JPH0735936B2 - Heat pump system - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a heat pump system that has a function of drying indoor and outdoor air conditioners and a function of drying clothes, for example, and enables multipurpose and efficient use.

(Prior Art) As a device to which a heat pump system for refrigerant is applied,
An indoor cooling and heating air conditioner, and a multi-room simultaneous air conditioner in which a plurality of indoor heat exchangers are connected to one outdoor heat exchanger have been put into practical use, and are disclosed in, for example, JP-A-61-86357. As shown in the figure, connect the hot water supply heat exchanger for heating the hot water in the hot water storage tank and the bath heat exchanger for heating the hot water in the bathtub to the outdoor heat exchanger in parallel with the indoor heat exchanger. In addition to the air conditioning function, it has been put to practical use as a device having a hot water supply heating function and a bath heating function. Furthermore, for example, by separately disposing a heat exchanger on the ceiling of the bathroom or the changing room, blowing hot air from the ceiling outlet, and hanging the clothes so as to hit the blowing air, Even when the bathroom is not in use, clothes can be dried after washing and the indoors can be effectively used. With such a drying function, a drying unit is configured with a configuration substantially similar to an indoor unit in which an indoor heat exchanger and a circulation fan are housed in a casing, and the drying unit is provided on a bathroom ceiling or the like provided with a blowout port. This can be realized by providing a ventilation fan in the bathroom for appropriately discharging the air containing a large amount of the evaporated water from the leaked clothes to the outside. Therefore, in the above-mentioned multi-room air conditioner, that is, in the heat pump system having a plurality of refrigerant pipe connection ports in the outdoor unit in order to connect a plurality of indoor units, one of the refrigerant pipe connection ports has heat in the drying unit. By connecting the exchanger and controlling the operation of the exchanger in the same manner as the indoor unit, the heat pump system having the drying function can be easily configured without changing the outdoor unit side.

(Problems to be Solved by the Invention) In the heat pump system having the air conditioning function and the drying function as described above, the drying operation cannot be performed simultaneously with the indoor cooling operation. That is, in the dry operation, it is necessary to circulate the refrigerant that causes the outdoor heat exchanger to act as an evaporator, while in the cooling operation, the refrigerant circulation that causes the outdoor heat exchanger to act as the condenser causes so-called mode batting. Is. Therefore, conventionally, when the cooling operation request signal and the drying operation request signal are generated at the same time, the cooling operation is prioritized and the drying operation is interrupted or put into a standby state during this period. Therefore, especially in the summer when the frequency of use of the cooling operation is high, it takes a long time to finish the drying, which makes the device difficult for the user to use.
This causes a problem that sufficient comfort of use cannot be obtained.

The present invention has been made in view of the above, and an object thereof is to shorten the drying time in the case where the above mode batting occurs, and as a result,
It is to provide a heat pump system that can improve the user's use comfort.

(Means for Solving Problems) Therefore, as shown in FIG. 1, the heat pump system according to the first aspect of the present invention includes an outdoor unit 1 including a compressor and an outdoor heat exchanger, and an indoor heat source. The indoor units 2, 3 and 4 provided with an exchanger and arranged indoors, and the drying unit 9 provided with a heat exchanger for drying and arranged in a drying chamber 10 are provided. The indoor heat exchanger and the drying heat exchanger are connected in parallel, and the refrigerant discharged from the compressor is condensed in the outdoor heat exchanger and evaporated in the indoor heat exchanger to perform the cooling operation, while the compression is performed. The refrigerant discharged from the machine is provided with switching means for switching the refrigerant circulation path to perform a drying operation by condensing the refrigerant in the drying heat exchanger and evaporating it in the outdoor heat exchanger, and the ventilation fan 26 is provided in the drying chamber 10. The indoor cooling operation described above is set as the cooling operation request signal. On the other hand, while performing the drying operation according to the drying operation request signal, a heat pump that controls to perform the cooling operation with priority during mode batting in which the cooling operation request signal and the drying operation request signal are simultaneously generated. Operation control means
The heat pump system including 11 further includes a drying operation control means 13 that controls the ventilation fan 26 to ventilate the air in the drying chamber 10 during the mode batting.

