JPS6377498A - Bathroom ventilating drier - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a ceiling-embedded bathroom ventilation dryer.

2. Description of the Related Art Conventionally, this type of ceiling-embedded bathroom ventilation dryer has been installed embedded in the ceiling of the bathroom, as shown in FIGS. The air in the bathroom is sucked in through the suction port 3 and air filter 4 provided on the lower surface of the body 2, heat is exchanged with the heat exchanger 6, and hot air is blown out from the air outlet 6, which is then used to wash clothes suspended in the bathroom. It is designed to dry object 7. Moreover, since the absolute humidity of the air in the bathroom increases due to the moisture removed from the washing product 7, an opening 9 is provided between the ventilation blower 8 and the heat exchanger 5.
The ventilation blower 8 is provided on the outside of the frame 2 facing the opening 9, and a part of the air in the bathroom is discharged outdoors through the duct 10, thereby suppressing the increase in absolute humidity and drying the clothes. It was designed so that it could be maintained.

Problems to be Solved by the Invention With such a conventional configuration, it is not possible to adjust the amount of heat required for drying clothes, the heat load in the bathroom, and the appropriate amount of ventilation for various installation conditions, so the drying time is However, there were problems such as an increase in running costs and an increase in running costs.

The present invention solves the above-mentioned conventional problems, and aims to provide a bathroom ventilation dryer with a short drying time.

Means for Solving the Problem In order to solve this problem, the present invention includes a frame incorporating a circulation blower, a heat exchanger, and a ventilation blower, and has an inlet and an inlet on the lower surface of the frame. The air outlet is formed on the same surface as the suction port, and is located near the suction port.

Function: With this configuration, the hot air blown into the bathroom by the circulation blower and heat exchanger dries the laundry, and the room temperature sensor detects the temperature inside the bath, and the temperature inside the bathroom is determined. When the temperature rises to the set value, the ventilation fan starts operating, and the air with increased absolute humidity inside the bathroom is discharged outdoors, and when the temperature in the bathroom decreases to the set value, the ventilation fan stops operating. However, this repeated operation maintains the laundry drying operation.

EXAMPLE An example of the present invention will be described below with reference to FIGS. 1 and 2. Frame 1 of the bathroom ventilation dryer as shown
Reference numeral 5 is provided at an opening 17 in the ceiling surface 16 of the bathroom, and on the lower surface side of the frame 16, an inlet 18 for sucking air in the bathroom and an outlet 19 are provided. The suction port 18 side is equipped with an air filter 20, a circulation blower 21 that circulates air in the bathroom, and a room temperature detection sensor 22 that detects the temperature of the suction air, and the blowout port 19 side is equipped with a hot water etc. A heat exchanger 23 through which refrigerant passes is provided. In addition, some air is discharged from the ventilation blower 2 to the outlet 2Ia side of the circulation blower 21.
A partition plate 26 forming an exhaust communication port 25 is provided so as to communicate with the ventilation port 25, and a control unit 27 is provided between the partition plate 26 and the ventilation blower 24. From the control unit 27, a lead wire 28 connected to the room temperature detection sensor 22 and a lead wire 2 connected to the motor 24a of the ventilation machine 24 are connected.
9 and a lead wire (not shown) connected to the circulation blower 21, respectively. FIG. 2 is a circuit diagram inside the control section 27.

In the above configuration, when the bathroom ventilation dryer is operated to dry laundry (not shown) suspended in the bathroom,
The air in the bathroom that flows in through the suction port 18 by the circulation blower 21 passes through the heat exchanger 23 for heat exchange, and the high temperature air is blown into the bathroom from the blowout port 19 to dry the laundry. On the other hand, a part of the air blown out from the outlet 21a of the circulation blower 21 is exhausted to the outside by the ventilation blower 24 through a duct (not shown).

