JPS6238187Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a ventilation fan with a built-in heat exchanger, in which the temperature at each location is displayed on the ventilation fan section to show the effect to the user.

Conventionally, this type of ventilation fan did not have a temperature display device, and only the efficiency rate was displayed in the manufacturer's catalog, etc., so the user could visually confirm it. I couldn't do anything. Therefore, the certified weave quality of the product was low, and the product could not be used satisfactorily as an energy-saving device. The present invention was developed in view of the above-mentioned circumstances, and a total heat exchanger is installed in a box body containing an exhaust blower and a supply air blower in such a position that heat exchange occurs within the flow of each other's air. In a device that performs forced ventilation while recovering heat, temperature elements are placed in three locations that can measure the outside air temperature, indoor temperature, and temperature after heat exchange, and each temperature is measured on the panel surface of the ventilation fan on the indoor side. The information is displayed on a display device provided as a unit. In addition, the efficiency is displayed on an efficiency display section provided near the indoor panel temperature display section via an efficiency calculation unit so that it can be seen what percentage of heat is recovered based on the displayed temperature.

As described above, the temperature can be displayed at three locations on the indoor panel part, and the user can also understand the exchange efficiency, so the user can fully understand the product effects.

An embodiment of the present invention will be described below with reference to the drawings. Figs. 1 and 2 show a heat exchange type ventilation fan of the present invention. Inside the box body 2, a supply air blower 5 and an exhaust air blower 6 are separated from each other by a partition plate 7. A total heat exchanger 4 is located on the indoor side in front of it, and a panel 3 is provided on the indoor side. As for the flow of air, on the air supply side, air is sucked by a blower 5 from an outdoor gear gallery 2a, passes through a total heat exchanger 4, and is supplied into the room from a grill opening 3a. On the other hand, the exhaust side is sucked in through the grill opening 3a, passes through the total heat exchanger 4, and is sent to the exhaust air blower 6.
The air is exhausted from the outdoor gear gallery b. Next, regarding the temperature display method, the temperature element 11 is placed at position a to measure the outside temperature, the temperature element 12 is placed at position b to measure the indoor temperature, and the temperature element 13 is placed at position c to measure the temperature after heat exchange. The measured temperatures at each of the sections a, b, and c are displayed on a temperature display device 8 on the surface of the indoor panel 3. Also, efficiency calculation unit 1
0 is built-in, and the result is displayed by the efficiency display section 9. Figure 3 shows temperature elements 11,1
2, 13, temperature display device 8, arithmetic unit 10,
The relationship of the efficiency display section 9 is shown.

Note that the efficiency calculation of the efficiency calculation unit 10 is performed using the following formula.

Indoor temperature - Temperature after heat exchange / Indoor temperature - Outside temperature As described above, according to this invention, the heat exchange type ventilation fan displays the room temperature, outside temperature, and temperature after heat exchange, and also allows you to understand the heat exchange efficiency. Therefore, the user can recognize the effect of using the ventilation fan.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a front view, FIG. 2 is a sectional view, and FIG. 3 is an explanatory diagram of the configuration of the main part showing an example of display. In the figure, 2 is a box, 4 is a heat exchanger, 5 is a supply air blower, 6 is an exhaust blower, 11, 12, 13 are temperature elements, 8 is a temperature display device, 10 is a calculation unit, and 9 is an efficiency This is the display section. In the figures, the same reference numerals indicate the same or equivalent parts.

Claims (1)

[Scope of utility model registration request] A temperature display device that measures the room temperature, outside temperature, and temperature after heat exchange and displays the temperature in a ventilation fan that incorporates a total heat exchanger in a box that separates the supply air blower from the exhaust air blower. A heat exchange ventilation fan comprising: an efficiency calculation unit that calculates heat exchange efficiency; and an efficiency display section that displays the efficiency.