JP2021116953A - Heat pump hot water supply device and control method of heat pump hot water supply device - Google Patents

Abstract

To improve boiling-up efficiency while suppressing concern about noise of a user and the like in a boiling-up operation.SOLUTION: A heat pump hot water supply device 1 includes: a heat pump unit 2 having a heat pump circuit including an air heat exchanger exchanging heat between air and a refrigerant, and heating water by the refrigerant, and a blower 8 for blowing the air to the air heat exchanger; a noise determination portion 51 for determining whether a situation of generation of noise by weather phenomenon at a time when the boiling-up operation is performed, exists or not; and a blower control portion 54 for controlling a rotating speed of the blower 8 in the boiling-up operation to a first rotating speed when the situation free from the generation of noise is determined by the noise determination portion 51, and controlling the rotating speed of the blower 8 to a second rotating speed higher than the first rotating speed when the situation of the generation of noise is determined by the noise determination portion 51.SELECTED DRAWING: Figure 2

Description

The present disclosure relates to a heat pump hot water supply device and a control method for the heat pump hot water supply device.

Conventionally, a heat pump water heater that uses a heat pump cycle to boil water has been known. This type of heat pump hot water supply device has, for example, a heat pump unit that heats water using a heat pump cycle, and a hot water storage tank that stores heated water (hot water) inside. In the heat pump unit, the heat pump cycle is composed of a compressor, a water-refrigerant heat exchanger, an expansion valve and an air heat exchanger.

During the boiling operation in which hot water is generated by the heat pump unit, the air heat exchanger exchanges heat between the air blown by the fan (blower) and the refrigerant. At this time, the higher the rotation speed of the fan, the more the heat exchange between the air and the refrigerant is promoted. As a result, the work of the compressor can be reduced, so that the boiling efficiency, which is the efficiency when the heat pump unit heats water as a whole, can be improved.

On the other hand, when the rotation speed of the fan is increased, the operating noise of the fan becomes loud and becomes noise, which may cause complaints from the user and his / her neighbors. As a countermeasure against the noise caused by the operating noise of the fan, for example, in Patent Document 1, the ability is automatically narrowed down only during the time period when low noise is required such as at night and in the morning and evening, and the noise caused by the rotation of the fan is made noise. Water heaters that reduce the noise within the permissible range set by the standard are disclosed.

Jikkenhei No. 2-85954 (page 2-5)

The heat pump water heater basically uses the midnight electricity in the midnight time zone, which is the cheapest price setting, to perform boiling operation at night or in the early morning. Therefore, as a device, it is preferable to increase the rotation speed of the fan at night or in the early morning to improve the boiling efficiency. However, there is a problem that the user or the like demands low noise during this time period, and the loud operating noise generated by the fan leads to the complaint of the user or the like.

The present disclosure has been made to solve the above-mentioned problems, and is a heat pump water heater and a heat pump water heater that can improve the boiling efficiency while suppressing the concern of noise of the user during the boiling operation. To obtain the control method of.

The heat pump hot water supply device according to the present disclosure includes an air heat exchanger that exchanges heat between air and a refrigerant, and has a heat pump circuit that heats water with the refrigerant and a blower that blows air to the air heat exchanger. The noise determination unit determines whether or not noise is generated due to a meteorological phenomenon during the boiling operation in which water is heated by the heat pump unit to generate hot water, and the noise determination unit generates noise. When it is determined that the situation is not the case, the rotation speed of the blower during the boiling operation is controlled to the first rotation speed, and when the noise determination unit determines that the situation is such that noise is generated, the rotation speed of the blower is determined. Is provided with a blower control unit that controls the second rotation speed higher than the first rotation speed.

Further, the heat pump hot water supply device according to the present disclosure includes an air heat exchanger that exchanges heat between air and a refrigerant, and has a heat pump circuit that heats water with the refrigerant and a blower that blows air to the air heat exchanger. The heat pump unit, the weather information acquisition unit that acquires the weather information of the area where the heat pump unit is installed, and the weather information acquisition unit that correspond to the time required for the boiling operation to heat water by the heat pump unit to generate hot water. Based on the acquired weather information, when the weather condition determination unit that determines the weather condition in the area and the weather condition determination unit determine that the weather condition is not bad, the number of rotations of the blower during boiling operation. To the first rotation speed, and when the weather condition determination unit determines that the weather condition is bad, the blower control unit controls the rotation speed of the blower to the second rotation speed higher than the first rotation speed. And.

Further, the control method of the heat pump hot water supply device according to the present disclosure includes an air heat exchanger that exchanges heat between air and a refrigerant, a heat pump circuit that heats water with the refrigerant, and a blower that blows air to the air heat exchanger. It is a control method of a heat pump hot water supply device including a heat pump unit having When it is determined that noise is not generated in the first step and the first step, the rotation speed of the blower during the boiling operation is controlled to the first rotation speed, and noise is generated in the first step. This includes a second step of controlling the rotation speed of the blower to a second rotation speed higher than the first rotation speed when it is determined that the situation is such.

According to the present disclosure, since the rotation speed of the blower is increased when noise is generated due to a meteorological phenomenon, it is possible to improve the boiling efficiency while suppressing the concern about noise caused by the blower of the user or the like.

FIG. 5 is an overall configuration diagram of a heat pump hot water supply device showing the first embodiment. It is a block diagram which shows the function of the control part of the heat pump hot water supply apparatus which shows Embodiment 1. FIG. It is a figure which shows an example of the hardware composition of the processing circuit of the heat pump hot water supply apparatus which shows Embodiment 1. FIG. It is a flowchart of the control at the time of the boiling operation of the heat pump hot water supply device which shows Embodiment 1. It is a flowchart of the control at the time of the boiling operation of the heat pump hot water supply apparatus which shows embodiment 2. It is a flowchart of the control at the time of the boiling operation of the heat pump hot water supply device which shows embodiment 3. It is a flowchart of the weather information acquisition processing at the time of the boiling operation of the heat pump hot water supply device which shows Embodiment 4. It is a flowchart of the control at the time of the boiling operation of the heat pump hot water supply apparatus which shows embodiment 5.

Hereinafter, embodiments will be described with reference to the accompanying drawings. In each figure, the same or corresponding parts are designated by the same reference numerals.

Embodiment 1.
FIG. 1 is an overall configuration diagram of the heat pump hot water supply device 1 according to the first embodiment. The heat pump hot water supply device 1 includes a heat pump unit 2 having a heat pump circuit 3 that circulates a refrigerant to heat water, and a control unit 50 that controls each device of the heat pump hot water supply device 1. Further, in the present embodiment, the heat pump hot water supply device 1 is provided with a tank unit 10 having a hot water storage tank 11 for storing hot water inside.

