrigerant liquid side main pipe 5 is provided with an electric expansion valve 8 whose valve opening can be controlled by a stepping motor, for example.

  On the other hand, the indoor units 9a and 9b are provided with indoor fans 10a and 10b and indoor heat exchangers 11a and 11b, respectively. The outdoor unit 1 and the indoor units 9a and 9b are branched from the refrigerant liquid side main pipe 5. The branch pipes 12a and 12b and the gas side branch pipes 13a and 13b branched from the refrigerant gas side main pipe 6 are connected. The liquid side branch pipes 5a and 5b are respectively provided with indoor electric expansion valves 8a and 8b whose pulse opening degree can be controlled by a stepping motor or the like. Further, the indoor units 9a and 9b include indoor suction temperature detectors 14a and 14b that detect the room temperature of the room, indoor heat exchanger temperature detectors 15a and 15b that detect the temperature of the indoor heat exchangers 11a and 11b, and residents. Operation setting devices 16a and 16b capable of setting a desired operation mode (cooling, dehumidification or heating), room temperature, and operation or stop are provided.

  In the refrigeration cycle having the above-described configuration, during cooling or dehumidifying operation, the refrigerant discharged from the compressor 2 flows to the outdoor heat exchanger 3 through the four-way valve 7, and is driven by the outdoor fan 4 by the outdoor fan 4. It exchanges heat with outdoor air to be condensed and liquefied, the electric expansion valve 8 is fully opened, the refrigerant is distributed in the liquid side branch pipes 12a and 12b through the refrigerant liquid side main pipe 5, and the refrigerant is discharged in the indoor electric expansion valves 8a and 8b. After the flow rate is controlled and evaporated by the indoor units 9a and 9b, the gas side branches 13a and 13b join the refrigerant gas side main pipe 6 and are sucked into the compressor 2 again through the four-way valve 7. Since the indoor electric distribution valves 8a and 8b are pulse-controlled by a stepping motor or the like so as to have an opening corresponding to the indoor load, the refrigerant is also controlled at a flow rate corresponding to the indoor load.

  On the other hand, during the heating operation, the refrigerant discharged from the compressor 2 flows to the indoor heat exchangers 11a and 11b through the four-way valve 7, and is driven indoors by the indoor heat exchangers 11a and 11b by driving the indoor fans 10a and 10b. After heat exchange with air, the liquid is condensed and liquefied, joined to the refrigerant liquid side main pipe 5 through the liquid side branch pipes 12a and 12b, flow-controlled by the electric expansion valve 8 and evaporated by the outdoor heat exchanger 3, and then the four-way valve 7 Is again sucked into the compressor 2. Further, in the heating operation, for example, when the indoor unit 9a is operated and the indoor unit 9b is stopped, the indoor electric expansion valve 8b is slightly opened while the indoor blower 10b is stopped in order to prevent refrigerant from being accumulated in the heating stop unit 9b. A small amount of refrigerant always flows.

  Further, in the heating operation, even when the indoor unit 9a is in operation and the indoor unit 9b is in a thermo-off state, the indoor electric expansion valve 8b is slightly opened while the blower 10b is stopped in order to prevent refrigerant from being accumulated in the heating stop unit. Although a small amount of refrigerant is flowing, the indoor suction temperature detector 14b cannot detect the correct room temperature due to the influence of the radiant heat of the stopped indoor heat exchanger 11b. Therefore, as the room temperature sampling control, the indoor fan 10b is turned on at a certain interval. It operates (here, for example, 120 seconds blower stop, 20 seconds blower operation), and the correct temperature is detected.

Next, an electric dust collection type air purifier will be described with reference to FIGS. A charging unit 18 is provided in the vicinity of the blowout port 17 of the indoor unit 9 and discharges ions. The ions released into the room charge particles in the air, are sucked into the indoor unit 9 from the suction port 19 by the indoor blower, and are attached to the charging filter 20 of the dust collecting unit and collected. Further, as shown in FIG. 3, the electrification unit 18 is composed of a needle-like discharge electrode 21 and a counter electrode 22, and a voltage of -6 kV is applied. The high voltage power supply unit 23 that generates this voltage is the wind of the indoor heat exchanger. It is provided on the upper side.

  Next, the flow of control will be described with reference to FIG. If the room is in the heating operation (Y in S4-1) and the room is also in the heating operation (N in S4-2) and the fan is in operation (Y in S4-3) Energization (S4-4) ions are generated in the charged portion. If the blower is stopped (N in S4-3), the charged portion is not energized (S4-5). In the case of the cooling operation (N in S4-0), if the blower is in operation regardless of the operation in the other room (S4-3), the charged portion is energized (S4-4) to generate ions. If the blower is stopped (N in S4-3), the charged portion is not energized (S4-5). When the room is in a thermo-off mode (Y in S4-1) during other room operation in heating operation (Y in S4-2), the charged portion is not energized even if the fan is operated with room temperature sampling control (S4-7).