A heat pump system according to a second aspect is the heat pump system according to the first aspect, wherein a drying timer that measures the elapsed time of the drying operation and outputs a drying operation end signal when the measurement time reaches a set time Further, the temperature detection means 27 and the humidity detection means 28 for respectively detecting the temperature and humidity of the air flowing into the drying chamber 10 are provided, and the mode batting is generated during the drying operation to interrupt the drying operation. When the detected temperature of the inflowing air is higher than the reference temperature and the detected humidity is lower than the reference humidity, the time measurement speed of the drying timer is delayed, while in other cases, the time measurement operation of the drying timer is performed. The timekeeping operation control means 31 to be interrupted is the drying operation control means.
13 have.

(Operation) In the heat pump system according to the first aspect of the present invention, during mode batting, the ventilation fan 26 is operated to ventilate the air in the drying chamber 10. The air flowing into the drying chamber 10 by this ventilation operation is likely to be in an air state in which the temperature is high and the humidity is low in the summer when the mode batting with the cooling operation occurs, and such inflowing air is high. Has a relatively large drying capacity without heating it, that is, it can contain a large amount of evaporated water. Therefore, even when the heating of the air by the heat pump cycle is stopped, it is possible to continue the drying of the clothes and the like by continuing the above ventilation operation. As a result, the drying time can be shortened, and the user's use comfort can be improved.

Further, in the heat pump system according to the second aspect, normally, the time until the end of drying when the drying operation is continued without mode batting is preset in the drying timer, and the drying operation period is set at this set time. However, in this case, during the mode batting in which the drying operation is interrupted, the time measurement speed of the drying timer is automatically corrected according to the magnitude of the drying effect by the ventilation operation. That is, the air flowing into the drying chamber 10 has a reference temperature (for example,
If the temperature is higher than 25 ℃ and lower than the standard humidity (for example, 60%), the drying effect will be smaller than that during the drying operation, and the time measurement speed will be adjusted according to the ratio of those drying effects. The measurement operation is continued at the delayed speed.
Further, in the case other than the above-mentioned inflowing air state, it is considered that the drying effect is hardly obtained and the time measuring operation is interrupted. As a result, even when the mode batting occurs and the drying operation is interrupted, it is possible to finish the drying in a time period substantially regulated by the time set in the drying timer and to finish the drying operation. Economical efficiency is improved because continuous continuous driving is suppressed, which also improves user comfort.

(Example) Next, a specific example of the heat pump system of the present invention will be described in detail with reference to the drawings.

FIG. 2 shows a schematic diagram of the overall configuration of the apparatus in one embodiment of the present invention configured as a multi-functional heat pump system having a hot water supply heating function and a bathtub hot water reheating function in addition to an air conditioning function and a drying function. . In the figure, reference numeral 1 is an outdoor unit, and a compressor, an outdoor heat exchanger, etc. are housed in the outdoor unit 1. And the outdoor unit 1
Are connected to three indoor units 2, 3, and 4, and a reheating unit 8 having a bath heating heat exchanger 7 for heating hot water in a hot water storage tank 5 and a bathtub 6, respectively. Furthermore, a drying unit 9 having a drying heat exchanger connected in series to the bath heating heat exchanger 7 is arranged on the ceiling of the bathroom. The drying unit 9 may be provided on the ceiling of a dressing room adjacent to the bathroom. Hereinafter, the room in which the drying unit 9 is arranged will be described as a drying room 10. The drying chamber 10 is also used for drying leaked clothes after washing, so that a hanging pole (not shown) for hanging clothes can be used.
Etc. are provided appropriately. In other words, the living space can be used more effectively by using the bathroom or undressing room that is normally unused except when taking a bath as a clothes drying room.

The above-mentioned compressor is operated by the inverter frequency control with the compression capacity corresponding to the total load of each utilization side heat exchanger. A heat pump operation control device (heat pump operation control means) 11 that circulates a refrigerant to each usage-side device that has an operation request while monitoring the entire multifunction heat pump system is provided inside the outdoor unit 1. In the following, only the indoor air conditioning operation and the drying operation will be described. First, in the indoor air conditioning operation, the operation start switch provided on each indoor unit 2, 3, 4, or the remote controller connected to these indoor users is operated by the user. Assuming that the detected room temperature has not reached the set room temperature, the deviation signal and the cooling operation request signal or the heating operation request signal corresponding to the switching position of the heating / cooling changeover switch are It is performed by transmitting from each indoor unit 2, 3, 4 to the heat pump operation control device 11. That is, the compressor is driven with a compression capacity according to the magnitude of the deviation signal, and during cooling operation, refrigerant circulation is performed in which the outdoor heat exchanger acts as a condenser and the indoor heat exchanger acts as an evaporator, while heating operation is performed. Occasionally, refrigerant circulation is performed in which the outdoor heat exchanger acts as an evaporator and the indoor heat exchanger acts as a condenser. When the detected room temperature reaches the set temperature due to continued air conditioning operation,
That is, when the thermostat is turned off, the transmission of the cooling or heating operation request signal is stopped, whereby the air conditioning operation is stopped.

