JPS6222440U - - Google Patents

Description

[Brief explanation of drawings]

Figures 1 to 5 are diagrams showing an embodiment of the rainwater cover of a ventilation system according to this invention, in which Figure 1 is a configuration diagram, Figure 2 is a plan sectional view of the rainwater cover shown in Figure 1, and Figure 3. is a side sectional view of FIG. 2, FIG. 4 is a melting time characteristic curve diagram, FIG. 5 is a freezing time characteristic curve diagram, and FIGS. 6 to 8 are diagrams showing other embodiments of this invention. Fig. 6 is a configuration diagram, Fig. 7 is a plan sectional view of the rainwater cover shown in Fig. 6, Fig. 8 is a side sectional view of Fig. 7, and Figs. 9 to 12 show a conventional heat exchange type ventilation system. 9 is a vertical sectional view, FIG. 10 is an enlarged perspective view of the end face of the heat exchanger, FIG. 11 is a configuration diagram, and FIG. 12 is a diagram illustrating freezing. In the figure, 1 is the main body of the ventilation system, 2a is the low temperature air inlet, 2d is the high temperature air outlet, 3 is the heat exchanger, 6 is the supply air blower, 7 is the exhaust blower, 9 is the rainwater cover, and 9A is the low temperature Flow path, 9B is a high temperature flow path, 9a is a low temperature flow path inlet, 9b is a left outlet, 9c is a high temperature air inlet, 9d is a left outlet, 12 and 13 are dampers, 14
is a heating element. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Amendment May 12, 1981 The scope of claims for utility model registration is amended as follows.

[Scope of Claim for Utility Model Registration] (1) A ventilation system that supplies low-temperature air sucked in from a low-temperature air intake port through a heat exchanger, and discharges high-temperature air sucked in from the room from a high-temperature air outlet through the heat exchanger; A low-temperature flow path provided in a box placed outdoors and supplying low-temperature air sucked in from the inlet from the outlet to the low-temperature air intake port of the ventilation device, and a high-temperature air outlet of the ventilation device provided in the box. A high-temperature flow path that introduces high-temperature air discharged from the inlet from the inlet and discharges it outdoors from the outlet, and a high-temperature flow path that is provided in the low-temperature flow path and the high-temperature flow path, each of which is normally open, and each flow path is opened when necessary. A rainwater cover for a ventilation system, comprising a damper for reducing the area, and a heater provided in the low temperature flow path and energized when the damper is operated. (2) Scope of Utility Model Registration Claim 1: The temperature of low-temperature air is detected, and when a temperature at which the heat exchanger freezes is detected, the damper is operated and the heater is energized at predetermined time intervals. Rainwater cover for ventilation system as described.

Claims (1)

[Scope of utility model registration request] A ventilation device that supplies low-temperature air sucked in from a low-temperature air suction port through a heat exchanger, and discharges high-temperature air sucked from a room through the heat exchanger and from a high-temperature air outlet; A low-temperature flow path that supplies low-temperature air sucked in from the inlet to the low-temperature air suction port of the ventilation device from its outlet, and high-temperature air that is provided inside the box body and discharged from the high-temperature air outlet of the ventilation device is introduced from the inlet. and a damper provided in the low temperature flow path and the high temperature flow path to open each flow path at normal times and reduce the area of each flow path when necessary, and the low temperature flow path. A rainwater cover for a ventilation system, comprising a heating element that is installed in the damper and is energized when the damper is operated.