  As described above, in the present embodiment, in the heating operation mode, at least one of the indoor units is in a thermo-on state and the compressor is operated, and at least one of the other indoor units is in a thermo-off state, This indoor unit in the thermo-off state does not energize the charging unit, so that it is possible to protect the charging unit of the air purifier due to the radiant heat of the heat exchanger of the heating stop unit, and to improve the reliability of the air conditioner It becomes possible to provide.

( Embodiment 1 )
Embodiment 1 of the present invention will be described. FIG. 5 is a flowchart of electric dust collection type air purifier control during the cooling / heating operation when the intake temperature of indoor air is high. Since the refrigeration cycle diagram of the air conditioner according to the present invention, the schematic diagram of the air conditioner equipped with the electric dust collecting type air cleaner, the charging unit and the power supply diagram are the same as the reference example , the description thereof will be omitted.

  Next, the flow of control will be described with reference to FIG. If the room is also operating in the other room (Y in S5-1) in the heating operation (Y in S5-1) and the fan is operating in the heating operation (N in S5-2) and the fan is in operation (Y in S5-3), energize the charged part ( S5-4) Ions are generated. If the blower is stopped (N in S5-3), the charged portion is not energized (S5-5). However, when the suction temperature exceeds 40 ° C. (Y in S5-6), the energization is stopped for 30 minutes from the time when it exceeds (S5-7). In the cooling operation (S5-8), if the blower is in operation regardless of the other-room operation (Y in S5-3), the charged portion is energized (S5-4) to generate ions. If the blower is stopped (N in S5-3), the charged portion is not energized (S5-5).

  If the room is in a thermo-off mode (Y in S5-2) while the other room is operating in the heating operation (Y in S5-2), the charged part is not energized (S5-9) and sucked even if the fan is operated with room temperature sampling control Even if the temperature exceeds 40 ° C. (Y in S5-10), the control for stopping energization to the charged portion for 30 minutes is not activated (S5-11).

  As described above, in the present embodiment, in the heating operation mode, at least one of the indoor units is in a thermo-on state and the compressor is operated, and at least one of the other indoor units is in a thermo-off state, This thermo-off indoor unit does not energize the charging unit, and at the same time ignores the de-energization control for a certain period of time based on the detected temperature when the indoor fan is intermittently operated to detect the indoor temperature, thereby stopping the heating unit It is possible to protect the air cleaner charged part due to the influence of the radiant heat of the heat exchanger and to prevent the air cleaner operating rate from decreasing due to erroneous detection of the suction temperature.

  That is, when it is determined that the suction temperature is high, for example, control is normally provided to stop energization for 30 minutes. However, in the thermo-off state, it is determined that the suction temperature is high due to the radiation of the heat exchanger, and power is not supplied for 30 minutes. On the other hand, in a multi-room air conditioner, room temperature cannot be detected accurately due to the effect of radiation from the heat exchanger. Sampling control), the correct room temperature can be detected after the completion of the sampling control, and the air conditioner starts operation if it is in the thermo-on state. However, since energization to the power supply unit of the air cleaning unit is stopped for 30 minutes, the air cleaner does not function during this period. Therefore, even if it is determined that the temperature is high in the thermo-off state in order to improve the operation rate, the operation rate of the air cleaner is improved by ignoring the control for stopping energization for a certain period of time.

  Therefore, it is possible to provide an air conditioner that improves the operating rate of the air purifier function and improves the reliability of the equipment.

( Embodiment 2 )
A second embodiment of the present invention will be described. FIG. 6 is a flowchart of electric dust collection type air purifier control during air-conditioning operation when the indoor air suction temperature is high. Since the refrigeration cycle diagram of the air conditioner according to the present invention, the schematic diagram of the air conditioner equipped with the electric dust collecting type air cleaner, the charging unit and the power supply diagram are the same as the reference example , the description thereof will be omitted.

  Next, the flow of control will be described with reference to FIG. When the heating operation is started in the other room (Y in S6-1) during the heating operation (Y in S6-2), the energization of the charging unit is stopped for 2 minutes (N in S6-3 and 6-4). During this time, even if the suction temperature exceeds 40 ° C. (Y in S6-5), the control for stopping energization for 30 minutes from the time when the suction temperature is exceeded is not activated (step 6-6). If it exceeds 2 minutes from the start of operation (Y in S6-4), if the blower is in operation (Y in S6-7), the charged portion is energized (S6-8) to generate ions. If the blower is stopped (N in S6-7), the charged portion is not energized (S6-9). However, if the suction temperature exceeds 40 ° C. during energization of the charged part (S6-8) (Y of S6-10), the energization is stopped for 30 minutes from the time of exceeding (S6-11). In the cooling operation (S6-12), if the blower is operating (Y in S6-7) regardless of the other-room operation (Y in S6-7), the charged portion is energized (S6-8) to generate ions. If the blower is stopped (N in S6-7), the charged portion is not energized (S6-9).

