JPWO2016170578A1 - Refrigeration cycle equipment - Google Patents

Abstract

A compressor having a compressor motor, an outdoor heat exchanger, an expansion valve, and an indoor heat exchanger are connected to each other via a refrigerant pipe, a control device that controls the operation of the refrigerant circuit, and air is sent to the control device The refrigeration cycle apparatus having a fan includes a heating control unit that supplies current to the compressor motor when the power is turned on to perform energization and a fan control unit that operates the fan when energized. Yes.

Description

  The present invention relates to a refrigeration cycle apparatus that performs air conditioning or the like by circulating a refrigerant.

  In the conventional refrigeration cycle apparatus, the heat capacity of the compressor is often larger than the heat capacity of the outdoor heat exchanger, and in this case, the temperature change rate relative to the change in the outdoor air temperature is higher in the compressor than in the outdoor heat exchanger. Becomes slower. Therefore, when the outside air temperature rises, the temperature of the compressor becomes lower than that of the outdoor heat exchanger. Since the refrigerant flows from the higher temperature side to the lower side, the refrigerant accumulates in the compressor with a relatively low temperature after a certain period of time during initial installation or when the power is turned off. There is. If the refrigerant accumulates in the compressor and the terminals inside the compressor are immersed in the liquid refrigerant, insulation cannot be ensured.

  Therefore, conventionally, in order to suppress the accumulation of refrigerant in the compressor, a method of heating the stopped compressor before the start of operation has been adopted. As a method of heating the compressor before the start of operation, a method of energizing an electric heater wound around the compressor is known. A method is also known in which a high-frequency low voltage is applied to a coil of an electric motor installed in a compressor, and heating is performed by heat generated in the coil without rotating the electric motor (see, for example, Patent Document 1).

JP2012-122589A

  However, the amount of refrigerant accumulated in the compressor cannot be confirmed from the outside. For this reason, in the refrigeration cycle apparatus of Patent Document 1, the time required for the refrigerant inside the compressor to evaporate from the full state to the state where the terminal is not immersed is set as the heating time of the compressor before the start of operation. . In addition, since the substrate of the control device provided in the refrigeration cycle apparatus generates heat due to restraint energization, and the temperature of the substrate rises as the output current of restraint energization increases, conventionally, the restraint energization with a constant output current has occurred. It is carried out. That is, the conventional refrigeration cycle apparatus has a problem in that the time during which the compressor cannot be driven becomes long during initial installation or when the power is turned on after the stop, resulting in a decrease in operating efficiency. For this reason, a refrigeration cycle apparatus that shortens the heating time of the compressor before the start of operation is desired.

  The present invention has been made to solve the above problems, and is required for evaporating the refrigerant accumulated in the compressor at the time of initial installation or when a certain period of time has passed since the power was turned off. It aims at providing the refrigerating-cycle apparatus which shortens time.

  A refrigeration cycle apparatus according to the present invention controls a refrigerant circuit in which a compressor having a compressor motor, an outdoor heat exchanger, an expansion valve, and an indoor heat exchanger are connected via a refrigerant pipe, and the operation of the refrigerant circuit. The control device includes a control device and a fan that blows air to the control device, and the control device supplies a current to the compressor motor when the power is turned on to perform energization and a fan control unit that operates the fan when energization is performed And.

  According to the present invention, since the fan control unit is configured to operate the fan when the power is turned on, it is possible to suppress an increase in the substrate temperature of the control device. When the period elapses, the time required for evaporating the refrigerant accumulated in the compressor can be shortened.

It is a schematic diagram which shows the refrigerant | coolant circulation path and control structure of the refrigerating-cycle apparatus which concerns on embodiment of this invention. It is explanatory drawing which shows the time change of the state of restraint electricity supply and substrate temperature in case the control apparatus of the refrigerating-cycle apparatus of FIG. 1 performs time-shortening operation | movement. It is explanatory drawing which shows the state of restraint electricity supply in case the control apparatus of the refrigerating-cycle apparatus of FIG. 1 performs time-shortening operation | movement, and the time change of a substrate temperature and the rotation speed of a fan. It is a flowchart which shows the operation | movement of the restricted energization driving | operation by the refrigeration cycle apparatus of FIG. It is a schematic diagram which shows the refrigerant | coolant circulation path and control structure of the refrigeration cycle apparatus which concerns on the modification of embodiment of this invention. It is a flowchart which shows the operation | movement of the restricted energization driving | operation by the refrigeration cycle apparatus of FIG.