On the other hand, the drying operation is performed by a drying operation control device (drying operation) provided in the drying unit 9 when the operation start switch of the remote controller 12 for drying operation operation connected to the drying unit 9 is turned on by the user. Control means) 13
Is started by transmitting a drying operation request signal from the above to the heat pump operation control device 11, and its details will be described later.

As described above, the drying heat exchanger is connected in series to the bath heating heat exchanger 7 on the assumption that the clothes are not dried in the drying chamber 10 and not bathed at the same time. .
That is, when there is no hot water in the bathtub 6 and hot water does not circulate in the reheating unit 8, heat exchange does not occur in the bath heating heat exchanger 7, and the refrigerant passes through the heat exchanger and is supplied to the drying heat exchanger. On the other hand, when the circulation fan attached to the drying heat exchanger is stopped and the refrigerant is circulated in the drying heat exchanger, the drying heat exchanger acts as a mere refrigerant pipe, Only one of the heating heat exchanger 7 and the drying heat exchanger can be selectively operated.

FIG. 3 is a perspective view showing the structure of the drying unit 9. On the lower surface of the drying unit 9, a suction port 21 is formed on the right side and a blowout port 22 is formed on the left side in the drawing, and between the suction port 21 and the blowout port 22, the above-mentioned drying heat exchanger is formed. 23 are erected. Furthermore, this drying heat exchanger
A circulation fan 24 composed of a sirocco fan is arranged adjacent to 23, and the heat exchanger 23 for drying and the circulation fan are provided.
24 is surrounded entirely by a casing 25. By operating the circulation fan 24, the air in the drying chamber 10 passes through the blow-in port 21 and the drying heat exchanger 23, and then is blown out from the blow-out port 22 to dry the drying chamber 10 and the drying unit 9.
It is designed to circulate and. Also the above casing
A ventilation fan 26 is further provided on the side wall surface of 25,
By operating this ventilation fan 26, the drying chamber
A part of the air inside 10 is discharged to the outside through an exhaust duct (not shown) from the opening formed in the side wall surface of the casing 25, so that the inside of the drying chamber 10 is ventilated.

A temperature sensor (temperature detection means) 27 for further detecting the air temperature in the drying chamber 10 and a humidity sensor (humidity detection for detecting relative humidity in the air are provided on the inner wall surface of the casing 25 communicating with the suction port 21. Means) 28.

The drying operation with the above-mentioned device is basically a circulation fan.
While operating 24, by circulating the refrigerant discharged from the compressor of the outdoor unit 1 from the drying heat exchanger 23 to the outdoor heat exchanger, the drying heat exchanger 23 acts as a condenser, This is done by raising the air temperature in the drying chamber 10 to the set temperature by the heat of condensation. At this time, the ventilation fan 26 is also operated at the same time, so that a part of the heated air is discharged from the drying chamber 10 to the outside and the same amount of air as the discharged amount is newly introduced into the drying chamber 10. Be seen. By heating the air flowing into the drying chamber 10 to the set temperature in this way, the allowable moisture content in the air is increased, and the heated air containing a large amount of water vaporized from the clothes is sequentially exposed to the outside. By discharging it, it is dried.

By the way, in the above embodiment, while performing the above-described drying operation more economically, the set temperature is automatically set according to the detection values of the temperature sensor 27 and the humidity sensor 28 so that the drying time can be made substantially constant. The drying operation control device 13 is provided with a control function for deciding on the target. Next, such control will be described with reference to the control flowcharts of FIGS.

