SU918705A1 - Contact-surface water heater - Google Patents

Description

(54) CONTACT SURFACE WATER HEATER

.one

The invention relates to a power system, in particular to devices for heating water, such as contact water heaters.

A contact surface water heater is known, comprising a housing with a contact chamber, over which a water distributor is installed, connected to a supply water supply pipeline with regulating valves, and a nadtopochny disk placed inside the housing, a radiation heating chamber and an annular water tank installed above it, the latter being communicated via overflow pipes with air lift device with overflow threshold 1.

However, the known water heater has an incomplete deaeration of heated water due to the insufficient surface of the evaporation mirror.

The purpose of the invention is to improve the quality of deaeration and reliability of the water heater.

This goal is achieved by the fact that the overflow threshold of the airlift device is located above the water level in the water tank.

In addition, the water heater is equipped with a flow regulator mains supply connected to the water supply and acting on the control valve of FIG. 1 shows the proposed water heater, a general view; in fig. 2 shows section A-A in FIG. one.

In the upper part of the housing 1 there is a contact chamber 2, above which is installed a water distributor 3 connected to the pipeline 4 for supplying network water with regulating fittings 5. In chamber 2 a layer 6 of nozzle is placed, for example, from Raschiga rings poured on the supporting grid 7. 15 Under the contact chamber 2 there is a combustion radiation chamber 8, nT, a combustion disk 9 and an annular water distribution tank 10, connected by overflow pipes 11 to a central tube 12 covered with a layer of refractory insulation 13.

20

Claims (2)

The combustion chamber 8 is surrounded by a water jacket 14. The central pipe 12 communicates with an air-lift device 15 having an overflow threshold 16 and drain windows 17. The air-lift device is equipped with metal grids 18, the space between which is filled with a hollow ball nozzle 19. The upper grid 18 prevents the balls from escaping from the channel of the airlift device. An air-lift device is connected to a tank 20 for draining heated water by nozzles 21 and 22 and a lowering compartment 23. A nozzle 24 is designed to drain steam into the gas path of the water heater. In order to control the amount of water supplied to the apparatus, the control valve 5 is connected to the float device 25. The heater operates as follows. Water to be heated is supplied via conduit 4 to the water distributor 3 and further to contact chamber 2 to the nozzle layer, where it heats up to 70-80 ° C and flows to disk 9, and from there water is supplied to tank 10. From the latter, water is supplied through pipes 11 and 12 flows into the lower zone of the water jack. 14. Part of the water, the passage along the combustion chamber 8, boils, forming a steam-water emulsion, which rises upward through the airlift channels 15. Under the pressure of the dynamic pressure of the vapor-liquid emulsion, the ball nozzle 19 is shaken together in a reciprocating two-way movement, additionally turbulizing the flow. Reaching the top of the airlift, the emulsion through overflow threshold 16 is discharged into the discharge compartment 23. Here the water flow splits: part of it falls to the bottom of compartment 23 and then flows through the nozzle 22 into the lower part of the tank 20, and part of the water immediately flows into the tank 20 through the nozzle 21. The separated steam through the nozzle 24 is discharged into the gas path of the water heater. Regulation of the amount of water supplied to the apparatus is made by regulating valves 5, controlled by a float device 25. At a given water level in the channel, the valve of regulating valves 5 is closed and no water enters the device, water begins to flow only after the next boiling water boils through airlift, which leads to a decrease in its level in the tank 10 and lowering the float 25. The valve 5 will open and water will flow through the water distributor 3 into the contact chamber 2. Since the water threshold 16 is located higher than normal The level in the tank, 10, heated water can flow out of the water jacket 14 through the airlift device 15 only if it is provided with a developed airlift mode characterized by intense vaporization. The deaerated water, descending through compartment 23, is cooled due to the transfer of heat to the water rising through the water jacket 14, thus performing regenerative heat exchange. Due to this, the required heat removal is reduced to heat the water passing through the combustion chamber. 1. Contact-surface water heater, comprising a housing with a contact chamber, over which a water distributor is installed, connected to a supply water supply pipeline with regulating armature, and a nadtopchny disk located inside the housing, a radiation heating chamber and an annular water supply tank installed above it, the tank communicates via overflow pipes with an air-lift device with an overflow threshold, characterized in that, in order to improve the quality of deaeration, the overflow threshold is airlift device is located above the water level in the water tank. 2. The water heater according to claim 1, characterized in that, in order to increase reliability, the water heater is equipped with a network water flow regulator connected to the water supply tank and is effective on control valves. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 153550, cl. F 24 H 1/10, 1963. f Fig. / 4 csj ha a at