Embodiment.
FIG. 1 is a schematic diagram showing a refrigerant circulation path and a control configuration of a refrigeration cycle apparatus according to an embodiment of the present invention. As shown in FIG. 1, the refrigeration cycle apparatus 50 includes an indoor unit 41 and an outdoor unit 42, and the indoor unit 41 and the outdoor unit 42 are connected by a refrigerant pipe.

  The indoor unit 41 is composed of, for example, an electromagnetic valve, and includes a plurality of expansion valves 10A and 10B that depressurize the refrigerant, and a plurality of indoor heat exchangers 12A and 12B. Each said structure which the indoor unit 41 has is connected by refrigerant | coolant piping. The indoor unit 41 is disposed in the indoor heat exchanger 12A, and detects an indoor liquid pipe temperature sensor 11A and an indoor gas pipe temperature sensor 13A that detect the temperature of the heat transfer pipe of the indoor heat exchanger 12A, and the indoor heat exchanger 12B. And an indoor liquid pipe temperature sensor 11B and an indoor gas pipe temperature sensor 13B that detect the temperature of the heat transfer pipe of the indoor heat exchanger 12B.

  The outdoor unit 42 includes a compressor 1 that compresses refrigerant, an oil separator 3 that separates refrigerant discharged from the compressor 1 and refrigeration oil, a four-way switching valve 4 that switches a refrigerant flow path, and refrigerant and outside air. The first stationary valve 9 that opens and closes the refrigerant flow path between the outdoor heat exchanger 5 that exchanges heat with the gas, the gas-liquid separator 8 that prevents the liquid refrigerant from returning to the compressor 1, and the indoor unit 41. And a second stationary valve 14. The oil separator 3 is installed downstream of the discharge side piping of the compressor 1. The gas-liquid separator 8 is installed upstream of the suction side piping of the compressor 1.

  The outdoor unit 42 has an oil return circuit 16 that returns the refrigeration oil separated from the refrigerant in the oil separator 3 to the suction side of the compressor 1. The oil return circuit 16 is provided on the downstream side of the oil separator 3, and is connected to a compressor suction pipe 15 that connects the compressor 1 and the gas-liquid separator 8. The oil return circuit 16 has a capillary tube 17 that serves as a resistance in the flow path from the oil separator 3 to the compressor suction pipe 15. Each said structure which the outdoor unit 42 has is connected by refrigerant | coolant piping.

  The outdoor unit 42 is provided on the upper portion of the body of the compressor 1, and includes a compressor temperature sensor 2 that detects the temperature of refrigerant discharged from the compressor 1, an outdoor air temperature sensor 6 that detects the temperature of outdoor air, and outdoor heat. An outdoor liquid tube temperature sensor 7 that is provided in the exchanger 5 and detects the temperature of the heat transfer tube of the outdoor heat exchanger 5, and a substrate temperature sensor 22 that detects a substrate temperature Td of the control device 20 described later. Yes.

  The compressor 1 has a check valve 18 that prevents backflow on the refrigerant discharge side. Therefore, the refrigerant and the refrigerating machine oil can flow from the discharge side of the compressor 1 toward the four-way switching valve 4, but cannot flow from the four-way switching valve 4 toward the discharge side of the compressor 1. The compressor 1 has a compressor motor 19, and the compressor motor 19 functions as a heating unit that heats the inside while the compressor 1 is stopped.

  As described above, the refrigeration cycle apparatus 50 includes the compressor 1 having the compressor motor 19, the outdoor heat exchanger 5, the expansion valves 10A and 10B, and the indoor heat exchangers 12A and 12B via the refrigerant pipe. It has a connected refrigerant circuit. Further, the refrigeration cycle apparatus 50 can use the R410A refrigerant and the R32 refrigerant whose melting performance is similar to each other.

  The refrigeration cycle apparatus 50 includes a microcomputer such as a DSP in the outdoor unit 42, and includes a control device 20 that controls the operation of the refrigerant circuit, a fan 28 that blows air to the control device 20 and cools the control device 20, and a fan. A fan motor 29 for driving the motor 28 and an operation unit 30 for receiving various operations from the outside. The control device 20 controls operations of the compressor 1, the four-way switching valve 4, the expansion valve 10 </ b> A, the expansion valve 10 </ b> B, and the fan 28.

