JP2005221178A - Forced simultaneous air supply and exhaust type ventilating device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a ventilation drier for a bathroom by forced simultaneous air supply and exhaust. <P>SOLUTION: The ventilation of the bathroom is performed by forced simultaneous air supply and exhaust. A fan unit for air supply 1a and a fan unit for exhaust 1b are mounted in a casing 2, and the outside air blown by an air supply fin 5 is heated by a heater 8, and supplied to the bathroom along a guide plate 7. The outside air free from heating is allowed to flow at a rear face side of the guide plate to prevent the heating of the casing. The returned air is exhausted outdoors by the fan unit for exhaust 1b. In a case of a one-tsubo (unit of area and about 9.2 m<SP>2</SP>) type bathroom, the air supply and exhaust volumes are respectively determined to be 150-200 m<SP>3</SP>/h, and the impairing of drying function can be prevented by mounting the heater at the air supply side even when a temperature of the outside air is low and the humidity is high in comparison with those in the bathroom. This ventilating device is also effective for countermeasure against the uncomfortable cold air in taking a bath. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a ventilation drying apparatus for a bathroom of a general house.

  It is presumed that drying / heating equipment has newly entered the bathroom market where ventilation fans have been the mainstream, but the ventilation method for drying / heating equipment is the third type ventilation method with a duct of φ100 (exhaust: mechanical ventilation, air supply: Natural ventilation is almost the case.

The main method of the prior art in the drying / heating machine is a method of promoting drying by heating the interior of the bathroom with a heater and converting humidity (latent heat) to temperature (sensible heat). It is necessary until 5 kg of laundry is dried. The time is over 4 hours. In a ventilating dryer for bathrooms on the market, the power consumption of the drying heater is approximately 1400 W, and the displacement during drying is 40 m ³ / h.

  According to the Tokyo Fire Department's “Installation Standards for Ceiling Built-in Clothing Dryers and Heating Equipments Installed in Bathrooms”, the temperature limit of the surface of the main unit and the contact surface with combustibles is 85 ° C (standard ambient temperature: 30 It is essential to consider a structure in which the heater temperature is difficult to transmit.

  In the case of the third type ventilation method, the humidity in the bathroom is not easily removed even if the ventilation fan is operated, and most housewives have taken the outside air by opening the bathroom window while operating the ventilation fan. . This method of drying with ventilation is rational and economical and has a great effect.

  The function effect of the 1st type ventilation method (mechanical ventilation for both exhaust and air supply) that is dry by ventilation, that is, forcibly supplying and exhausting the bathroom is high, but uncomfortable feeling of cold air (air supply) during bathing in winter There are disadvantages. On the other hand, there are a number of prior arts using a quadrature element (heat exchanger) that compensates for this drawback, but the orthogonal element itself may cause mold and the like and is not widely used in practice.

  The present invention pays attention to the reduction of power consumption during drying of laundry using the bathroom and the prevention method of heat conduction of the heater, and by comparing and examining the disadvantages and advantages of the third type ventilation method and the first type ventilation method. A new solution is found, and economical realization and comfortable ventilation are proposed.

As prior art relating to the present invention, there are (1) JP-A-9-122390 and (2) JP-A-10-267349. In (1), when a damper is installed in the air supply path and the damper is closed, the air blower functions to circulate the air heated by the heat exchanger as a circulation blower, and the exhaust blower fulfills the exhaust function in the bathroom. In addition, even when the damper is opened, the circulation blower is not a fan unit dedicated to supply air but is always circulating because the air in the bathroom is circulated, so the ratio of the supply air amount is small. (2) is a third type ventilation method, which is a natural air supply without a fan installed on the supply side, and a mechanical exhaust is performed with a fan installed only on the exhaust side. On the other hand, the present invention performs forced supply / exhaust at all times.
JP-A-9-122390 JP-A-10-267349

  The problem to be solved is to provide a structure in which countermeasures against cool air by forced air supply and the temperature of the heater are difficult to transmit to the surface of the main body of the equipment while forcedly supplying and exhausting air in the bathroom.

In order to achieve a rational and economical drying of the bathroom and laundry by the mechanism of “drying by ventilation”, the present invention uses forced ventilation for bathroom ventilation, and an exhaust fan unit at an appropriate place on the ceiling or wall of the bathroom. And an air supply fan unit, and a heating heater is provided on the air supply fan unit side. As a guideline, in the case of a 1 tsubo type bathroom, the air supply and exhaust air flow are 150 m ³ / h each When the outside air supplied is 200 m ³ / h and the temperature is lower than that in the bathroom or the humidity is high, a heater for assisting the drying function is provided on the side of the air supply fan unit so that the drying function does not deteriorate. The effect of this heater is also effective against unpleasant cold air during bathing.

  According to the second aspect of the present invention, an air short circuit between the exhaust air and the air supply is reduced by separating and mounting the exhaust fan unit and the air supply fan unit in the bathroom. This makes it possible to effectively ventilate a zone that is a blind spot. In addition, for a user who desires to add a drying function to a bathroom that already has a ventilation fan, only the air supply fan unit with a built-in heater is attached, thereby reducing the user's cost burden.

