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A technology of air volume and air-conditioning air, which is applied in space heating and ventilation, heating and ventilation control systems, heating and ventilation safety systems, etc. It can solve problems such as unavailable air volume units and air-conditioning status obstacles, and achieve stable air volume control and stable detection Effect

Active Publication Date: 2009-08-19
HITACHI AIR CONDITIONER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, the air volume unit cannot be well controlled, which hinders the state of the air conditioner

Method used

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Embodiment Construction

[0028] Embodiments of the present invention will be described below based on the drawings. figure 1 It is a front view showing the air volume unit of the first embodiment of the present invention, figure 2 yes figure 1 represents the side view of the air volume unit, image 3 It means that it is connected to the air-conditioning duct figure 1 A schematic cross-sectional view showing the state in which the swirling flow flowing inside the air volume unit is corrected, Figure 4 (a) is a schematic front view showing a state in which right-handed backflow flowing inside the air volume unit is corrected, Figure 4 (b) is a schematic front view showing a state where left-handed backflow flowing inside the air volume unit is corrected.

[0029] Such as Figure 1 ~ Figure 4As shown, the air volume unit 10 of this embodiment is equipped with: a propeller-type wind speed sensor 12, which detects the wind speed of the air flow flowing in the cylindrical casing 11 connected to th...

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Abstract

The present invention relates to air volume units. To provide an air volume unit capable of stably controlling the air volume even when air flow turbulence such as deflected flow or swirl flow occurs in an air-conditioning duct. The air volume unit (10) has: a propeller-type wind speed sensor (12) that detects the wind speed of the air flow flowing in the cylindrical casing (11) connected to the air-conditioning duct; (11) an opening and closing blade (14) for inner opening and closing; and an opening and closing device (15) for driving the opening and closing blade (14). On the upstream side of the wind speed sensor (12) in the bushing (11), a thin-plate-shaped airflow correction body (16) is provided as an airflow correction mechanism mainly for correcting swirl flow. The airflow correction body (16) temporarily corrects the swirling flow generated in the air-conditioning duct in the axial direction of the sleeve (11), and supplies the flow to the wind speed sensor (12) on the downstream side.

Description

technical field [0001] The present invention relates to an air volume unit which detects the wind speed in an air-conditioning duct by a sensor and converts the detected value into a control signal for operation control, and particularly relates to a unit which can accurately control the operation even when the airflow in the air-conditioning duct is turbulent Air volume unit. Background technique [0002] In the conventional air volume unit, a propeller type or a thermistor type is mainly used as the wind speed sensor for detecting the wind speed in the air-conditioning duct. The thermistor-type wind speed sensor can detect wind speed with high precision and can accurately control the operation of the air volume unit, but it is difficult to provide shock resistance due to the fine structure of the wind speed sensor. On the other hand, since the wind speed sensor of the propeller type is simple in structure and easy to manufacture, it is often used in the air volume unit (f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24F11/04
Inventor 上野武司森阳司大神尚基
Owner HITACHI AIR CONDITIONER