  The control device 20 includes a heating control unit 21 that supplies a current to the compressor motor 19 and energizes the compressor motor 19 when the power is turned on. More specifically, the heating control unit 21 applies a voltage to the compressor 1 so that the compressor 1 is not driven when the compressor 1 is stopped, that is, the winding of the compressor motor 19 by the inverter. The compressor motor 19 is heated by supplying a current to and energizing the compressor.

  In the present embodiment, an outdoor fan that promotes heat exchange between the refrigerant flowing in the outdoor heat exchanger 5 and the outside air is used as the fan 28. The operation unit 30 has a function of transmitting a time reduction command to the control device 20 when an operation (time reduction operation) for shortening the time required for energization is received. More specifically, the operation unit 30 has a switch (not shown) that accepts a short-time operation. Here, the operation in which the control device 20 controls the rotation speed of the fan motor 29 and the output current (output value) of the restriction energization supplied to the compressor motor 19 in order to shorten the time required for the restriction energization is referred to as a time-shortening operation. . The time reduction command is a signal for instructing the start of the time reduction operation.

  The control device 20 is electrically connected to each of the four-way switching valve 4, the expansion valve 10 </ b> A, the expansion valve 10 </ b> B, and the fan motor 29. The control device 20 is electrically connected to the various temperature sensors provided in the indoor unit 41 and the outdoor unit 42, and is configured to receive detection values of the various temperature sensors. That is, the control device 20 controls the capacity of the compressor 1, the switching control of the four-way switching valve 4, the opening control of the expansion valve 10A and the expansion valve 10B based on the detection values input from various temperature sensors, and The rotational speed control of the fan motor 29 is performed.

  By the way, when the heating control unit 21 starts restraint energization, the substrate of the control device 20 generates heat, and the substrate temperature Td rises. When the substrate temperature Td rises, a disconnection or a crack or the like of a soldered portion on the substrate may occur. For this reason, in the refrigeration cycle apparatus 50, a limit temperature Tx that is an allowable upper limit of the substrate temperature Td is set in advance. That is, the control device 20 has a stop determination unit 23 that transmits a restraint energization stop command to the heating control unit 21 when the substrate temperature Td detected by the substrate temperature sensor 22 reaches the limit temperature Tx. . The heating control unit 21 is configured to stop restraint energization when a stop command is transmitted from the stop determination unit 23.

  The control device 20 also has a fan control unit 24 that controls the operation of the fan 28. That is, the refrigeration cycle apparatus 50 is configured such that the fan control unit 24 drives the fan motor 29 to rotate the fan 28 to cool the control apparatus 20. The fan control unit 24 operates the fan 28 when a time reduction command is transmitted from the operation unit 30 while the compressor 1 is stopped. The heating control unit 21 has a function of increasing the output current of the restraint energization when a time reduction command is transmitted from the operation unit 30. That is, the heating control unit 21 increases the current supplied to the compressor motor 19 when the fan control unit 24 operates the fan 28, and performs energization restraint.

  FIG. 2 is an explanatory diagram showing the state of restraint energization and the time change of the substrate temperature Td when the control device 20 of the refrigeration cycle apparatus 50 executes the time-shortening operation. The relationship between the state and the substrate temperature Td is shown. As shown in FIG. 2, the heating control unit 21 supplies the first current W <b> 1 to the compressor motor 19 when the power is turned on, thereby energizing the compressor.

Heating control unit 21, if the time reduction command from the operation unit 30 is not input, is configured to end the restraint energized when energization time X ₁ has elapsed. The first current W1 is a value that is suppressed so that the substrate temperature Td does not exceed the limit temperature Tx when the fan 28 is not operating. The first current W1 of the present embodiment is set to an upper limit value (limit output value) in a range where the substrate temperature Td does not exceed the limit temperature Tx when the fan 28 is not operating. Energizing time X ₁ is set based on constraint current of the first current W1, the time required to evaporate the refrigerant elaborate reservoir inside the compressor 1.

