JP2738005B2 - Bathroom drying equipment - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a bathroom drier embedded in a ceiling of a bathroom and used for drying laundry.

<Prior Art> Conventionally, as this type of bathroom dryer, there is one as shown in FIG. 6 (Japanese Patent Laid-Open No. 59-150228). The bathroom drying device 21 is embedded in a ceiling 41 of a bathroom 40 and includes a condenser 23, an evaporator 24, and fans 25 and 26 for ventilating the condenser 23 and the evaporator 24, respectively. I have. On the condenser 23, an electric heater 30, a condensation temperature sensor 27 for detecting the temperature of the condenser 23, and an overheat preventer 32 are attached, while a room temperature sensor 28 is provided on a suction port 36 provided on the condenser 23 side. Attached. Further, a compressor (not shown) is provided, and this compressor, the condenser 23 and the evaporator 24 constitute a heat pump cycle. During operation, the fans 25 and 26 are always driven by the fan motor 35, and the air in the bathroom 40 is sucked into the device from the suction ports 36 and 37, respectively. Then, the heat of the sucked air is removed by the evaporator 24 and exhausted to the outside of the room (cool air C) through the fan 25 and the exhaust duct 42.
And heat is blown into the bathroom 40 through the fan 26 and the outlet 38 (warm air W) (heat pump cycle). With the warm air W, the laundry 45 suspended in the bathroom 40 is dried.

If the room temperature is low (below 27 ° C), such as in winter, the above inlet 36
This is detected by the room temperature sensor 28 attached to the condenser 23, and as shown in FIG. 4 (a), the electric heater 30 attached to the condenser 23 is operated in addition to the operation of the heat pump. And, the drying time of the laundry 45 is prevented from becoming long. That is, where only the operation of the heat pump is performed, the drying time is indicated by a dashed line A in FIG. On the other hand, when the room temperature is high (35 ° C. or more) such as in summer, when the overload operation is performed and the condenser 23 is overheated,
According to 32, the compressor is stopped to stop the heat pump cycle, and only the blowing operation is performed.

<Problems to be Solved by the Invention> Meanwhile, the conventional bathroom drying device 21 is provided with the condenser
Since 23 has a certain heat capacity, once it is overheated, it takes a considerable time to recover. Since the air blowing operation continues until recovery, there is a problem that the drying time of the laundry 45 becomes longer when the room temperature is high (35 ° C. or higher) as shown by the broken line B in FIG.

Accordingly, an object of the present invention is to provide a bathroom drying apparatus that can dry laundry in a short time not only when the room temperature is low but also when the room temperature is high.

<Means for Solving the Problems> In order to achieve the above object, the present invention provides a heat pump cycle including a compressor, a condenser, and an evaporator, and an electric heater. In a bathroom drying apparatus provided with a preventer, wherein the heat pump cycle is stopped when the condenser is overheated, a sensor for detecting a temperature of the condenser, and a temperature of the condenser is an operating temperature of the overheat protector. Control means for receiving the output from the sensor and stopping the heat pump cycle and operating the electric heater when the temperature is between the lower constant temperature and the operating temperature of the overheat protector. And

<Operation> When the temperature of the condenser is between a certain temperature lower than the operating temperature of the overheat protector and the operating temperature of the overheat protector, when the heat pump cycle is stopped and the electric heater is operated, The temperature of the warm air W rises compared to the case where the blowing operation is simply performed. On the other hand, the condenser is not overheated by stopping the heat pump cycle and adjusting the power consumption of the electric heater. Therefore, this bathroom dryer operates while maintaining the condenser at a temperature slightly lower than the operating temperature of the overheat protector and increasing the temperature of the hot air W. Therefore, even when the room temperature is high, the laundry is dried in a short time.

<Embodiment> Hereinafter, a bathroom drying apparatus of the present invention will be described in detail with reference to the illustrated embodiment.

As shown in FIG. 1, the bathroom drying apparatus 1 comprises a compressor 2, a condenser 3, and an evaporator 4 to constitute a heat pump cycle, and ventilates the condenser 3 and the evaporator 4, respectively. Fan 5 and fan 6 are provided. The condenser 3 is equipped with an electric heater 10, a condensation temperature sensor 7 for detecting the temperature of the condenser 3 and an overheat preventer 12, and a room temperature sensor 8 at a suction port 16 provided below the condenser 23.
Is installed. A suction port 17 is provided below the evaporator 4, an exhaust port 22 is provided beside the fan 5, and an air outlet (not shown) is provided below the fan 6. The bathroom drying device 1 controls the operation of the device.
An electrical component 9 including a CPU (Central Processing Unit) and its peripheral circuits is provided. This CPU, as shown in FIG.
The compressor 2, the electric heater 10, the fan 5, and the fan 6 are controlled as shown in FIG. 3 on the basis of the information from the outputs of the room temperature sensor 8, the condensation temperature sensor 7, and the overheat preventer 12. . In FIG. 2, the peripheral circuits are omitted for simplicity.