The heat pump circuit 3 has a configuration in which the compressor 4, the water-refrigerant heat exchanger 5, the expansion valve 6, and the air heat exchanger 7 are cyclically connected in this order by a refrigerant pipe. The compressor 4 sucks in a low-temperature low-pressure refrigerant, compresses the refrigerant, puts it in a high-temperature and high-pressure state, and discharges the refrigerant. The compressor 4 has a function of circulating a refrigerant in the heat pump circuit 3. The compressor 4 is provided with, for example, an inverter device, and the pressure and temperature of the refrigerant discharged from the compressor 4 can be changed by arbitrarily changing the drive frequency.

The water refrigerant heat exchanger 5 exchanges heat between the refrigerant flowing on the primary side and the water flowing on the secondary side. A high-temperature refrigerant compressed by the compressor 4 is guided to the primary side of the water-refrigerant heat exchanger 5 via a refrigerant pipe. Low-temperature water is guided from the hot water storage tank 11 to the secondary side of the water-refrigerant heat exchanger 5. The low-temperature water guided to the secondary side of the water-refrigerant heat exchanger 5 is heated by the high-temperature refrigerant flowing on the primary side.

The expansion valve 6 adjusts the flow rate of the refrigerant and adjusts the pressure (decompression) of the inflowing refrigerant. As the expansion valve 6, for example, an electronic expansion valve capable of changing the opening degree based on an instruction from the control unit 50 is used. The air heat exchanger 7 exchanges heat between the outside air (air) and the refrigerant flowing through the heat pump circuit 3. The air heat exchanger 7 is, for example, a fin-and-tube heat exchanger made of copper, aluminum, or the like.

The heat pump unit 2 has a blower 8 that blows outside air to the air heat exchanger 7. The blower 8 is arranged around the air heat exchanger 7. The blower 8 is composed of, for example, an impeller such as a propeller fan and a motor for rotating the impeller. The amount of outside air blown to the air heat exchanger 7 depends on the rotation speed of the blower 8. The higher the rotation speed of the blower 8, the larger the amount of outside air blown to the air heat exchanger 7. This promotes heat exchange between the outside air and the refrigerant in the air heat exchanger 7. Here, the number of rotations of the blower 8 is the number of times the blower 8 rotates per unit time.

The tank unit 10 includes a hot water storage tank 11, an HP circulation pump 12, a tank circulation pump 13, a bath circulation pump 14, a hot water supply mixing valve 15, a bath mixing valve 16, an electromagnetic valve 17, and a bath heat. It has an exchanger 18.

The hot water boiled by the heat pump unit 2 and the water before boiling are stored in the hot water storage tank 11. The hot water storage tank 11 and the heat pump unit 2 are connected to each other via a heating circulation circuit 21. The lower part of the hot water storage tank 11 and the inflow port on the secondary side of the water refrigerant heat exchanger 5 of the heat pump unit 2 are connected to each other by the heat circulation circuit 21, and the upper part of the hot water storage tank 11 and the water refrigerant heat exchanger 5 are connected to each other. The outlets on the secondary side are connected to each other. In the heating circulation circuit 21, an HP circulation pump 12 is provided between the lower part of the hot water storage tank 11 and the inflow port on the secondary side of the water refrigerant heat exchanger 5. The HP circulation pump 12 sends the water in the hot water storage tank 11 from the lower part of the hot water storage tank 11 to the secondary side of the water refrigerant heat exchanger 5 and returns it to the upper part of the hot water storage tank 11.

In addition to the heating circulation circuit 21, a water supply pipe 23 branching from the water supply pipe 22 is connected to the lower part of the hot water storage tank 11. The upstream side of the water supply pipe 22 is connected to an external water source. The water source is, for example, water services. The water supply pipe 22 is provided with a water supply temperature sensor 30 that detects the temperature of the water flowing through the water supply pipe 22 on the upstream side of the branching point with the water supply pipe 23. Low-temperature water is supplied from the water source to the lower part of the hot water storage tank 11 via the water supply pipe 22 and the water supply pipe 23. Hot water flows into the hot water storage tank 11 through the heating circulation circuit 21, and low temperature water flows into the hot water storage tank 11 through the water supply pipe 23. In this way, hot water is stored in the hot water storage tank 11 so that a temperature difference occurs between the upper part and the lower part.

A plurality of temperature sensors 31 are attached to the surface of the hot water storage tank 11 at different heights. In the present embodiment, the five temperature sensors 31 are provided at different height positions. By detecting the temperature distribution of hot water in the hot water storage tank 11 in the vertical direction using a plurality of temperature sensors 31, the temperature and amount of hot water in the hot water storage tank 11 can be detected.

When the heat pump unit 2 heats the water in the hot water storage tank 11 to generate hot water, the compressor 4, the expansion valve 6, the blower 8 and the HP circulation pump 12 are driven, respectively, in the heat pump circuit 3. The high-temperature refrigerant discharged from the compressor 4 and the water guided from the lower part of the hot water storage tank 11 exchange heat with the water refrigerant heat exchanger 5. The water led from the lower part of the hot water storage tank 11 is heated and boiled by this heat exchange, and the boiled hot water is returned to the upper part of the hot water storage tank 11. Hot water is gradually stacked in the hot water storage tank 11 from the upper part, and when the required amount of hot water is reached, the HP circulation pump 12 and the like are stopped, and the boiling operation is completed.

The hot water supply mixing valve 15 has a first inflow port, a second inflow port, and an outflow port. The bath mixing valve 16 has a first inflow port, a second inflow port, and an outflow port. One end of the hot water supply pipe 24 is connected to the upper part of the hot water storage tank 11. The other end of the hot water supply pipe 24 is branched into two. One end of the two-branched hot water supply pipe 24 is connected to the first inlet of the hot water supply mixing valve 15, and the other end is connected to the first inlet of the bath mixing valve 16. .. Further, the water supply pipe 22 is branched into two on the downstream side of the branching point with the water supply pipe 23. One end of the water supply pipe 22 branched into two is connected to the second inlet of the hot water supply mixing valve 15, and the other end is connected to the second inlet of the bath mixing valve 16. ..