Here, the ventilation blower 24 is operated intermittently. In other words, the laundry is dried by the high-temperature air blown from the air outlet 19, but the moisture removed from the laundry increases the absolute humidity in the bathroom, so ventilation is operated intermittently to remove some of this humid air. The air is exhausted by a blower 24. To explain this using the control circuit shown in FIG. 2, when the operation switch 34 connected to one end of the power supply 33 is turned on, the circulation blower 21 is operated, and the room temperature detection sensor 22 and the preset temperature controller are activated. 36 and the electronic control circuit section 27 of the control section 27
A is calculated to open and close the contact 37, and if the temperature controller 3
6 and the room temperature detection sensor 22, when the temperature in the bathroom is below a set value and the contact point 37 is open, the ventilation blower 24 is stopped, and when it is above the set value and closed, it is operated.

To explain this while comparing the embodiment of the present invention (solid line) and the conventional example (dotted line) using the graphs shown in FIGS. Until the temperature in the bathroom reaches the set value shown in FIG. 3, only high-temperature air is sent into the bathroom while the ventilation blower 24 is kept stopped by the room temperature detection sensor 22 to raise the temperature in the bathroom. This increase in the temperature in the bathroom causes the relative humidity in the bathroom to decrease as shown in FIG. 4, which speeds up the drying of clothes. However, when the temperature in the bathroom reaches a set value while the relative humidity is gradually increased by the moisture removed from the laundry, the ventilation blower 24 is operated to exhaust a part of the air with increased relative humidity in the bathroom.

Due to this exhaust air, the temperature in the bathroom decreases and when it reaches the set value, the ventilation fan 24 is stopped, and the drying operation is resumed with only the circulation fan 21 operating.
While repeating this, the intermittent operation of the ventilation blower 24 is continued.

To repeat here, when the ventilation blower 24 is constantly operated during drying operation as in the past, the heating capacity obtained by the circulation blower 21 and the heat exchanger 23 and the ventilation performance of the ventilation blower 24 The drying performance, which is largely determined by the combination of the above, cannot be adapted to all types of installation conditions, bathroom thermal loads, outside air conditions, etc. The control unit 2 connected to the room temperature detection sensor 22 provided in order to shorten the drying time provides good matching performance against changes in the various external factors, and as shown in FIG. As shown by the solid line, the drying rate is significantly accelerated compared to the conventional drying rate shown by the dotted line.

Effects of the Invention As is clear from the above description of the embodiments, according to the present invention, a room temperature detection sensor is provided near the suction port of a ceiling-embedded bathroom ventilation dryer, and when a predetermined set temperature is reached, the ventilation blower is turned off. Compared to conventional bathroom ventilation dryers that operate the ventilation blower continuously, the drying time can be significantly shortened and running costs can be reduced. You can get effects such as:

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a ceiling-embedded bathroom ventilation dryer according to an embodiment of the present invention, and FIG. 2 is a control circuit diagram of the same bathroom dryer.
3 to 5 are correlation diagrams showing the bathroom temperature, relative humidity, and dryness of laundry with respect to the drying operation time of the ceiling-embedded bathroom ventilation dryer according to an embodiment of the present invention, and FIG. 6 7 is a sectional view of a conventional bathroom ventilation dryer, and FIG. 7 is a perspective view showing the installation state of the conventional bathroom dryer. 22... Room temperature detection sensor, 27...
Control unit, 21...- Circulating blower, 23...
... Heat exchanger, 24... Ventilation blower. Name of agent: Patent attorney Toshio Nakao and 1 other person 2nd
Figure 3 - Hard tone 1 --- Jusho bu series series of tangents (ki n) → Figure 4 bullet] Yingin closing + mjn) → Section 5 Zu sub turn l118 leap (desk n) →

Claims (1)

[Claims] A circulation blower, a ventilation blower, and a heat exchanger are provided inside the frame, an inlet is formed on the lower surface of the frame, an outlet is formed on the same surface as the inlet, and a room temperature detection sensor is provided near the inlet. A ceiling-embedded bathroom ventilation dryer, comprising: a room temperature detection sensor; and a control unit that operates the ventilation blower intermittently based on the room temperature detection sensor.