The bathroom dryer 1 operates as shown in FIGS. 3 and 4 (b). First, when the room temperature is 27 to 35 ° C., the room temperature sensor 8 detects that the temperature is 27 ° C. or higher, and the condensing temperature sensor 7 detects that the temperature is 65 ° C. or lower, and the loop M in FIG. Perform heat pump and ventilation operations as shown. That is, the fan 5 is controlled by the fan motor 11.
And 6, the bathroom air is sucked into the apparatus 1 through the suction port 16 on the condenser 3 side and the suction port 17 on the evaporator 4 side. Then, the heat of the sucked air is blown off by the evaporator 4 to make it cool air, and the air is exhausted to the outside through the fan 5 and the exhaust port 22.
Heat is given to the sucked air to generate warm air, which is blown into the bathroom through the fan 6 and an outlet below the fan 6. This warm air dries the laundry in the bathroom.
During operation, the fans 5 and 6 are always driven to perform ventilation and air blowing.

When the room temperature is low (27 ° C. or less), such as in winter, the room temperature sensor 7 detects this and causes the electric heater 10 attached to the condenser 3 to operate in addition to the above operation as shown in a loop L. And, the drying time of the laundry is not long.

On the other hand, when the room temperature is high (35 ° C. or more) such as in summer, the condenser sensor 7 detects 65 ° C. or more, and when the overheat protector 12 is not turned on, as shown in a loop H, the compressor 2
To stop the heat pump cycle,
The electric heater 10 is operated. Then, while suppressing the temperature rise of the condenser 3 by the heat pump, the power consumption of the electric heater 10 is adjusted to such an extent that the condenser 3 is not overheated. By controlling in this way, the condenser 3 can be prevented from overheating.
The temperature of the blown air can be increased while maintaining the temperature slightly lower than the temperature at which the 12 is turned on. Therefore, as shown by the solid line C in FIG.
In the above case, the laundry can be dried in a short time. In addition, when the room temperature becomes higher (40 ° C. or more) and the overheat protector is turned on, in order to prevent danger, as shown in a loop O in FIG. I have.

<Effects of the Invention> As is clear from the above, the present invention includes a compressor, a condenser, and an evaporator, constitutes a heat pump cycle, includes an electric heater, and includes an overheat protector in the condenser. In a bathroom drying apparatus in which the heat pump cycle is stopped when the condenser is overheated, a sensor for detecting the temperature of the condenser, and a constant temperature at which the temperature of the condenser is lower than the operating temperature of the overheat preventer. And when the temperature is between the operating temperature of the overheat prevention device and the control unit for receiving the output from the sensor and stopping the heat pump cycle and operating the electric heater, the room temperature is low. Not only in the case but also when the room temperature is high, the laundry can be dried in a short time.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of the bathroom dryer of the present invention, FIG. 2 is a block diagram showing an electric system of the bathroom dryer, FIG. 3 is a flowchart showing the operation of the bathroom dryer, FIG. Figures (a) and (b) show the operation modes of the conventional and inventive bathroom drying apparatuses with respect to room temperature, Figure 5 shows the drying time of the laundry with respect to room temperature, and Figure 6 shows the conventional bathroom drying apparatus. It is a schematic sectional drawing which shows a bathroom. 1 ... bathroom drying device, 2 ... compressor, 3 ... condenser, 4
…… evaporator, 5,6 …… fan, 7 …… condensation temperature sensor,
8 ... room temperature sensor, 9 ... electric components, 10 ... electric heater,
11 ... fan motor, 12 ... overheat protector, 16, 17 ... suction port, 22 ... exhaust port.

 ──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-60-222092 (JP, A) JP-A-55-139328 (JP, U)

Claims (1)

(57) [Claims] 1. A heat pump cycle comprising a compressor (2), a condenser (3) and an evaporator (4), an electric heater (10), and overheating of the condenser (3). A bathroom (1) provided with a vessel (12) for stopping the heat pump cycle when the condenser (3) is overheated; a sensor for detecting a temperature of the condenser (3); When the temperature of the heater (3) is between a constant temperature lower than the operating temperature of the overheat protector (12) and the operating temperature of the overheat protector (12), the output from the sensor (8) is received. And a control means for stopping the heat pump cycle and activating the electric heater (10).