One end of the mixing hot water supply pipe 25 is connected to the outlet of the hot water supply mixing valve 15. The other end of the mixed hot water supply pipe 25 is connected to a hot water outlet terminal (not shown) such as a faucet used by the user. The mixed hot water supply pipe 25 is provided with a hot water supply flow rate sensor 32 and a hot water supply temperature sensor 33. The hot water supply flow rate sensor 32 detects the flow rate of hot water flowing through the mixed hot water supply pipe 25. The hot water supply temperature sensor 33 detects the temperature of the hot water flowing through the mixed hot water supply pipe 25. The hot water supply mixing valve 15 mixes the hot water supplied from the hot water storage tank 11 via the hot water supply pipe 24 and the low temperature water supplied from the water source via the water supply pipe 22 at an appropriate temperature to form the mixed hot water supply pipe 25. Hot water at an appropriate temperature is supplied to the hot water terminal through the hot water supply terminal.

One end of the bath hot water supply pipe 26 is connected to the outlet of the bath mixing valve 16. The other end of the bath hot water supply pipe 26 is connected to the bath side circulation circuit 27. The bath hot water supply pipe 26 is provided with a solenoid valve 17 and a bath flow rate sensor 34. The solenoid valve 17 is provided to control the supply of hot water from the tank unit 10 to the bathtub 40. The solenoid valve 17 opens and closes the flow path in the bath hot water supply pipe 26. The bath flow rate sensor 34 detects the flow rate of hot water flowing through the bath hot water supply pipe 26. Further, the bath side circulation circuit 27 is provided with a bath temperature sensor 35. The bath temperature sensor 35 detects the temperature of the hot water flowing through the bath hot water supply pipe 26 and the bath side circulation circuit 27. The bath mixing valve 16 mixes the hot water supplied from the hot water storage tank 11 via the hot water supply pipe 24 and the low temperature water supplied from the water source via the water supply pipe 22 at an appropriate temperature, and the bath hot water supply pipe 26 and Hot water at an appropriate temperature is supplied to the bathtub 40 via the bath-side circulation circuit 27. When the amount of hot water in the bathtub 40 reaches an appropriate amount, the hot water supply is stopped by the solenoid valve 17, so that the bathtub 40 can be filled with hot water.

The bath heat exchanger 18 uses the hot water flowing on the primary side of the bath heat exchanger 18 to flow the bath water of the bathtub 40 flowing on the secondary side of the bath heat exchanger 18 (hot water stored in the bathtub 40). ) Is a heat exchanger for heating. The primary side of the bath heat exchanger 18 is connected to the hot water storage tank 11 via the tank side circulation circuit 28. The upper part of the hot water storage tank 11 and the inflow port on the primary side of the bath heat exchanger 18 of the heat pump unit 2 are connected to each other by the tank side circulation circuit 28, and the lower part of the hot water storage tank 11 and the bath heat exchanger 18 are connected to each other. The outlets on the primary side are connected to each other. In the tank-side circulation circuit 28, a tank circulation pump 13 is provided between the lower part of the hot water storage tank 11 and the outlet on the primary side of the bath heat exchanger 18. The tank circulation pump 13 sends the hot water in the hot water storage tank 11 from the upper part of the hot water storage tank 11 to the primary side of the bath heat exchanger 18 and returns it to the lower part of the hot water storage tank 11.

The secondary side of the bath heat exchanger 18 is connected to the bathtub 40 via the bath side circulation circuit 27. In the bath side circulation circuit 27, a bath circulation pump 14 is provided between the inflow port on the secondary side of the bath heat exchanger 18 and the bathtub 40. In the bath side circulation circuit 27, the other end of the bath hot water supply pipe 26 is connected between the outlet on the secondary side of the bath heat exchanger 18 and the bathtub 40. The bath circulation pump 14 sends the bath water of the bathtub 40 to the secondary side of the bath heat exchanger 18 and returns it to the bathtub 40.

When performing the reheating operation to heat the bath water of the bathtub 40, the tank circulation pump 13 and the bath circulation pump 14 are driven respectively, and the hot water and the bath side circulation led from the hot water storage tank 11 in the tank side circulation circuit 28. In the circuit 27, the bath water guided from the bathtub 40 exchanges heat with the bath heat exchanger 18. The temperature of the hot water led from the hot water storage tank 11 is lowered by this heat exchange, and the hot water is returned to the lower part of the hot water storage tank 11. The bath water heated in the bath heat exchanger 18 returns to the bathtub 40. When the bath water in the bathtub 40 reaches an appropriate temperature, the tank circulation pump 13 and the bath circulation pump 14 are stopped, and the reheating operation is completed.

The control unit 50 is electrically connected to each device of the heat pump hot water supply device 1 and each sensor, and controls each device of the heat pump hot water supply device 1. That is, the control unit 50 includes a compressor 4, an expansion valve 6, a blower 8, an HP circulation pump 12, a tank circulation pump 13, a bath circulation pump 14, a hot water supply mixing valve 15, a bath mixing valve 16, an electromagnetic valve 17, and electricity. Is connected. Further, the control unit 50 is electrically connected to a water supply temperature sensor 30, a plurality of temperature sensors 31, a hot water supply flow rate sensor 32, a hot water supply temperature sensor 33, a bath flow rate sensor 34, and a bath temperature sensor 35. In the present embodiment, the control unit 50 is provided in the tank unit 10.

The operation terminal 42 is connected to the control unit 50 by wire or wirelessly. The control unit 50 and the operation terminal 42 can communicate with each other in both directions. The operation terminal 42 is an example of an input means capable of inputting various information by the user. The operation terminal 42 is installed in, for example, a kitchen or a bathroom. The operation terminal 42 has an operation unit operated by the user and a display unit for displaying information and the like regarding the heat pump hot water supply device 1. The user can input commands and set values related to the operation of the heat pump hot water supply device 1 to the operation terminal 42. The operation terminal 42 transmits the input information to the control unit 50. The control unit 50 can control the operation of the heat pump hot water supply device 1 according to the information received from the operation terminal 42.

Further, an external communication terminal 44 is connected to the control unit 50 by wire or wirelessly. The control unit 50 and the external communication terminal 44 can communicate in both directions. The external communication terminal 44 is, for example, a HEMS controller. The HEMS controller is a controller of a home energy management system that manages electric devices and the like in a house, and is connected to a control unit 50 via, for example, a communication network in the house. The external communication terminal 44 is connected to the Internet IN. The Internet IN is an example of a communication network. The external communication terminal 44 can obtain various weather information from an external server 46 that holds various weather information such as a weather forecast via the Internet IN.

FIG. 2 is a block diagram showing the functions of the control unit 50. As shown in FIG. 2, the control unit 50 includes a weather information acquisition unit 52, a weather condition determination unit 53, and a blower control unit 54. In the present embodiment, the weather information acquisition unit 52 and the weather state determination unit 53 are examples of the noise determination unit 51 that determines whether or not noise is generated due to a meteorological phenomenon.