  As described above, in the present embodiment, in the heating operation mode, when at least one of the indoor units is in a thermo-on state and the compressor is operated, and at least one of the other indoor units is in a stopped state, When this stopped indoor unit starts operation with a remote controller or the like, the indoor unit does not energize the charging unit for a certain period of time from the start of operation, and at the same time, by ignoring the de-energization control for a certain period of time based on the detected temperature, It is possible to avoid a reduction in the operating rate of the air purifier due to the protection of the air purifier charging part due to the influence of the radiant heat of the heat exchanger of the heating stop unit and the erroneous detection of the suction temperature.

  That is, when it is determined that the suction temperature is high, for example, control for stopping the energization for 30 minutes is normally provided. However, in the stopped state, it is determined that the suction temperature is high due to the radiation of the heat exchanger, and the energization is not performed for 30 minutes. On the other hand, in a multi-room air conditioner, since room temperature cannot be accurately detected due to the influence of radiation from the heat exchanger, the heating stop machine may be started with a remote controller or the like for a certain period of time (for example, 90 seconds) The heating operation is forcibly performed regardless of whether the air temperature is detected during the operation of the blower during this period. However, since energization to the power supply unit of the air cleaning unit is stopped for 30 minutes, the air cleaner does not function during this period. Therefore, to improve the operating rate, stop energization to the air purifier charging part for a certain period of time from the start of operation of the heating stop unit, and at the same time ignore control that stops energization for a certain period of time even if it is judged that the temperature is high As a result, the operating rate of the air cleaner is improved.

  Therefore, it is possible to provide an air conditioner that improves the operating rate of the air purifier function and improves the reliability of the equipment.

  As described above, the air conditioner according to the present invention can be applied not only to home use but also to a multi-room air conditioner for buildings.

Refrigeration cycle diagram of the air conditioner in Embodiments 1 and 2 and Reference Example The perspective view of the air conditioning apparatus in Embodiment 1 , 2 , and a reference example Schematic diagram of charging section and power source of electric dust collecting type air cleaner in Embodiments 1 and 2 and Reference Example Flow chart of air conditioner in reference example Flowchart of air conditioner in Embodiment 1 Flowchart of the air conditioner in the second embodiment

DESCRIPTION OF SYMBOLS 1 Outdoor unit 2 Compressor 3 Outdoor heat exchanger 5 Outdoor blower 6 Outdoor gas pipe 7 Four way valve 8 Throttle device 9 Indoor unit 10 Indoor blower 15 Indoor suction temperature detection device 18 Charging part unit 20 Dust collection part (charging filter)

Claims (2)

Compressor, outdoor heat exchanger, outdoor fan, four-way valve, outdoor unit having a throttle device, indoor heat exchanger, indoor fan, indoor temperature detector, dust collector and air for collecting charged particles When a plurality of indoor units having an electrostatic precipitator type air purifier composed of a charging unit for charging particles therein and a control unit for controlling the charging unit are connected and at least the room temperature is high In the air conditioner having a de-energization control for a certain period of time so as not to energize the charging unit for a certain period of time, in the heating operation mode, at least one of the indoor units is in a thermo-on state and the compressor is operated. In the case where at least one of the other indoor units is in a thermo-off state, the indoor unit in the thermo-off state does not energize the charging unit and at the same time detects the room temperature. Multiple room air conditioner which is characterized by ignoring certain time-energization control by the detected temperature when the blower was intermittent operation. Compressor, outdoor heat exchanger, outdoor fan, four-way valve, outdoor unit having a throttle device, indoor heat exchanger, indoor fan, indoor temperature detector, dust collector and air for collecting charged particles When a plurality of indoor units having an electrostatic precipitator type air purifier composed of a charging unit for charging particles therein and a control unit for controlling the charging unit are connected and at least the room temperature is high In the air conditioner having a de-energization control for a certain period of time so as not to energize the charging unit for a certain period of time, in the heating operation mode, at least one of the indoor units is in a thermo-on state and the compressor is operated. In the case where at least one of the other indoor units is in a stopped state, when the stopped indoor unit is started by a remote controller or the like, the indoor unit is moved to the charging unit for a certain time from the start of the operation. Simultaneously Without energizing, multi-room air conditioner which is characterized by ignoring certain time-energization control by the detected temperature.