  Here, as shown in FIG. 2, when the heating control unit 21 performs restraint energization with an excess current Wo larger than the first current W1 in a state where the fan 28 is not operating, the substrate temperature Td Increases to a temperature To higher than the limit temperature Tx. In order to avoid such a situation, the stop determination unit 23 compares the substrate temperature Td detected by the substrate temperature sensor 22 with the limit temperature Tx, and when the substrate temperature Td reaches the limit temperature Tx (Td ≧ Tx), a restraint energization stop command is transmitted to the heating control unit 21.

  FIG. 3 is an explanatory diagram showing a state of restraint energization when the control device 20 of the refrigeration cycle apparatus 50 performs a short-time operation, and a time change in the substrate temperature Td and the rotation speed of the fan. The relationship between the time, the execution state of restraint energization, the substrate temperature Td, and the rotation speed of the fan 28 is shown. As shown in FIG. 3, the fan control unit 24 drives the fan motor 29 to rotate the fan 28 in a preset rotation when a time reduction command is transmitted from the operation unit 30 after the power is turned on (time S1). It is operated with the number Y. When a time reduction command is transmitted from the operation unit 30 (time S1), the heating control unit 21 supplies a second current W2 larger than the first current W1 to the compressor motor 19 to perform energization and compression. The machine motor 19 is heated. That is, the heating control unit 21 compresses the second current W2 larger than the first current W1 when the fan control unit 24 operates the fan 28 after starting energization with the first current W1. It is supplied to the machine motor 19 and energized with restraint.

  When the fan control unit 24 rotates the fan 28 at time S1, the control device 20 is cooled, and the substrate temperature Td that has risen to near the limit temperature Tx falls to the temperature T2, and the substrate temperature Td and the limit temperature Tx And the difference becomes larger. That is, in the refrigeration cycle apparatus 50, the fan control unit 24 operates the fan 28 while the compressor 1 is stopped to increase the difference between the substrate temperature Td and the limit temperature Tx. The restraint energization output current that can only rise to the first current W1 can be raised to the second current W2. Thereby, evaporation of the refrigerant | coolant collected inside the compressor 1 can be accelerated | stimulated, and the heating time of the compressor 1 before a driving | operation start can be shortened.

  The second current W2 is set in advance for short-time operation, and is set so that the substrate temperature Td does not exceed the limit temperature Tx when the fan 28 is operating. The second current W2 of the present embodiment is set to an upper limit value (limit output value) in a range where the substrate temperature Td does not exceed the limit temperature Tx when the fan 28 is operating. The substrate temperature Td once lowered to the temperature T2 rises again due to heat generated by the restraint energization with the second current W2, but the substrate temperature Td does not exceed the limit temperature Tx by the above setting.

Heating control unit 21, when the elapsed time from power-on has reached the energization time X ₂ that is determined in association with the current supplied to the compressor motor 19 (the output current of the restraint current), stops the constraint energization Is configured to do. Energizing time X _2, when incorporating the constraint current of the second current W2, the refrigerant elaborate reservoir inside the compressor 1 is the time required to evaporate. Energizing time X ₂ may also be set in advance, may be set dynamically according to the time-shortening command timing transmitted from the operation unit 30.

As shown in FIG. 3, since the second current W2 is set to be larger than the first current W1, the energization time X ₁ required when the compressor motor 19 is heated with the constant first current W1. and it can be reduced to energizing time X _2. That is, according to the refrigeration cycle apparatus 50, since the fan control unit 24 operates the fan 28 to lower the substrate temperature Td, the output current of the restraint energization can be increased to the second current W2, so that the compressor the time required for refrigerant elaborate reservoir within the 1 to evaporate, it is possible to shorten the energizing time X ₁ to energization time X _2.

FIG. 3 illustrates the case where the operation unit 30 transmits a time reduction command to the fan control unit 24 and the heating control unit 21 at a time S1 when a certain time has elapsed since the power was turned on. the time reduction operation for shortening at any time until the energizing time X ₁ has elapsed, which is performed by the user or the like, the time-shortening directive, which operating unit 30 is transmitted when receiving the operation It is. Therefore, a time reduction operation is performed at the same time as power is turned on, and the operation unit 30 may transmit a time reduction command to the fan control unit 24 and the heating control unit 21 when the power is turned on. Of course, in order to shorten the time required to evaporate the refrigerant accumulated in the compressor 1, a time-saving operation is performed at a timing closer to when the power is turned on, and at a timing closer to the time when the power is turned on from the operation unit 30. It is preferable that a time reduction command is transmitted.