The weather information acquisition unit 52 acquires weather information in the area where the heat pump unit 2 is installed. The meteorological information is information on atmospheric conditions such as weather, atmospheric pressure, wind direction, and wind speed, and for example, the information announced by the Japan Meteorological Agency can be used. In this embodiment, the meteorological information includes at least one of precipitation and wind speed. Here, precipitation is the amount of water that falls in a certain period of time. The weather information acquisition unit 52 can acquire weather information from the external server 46 via the Internet IN through the external communication terminal 44, for example. The meteorological information that can be acquired from the external server 46 includes the observed current meteorological information and, for example, the meteorological forecast information that predicts the meteorological state several hours ahead. In addition, the weather information acquisition unit 52 can acquire the input weather information when the user inputs the weather information using the operation terminal 42. Further, for example, when the external communication terminal 44 is a HEMS controller and the photovoltaic power generation system is connected to the HEMS controller, the HEMS controller which is the external communication terminal 44 is used for predicting the amount of power generated by solar power. May already have weather information. In this case, the weather information acquisition unit 52 can acquire the weather information from the HEMS controller which is the external communication terminal 44.

The weather condition determination unit 53 determines the weather condition in the area where the heat pump unit 2 is installed, based on the weather information acquired by the weather information acquisition unit 52. Specifically, the weather condition determination unit 53 determines whether or not the weather condition in the area is bad weather. Bad weather means, for example, strong wind and rain. When the wind and rain are strong, the rain or wind hits the ground, plants, buildings, etc., and a loud noise is generated, resulting in noise. In such a situation where noise is generated by a meteorological phenomenon, even if the rotation of the blower 8 becomes high and the operating noise of the blower 8 becomes loud, the user and his / her neighbors do not easily notice the operating noise of the blower 8. As a specific determination method, in the present embodiment, the meteorological condition determination unit is, for example, when the amount of precipitation included in the meteorological information is equal to or greater than a preset amount, and the wind speed included in the meteorological information is preset. If at least one of the above speeds is satisfied, it is determined that the weather condition is bad. Precipitation and wind speed, which are the criteria for determination, can be obtained experimentally, for example.

The blower control unit 54 controls the rotation speed of the blower 8 based on the determination of the weather condition determination unit 53. The blower control unit 54 can control the rotation speed of the blower 8 to at least two rotation speeds, a first rotation speed and a second rotation speed higher than the first rotation speed. The blower control unit 54 controls the rotation speed of the blower 8 to the first rotation speed during normal boiling operation, that is, during boiling operation when the weather condition is not bad weather and noise due to a meteorological phenomenon is not generated. do. Further, the blower control unit 54 controls the rotation speed of the blower 8 to the second rotation speed during the boiling operation when the weather condition is bad weather and noise is generated due to the weather phenomenon.

The control unit 50 is realized, for example, as a processing circuit having a hardware configuration shown in FIG. FIG. 3 is a diagram showing an example of the hardware configuration of the processing circuit. Each component constituting the control unit 50 is realized, for example, by the processor 71 shown in FIG. 3 executing a program stored in the memory 72. Further, a plurality of processors and a plurality of memories may cooperate to realize the above function. Further, a part of the functions of the control unit 50 may be implemented as an electronic circuit, and the other part may be realized by using the processor 71 and the memory 72.

Next, the operation of the heat pump hot water supply device 1 during the boiling operation will be described. FIG. 4 is a flowchart of control during the boiling operation of the heat pump hot water supply device 1. Usually, the boiling operation is carried out at midnight when the unit price of electricity is low. By this boiling operation, most of the amount of hot water used in one day is stored in the hot water storage tank 11 in advance. During the daytime, a boiling operation is performed to boil the remaining required amount of hot water. If there is a possibility of running out of hot water, an additional boiling operation is performed. Therefore, the boiling operation may be carried out at any time regardless of day or night.

As shown in FIG. 4, first, the control unit 50 determines whether or not the start condition of the boiling operation is satisfied (step ST1). As a determination of the establishment of the start condition of the boiling operation, for example, when the boiling operation in the midnight time zone is scheduled, it is determined whether or not the scheduled start time of the operation has been reached, and the start time is determined. When is reached, it is determined that the start condition is satisfied. Further, for example, when the possibility of running out of hot water occurs during the daytime, more specifically, it is determined that the start condition is satisfied when the amount of remaining hot water in the hot water storage tank 11 is less than the preset amount. .. When the start condition of the boiling operation is satisfied, the process proceeds to the next step ST2. If the condition for starting the boiling operation is not satisfied, this step ST1 is repeated.

Next, the meteorological information acquisition unit 52 acquires the meteorological information in the area where the heat pump unit 2 is installed, which corresponds to the time required for the boiling operation (step ST2). In the present embodiment, the weather information acquired in this step ST2 is the weather forecast information which is the weather forecast information. Therefore, the weather information acquisition unit 52 acquires the weather forecast information in the time zone during which the boiling operation is performed. The information acquired by the weather information acquisition unit 52 is stored in, for example, a memory (not shown).

Subsequently, the weather condition determination unit 53 determines the weather condition in the area where the heat pump unit 2 is installed, based on the weather information acquired in step ST2. More specifically, the weather condition determination unit 53 determines whether or not the weather condition is bad weather (step ST3). This determines whether or not the situation is such that noise is generated by a meteorological phenomenon. When it is determined that the weather condition is not bad weather, noise is not generated due to the weather phenomenon. Therefore, the blower control unit 54 sets the rotation speed controlled by the blower 8 to the first rotation speed (step). ST4). When it is determined that the weather condition is bad weather, noise is generated due to the meteorological phenomenon. Therefore, the blower control unit 54 sets the rotation speed controlled by the blower 8 to be higher than the first rotation speed. Set to the rotation speed (step ST5). Here, the second rotation speed is a rotation speed higher than the first rotation speed, but the user or the like recognizes the operating noise of the blower 8 at the second rotation speed as noise beyond the noise caused by the meteorological phenomenon. The rotation speed is set so that no complaints from users or the like will occur. The meteorological condition determination unit 53 indicates that the meteorological condition is bad, for example, when the amount of precipitation included in the meteorological information is equal to or higher than a preset amount, or when the wind speed included in the meteorological information is equal to or higher than a preset speed. Judge as heaven.

The blower control unit 54 controls the rotation speed of the blower 8 to the rotation speed set in step ST4 or step ST5, and the heat pump hot water supply device 1 performs a boiling operation (step ST6). The control unit 50 determines whether or not the end condition of the boiling operation is satisfied (step ST7), and if the end condition is satisfied, ends the boiling operation (step ST8). If the end condition is not satisfied, the boiling operation is continued. As a determination of satisfying the end condition of the boiling operation, for example, it is determined that the end condition is satisfied when the amount of remaining hot water in the hot water storage tank 11 reaches a preset required amount of hot water. Step ST8 completes the boiling operation process.

