JPS63150548A - Ventilator - Google Patents

Abstract

PURPOSE:To recover the heat of exhaust air and to eliminate a possibility that red heat and fire accident of a heater exclusively might be caused by a fault of a blower by disposing a heat exchanger at an intersecting part of an exhaust air vent passage and a feed air vent passage and a PTC heater at an indoor side discharge port. CONSTITUTION:When a blower 2 is actuated and power is supplied to a PTC heater 8, air sucked up through an indoor side suction port by the blower 2 is discharged to the outside C of a room via a heat exchanger 7 and an outdoor side discharge port 3. By the discharge of air, the inside of a room A is put into a negative pressure, and air in the outside C of the room is sucked up through an outdoor side suction port 6, and hot air heated by the PTC heater 8 is discharged into the room A through the indoor side discharge port 3. Upon this occasion, the discharged air is heat exchanged with exhaust air, and the heat within exhaust air is recovered to the room A and a predetermined quantity of heat is supplied with respect to a predetermined air flow rate by the PTC heater.

Description

[Detailed Description of the Invention] Industrial Application Field The present invention exchanges heat between the supply air flow and the exhaust air flow, supplies hot air with a heater, and ventilates the inside of a highly sealed room in which the air is installed. , relating to heating and drying ventilation systems.

BACKGROUND OF THE INVENTION Conventionally, this type of ventilator has generally had a configuration as shown in FIG. 2, although no specific literature can be cited. In other words, 101 is a main body of a ventilation system that has a built-in blower 102, which communicates the intake side of the blower 102 with room A through an indoor intake port 104, and the discharge side of the blower 102 is divided into three sections, one of which is connected to room A and a sheathed heater 108. The other side is connected to the outdoor air C via a heat exchanger 107 through an outdoor air outlet 105. And this outdoor side discharge port 106 and the blower 10
An exhaust ventilation passage 109 connecting the discharge side of the heat exchanger 10
An air supply ventilation passage 110 that intersects at 7 is formed by connecting the outdoor side intake port 106 and the indoor side discharge port B111.

In the above configuration, when the blower 102 is moved 1 @ and the sheathed heater 108 is energized, the air sucked in from the indoor air intake port 104 by the air blower 102 is partially heated by the sheathed heater 108 and passes through the indoor air outlet AlO3 and then flows into the room. A, and the remaining part passes through the heat exchanger 107 and is exhausted outdoors. The air returned to room A is sucked into the blower 2 again, and some of the air is sent to the heater 108.
The remaining part of the air is heated to a higher temperature than the last time it passed and is then exhausted. By the way, room A
Since a part of the air is exhausted to the outside C, the pressure becomes negative, and the air from the outside C is sucked in from the outdoor air intake port 106, passes through the heat exchanger 107, and is discharged into the room A from the indoor air outlet B111. At this time, heat exchange is performed with the exhaust air, and the heat in the exhaust is recovered to room A.

Problems to be Solved by the Invention In such a conventional configuration, some of the air taken in through the indoor intake port 104 is exhausted to the outside by the blower 102, and some is recirculated indoors, resulting in poor ventilation efficiency. In addition, if the blower malfunctions and the air is no longer being blown, the sheathed heater will not be cooled and the heat of the sheathed heater may cause a fire, and safety devices such as temperature fuses or thermostats should be installed to prevent the fire from occurring. must be installed in the ventilation system itself. Furthermore, if the supply/exhaust resistance changes due to the piping method, there is a problem in that the discharge temperature of the ventilation system is not constant.

The present invention has been made in view of these problems and aims to provide a safe ventilation system that can perform ventilation without impairing the ventilation effect.

Means for Solving the Problem In order to solve this problem, the present invention provides a ventilation fan body with a built-in blower, an indoor air intake port that communicates the air intake side of the blower with the room, and a discharge side of the blower. An outdoor side discharge port communicating with the outdoors, and an outdoor side intake port and an indoor side discharge port forming an air supply ventilation path so as to intersect with an exhaust ventilation path connecting the outdoor side discharge side and the discharge port of the blower. A heat exchanger is provided at the intersection of the exhaust ventilation path and the supply air ventilation path, and a PTC heater is provided at the indoor discharge port.

Function: With this configuration, a PTC heater supplies a constant amount of heat to the air from outside for a constant air volume, and the warm air is discharged indoors, while a heat exchanger converts the heat of the air exhausted to the outside into a portion of the air. This allows ventilation to be carried out without sacrificing the ventilation effect.

Example An embodiment of the present invention will be described below with reference to FIG.

In FIG. 1, reference numeral 1 denotes a main body of the ventilation system with a built-in blower 2. The intake side of the blower 2 and the room A are communicated with each other through an indoor intake port 4, and the discharge side of the blower 2 is connected to the outside via a heat exchanger 7. C through an outdoor discharge port 6. An exhaust ventilation passage 9 connects this outdoor outlet 6 and the discharge side of the blower 2.
An air supply ventilation passage 10 which intersects with the heat exchanger 7 is formed by connecting the outdoor side intake port 6 and the indoor side discharge port 11 in which the PTC heater is disposed.

In the above configuration, the blower 2 is driven and the PTC heater 8
When energized, the air that has been sucked in by the blower 2 from the indoor air intake port 4 passes through the heat exchanger 7, passes through the outdoor air outlet 5, and is exhausted to the outdoor air C.

As the air is discharged, the pressure inside the room A becomes negative, and the air from outside the room C is sucked in from the outdoor air intake port 6, passes through the heat exchanger 7, and is heated by the PTC heater 8 from the indoor air outlet 3. Air is discharged into room A. At this time, heat exchange is performed with the exhausted air, and the heat in the exhaust gas is recovered into the room A, and a constant amount of heat is supplied by the PTC heater for a constant air volume. Note that if there is no need to heat room A, normal ventilation can be performed as long as the PTC heater is not energized.

Effects of the Invention As is clear from the description of the embodiments above, according to the present invention, all the indoor air taken in by the blower is exhausted to the outdoors through the heat exchanger, and all the air taken in from the outdoors is converted into heat. The heat of the exhaust air is recovered by passing through the exchanger, and the amount of heat supplied per unit air volume can always be kept constant by the PTC heater, and there is no need to worry about red heat or fire caused by the heater alone due to blower failure. It is possible to achieve highly safe ventilation without impairing the ventilation and heating effects.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing a ventilation system according to an embodiment of the present invention, and FIG. 2 is a block diagram showing a conventional ventilation system. 1... Ventilator main body, 2... Blower,
3...Indoor side discharge port, 4...Indoor side intake port, 6...Outdoor side discharge port, 6...Outdoor side intake port, 7. ...Heat exchanger, 8...
PTC heater, 9... Exhaust ventilation path, 1o...
...Air supply ventilation duct. Name of agent: Patent attorney Toshio Nakao and 1 other person3-
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Claims (1)

[Claims] A ventilation fan body with a built-in blower includes an indoor air intake port that communicates between the air intake side of the air blower and the room, an outdoor air outlet that communicates the air outlet side of the air blower with the outdoors, and the outdoor air outlet and the air blower. An outdoor air intake port and an indoor air outlet forming a supply air passage are provided to intersect with an exhaust air passage connecting the exhaust air passage, and a heat exchanger is provided at the intersection of the exhaust air passage and the supply air ventilation passage. and a PTC heater arranged at the indoor discharge port.