  In the invention of claim 3, since the exhaust fan unit and the air supply fan unit are housed in one housing, there is a dimensional limit, but compatibility with a conventional bathroom ventilation dryer is possible. It is what. Duct piping is provided for exhaust and supply.

  According to the fourth aspect of the present invention, when an air supply filter such as a salannet is provided on the windward side of the heating heater of the air supply fan unit or the suction part of the fan case, dust or the like is introduced into the bathroom. This is to prevent intrusion.

  The invention of claim 5 uses a heat-dissipating high-quality member, such as an aluminum plate, and heats the outside air by providing a heater near the outside air guide plate. Therefore, heat conduction is reduced by providing an unheated air flow on the back surface of the guide plate. As a result, it is possible to ensure safety that does not lead to a fire even if a sensor or fuse for preventing overheating does not operate. The guide plate may be molded into a wave shape to control the wind direction, and the heat radiation area is also increased.

  According to the present invention, a heater having a power consumption of 1400 W as a bathroom dryer can be reduced to a heater with a power consumption of about 400 W, which can greatly save energy. Compared to conventional drying / heating machines, the control and other structures are simpler, so cost reduction can be expected.

According to condominium manufacturer in-house test data for bathroom ventilation / dryers often used in apartment houses such as condominiums, etc., the hot air circulation rate based on the third type ventilation method is 160m ³ / h, and the dry power consumption is 320 × 3W. In the apparatus, it is determined that the drying is possible even in the state where the energization of two of the three heaters in use is stopped, that is, the operation with one heater (dry power consumption 320 W). Drying is an example that demonstrates aeration, or “drying by ventilation”. The best mode of the present invention is to perform forced simultaneous supply / exhaust by separately arranging an exhaust fan unit and an air supply fan unit. By using a DC motor and a variable speed control board to control the speed of the fan, a more rational ventilation and drying effect can be achieved by selecting an operation suitable for daily life such as ventilation during bathing and drying of laundry. can do.

  FIG. 1 is a layout view schematically showing that a simultaneous air supply / exhaust type integrated ventilation device 1 of the present invention is installed in a bathroom 30. FIG. 2 is a perspective view showing the external appearance of the simultaneous supply / exhaust type integrated ventilation device 1 in which the exhaust fan unit and the supply fan unit of the present invention are integrated into one housing. Reference numeral 2 denotes a housing which is fitted into the ceiling of the bathroom. A decorative panel 15 is arranged at a position where it can be seen on the ceiling in the bathroom. Reference numeral 3 denotes an air supply port, and 10 denotes an exhaust port, which are led to the outer wall of the building by the pipes of the ducts 31 and 32, respectively. During operation, the outside air heated by the built-in heater 8 through the air supply port 3 is supplied into the bathroom from an air supply outlet 3a provided in a part of the decorative panel 15, and from the exhaust inlet 10a into the bathroom. The moist air is sucked in and discharged to the outside through the exhaust port 10 to form forced simultaneous supply / exhaust.

  FIG. 3 is an explanatory view showing the structure of the simultaneous supply / exhaust type integrated ventilation device 1. An air supply fan unit 1 a and an exhaust fan unit 1 b are integrally installed inside a housing 2 that wraps the entire apparatus, and 7 is a guide plate for air supply that is driven by an air supply motor 4. It shows that the outside air drawn from the air supply port 3 is guided into the bathroom 30 by the fan 5. A heater 8 serves as a heater for heating unpleasant cold air during drying operation and bathing. Reference numeral 14 denotes an air supply filter that plays a role of preventing dust from entering from outside air. Reference numeral 6 denotes an air supply fan case, and a partition plate 9 is provided on a part of the decorative panel 15 located below the outside air intake 6a of the air supply fan 5 to prevent the outside air from diffusing.

  The structure of the exhaust fan unit 1b is that the exhaust fan 12 driven by the exhaust motor 11 and the exhaust fan case 13 suck in the moist air in the bathroom 30 from the exhaust suction port 10a, and then go outside through the exhaust port 10. Discharged. The exhaust fan unit 1b and the air supply fan unit 1a operate independently of each other by the partition plate 2a.

  FIG. 4 is a front view of the operation controller 16. When the power switch 17 is pressed, one of the time setting display lamps 18a is turned on, and the ON display lamp 19a of the heater switch 19 is turned on to start the operation. The time setting is changed by pressing the time setting switch 18. When the heater switch 19 is pressed at the time of bathing in summer, the ON display lamp is turned off and the heater is turned off. In addition, when the fan operation sound during bathing is concerned, when the low speed switch 20 is pressed, the low speed display lamp 20a is turned on and both the exhaust fan and the air supply fan are switched to the low speed operation. To stop the operation, press the power switch to turn off all the indicator lamps. When the heater is used, even if the heater is turned off, only the air supply fan finishes the delayed operation and stops after about 30 seconds.

