RU43628U1 - CONTINUOUS ELECTRIC BOILER - Google Patents

Abstract

The utility model relates to heat engineering, in particular, to continuous electric water heating devices and can be used to supply boilers and public catering facilities with boiling water.

The objective of the claimed utility model is to increase the usability of the boiler, its reliability while reducing metal and energy consumption, as well as expanding the operational capabilities of the device.

The inventive continuous electric boiler comprises a upper 1 and a lower 2 cavities separated by a partition, provided with a common cover 3. In the lower cavity 2 are a ground bolt 4, a drain hose, 5 mounted on a pipe 6 of the drain pipe 7, a pipe 8 of the supply pipe 9 and terminal shanks 10 tubular electric heaters 11. The upper cavity 1 consists of three parts: a feed compartment 12, into which drain and feed pipes 7 and 9 enter through the partition 13 between the cavities; compartment 14 for the preparation of boiling water, in which there are heating parts of the heating elements; compartment 15 for collecting boiling water, on which a safety cover is installed 16. On the feeding pipe 9 in the feeding vessel 12 is mounted a float device 17, consisting of a feed valve and a float device that controls the level of water coming from the water supply. On the wall of compartment 15, a level 18 sensor is installed, lowered into the supply compartment 12 by terminals 19 and 20, and by contacts 21 and 22 into the compartment 15 for collecting boiling water. The wires from the contacts 19-22 of the sensor 18 pass through the drain pipe 7 into the lower compartment. Nutrient compartments 12 and boiling water preparation 14 communicate through an opening 23 in the wall separating the compartments. Compartment 15 for collecting boiling water has a pipe 24 connected to an external valve 25. Tubular heating elements 11 are multi-turn and installed with the possibility of including different amounts in the work (they have separate leads for connecting them to the automation unit 28). Housing 26 of the boiler

mounted on a stand 27. Block 28 automation control the operation of the heating elements is installed outside the housing 26.

Placing the boiler body on the stand, and the automation unit outside the case ensures safe and convenient operation of the boiler, and providing the ability to switch the number of multi-turn heating elements used in the operation expands its operational capabilities. The presence of a partition dividing the inner tank horizontally into two cavities isolated from each other - a boiling water cavity and a cavity that insulates the end parts of the drain hose and the feed pipe nozzle, terminal shanks of electric heaters, wire terminations from level sensors also increases the convenience of operation during repair and reliability devices. The use of a safety cover instead of an overflow tube and a reflector and communication between the compartments by means of an opening in the wall instead of the tube connecting them reduces the metal consumption of the device.

Description

The utility model relates to heat engineering, in particular, to continuous electric water heating devices and can be used to supply boilers and public catering facilities with boiling water.

Known boiler / described in and.with. USSR No. 992939 "Boiler" according to class F 24 H 1/12, A 47 J 27/21, c. 06/30/81, on. 01/30/83.

The known boiler includes a water heater with heat elements and a boiling water tank placed above it, connected by an overflow pipe, the water heater being connected by a pipe to a feed box separated from the boiling water tank by a conical wall, and provided with a sealed annular cavity partially filled with an intermediate heat carrier in which are installed heat electric heaters.

The disadvantages of the known boiler are the significant heating time to the boiling point and the inefficient use of the boiler body volume due to the volume of the intermediate coolant. A well-known boiler of continuous operation on electric heating is described in the Instructions and passport for operation, maintenance and installation, South - Ural Interindustry TsNGI, 1980, p. 4-6. Known boiler contains a housing, an inner tank and an automation unit. The internal tank serves for the preparation and collection of boiling water and consists of three parts: a feed box welded with a boiling water collector, a tank for preparing boiling water with a cross over tube that allows boiling water to flow into the boiling water collector, and tubular electric heating elements. In the collection of boiling water, a sensor for disconnecting tubular electric heating elements is located.

The disadvantages of the known boiler are the increased vertical dimension due to the fact that the tank for boiling water is located under the boiling water tank, which increases the intensity of the boiler and increases the heat loss for heating it and increases the time of heating cold water to the boiling point.

The closest in technical essence to the claimed relates to a continuous electric boiler, described in St. No. 26636 by class F 24 H 1/12, A 47 J 27/21, c. 07.22.02, op. 12/10/02. and selected as a prototype.