Moreover, the control apparatus 20 has the time measuring part 26 which time-measures the elapsed time after the heating control part 21 started restraint electricity supply. The timer unit 26 has a function of transmitting a progress signal to the fan control unit 24 and the heating control unit 21 when the energization time determined in association with the current supplied to the compressor motor 19 has elapsed. Timing unit 26 is a timed energization time X ₁ when time reduction command from the operation unit 30 is not input, to count the energization time X ₂ when time reduction command from the operation unit 30 is inputted. The fan control unit 24 stops driving the fan motor 29 and stops the operation of the fan 28 when a progress signal is transmitted from the time measuring unit 26. The heating control unit 21 stops the energization when the elapsed signal is transmitted from the time measuring unit 26.

(Description of operation)
FIG. 4 is a flowchart showing the operation of the restricted energization operation by the refrigeration cycle apparatus 50. The control operation of the control device 20 will be described with reference to FIG. When the power is turned on (FIG. 4: step S101), the heating control unit 21 starts restraint energization with the first current W1 (FIG. 4: step S102). Next, when a time reduction command is transmitted from the operation unit 30 (FIG. 4: Step S103 / Yes), the fan control unit 24 drives the fan motor 29 to operate the fan 28. The heating control unit 21 heats the compressor motor 19 by increasing the output current of the restraint energization from the first current W1 to the second current W2 (FIG. 4: step S104).

Controller 20, until the energizing time _{X 2} has elapsed, the rotational speed of the fan 28 to maintain the output current of and restraint current (output value to the fan motor 29) at present (Figure 4: step S105 / No), the energization When the time X ₂ has elapsed (FIG. 4: step S105 / Yes), the fan control unit 24 stops the driving of the fan 28, the heating control unit 21 finishes the heating of the compressor motor 19 by stopping the constraint energization (FIG. 4: Step S107).

On the other hand, the control device 20, if the time reduction command from the operation unit 30 is not input (FIG. 4: step S103 / No), until the energizing time _{X 1} has elapsed, maintains the state of the constraint current of the first current W1 and (4: step S106 / No), the energization time _{X 1} has elapsed (FIG. 4: step S106 / Yes), terminates the constraint current (Figure 4: step S107).

  As described above, since the refrigeration cycle apparatus 50 is configured so that the fan control unit 24 operates the fan 28 when the power is turned on, the substrate temperature Td that rises when the output current of the restraint energization is increased. Since the temperature can be reduced and the rise in the substrate temperature Td can be suppressed, it is necessary to evaporate the refrigerant accumulated in the compressor 1 at the time of initial installation or when a certain period of time has passed since the power was turned off. Time can be shortened.

  By the way, the conventional refrigeration cycle apparatus does not have a configuration for lowering the substrate temperature Td at the time of restraint energization. Therefore, as shown in FIG. 2, in order to shorten the evaporation time of the liquid refrigerant accumulated in the compressor 1, when restraint energization is performed with an excess current Wo such that the substrate temperature Td exceeds the limit temperature Tx, Restraint energization is stopped at the time So when the substrate temperature Td reaches the limit temperature Tx. This is to prevent the substrate temperature Td from rising to a temperature To higher than the limit temperature Tx. That is, in the conventional refrigeration cycle apparatus, the output current of the restricted energization can be increased only to a certain value.

  In this regard, the refrigeration cycle apparatus 50 in the present embodiment is configured such that the fan control unit 24 operates the fan 28 and cools the control apparatus 20 when a time reduction command is transmitted from the operation unit 30. Therefore, since the difference between the substrate temperature Td and the limit temperature Tx can be increased, the output current of the restraint energization can be increased as compared with the conventional case. Therefore, the evaporation time of the refrigerant accumulated in the compressor 1 can be shortened, and the leaving time at the time of initial installation or when the power is turned on after the stop can be shortened, so that the operation efficiency is improved. Can do.