As described above, the heat pump hot water supply device 1 according to the present embodiment includes an air heat exchanger 7 that exchanges heat between air and a refrigerant, and has an air heat exchange with a heat pump circuit 3 that heats water with the refrigerant. Whether or not noise is generated due to a meteorological phenomenon during the time of the heat pump unit 2 having the blower 8 for blowing air to the vessel 7 and the boiling operation in which the heat pump unit 2 heats water to generate hot water. When the weather information acquisition unit 52 and the weather condition determination unit 53, which serve as the noise determination unit 51, and the noise determination unit 51 determine that no noise is generated, the rotation of the blower 8 during the boiling operation. A blower that controls the number to the first rotation speed and controls the rotation speed of the blower 8 to a second rotation speed higher than the first rotation speed when the noise determination unit 51 determines that noise is generated. It includes a control unit 54.

With such a configuration, when the noise due to the meteorological phenomenon is not generated, the rotation speed of the blower 8 during the boiling operation is controlled to the first rotation speed, and the noise due to the meteorological phenomenon is generated. , The rotation speed of the blower 8 during the boiling operation is controlled to the second rotation speed higher than the first rotation speed. In a situation where noise is generated by a meteorological phenomenon, the operating noise of the blower 8 is mixed with the noise caused by the meteorological phenomenon, so that the user or the like of the heat pump hot water supply device 1 is hard to notice the operating noise of the blower 8. Therefore, even if the rotation speed of the blower 8 is controlled to the second rotation speed higher than the normal first rotation speed in a situation where noise is generated due to a meteorological phenomenon, the operating noise of the blower 8 is noisy to the user or the like. It is difficult to be aware of it, and it is possible to suppress concerns about noise from users. Then, by controlling the rotation speed of the blower to the second rotation speed higher than the first rotation speed, the heat exchange between the air and the refrigerant in the air heat exchanger 7 can be promoted, so that the compressor is compressed accordingly. The work of the machine 4 can be reduced, and the boiling efficiency can be improved as a whole.

Further, the noise determination unit 51 uses the weather information acquisition unit 52 for acquiring the weather information of the area where the heat pump unit 2 is installed and the weather information acquired by the weather information acquisition unit 52 corresponding to the time required for the boiling operation. Based on this, it has a weather condition determination unit 53 that determines the weather condition of the area, and when the weather condition determination unit 53 determines that the weather condition is not bad weather, it is not a situation where noise is generated. When the weather condition determination unit 53 determines that the weather condition is bad weather, it is determined that noise is generated. With such a configuration, it is determined whether or not noise is generated due to a meteorological phenomenon based on the meteorological state determined based on the meteorological information of the area, so that a more accurate determination can be made.

The meteorological information includes at least one of precipitation and wind speed, and the meteorological condition determination unit 53 satisfies at least one of the case where the precipitation is equal to or higher than the preset amount and the case where the wind speed is equal to or higher than the preset speed. In some cases, it is determined that the weather condition is bad. With such a configuration, it is determined that the weather condition is bad weather, especially in a strong wind and rain situation where noise is likely to occur due to a meteorological phenomenon. Can be done.

The weather information acquisition unit 52 acquires the weather forecast information, which is the weather forecast information of the area where the heat pump unit 2 is installed, as the weather information, and the weather condition determination unit 53 is the time to perform the boiling operation. The weather condition is determined based on the weather forecast information corresponding to. With such a configuration, it is not necessary for the user to set the weather information every time the boiling operation is performed, and the weather information acquisition unit 52 can automatically acquire the weather information, so that the convenience of the user can be improved. can.

Further, the control method of the heat pump hot water supply device 1 according to the present embodiment includes an air heat exchanger 7 that exchanges heat between air and a refrigerant, a heat pump circuit 3 that heats water with the refrigerant, and an air heat exchanger 7. It is a control method of a heat pump hot water supply device 1 including a heat pump unit 2 having a blower 8 for blowing air into the air, and noise due to a meteorological phenomenon during a boiling operation in which water is heated by the heat pump unit 2 to generate hot water. In the first step of determining whether or not the situation is such that noise is generated, and when it is determined in the first step that the situation is not such that noise is generated, the rotation speed of the blower 8 during the boiling operation is set to the first rotation speed. This includes a second step of controlling the rotation speed of the blower 8 to a second rotation speed higher than the first rotation speed when it is determined that noise is generated in the first step. ..

As a result, in a situation where noise due to a meteorological phenomenon is generated, the operating noise of the blower 8 is mixed with the noise caused by the meteorological phenomenon, and it is difficult for the user or the like to notice the operating noise of the blower 8. Even if the second rotation speed is controlled to be higher than the rotation speed, the operating noise of the blower 8 is less likely to be recognized as noise by the user or the like, and the concern about noise by the user or the like can be suppressed. Then, by controlling the rotation speed of the blower to the second rotation speed higher than the first rotation speed, the heat exchange between the air and the refrigerant in the air heat exchanger 7 can be promoted, so that the compressor is compressed accordingly. The work of the machine 4 can be reduced, and the boiling efficiency can be improved as a whole.

In the present embodiment, the weather information acquisition unit 52 and the weather condition determination unit 53 are used as the noise determination unit 51 to determine whether or not noise is generated due to a meteorological phenomenon, but the present invention is not limited to this. .. For example, it is equipped with an imaging means such as a camera that captures the outdoor situation, and it depends on the meteorological phenomenon in consideration of the state of rainfall and the wind and rain conditions such as the shaking of trees based on the still image or the moving image captured by the imaging means. It may be determined whether or not the situation is such that noise is generated. Further, a sound measuring means such as a microphone for measuring outdoor sounds may be provided, and it may be determined whether or not noise is generated due to a meteorological phenomenon based on the measurement result by the sound measuring means.

Further, although the operation terminal 42 is used as an example of the input means, another example of the input means may be a mobile terminal such as a smartphone connected to the control unit 50 so as to be able to communicate in both directions.

Embodiment 2.
Next, the second embodiment will be described with reference to FIG. FIG. 5 is a flowchart of control during the boiling operation of the heat pump hot water supply device 1 according to the present embodiment. The description of the part of the present embodiment similar to that of the first embodiment will be omitted.