A well-known boiler contains a housing closed with a lid on top and an internal reservoir for preparing and collecting boiling water, consisting of a feeding box connected to a boiling water tank located inside the boiling water tank of the tank connected to it for preparing boiling water with an overflow pipe, while a feeding box contains a valve and a float for regulating the water level, a drain pipe, and a cold water level sensor. Tubular electric heaters are installed in the tank for boiling water, connected by a tube to the feeding box, and in the boiling water tank there is a sensor for turning off the tubular electric heaters when filling the boiling water tank and a sensor for turning them on when the level of boiling water in the tank is lower than permissible. a reflector is installed above the overflow pipe to protect the sensors from boiling water spray. For connection of the tap of selection of hot water there is a branch pipe.

The disadvantages of the known boiler are inconvenient and dangerous. operation due to the lack of a support for the boiler and the location of the automation unit in the boiler, which reduces both reliability and increased metal consumption due to the presence of a connecting pipe between the compartments and an overflow pipe with a reflector. At the same time, the operational capabilities of the boiler are limited, because the number of operating heating elements is constant and they are more energy intensive.

The objective of the claimed utility model is to increase the usability of the boiler, its reliability while reducing metal and energy consumption, as well as expanding the operational capabilities of the device while maintaining its technical parameters.

The problem is solved in that in a continuous electric boiler containing a casing closed with a lid on top, an automation unit and an internal reservoir divided vertically into three feed compartments, a boiling water cooking compartment, in the bottom of which tubular electric heaters (heating elements) are placed, and placed inside the boiling water collection compartment, in the upper part of which the sensor contacts are installed to determine the upper and lower liquid levels, and in the lower part there is a drain pipe for boiling water, in the feeding compartment once the feeding pipe connected to the water supply, the float device, the sensor contacts for determining the cold water level and the drain pipe are connected, while the feeding compartment and the boiling water cooking compartment are interconnected, ACCORDING TO THE USEFUL MODEL, the boiler body is mounted on a stand, the inner tank is divided horizontally by a partition two cavities - the upper and lower, and the nutrient compartment, the compartments for cooking and collecting boiling water are located in the upper cavity, and a drain hose is placed in the lower cavity, connected to the drain pipe nozzle, feed pipe nozzle, terminal shanks of electric heaters, while the boiling water cooking compartment is provided with a safety cover on top, the wires from the level sensor pass through the drain pipe to the lower cavity, the feeding compartment and the boiling water cooking compartment are communicated with each other through an opening in the wall, separating compartments, an automation unit for automatically controlling the operation of the heating elements is installed outside the boiler, the heating elements are multi-turn and installed with the possibility of switching on their number in work.

Placing the boiler body on the stand, and the automation unit outside the case ensures safe and convenient operation of the boiler, and providing the ability to switch the number of multi-turn heating elements used in the operation expands its operational capabilities. The presence of a partition dividing the inner tank horizontally into two cavities isolated from each other - a boiling water cavity and a cavity that insulates the end parts of the drain hose and the feed pipe pipe, terminal shanks of electric heaters, and cable terminations from level sensors also increases the convenience of operation when

repair and reliability of the device. The use of a safety cover instead of an overflow tube and a reflector and communication between the compartments by means of an opening in the wall instead of the tube connecting them reduces the metal consumption of the device.

The inventive continuous electric boiler has a novelty in comparison with the prototype, differing from it by the presence of such essential features as placing the boiler body on a stand, dividing the inner tank by a horizontal partition into two cavities - the upper one with compartments for boiling water and the lower one with outlets for hoses and pipes, electrical elements: terminal shanks of electric heaters and wires from sensors, the use of a safety cover in the boiling water compartment, connected with the feeding compartment by the hole between them, located outside the boiler body of the automation unit for automatic control of the operation of the heating elements made by multi-turn and installed with the possibility of including a different number of them in the work, ensuring in aggregate the achievement of a given result.

The inventive continuous electric boiler can be widely used in catering, in passenger cars and therefore meets the criterion of "industrial applicability".

The utility model is illustrated in the drawing, which schematically shows the design of a continuous electric boiler.

The inventive continuous electric boiler contains a partition 1 upper and lower 2 cavities, equipped with a common cover 3. In the lower cavity 2 there is a ground bolt 4, a drain hose 5 mounted on the pipe 6 of the drain pipe 7, the pipe 8 of the supply pipe 9 and terminal shanks 10 tubular electric heaters 11. The upper cavity 1 consists of three parts:

the feeding compartment 12, into which through the partition 13 between the cavities includes a drain and a feeding pipe 7 and 9; compartment 14 for the preparation of boiling water, in which there are heating parts of the heating elements; compartment 15 for collecting boiling water, on which a safety cover is installed 16. A float device is mounted on the feed pipe 9 in the feed vessel 12