When the dry operation switch of the remote controller 12 for dry operation is turned on by the user, first, the operation of the ventilation fan 26 is started (step S1) and the time counting operation of the dry timer is started (step S2). In this drying timer, a required drying time for a standard amount of clothes or the like to be dried is preset. When the amount of dry clothes is significantly different, the user can appropriately change the initial setting value. The next step S3 is the preset time t1.
This is a step of waiting for a lapse of time (for example, 10 minutes), and during this period, the ventilation in the drying chamber 10 proceeds by operating only the ventilation fan 26. The purpose of this ventilation operation will be described later. After the lapse of t1 time, as shown in step S4,
Room temperature T0 in the drying chamber 10 detected by the temperature sensor 27,
The humidity W0 detected by the humidity sensor 28 is read. Next, in steps S5 and S6, in order to make the drying time substantially constant, the target heating temperature when raising the temperature inside the drying chamber 10 by causing the drying heat exchanger 23 to act as a condenser, that is, the set temperature Ts is set. Is a step of automatically determining based on the above T0 and W0. Although a moist air diagram is schematically shown in FIG. 4, the air flowing into the drying chamber 10 has a temperature of Ta ° C. and a relative humidity of 40% as indicated by point A in FIG. When the air is heated to the temperature Tm ° C., the drying speed of the clothes and the like suspended in the drying chamber 10 is the absolute moisture content at the point M of relative humidity 100% at the temperature Tm ° C. and the point A. It is approximately proportional to the magnitude of the difference ΔQ. That is, when the inflowing air temperature state changes, the heating time is changed so that the ΔQ becomes substantially constant, so that the drying time becomes substantially the same. For example, as shown in the point B, the relative humidity of the inflowing air is almost the same as that of the point A, but when the temperature is high, the heating temperature is higher than the temperature Tm ° C.
Approximately the same ΔQ can be obtained at Tn ° C. Further, even if the temperatures are the same, as indicated by point C, it is necessary to set the heating temperature to a temperature Tp ° C. higher than the above Tm ° C. even in the inflowing air state with high relative humidity.

By changing the heating target set temperature in accordance with changes in the temperature and humidity of the inflowing air as described above, it is possible to make the drying time substantially constant. Therefore, the temperature sensors 27 that detect the humidity together with the temperature, respectively. The humidity sensor 28 and the humidity sensor 28 are provided at the suction port 21 of the drying unit 9. However, immediately after the drying operation switch is turned on, the humidity sensor 28
Then, there is a possibility that humidity different from that of the air flowing into the drying chamber 10 may be detected during the drying operation. That is, at the time of turning on the drying operation switch, the leaked clothes are
The air that has been brought into the room and that has increased the relative humidity due to this has accumulated. Therefore, in step S3, the ventilation operation is performed for 01 hour, and as a result of the continuation of this ventilation operation, the air accumulated in the drying chamber 10 is discharged to the outside, and the air is accumulated in the drying chamber 10 during the drying operation described later. It is supposed to replace with the same air condition as the inflowing air. Then, the room temperature T0 and the humidity W0 detected in this new air state are read in step S4.

In order to determine the set temperature Ts based on the above T0 and W0, first, in step S5 of FIG. 5, the humidity of T0 is corrected. In other words, the corrected temperature T01 is T01 = T0 + Ai However, when W0 ≧ 80% Ai = 2 ° C. 60% ≦ W0 <80% Ai = 1 ° C. 50% ≦ W0 <60% Ai = 0 W0 <50% At that time, Ai = -1 ° C is obtained, and the change according to the humidity level is performed by first correcting the detected temperature. Next, in step S6, the set temperature Ts is determined from the corrected temperature T01 based on the following calculation formula. That is, when T01 ≧ Th Ts = Tsh T01 <Td Ts = Tsd Td ≦ T01 <Th Ts = T01 × Ai + Tm where Th = 20 ° C., Tsh = 42 ° C., Td = 8 ° C., Tsd = 30 ℃, Ai = 1, Tm = 22 ℃.

As described above, the set temperature Ts based on the detected temperature T0 and the detected humidity W0
After determining, the process proceeds to step S7 in FIG.

In step S7, the operation of the circulation fan 24 is started, and a drying operation request signal is transmitted to the heat pump operation controller 11 of the outdoor unit 1. Next, the above-described drying operation is performed by the repeated processing from steps S8 to S12. First, step S8 is a step of determining the presence or absence of a mode battery, which will be described later. Here, the case without mode batting will be described first. At this time, step S9
Then, the room temperature Ti of the drying chamber 10 detected by the temperature sensor 27 is read, the difference between the set temperature Ts and the detected room temperature Ti is obtained as a deviation ΔT (step S10), and this deviation signal ΔT is used for the heat pump operation. It is transmitted to the control device 11 (step S11), and this is repeated until the remaining measurement time of the drying timer becomes 0 (step S12). During this repetitive processing, the heat pump operation control device 11 that receives the drying operation request signal and the ΔT signal causes the heat of condensation of the drying heat exchanger 23 to act as a condenser to cause the drying chamber 10 to dry as described above. Raise the internal air temperature to the set temperature Ts,
Alternatively, the drying operation of maintaining this Ts is continued.