In the present embodiment, the blower control unit 54 controls the rotation speed of the blower 8 according to the degree of bad weather when the weather condition determination unit 53 determines that the weather condition is bad weather. The degree of bad weather can be set based on, for example, the amount of precipitation included in the meteorological information or the magnitude of the wind speed included in the meteorological information. Specifically, when the meteorological information acquired by the meteorological information acquisition unit 52 includes precipitation, it is assumed that the greater the precipitation, the greater the degree of bad weather. Further, when the weather information acquired by the weather information acquisition unit 52 includes the wind speed, it is assumed that the higher the wind speed, the greater the degree of bad weather. The degree of bad weather may be set based on both the amount of precipitation and the wind speed.

As shown in FIG. 5, in the control of the boiling operation, if it is determined in step ST3 that the weather condition is bad weather, the process proceeds to step ST11. In step ST11, the weather condition determination unit 53 determines whether or not the degree of bad weather in the weather condition exceeds the first magnitude. For example, when setting the degree of bad weather based on the amount of precipitation, it is assumed that the weather condition is bad when the amount of precipitation is equal to or higher than the preset first amount of precipitation, and the amount of precipitation is equal to or higher than the first amount of precipitation. When the amount of precipitation is less than the second amount of precipitation, which is more than one amount of precipitation, the degree of bad weather is the first magnitude, and when the amount of precipitation is greater than or equal to the second amount of precipitation, the degree of bad weather is the second degree. Suppose it is a size. When the precipitation amount indicated by the weather information acquired in step ST2 is equal to or more than the first precipitation amount and less than the second precipitation amount, the weather condition determination unit 53 does not exceed the first magnitude of bad weather. judge. Further, when the precipitation amount indicated by the weather information acquired in step ST2 is equal to or more than the second precipitation amount, the weather condition determination unit 53 has a second magnitude and a first magnitude of bad weather. Is determined to exceed.

When it is determined in step ST11 that the degree of bad weather does not exceed the first magnitude, the blower control unit 54 sets the rotation speed controlled by the blower 8 to the second rotation speed (step ST5). Further, when it is determined in step ST11 that the degree of bad weather exceeds the first magnitude, the blower control unit 54 sets the rotation speed controlled by the blower 8 to a third rotation speed higher than the second rotation speed. (Step ST12). Here, the third rotation speed is a rotation speed higher than the second rotation speed, but the user or the like recognizes the operating noise of the blower 8 at the third rotation speed as noise beyond the noise caused by the meteorological phenomenon. The rotation speed is set so that no complaints from users or the like will occur. Subsequently, the blower control unit 54 controls the rotation speed of the blower 8 to the rotation speed set in step ST4, step ST5 or step ST12, and the heat pump hot water supply device 1 performs a boiling operation (step ST6).

As described above, in the present embodiment, the blower control unit 54 controls the rotation speed of the blower 8 according to the degree of bad weather when the weather condition is determined to be bad weather, and the degree of bad weather. The number of revolutions of the blower 8 when the degree of bad weather is larger than the first magnitude is higher than the number of revolutions of the blower 8 when is the first magnitude. do. With such a configuration, the rotation speed of the blower 8 can be changed according to the degree of bad weather. Therefore, it is considered that the noise caused by the natural phenomenon does not become so loud when the degree of bad weather is small. Therefore, the rotation speed of the blower 8 is slightly increased, and when the degree of bad weather is large, the noise caused by the natural phenomenon is also large. Therefore, it is possible to take measures to significantly increase the rotation speed of the blower 8. Therefore, since the optimum rotation speed of the blower 8 can be increased according to the degree of bad weather, it is possible to more effectively improve the boiling efficiency while suppressing the concern of noise of the user or the like.

In addition, the degree of bad weather is set based on at least one of the amount of precipitation and the magnitude of the wind speed included in the meteorological information. It is considered that the stronger the wind and rain, the louder the noise is generated. Therefore, with such a configuration, it is possible to more accurately determine the degree of bad weather according to the loudness of the noise.

In the present embodiment, the rotation speed of the blower 8 is set to three stages depending on whether the weather condition is bad weather and whether the degree of bad weather exceeds the first magnitude. , Not limited to this. The rotation speed of the blower 8 may be set to three or more stages by increasing the determination of the degree of bad weather. In addition, although the degree of bad weather was set stepwise, the degree of bad weather was set continuously so that the rotation speed of the blower 8 was also set continuously according to the degree of bad weather. May be good.

Embodiment 3.
Next, the third embodiment will be described with reference to FIG. FIG. 6 is a flowchart of control during the boiling operation of the heat pump hot water supply device 1 according to the present embodiment. It should be noted that the description of the part of the present embodiment similar to that of the above-described embodiment will be omitted.

In the present embodiment, the weather information acquisition unit 52 acquires the weather information not only at the start of the boiling operation but also during the boiling operation. As shown in FIG. 6, when the end condition of the boiling operation is not satisfied in step ST7, the process proceeds to step ST21. In step ST21, the weather information acquisition unit 52 acquires the latest weather information in the area where the heat pump unit 2 is installed. The latest weather information includes the latest current weather information observed during the boiling operation and the latest weather forecast information announced during the boiling operation. Is done. The weather information acquisition unit 52 can acquire these latest weather information in real time, for example, via the Internet IN.

Subsequently, the process returns to step ST3, and based on the latest acquired weather information, the weather condition determination unit 53 determines whether or not the weather condition is bad weather, and proceeds to the subsequent flow.

In the present embodiment, when the boiling operation is performed, the weather information acquisition unit 52 receives at least one of the latest weather information and the latest weather forecast information observed during the time when the boiling operation is performed. The latest weather information including the latest weather information is acquired, the weather condition determination unit 53 determines the weather condition based on the latest weather information, and the blower control unit 54 determines the weather condition based on the latest weather information in bad weather. If not, the rotation speed of the blower 8 is controlled to the first rotation speed, and if the weather condition determined based on the latest weather information is bad weather, the rotation speed of the blower 8 is controlled to the second rotation speed. .. With such a configuration, it is possible to acquire the latest weather information during the boiling operation and determine whether or not the weather condition is bad based on the latest weather information. .. Therefore, even if the weather condition changes during the boiling operation, the weather condition can be determined according to the change in the weather condition and the rotation speed of the blower 8 can be controlled. Therefore, during the boiling operation, it is possible to more accurately improve the boiling efficiency while suppressing the concern about noise of the user and the like.