  In the present embodiment, in order to distinguish from a malfunction of the fan 28 when the power is turned on, the control device 20 performs a time-shortening operation when the operation unit 30 accepts a time-shortening operation. It is not limited to. For example, the heating control unit 21 may supply current to the compressor motor 19 when the power is turned on to perform energization, and the fan control unit 24 may operate the fan 28 when energizing. Even in this case, since the fan 28 can cool the substrate of the control device 20 and suppress an increase in the substrate temperature Td, the compressor can be used during initial installation or when a certain period of time has passed since the power was turned off. It is possible to shorten the time required to evaporate the refrigerant accumulated in the interior of 1.

<Modification>
FIG. 5 is a schematic diagram showing a refrigerant circulation path and a control configuration of a refrigeration cycle apparatus 150 according to a modification of the present embodiment. FIG. 6 is a flowchart showing the operation of the restricted energization operation by the refrigeration cycle apparatus 150. A refrigeration cycle apparatus 150 according to a modification of the present embodiment will be described with reference to FIGS. 3, 5, and 6. About the same structure as the refrigerating cycle apparatus 50 mentioned above, description is abbreviate | omitted using the same code | symbol.

  The control device 120 in the present modification includes a reference determination unit 27 that determines whether the substrate temperature Td detected by the substrate temperature sensor 22 is equal to or higher than the reference temperature T1. The reference determination unit 27 transmits a time reduction command to the fan control unit 24 and the heating control unit 21 when it is determined that the substrate temperature Td is equal to or higher than the reference temperature T1. FIG. 3 illustrates the case where the reference temperature T1 is set to the peak of the graph indicating the substrate temperature Td, but is not limited thereto, and the reference temperature T1 is arbitrarily set within a range not exceeding the limit temperature Tx. Is set. Therefore, by adjusting the reference temperature T1, for example, the reference determination unit 27 can be configured to transmit a time reduction command to the fan control unit 24 and the heating control unit 21 at the same time as the power is turned on.

  In the present modified example, when the time reduction command is transmitted from the operation unit 30 or the reference determination unit 27 while the compressor 1 is stopped, the fan control unit 24 operates the fan 28 and the heating control unit 21 performs the energization of restraint. The output current is increased. That is, the heating control unit 21 compresses the second current W2 larger than the first current W1 when the fan control unit 24 operates the fan 28 after starting energization with the first current W1. It is supplied to the machine motor 19 and energized with restraint.

Further, timer unit 126 in this modified example is the heating control unit 21 counts a time to elapse from the start of constraint energization (from power) is energizing time X _2. That is, the timing unit 126, when the energization time X ₂ has elapsed, has a function of transmitting the elapse signal to the fan control unit 24 and the heating control unit 21.

(Description of operation)
Next, the control operation of the control device 120 will be described with reference to FIG. When the power is turned on (FIG. 6: step S201), the heating control unit 21 starts restraint energization with the first current W1 (FIG. 6: step S202). Next, when a time reduction command is input from the operation unit 30 (FIG. 6: Step S203 / Yes), the fan control unit 24 drives the fan motor 29 to operate the fan 28. Further, the heating control unit 21 heats the compressor motor 19 by increasing the output current of the restraint energization from the first current W1 to the second current W2 (FIG. 6: Step S205).

  On the other hand, when the time reduction command is not input from the operation unit 30 (FIG. 6: Step S203 / No), the reference determination unit 27 determines whether the substrate temperature Td detected by the substrate temperature sensor 22 is equal to or higher than the reference temperature T1. (FIG. 6: Step S204). When the substrate temperature Td is equal to or higher than the reference temperature T1 (FIG. 6: Step S204 / Yes), the reference determination unit 27 transmits a time reduction command to the fan control unit 24 and the heating control unit 21 (FIG. 6: Step S205). . When the time reduction command is input from the reference determination unit 27, the fan control unit 24 drives the fan motor 29 to operate the fan 28. Further, the heating control unit 21 heats the compressor motor 19 by increasing the output current of the restraint energization from the first current W1 to the second current W2 (FIG. 6: Step S206). If the substrate temperature Td is lower than the reference temperature T1, the reference determination unit 27 continues the comparison between the substrate temperature Td and the reference temperature T1 (FIG. 6: Step S204 / No).

Controller 20, until the energizing time _{X 2} has elapsed, the rotational speed of the fan 28 to maintain the output current of and restraint current (output value to the fan motor 29) at present (FIG. 6: step S207 / No), the energization When the time X ₂ has elapsed (Fig. 6: step S207 / Yes), the fan control unit 24 stops the driving of the fan 28, the heating control unit 21 finishes the heating of the compressor motor 19 by stopping the constraint energization (FIG. 6: Step S208).