When the drying operation is continued in this way and the remaining time measured by the drying timer reaches 0, the above steps S12 to S13 are performed.
And the drying operation stop signal is transmitted to the heat pump operation control device 11 and the circulation fan 24 is stopped to stop the drying operation, and then the ventilation fan 26 is stopped (step S14) to control the drying operation. To finish.

As described above, in the above, the heating target set temperature Ts is automatically changed so that the drying speed is substantially constant according to the state of the air flowing into the drying chamber 10. As a result, it is possible to make the drying time substantially constant, and it is not necessary for the user to change the initial value of the drying timer, for example, with each change of season, thus improving operability. Will be possible. Further, for example, when the inflow air temperature is low, the set temperature Ts is also set low, and as a result, the heating operation that excessively raises the temperature inside the drying chamber 10 is suppressed, so that the operating cost can be reduced. It will be possible.

Further, in the above, when detecting the inflowing air state as described above, after the ventilation operation in the drying chamber 10 is first performed at the start of the drying operation, the detection value is read, so that especially the humidity Upon detection, it is possible to more accurately grasp the inflowing air state and prevent malfunction.

By the way, in the above-mentioned drying operation that requires the outdoor heat exchanger to act as an evaporator, during the indoor cooling operation in which the outdoor heat exchanger acts as a condenser, so-called mode batting occurs, so simultaneous operation is required. Can not be. At this time, the indoor cooling operation is prioritized, and the operation standby signal is output from the heat pump operation control device 11 to the drying operation control device 13. The presence / absence of this operation standby signal is determined in step S8.
Therefore, when mode butting occurs, the process shifts from step S8 to steps S20 to S26 forming the timekeeping operation control means 31.

The step S20 compares the detected room temperature T0 immediately after the ventilation operation for the time t1 performed at the start of the drying operation with a preset reference temperature T1 (for example, 25 ° C.), and the step S2
1 is a step of comparing the detected humidity W0 with a reference humidity W1 (for example, 60%), T0 is higher than T1, and W0 is W1
When the temperature is lower than that, that is, when the inflow air into the drying chamber 10 is at high temperature and low humidity, the process proceeds to step S22, and the process of making the time counting operation speed of the drying timer slower than normal time, for example, 0.5 times is performed. On the other hand, when T0 and W0 are other than the above,
The process proceeds to step S23, and the time counting of the drying timer is interrupted. Then, while repeating the processing of steps S24 and S25,
The above-mentioned mode butting is canceled, that is, the indoor cooling operation is stopped, or the operation standby signal is released from the heat pump operation control device 11 when the operation is interrupted by turning off the thermostat.

When the operation standby signal is released, step S24
From S25 to S25 to return the drying timer timing operation performed in step S22 or S23 to the normal time, and then to step S9, the drying operation is restarted or started at this time. If the remaining time of the drying timer becomes 0 while waiting for the mode batting to be released after the delaying of the clocking operation speed in step S22, the process proceeds from step S6 to step S13, and The drying operation end process is performed.

While waiting for the mode batting release, the refrigerant is not circulated to the drying heat exchanger 23, and therefore the drying chamber 10
Although the internal air is not heated, the operation of the ventilation fan 26, that is, the ventilation operation is continued, and therefore, when the air flowing into the drying chamber 10 in this ventilation operation has a drying capacity, this Thereby, the drying of clothes and the like progresses. In particular, in an air condition of high temperature and low humidity within the above-mentioned reference temperature and humidity range obtained in summer, the drying effect is naturally smaller than that during air heating, but relatively quick drying can be performed. Therefore, by continuing the ventilation operation during mode batting, it is possible to shorten the drying time as compared with the conventional method, and as described above, the drying timer measurement operation is considered in consideration of the drying effect at high temperature and low humidity. By making corrections and continuing the measurement operation, it becomes possible to end the drying in a time period substantially matched with the operating time regulated by the time preset in the drying timer.
As a result, for example, even when the mode batting is canceled and the drying operation is restarted, the drying timer is timed up, that is, the operation is stopped by making it almost coincide with the end of drying the clothes, and the operation is continued unnecessarily. Since this can be suppressed, the economy can be improved and the user's comfort of use can be improved.