Needless to say, with respect to the control flow in the second embodiment, the latest weather information may be acquired during the boiling operation and the latest weather condition may be determined as in the present embodiment. good. In this case, in the second embodiment, the degree of bad weather is determined with respect to a certain standard, and the rotation speed of the blower 8 is set, but the relative weather condition based on the acquired weather information is set. The rotation speed of the blower 8 may be set based on the change. That is, when the rotation speed of the blower 8 is controlled according to the meteorological condition based on the meteorological information (first meteorological information) acquired at a certain time, the latest meteorological information (second meteorological information) acquired thereafter is used. The number of subsequent rotations of the blower 8 may be set based on the comparison between the based weather condition and the weather condition based on the first weather information. As an example, when the weather condition determined based on the latest weather information is worse than the weather condition determined based on the immediately preceding weather information, that is, when the degree of bad weather is greater, the blower 8 Set the rotation speed to the same as or higher than the rotation speed that has been set up to that point. Further, when the weather condition determined based on the latest weather information is better than the weather condition determined based on the immediately preceding weather information, that is, when the degree of bad weather is small, the rotation speed of the blower 8 Is set to a rotation speed lower than the rotation speed set up to that point. With such a configuration, the rotation speed of the blower 8 may be controlled more accurately.

Further, in the present embodiment, the weather information acquisition unit 52 acquires the latest weather information via the Internet IN, but the weather information acquisition unit 52 acquires the latest weather information via the Internet IN, for example, due to a communication failure or the like. When the weather information cannot be acquired, the blower control unit 54 may be forcibly prohibited from controlling the rotation speed of the blower 8 to a rotation speed higher than the first rotation speed. If communication is interrupted and the latest weather conditions cannot be obtained, it will not be possible to accurately grasp changes in the weather conditions after that. Therefore, by setting the rotation speed of the blower 8 to the normal first rotation speed, the user You may give priority to concerns about noise such as.

Embodiment 4.
Next, the fourth embodiment will be described with reference to FIG. 7. FIG. 7 is a flowchart of the weather information acquisition process during the boiling operation of the heat pump hot water supply device 1 according to the present embodiment. It should be noted that the description of the part of the present embodiment similar to that of the above-described embodiment will be omitted.

In the present embodiment, when the user inputs the weather information by the operation terminal 42, the weather condition is determined based on the input weather information. The overall control flow is the same as in FIG.

FIG. 7 shows a flow of processing for acquiring weather information used for determining the weather condition in step ST2 in the present embodiment. First, the weather information acquisition unit 52 determines whether or not the weather information has been input from the operation terminal 42 by the user (step ST31). When the weather information is input on the operation terminal 42, the input weather information is acquired (step ST32). Further, when the weather information is not input to the operation terminal 42, the weather information of the area where the heat pump unit 2 is installed corresponding to the time for the boiling operation is acquired via the Internet IN (step ST33). ). Subsequently, the process proceeds to step ST3, and the weather condition determination unit 53 determines the weather condition based on the weather information acquired in step ST32 or step ST33.

As described above, in the present embodiment, when the weather information is input by the operation terminal 42 capable of inputting the weather information by the user, the weather condition determination unit 53 determines the weather based on the input weather information. Determine the state. With such a configuration, when the weather information is input by the user on the operation terminal 42, the input weather information is prioritized and the weather condition is determined based on the input information. Usually, the meteorological information acquired via the Internet is the meteorological information covering a considerably wide area as compared with the residential area of the user. For this reason, it is considered that the weather information obtained from the surroundings of the user's house is often more accurate than the weather information obtained via the Internet. Therefore, the accuracy of the determination can be further improved by determining the weather condition based on the weather information input by the user on the operation terminal 42.

In the present embodiment, when there is weather information input by the operation terminal 42, the weather condition is determined based on the input weather information. For example, the weather acquired via the Internet. When the information and the weather information input by the operation terminal 42 are different, the weather condition may be determined based on the information on the better weather side among the weather information. The information on the better weather side is, for example, meteorological information including less precipitation when the meteorological information includes precipitation. When the wind speed is included in the weather information, the weather information includes a smaller wind speed. By giving priority to the information on the good weather side in this way, even if the weather condition is bad in the judgment based on one of the weather information, the rotation of the blower 8 is usually performed when the weather condition is not actually bad. It is possible to further reduce the possibility that the operating noise of the blower 8 becomes conspicuous.

Embodiment 5.
Next, the fifth embodiment will be described with reference to FIG. FIG. 8 is a flowchart of control during the boiling operation of the heat pump hot water supply device 1 according to the present embodiment. It should be noted that the description of the part of the present embodiment similar to that of the above-described embodiment will be omitted.

In the present embodiment, the heat pump hot water supply device 1 includes a high-speed prohibition means for prohibiting the user from controlling the rotation speed of the blower 8 to a rotation speed higher than the first rotation speed by the blower control unit 54. For example, the operation terminal 42 in which the user can input a command or the like related to the operation of the heat pump hot water supply device 1 functions as a means for prohibiting high speed. As shown in FIG. 8, when the start condition of the boiling operation is satisfied in step ST1, the control unit 50 increases the rotation speed of the blower 8 from the operation terminal 42, that is, the rotation speed of the blower 8 is set to the first rotation speed. It is determined whether or not there is a speed-up prohibition instruction prohibiting control to a higher rotation speed (step ST41). The speed-up prohibition instruction can be input by the user by the operation terminal 42. If there is no instruction to prohibit speeding up, the process proceeds to step ST2, weather information is acquired, and the weather condition is determined in step ST3. If there is an instruction to prohibit speeding up, the process proceeds to step ST4, and the blower control unit 54 sets the rotation speed controlled by the blower 8 to the first rotation speed.

With this configuration, when the user is concerned about the operating noise of the blower 8 when the speed is increased, the rotation speed of the blower 8 can be forcibly controlled to the normal first rotation speed. As a result, it is possible to avoid an increase in noise due to an increase in the rotation speed of the blower 8, and it is possible to suppress concerns about noise from the user and the like.

In addition, it is included in the scope of the technical idea shown in the embodiment that each embodiment is appropriately combined, modified or omitted.

1 heat pump hot water supply device, 2 heat pump unit, 3 heat pump circuit, 4 compressor, 5 water refrigerant heat exchanger, 6 expansion valve, 7 air heat exchanger, 8 blower, 10 tank unit, 11 hot water storage tank, 12 HP circulation pump, 13 Tank circulation pump, 14 Bath circulation pump, 15 Hot water supply mixing valve, 16 Bath mixing valve, 17 Electromagnetic valve, 18 Bath heat exchanger, 21 Heating circulation circuit, 22, 23 Water supply pipe, 24 Hot water supply pipe, 25 Mixing Hot water supply pipe, 26 Bath hot water supply pipe, 27 Bath side circulation circuit, 28 Tank side circulation circuit, 30 Water supply temperature sensor, 31 Temperature sensor, 32 Hot water supply flow sensor, 33 Hot water supply temperature sensor, 34 Bath flow sensor, 35 Bath Temperature sensor, 40 water heater, 42 operation terminal, 44 external communication terminal, 46 external server, 50 control unit, 51 noise determination unit, 52 weather information acquisition unit, 53 weather condition determination unit, 54 blower control unit, 71 processor, 72 memory , IN Internet.