  As described above, the refrigeration cycle apparatus 150 according to the present modified example, even when the time reduction command is not transmitted from the operation unit 30, when the substrate temperature Td detected by the substrate temperature sensor 22 reaches the reference temperature T1, The fan control unit 24 operates the fan 28, and the heating control unit 21 is configured to increase the output current of restraint energization. For this reason, since the substrate temperature Td which rises with the increase in the output current of restraint energization can be reduced and the increase in the substrate temperature Td can be suppressed, a certain period of time has passed since the initial installation or the power was turned off. At this time, the time required to evaporate the refrigerant accumulated in the compressor 1 can be shortened.

  In this modification, the case where the refrigeration cycle apparatus 150 includes both the operation unit 30 and the reference determination unit 27 has been described as an example. However, the refrigeration cycle apparatus 150 may be configured without providing the operation unit 30. . In the case of such a configuration, a time reduction command is transmitted from only the reference determination unit 27 to the fan control unit 24 and the heating control unit 21. Regarding the operation, step S203 in FIG. 6 is omitted. Even in this case, since the fan 28 can be operated at a desired timing by adjusting the reference temperature T1, an increase in the substrate temperature Td of the control device 20 can be suppressed. When a certain period of time has passed since the power was turned off, the time required for evaporating the refrigerant accumulated in the compressor 1 can be shortened.

  Each embodiment mentioned above is a suitable example in a refrigerating cycle device, and the technical scope of the present invention is not limited to these modes. For example, in FIGS. 1 and 5, the case where the outdoor unit 42 has one fan 28 that blows air to the outdoor heat exchanger 5 is illustrated, but the outdoor unit 42 is not limited thereto, and the outdoor unit 42 is not limited to this. A plurality of outdoor fans for blowing air may be provided. In the case of such a configuration, as the fan 28 of the refrigeration cycle apparatus 50, a fan having the closest distance to the control device 20 among the plurality of outdoor fans may be used. However, two or more outdoor fans selected from the plurality of outdoor fans in order of increasing distance from the control device 20 may be used for cooling the control device 20 during energization. 1 and 5 exemplify the case where the fan 28 is an outdoor fan that blows air to the outdoor heat exchanger 5. However, the present invention is not limited thereto, and a cooling fan that cools the control device 20 is separately provided as the fan 28. You may make it provide.

  Further, the fan control unit 24 may be configured to have a function of controlling the number of rotations of the fan 28 (output value to the fan motor 29). Then, when the fan control unit 24 increases the rotation speed of the fan 28, the heating control unit 21 increases the current supplied to the compressor motor 19 according to the increase amount of the rotation speed of the fan 28, thereby restricting energization. You may comprise. For example, table information that associates the rotation speed of the fan 28 with the output current of the restricted energization may be stored in a storage unit (not shown) provided inside or outside the control device 20. Then, the heating control unit 21 may determine the output current of the restraint energization in light of the rotation speed of the fan 28 in accordance with the table information, and execute the restraint energization using the determined output current. In addition, a function that can derive the output current of the energization of restriction by substituting the rotation speed of the fan 28 is stored in the storage unit, and the heating control unit 21 uses the above function from the rotation speed of the fan 28 to perform the energization of restriction energization. The output current may be calculated, and restraint energization with the calculated output current may be executed. The table information and function may be created so that the substrate temperature Td does not exceed the limit temperature Tx.

  In addition, in the present embodiment, the configuration in which the compressor motor 19 is caused to function as a heating unit is not limited to this. For example, the refrigeration cycle apparatuses 50 and 150 are separated from the compressor motor 19. You may have heating parts, such as a heater which heats the inside of compressor 1 under a stop. 1 and 5 exemplify a configuration in which the refrigeration cycle apparatuses 50 and 150 include the two expansion valves 10A and 10B and the two indoor heat exchangers 12A and 12B. However, the refrigeration cycle is not limited thereto. Devices 50 and 150 may have any number of expansion valves and indoor heat exchangers, one or more.