The above embodiment is not intended to limit the present invention, and various modifications can be made within the scope of the present invention. For example, in the above embodiment, the ventilation fan 26 is provided integrally with the drying unit 9. , A ventilation fan is separately attached to the side wall surface of the drying chamber, and the humidity sensor is not provided inside the drying unit 9 so that the ventilation operation for t1 hours at the start of the operation can be omitted. It is also possible to adopt a configuration in which it is arranged at a location.

(Effect of the invention) As described above, in the heat pump system according to the first aspect of the present invention, the ventilation operation is continued during mode batting, so that the clothes and the like are dried even during the ventilation operation particularly in the summer. Since it can be performed relatively quickly, the drying time is shortened as compared with the conventional case, and the user's comfort of use is improved.

Further, since the indoor unit and the drying unit have a circuit configuration for connecting to the outdoor unit, the connection mode of the drying unit is substantially the same as that of the indoor unit, and the complexity of the circuit configuration can be suppressed.

Further, in the heat pump system according to the second aspect, when the drying operation period is regulated by a preset time, the drying effect is generated when the mode batting occurs, the drying operation is interrupted, and only the ventilation operation is performed. Therefore, the time measurement speed of the drying time timer is automatically corrected, so that it is possible to finish the drying in approximately the operating period regulated by the above set time. Continuous operation is suppressed,
This can also improve the user's use comfort.

[Brief description of drawings]

FIG. 1 is a functional block diagram of a heat pump system of the present invention, FIG. 2 is a schematic diagram showing an overall configuration of a heat pump system configured by applying the present invention, and FIG. 3 is a perspective view of a drying unit in the heat pump system, Fourth
The figure is a wet space diagram for explaining the factors that influence the drying time, and FIGS. 5 and 6 are control flowcharts of the drying operation in the heat pump system. 1 ... outdoor unit, 2,3,4 ... indoor unit, 9 ... drying unit, 10 ... drying room, 11 ... heat pump operation control device (heat pump operation control means), 13 ... drying operation control device ( Drying operation control means), 26 ... ventilation fan, 27 ... temperature sensor (temperature detection means), 28 ... humidity sensor (humidity detection means), 31 ... timekeeping operation control means.

Front Page Continuation (72) Inventor Shinji Ehira 2 at 1000 Otani, Okamoto-cho, Kusatsu-shi, Shiga Daikin Industry Co., Ltd. Shiga Works (72) Inventor Koyo Uchida 2 Daikin at 1000 Otani, Okamoto-cho, Shiga Prefecture Industrial Co., Ltd. Shiga Works (56) References

Claims (2)

[Claims] 1. An outdoor unit (1) provided with a compressor and an outdoor heat exchanger, indoor units (2) (3) (4) provided with an indoor heat exchanger and arranged indoors, and for drying. A drying unit (9) equipped with a heat exchanger and arranged in the drying chamber (10)
And the indoor heat exchanger and the drying heat exchanger are connected in parallel to the outdoor heat exchanger, and the refrigerant discharged from the compressor is condensed by the outdoor heat exchanger to heat the indoor heat exchanger. Switching means for switching the refrigerant circulation path so that the refrigerant discharged from the compressor is condensed in the drying heat exchanger and evaporated in the outdoor heat exchanger while the cooling operation is performed by evaporating in the Along with providing a ventilation fan (26) in the drying chamber (10), while performing the indoor cooling operation according to the cooling operation request signal, while performing the drying operation according to the drying operation request signal, A heat pump system comprising a heat pump operation control means (11) for performing priority control of the indoor cooling operation during mode batting in which the cooling operation request signal and the dry operation request signal are simultaneously generated, Heat pump system, characterized in that by operating the ventilation fan (26) when the mode batting is provided drying operation control means (13) for controlling so as to ventilate air in the drying chamber (10) in the. 2. A drying timer is provided which measures the elapsed time of the drying operation and outputs a drying operation end signal when the measured time reaches a set time, and the temperature and humidity of the air flowing into the drying chamber (10). The temperature detection means (27) and the humidity detection means (28) for respectively detecting the temperature of the inflowing air are detected when the drying operation is interrupted by the mode batting during the drying operation. When the temperature is higher than the reference temperature and the detected humidity is lower than the reference humidity, the time measuring speed of the drying timer is delayed, while in other cases, the time measuring operation control means (31) for interrupting the time measuring operation of the drying timer is provided. The heat pump system according to claim 1, which is provided in the drying operation control means (13).