17, consisting of a feed valve and a float device that controls the level of water coming from the water supply. On the wall of compartment 15, a level 18 sensor is installed, lowered into the supply compartment 12 by terminals 19 and 20, and by contacts 21 and 22 into the compartment 15 for collecting boiling water. The wires from the contacts 19-22 of the sensor 18 pass through the drain pipe 7 into the lower compartment. Nutrient compartments 12 and boiling water preparation 14 communicate through an opening 23 in the wall separating the compartments. Compartment 15 for collecting boiling water has a pipe 24 connected to an external valve 25. Tubular heating elements 11 are multi-turn and installed with the possibility of including different amounts in the work (they have separate leads for connecting them to the automation unit 28). The housing 26 of the boiler is mounted on the stand 27. The unit 28 of the automatic control operation of the heating elements is installed outside the housing 26.

Electric continuous boiler operates as follows.

The boiler is installed on the stand 27, a hose from the water supply is connected to the feeding pipe 9, water is drained into the sewer from the drain pipe 7. The automation unit 28 is fixed with screws to the wall. They feed water into the boiler.

Water from the water supply pipe through the feed pipe 9 and the float device 17 enters the feed compartment 12. Through the hole 23 between the feed compartment 12 and the boiling water preparation compartment 14, water enters the latter. Both compartments 12 and 14 are filled with water to a level no higher than 10-12 mm from the edge of the drain pipe 7, which is regulated by the float device 17. The contacts 19-20 of the level 18 sensor are immersed in water. The closure of the contacts 19, 20 of the sensor 18 "Level" on the water gives permission to the circuit block 28 automation to turn on the heating elements 11.

After turning on the heating elements 11, heating of water begins in the compartment 14 for the preparation of boiling water. When boiling begins, water from the boiling water compartment 14 begins to pour out under the safety cover 16 into the boiling water compartment 15 and fills it. When the drain valve 25 is closed, its level as a result of boiling and expansion of water

gradually increases and as a result closes the water contact 22 of the lower level, then contact 21 of the upper level of the sensor 18.

A command is given to the automation unit 28 to turn off the heating elements 11. The heating elements 11 are turned off.

In the case of boiling water withdrawal, its level drops below the lower level contact 22, heating elements 11 are turned on, cold water entering the compartment 14 for boiling water boiling and pouring out into the compartment 15 for collecting boiling water and from there through the drain valve 25 to the consumer. The number of heating elements used in the work can be equal to 2 or 3, depending on the need. When two heating elements are used, boiling water of 50 l per hour (power 6 kW) is provided, while 3 heating elements are supplied, 100 l of boiling water per hour (power 9 kW) is obtained. The modes are switched by a button on the front panel of the automation unit 28 (not shown and not indicated in the drawing).

If for some reason the selection of boiling water is greater than the flow of water from the water supply, then the liquid level in the supply compartment 12 will drop, the contacts 19, 20 of the sensor 18 “Level” will be exposed, the heating elements 11 will turn off, the emergency LED “Level” will light up on the panel of the automation unit I 28 "(not shown and not indicated in the drawing).

Compared with the prototype, the inventive continuous electric boiler is more convenient to use, more reliable, less metal-intensive and less energy-intensive, more economical to operate, and also safe for the consumer.

Claims (1)

A continuous electric boiler containing a casing closed with a lid on top, an automation unit and an internal reservoir divided vertically into three compartments - a nutrient, boiling water cooking compartment, in the bottom of which tubular electric heaters (TENs) are placed, located inside the boiling water collection compartment, in the upper part of which the sensor contacts are installed to determine the upper and lower liquid levels, and in the lower part there is a drain pipe for boiling water, in the feed compartment there is a feed connected to the water supply a linen tube, a float device, sensor contacts for determining the level of cold water and a drain pipe, while the feeding compartment and the boiling water cooking compartment are interconnected, characterized in that the boiler body is mounted on a stand, the inner tank is divided horizontally into two cavities - the upper and lower, moreover, the nutrient compartment, the compartments for the preparation and collection of boiling water are located in the upper cavity, and in the lower cavity there is a drain hose mounted on the drain pipe pipe, the pipe pipe the heating pipe, terminal shanks of electric heaters, the boiling water cooking compartment is equipped with a safety cover on top, the wires from the level sensor pass through the drain pipe into the lower cavity, the feeding compartment and the boiling water cooking compartment are communicated to each other through an opening in the wall separating the compartments, an automation unit for automatically controlling the operation Heating elements installed outside the boiler, heating elements made multi-turn and installed with the possibility of including a different number of them in the work.