DESCRIPTION OF SYMBOLS 1 Compressor, 2 Compressor temperature sensor, 3 Oil separator, 4 Four way switching valve, 5 Outdoor heat exchanger, 6 Outdoor air temperature sensor, 7 Outdoor liquid pipe temperature sensor, 8 Gas liquid separator, 9 1st stationary valve, 10A, 10B Expansion valve, 11A, 11B Indoor liquid pipe temperature sensor, 12A, 12B Indoor heat exchanger, 13A, 13B Indoor gas pipe temperature sensor, 14 Second stationary valve, 15 Compressor intake pipe, 16 Oil return circuit, 17 Capillary tube, 18 Check valve, 19 Compressor motor, 20, 120 Control device, 21 Heating control unit, 22 Substrate temperature sensor, 23 Stop determination unit, 24 Fan control unit, 26, 126 Timing unit, 27 Reference determination unit, 28 Fan, 29 Fan motor, 30 Operation unit, 41 Indoor unit, 42 Outdoor unit, 50, 150 Refrigeration cycle device, T1 reference temperature, Td substrate temperature, Tx limit temperature, W1 first current, W2 first 2 current, X ₁ , X ₂ energization time.

Claims (10)

A refrigerant circuit in which a compressor having a compressor motor, an outdoor heat exchanger, an expansion valve, and an indoor heat exchanger are connected via a refrigerant pipe;
A control device for controlling the operation of the refrigerant circuit;
A fan for blowing air to the control device,
The controller is
A heating control unit for supplying a current to the compressor motor and energizing the compressor motor when the power is turned on;
A fan control unit that operates the fan when the restraint is energized;
A refrigeration cycle apparatus having A refrigerant circuit in which a compressor having a compressor motor, an outdoor heat exchanger, an expansion valve, and an indoor heat exchanger are connected via a refrigerant pipe;
A control device for controlling the operation of the refrigerant circuit;
A fan for blowing air to the control device,
The controller is
A fan control unit for controlling the operation of the fan;
A heating control unit for supplying a first current to the compressor motor and energizing the compressor motor when the power is turned on,
The heating control unit generates a second current larger than the first current when the fan control unit operates the fan after starting energization with the first current. A refrigeration cycle device that supplies power to the unit and performs energization. When an operation for shortening the time required for the energization is received, the operation unit transmits a time reduction command to the fan control unit,
The refrigeration cycle apparatus according to claim 2, wherein the fan control unit operates the fan when a time reduction command is transmitted from the operation unit. A substrate temperature sensor for detecting a substrate temperature of the control device;
The refrigeration cycle apparatus according to claim 2, wherein the fan control unit operates the fan if the substrate temperature detected by the substrate temperature sensor is equal to or higher than a preset reference temperature. An operation unit that transmits a time reduction command to the fan control unit when an operation for shortening the time required for the energization is received;
A substrate temperature sensor for detecting a substrate temperature of the control device,
The control device includes a reference determination unit that transmits a time reduction command to the fan control unit when the substrate temperature detected by the substrate temperature sensor is equal to or higher than a preset reference temperature.
The refrigeration cycle apparatus according to claim 2, wherein the fan control unit operates the fan when a time reduction command is transmitted from the operation unit or the reference determination unit.   The refrigeration cycle apparatus according to any one of claims 1 to 5, wherein the fan is an outdoor fan that blows air to the outdoor heat exchanger. A plurality of outdoor fans for blowing air to the outdoor heat exchanger;
The refrigeration cycle apparatus according to any one of claims 1 to 5, wherein the fan is at least one of the plurality of outdoor fans. The fan control unit has a function of controlling the rotation speed of the fan,
The heating control unit performs energization restraint by increasing a current supplied to the compressor motor in accordance with an increase amount of the fan rotation number when the fan control unit increases the rotation number of the fan. Item 8. The refrigeration cycle apparatus according to any one of Items 1 to 7.   The said heating control part stops the said restraint energization, when the elapsed time from the time of the said power activation reaches the energization time determined in relation to the electric current supplied to the said compressor motor. The refrigeration cycle apparatus according to any one of the above. A substrate temperature sensor for detecting a substrate temperature of the control device;
The refrigeration cycle according to any one of claims 1 to 9, wherein the heating controller stops the energization when the substrate temperature detected by the substrate temperature sensor reaches a preset limit temperature. apparatus.

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