SU569818A1 - Air-heater - Google Patents

Description

one

The invention relates to heating and ventilation technology and can be used to provide forc conditions. premises, civil, public and administrative buildings.

A device for heating air is known, comprising a housing divided by a partition into chambers with a heater ij.

However, it does not control the output of the treated air.

The closest to the technical essence of the device is a device for - heating a wave, containing a distribution section with an air regulating valve, a heating section with a heat exchanger, a bypass channel and a mixing section, at the outlet of which the grid t2j is installed.

However, such a device does not regulate the direction of the air stream depending on its temperature.

When thermal air is supplied to the room, the air stream under the action of gravitational forces deflects upwards and spreads onto the ceiling. At the same time, considerable temperature stratification along the height is placed with the formation of a heat cushion in the upper zone of the room and the cooling of the serviced zone. Moreover, the heat transfer through the ceiling to the rooms on the upper floor can be significant.

When cold air is supplied, the supply jet under the action of gravitational forces deflects downwards and lowers into the serving area of the room. At the same time, at the point where the jet enters the serviced zone, an uncomfortable zone with an increased speed and temperature difference in the jet can form.

The aim of the invention is to provide control of the direction of the air stream depending on its heating.

This is achieved by the fact that in the proposed device the output grille is made rotatable and is provided with an actuator connected to the actuator of the regulating valve through, for example, a flexible coupling.

The drawing shows schematically the proposed device for heating the air;

The device for heating the air contains a distribution section 1 in which the air control valve 2 is located, a heating section 3 with a heat exchanger 4 and a bypass channel 5, and a mixing 6, at the outlet of which an outlet grid 7 is installed. The drive 8 of the output grid 7 is connected to the drive 9 control air valve 2 by means of rji.6 link 10, made in the form of a cable. The intake air from the central air preparation chamber through the duct system enters the device through the inlet pipe 11.

In that case, . Koraai air control valve 2 completely closes the bypass channel 5 (the case of maximum heat load), noBojx) THaa output grille 7 is installed below a certain horizontal frame. All the supply air supplied to the device passes through the heat exchanger 4: it heats up and the output grill 7 is supplied to the room. The inlet stream is lowered and then rises. The initial immersion of the flow contributes to the intensive mixing of the supply air from the room air and increases the efficiency of its thermal effect on the areas where people are staying. The flow is not laid, the ceiling is not laid, or it is laid at a great distance from the exit grille. Heat loss through ceilings: with decreases.

In the case when the air control valve 2 completely closes the heat exchanger 4 (the case of maximum cooling load), the rotary output re-; the chain 7 is set at a certain angle upwards from the horizontal. All cold air passes through the bypass channel and the exit air grid 7 is fed to the ceiling surface. Under the influence of gravity-. Onnogo forces flow. lowered into serviced

the ash is placed at a great distance from the exit grate.

Since each position of the air regulating valve 2, due to the presence of link 10, corresponds to a certain polishing of the rotary output grill 7, each temperature of the incoming air flow corresponds to a certain effective (in the sense of maintaining comfortable conditions in the space of its movement).

The use of a new element — a rotatable outlet grille associated with the air control valve — allows the air flow to be reversed depending on its heating. The intensity of the heat exchange between the inflow of the jet and the surrounding air, lowering the temperature difference in the height of the room, is increased, and cold air is prevented from entering the area where people are staying.

Claims (2)

1. USSR author's certificate No. 246017, cl. R 24 H 3/00, 1968. 2.Zakharov, Yu.V., Andreev, L.M. Equipment for ships, air conditioning systems. L., Shipbuilding, 1971, p. 247.