Claims (14)

A heat pump unit including an air heat exchanger that exchanges heat between air and a refrigerant, a heat pump circuit that heats water with the refrigerant, and a blower that blows the air to the air heat exchanger.
A noise determination unit that determines whether or not noise due to a meteorological phenomenon is generated during the boiling operation in which the water is heated by the heat pump unit to generate hot water.
When the noise determination unit determines that the noise is not generated, the rotation speed of the blower during the boiling operation is controlled to the first rotation speed, and the noise determination unit generates the noise. A blower control unit that controls the rotation speed of the blower to a second rotation speed higher than the first rotation speed when it is determined that the situation is met.
Heat pump water heater equipped with. The noise determination unit
A weather information acquisition unit that acquires weather information in the area where the heat pump unit is installed, which corresponds to the time required for the boiling operation.
It has a meteorological condition determination unit that determines the meteorological condition of the area based on the meteorological information acquired by the meteorological information acquisition unit.
When the weather condition determination unit determines that the weather condition is not bad weather, it is determined that the noise is not generated, and the weather condition determination unit determines that the weather condition is bad weather. The heat pump hot water supply device according to claim 1, wherein it is determined that the noise is generated in such a case. A heat pump unit including an air heat exchanger that exchanges heat between air and a refrigerant, a heat pump circuit that heats water with the refrigerant, and a blower that blows the air to the air heat exchanger.
A weather information acquisition unit that acquires weather information in the area where the heat pump unit is installed, which corresponds to the time required for the boiling operation to heat the water to generate hot water by the heat pump unit.
A meteorological condition determination unit that determines the meteorological condition of the area based on the meteorological information acquired by the meteorological information acquisition unit.
When the weather condition determination unit determines that the weather condition is not bad weather, the rotation speed of the blower during the boiling operation is controlled to the first rotation speed, and the weather condition determination unit controls the rotation speed of the blower to the first rotation speed. A blower control unit that controls the rotation speed of the blower to a second rotation speed higher than the first rotation speed when it is determined that the weather is bad.
Heat pump water heater equipped with. When it is determined that the weather condition is bad weather, the blower control unit controls the rotation speed of the blower according to the degree of bad weather.
The rotation speed of the blower when the degree of bad weather is a second magnitude larger than the rotation speed of the blower when the degree of bad weather is the first magnitude. The heat pump hot water supply device according to claim 2 or 3, wherein the number is higher. The meteorological information includes at least one of precipitation and wind speed.
The meteorological condition determination unit determines that the meteorological condition is bad weather when at least one of the case where the amount of precipitation is equal to or higher than a preset amount and the case where the wind speed is equal to or higher than a preset speed is satisfied. The heat pump hot water supply device according to any one of claims 2 to 4. The meteorological information includes at least one of precipitation and wind speed.
The meteorological condition determination unit determines that the meteorological condition is bad weather when at least one of the case where the amount of precipitation is equal to or higher than a preset amount and the case where the wind speed is equal to or higher than a preset speed is satisfied. Judge,
The heat pump hot water supply device according to claim 4, wherein the degree of bad weather is set based on at least one of the amount of precipitation and the magnitude of the wind speed included in the weather information. The weather information acquisition unit acquires the weather forecast information, which is the weather forecast information of the area, as the weather information via the communication network.
The heat pump hot water supply device according to any one of claims 2 to 6, wherein the weather condition determination unit determines the weather condition based on the weather forecast information corresponding to the time for performing the boiling operation. When the boiling operation is performed,
The meteorological information acquisition unit acquires the latest meteorological information including at least one of the latest meteorological information and the latest meteorological forecast information observed at the time when the boiling operation is performed.
The meteorological condition determination unit determines the meteorological condition based on the latest meteorological information, and determines the meteorological condition.
The blower control unit controls the rotation speed of the blower to the first rotation speed when the weather condition determined based on the latest weather information is not bad weather, and determines based on the latest weather information. The heat pump hot water supply device according to claim 7, wherein the rotation speed of the blower is controlled to the second rotation speed when the weather condition is bad weather. The boiling operation is performed in a state where the blower control unit controls the rotation speed of the blower according to the determination of the weather condition determination unit based on the first weather information which is the weather information acquired by the weather information acquisition unit. If so,
The meteorological information acquisition unit acquires a second meteorological information including at least one of the latest meteorological information and the latest meteorological forecast information observed at the time when the boiling operation is performed.
The meteorological condition determination unit determines the meteorological condition based on the second meteorological information, and determines the meteorological condition.
When the weather condition determined by the weather condition determination unit based on the second weather information is worse than the weather condition determined based on the first weather information, the blower control unit is said to be Maintain or increase the number of revolutions of the blower,
When the weather condition determined by the weather condition determination unit based on the second weather information is better than the weather condition determined based on the first weather information, the blower control unit is said to be The heat pump hot water supply device according to claim 7, which reduces the number of revolutions of the blower. When the weather information is input by an input means capable of inputting the weather information by the user, the weather condition determination unit determines the weather condition based on the input weather information according to claim 7. The heat pump hot water supply device described. When the weather information is input by an input means capable of inputting the weather information by the user, and the weather information input by the input means is different from the weather forecast information, the weather condition determination unit may perform the above. The heat pump hot water supply device according to claim 7, wherein the weather condition is determined based on the weather information input by the input means and the weather forecast information on the better weather side. When the weather information acquisition unit cannot acquire the weather forecast information via the communication network, the blower control unit is prohibited from controlling the rotation speed of the blower to a rotation speed higher than the first rotation speed. The heat pump hot water supply device according to any one of claims 7 to 11. The invention according to any one of claims 1 to 12, further comprising a high-speed prohibition means for prohibiting the blower control unit from controlling the rotation speed of the blower to a rotation speed higher than the first rotation speed. Heat pump water heater. A heat pump hot water supply device including an air heat exchanger that exchanges heat between air and a refrigerant, and a heat pump unit having a heat pump circuit that heats water by the refrigerant and a blower that blows the air to the air heat exchanger. It ’s a control method,
The first step of determining whether or not noise due to a meteorological phenomenon is generated during the boiling operation in which the water is heated by the heat pump unit to generate hot water, and
When it is determined in the first step that the noise is not generated, the rotation speed of the blower during the boiling operation is controlled to the first rotation speed, and the noise is generated in the first step. When it is determined that the situation is met, the second step of controlling the rotation speed of the blower to a second rotation speed higher than the first rotation speed, and
How to control a heat pump water heater, including.

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