  FIG. 5 is a layout view in the bathroom 30 when the air supply fan unit 1a and the exhaust fan unit 1b are separated at the position of the partition plate 2a and installed as the air supply device 21 and the exhaust device 25, respectively. is there. The air supply device 21 is shown in FIG. FIG. 4A is a perspective view showing an appearance, and an air supply fan unit 1a (see FIG. 3) is provided inside the housing 22. FIG. Reference numeral 24 denotes an air supply panel, which supplies warm air from the air supply outlet 3a. FIG. 6B is a structural explanatory view of the air supply device 21 and has the same structure as the air supply fan unit 1a shown in FIG.

  FIG. 7 shows the exhaust device 25. FIG. 6A is a perspective view showing an appearance, and an exhaust fan unit 1b is provided inside the casing 26. FIG. FIG. 4B is an explanatory diagram showing the structure. Reference numeral 27 denotes a return air panel, which sucks in damp air in the bathroom by the exhaust fan 12 and the exhaust fan case 13 and discharges it to the outside through the exhaust port 10. The operation method of the air supply device and the exhaust device described above is the same as that in the first embodiment.

  FIG. 8A is a perspective view of the simultaneous air supply / exhaust type integrated ventilation device 1 ′ when no air supply port is provided. FIG. 4B is an explanatory view showing the structure. The air supply port 3 is removed from the structure of the first embodiment shown in FIG. 3, and is closed by the blind plate 28 and the partition plate 9 is removed instead. Furthermore, if the decorative panel 15 is changed to a circulation decorative panel 29, it can be used as a substitute for a conventional drying / heating machine. The return air in the bathroom attracted by the air supply fan 5 is heated again by the heater 8. As the guide plate 7, a heat-dissipating high aluminum plate is used and heated by a heater 8 provided in the vicinity, which may cause abnormal heat conduction to the housing 2. Heat conduction is reduced by providing an unflowed air flow. A part of the humid air that circulates is discharged from the exhaust port 10 to the outside through the exhaust fan unit 1b.

  “Drying by ventilation” realized by forced simultaneous supply and exhaust significantly reduces power consumption compared to drying by a heater. The heater to be installed is an electric heater or a ceramic heater. Sufficient safety considerations are necessary in the event of a situation such as an overheating prevention fuse or a temperature controlled thermostat. In particular, equipment that uses a heater relies heavily on the reliability of safety devices such as fuses and thermostats. However, if the prevention of heating is possible depending on the structure of the equipment, it should be actively implemented. The method of reducing the heat conduction by providing an air flow on the back surface of the guide plate heated by the heater is extremely effective in fields where the safety of equipment installed in concealed parts such as the ceiling is required, that is, in a bathroom dryer. It is a measure.

It is a layout view of the forced simultaneous supply / exhaust type integrated ventilation device of the present invention. (Example 1) It is a perspective view of the forced simultaneous supply / exhaust type integrated ventilation device. (Example 1) It is explanatory drawing which shows the structure of the said forced simultaneous supply / exhaustion type | mold integrated ventilation apparatus. (Example 1) It is a front view of the operation controller of the said ventilation apparatus. (Example 1) It is a layout of the forced simultaneous supply / exhaust separation type ventilator of the present invention. (Example 2) (A) A figure is a perspective view which shows the external appearance of an air supply apparatus, (b) A figure is explanatory drawing which shows the structure. (Example 2) (A) A figure is a perspective view of an exhaust device, (b) A figure is explanatory drawing which shows the structure. (Example 2) (A) A figure is a perspective view in case there is no air supply opening, (b) A figure is explanatory drawing which shows the structure. Example 3

Explanation of symbols

1 Simultaneous supply / exhaust type integrated ventilation system 2 Housing
2a Partition plate 3 Air supply port 4 Air supply motor 5 Air supply fan 7 Guide plate 8 Heater 9 Partition plate
10 Exhaust port
11 Exhaust motor
12 Exhaust fan
14 Air supply filter
15 Decorative panel
16 Controller for operation
21 Air supply device
22 Enclosure
23 Partition plate
24 Air supply panel
25 Exhaust system
26 Enclosure
27 Return air panel
28 Blind board
29 Circulation panel
30 bathrooms

Claims (5)

  A forced simultaneous air supply / exhaust type ventilator for a bathroom comprising an exhaust fan unit and an air supply fan unit at an appropriate place on the ceiling or wall of the bathroom, and a heating heater provided on the air supply fan unit side.   The forced simultaneous air supply / exhaust type ventilator for bathroom according to claim 1, wherein the exhaust fan unit and the air supply fan unit are installed separately.   The forced simultaneous air supply and exhaust type ventilator for bathrooms according to claim 1, wherein the exhaust fan unit and the air supply fan unit are housed in a single casing.   The forced simultaneous exhaust / exhaust type ventilator for bathrooms according to claim 1, wherein a dust removing filter is provided on the windward side of the heating heater of the air supply fan unit.   The forced simultaneous use for bathrooms according to any one of claims 1 to 4, wherein a flow of air is provided on the back surface of the guide plate for guiding the heated air into the bathroom so that the heat of the heater is not transmitted to the outside of the housing. Supply and exhaust type ventilator.

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