JP3124594U - Simple wind speed display for air conditioning equipment - Google Patents

Abstract

An object of the present invention is to provide a display device that can easily and clearly grasp a change in wind speed in an air conditioning duct due to clogging of a dust collection filter or the like from the outside of an air conditioning facility and has a low-cost configuration.
A fan incorporating a motor that generates electricity by wind power is installed inside the air conditioning equipment as a detection unit, and an LED group or a liquid crystal display whose display changes depending on the strength of the electromotive force of the detection unit is used as a display unit outside the air conditioning equipment. By installing it, it is possible to always clearly grasp the change in the wind speed in the air conditioning duct due to the clogging of the dust collecting filter, etc. without requiring a power source.
[Selection] Figure 1

Description

The present invention relates to a wind speed display device for confirming a change in wind speed in an air conditioning duct from outside the air conditioning equipment.

Currently, it is common to use a micro differential pressure gauge that measures the pressure difference between the upstream side and the downstream side of the dust collection filter as a method for checking the clogging of the dust collection filter installed inside the air conditioning equipment from the outside of the air conditioning equipment. .

In the method of checking the degree of clogging of the dust collection filter with a micro differential pressure gauge, the increase in the pressure difference between the upstream side and the downstream side of the dust collection filter, which is said to indicate the degree of clogging, is greatly influenced by the blowing capacity of the blower. The degree of clogging and the pressure difference rarely change proportionally, and it is often difficult to clearly grasp the degree of clogging of the dust collection filter from the outside of the air conditioning equipment. Is often seen.

Anemometers sold as measuring instruments are relatively expensive, and installing an anemometer for each air conditioning duct equipped with a dust collection filter is a problem in terms of increased equipment costs, and many of them are power supplies. Therefore, it is often expensive in terms of installation location and inspection and maintenance.

Consists of a detection unit formed by a fan that has the function of generating electricity by wind power, and a display unit mainly formed by a plurality of LEDs or a liquid crystal display. By installing outside the equipment, no power supply is required, and the LED group on the display unit or the display on the liquid crystal display that changes as the electromotive force increases or decreases in the detection unit is checked, and the air conditioning duct due to clogging of the dust collection filter, etc. It is now possible to easily and clearly grasp changes in wind speed from outside the air conditioning equipment.

In the method of checking the clogging of the dust collection filter using the pressure difference by the micro differential pressure gauge, it may be difficult to grasp the clogging status of the dust collection filter depending on the limit of the blowing capacity of the blower. The dust collection filter was replaced or cleaned after it was detected that the air conditioning equipment itself had lost its original effect due to lack of airflow, etc. The device of the invention can clearly grasp the change in the wind speed in the air conditioning equipment duct, and it is possible to always know the timing of replacement or cleaning of the dust collection filter from the outside of the air conditioning equipment. The efficiency of maintenance work is improved.

Since the device of the present invention is simple in structure, it can be manufactured at a relatively low cost compared to conventional anemometers, and it has sufficient functions as a filter clogging condition and a simple wind speed confirmation application in an air conditioning duct. It leads to reduction of equipment costs.

Since no power supply is required, the cost of laying the power supply and electric wires and the electricity bill can be saved. Since it is possible to easily determine an abnormality or a failure of the device of the present invention, it is possible to improve the operating rate and safety of the air conditioning equipment from the viewpoint of fail-safe.

An axial fan with a built-in motor capable of generating electricity is installed in the air conditioning duct as a detection unit, and a pair of electric wires connected to the motor are taken out of the air conditioning duct.

An electronic circuit that has about 5 LEDs and is configured to increase the number of LEDs that are lit by an increase in supplied power is provided with a dial that can adjust the number of LEDs that are lit at a certain voltage. The package is installed outside the air conditioning equipment as a display unit, and a pair of electric wires extending from the detection unit are connected to the electronic circuit of the display unit so as to serve as a power supply source.

The air conditioner is operated with a new or just-cleaned dust collection filter attached to the air conditioner, and the wind speed in the air conditioning duct at that time is set to the maximum wind speed, and only one LED on the display is turned off. Adjust the dial on the display.

If the dust collection filter becomes clogged and the wind speed in the air conditioning duct decreases, the electromotive force in the detection section will weaken, and the number of LED lights on the display section will also decrease, so that you can grasp the clogging status of the dust collection filter. It is possible to know when to replace or clean the dust collection filter.

The perspective view which showed one Example of the detection part concerning 1 and a display part.

Explanation of symbols

a: display unit case, b: LED, c: lighting LED number adjustment dial, d: detection unit comprising a fan with built-in motor, e: duct mounting flange, f: duct mounting screw hole, g: a pair of electric wires

Claims (1)

  Consists of a detection unit formed by a fan that has a function of generating electricity by wind power and a display unit mainly formed by a plurality of LEDs or liquid crystal displays. The detection unit is installed in an air conditioning duct, and the display unit is an air conditioning facility. By installing it outside, no power supply is required, and the change in wind speed in the air conditioning duct from the outside of the air conditioning equipment by changing the display of the LED group or the liquid crystal display by increasing or decreasing the electromotive force in the detection unit A simple wind speed display device with features that can be easily and clearly grasped at all times.

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